nes 751 requirements for preservation, preparation and painting of grp ships (superseded by nes 863)...

Ministry of Defence Defence Standard 02-751 (NES 751)

Issue 1 Publication Date 01 April 2000

Incorporating NES 751 Category 2

Issue 3 Publication Date June 1989

Requirements For Preservation,Preparation And Painting Of GRP

Ships

DStan

DStan is now the publishing authority for all Maritime Standards (formerly NESs). Any reference to any other publishing authority throughout this standard should be ignored. Any queries regarding this or any other Defence Standard should be referred to the DStan Helpdesk as detailed at the back of this document.

AMENDMENT RECORD

Amd No Date Text Affected Signature and Date

REVISION NOTE

This standard is raised to Issue 1 to update its content.

HISTORICAL RECORD

This standard supersedes the following:

Naval Engineering Standard (NES) 751 Issue 3 dated June 1989.

Ministry of Defence

Naval Engineering Standard

NES 751 Issue 3 (Reformatted) June 1989

PRESERVATION, PREPARATION ANDPAINTING OF GRP SHIPS

This NES Supersedes

NES 751 ISSUE 1 & 2

Record of Amendments

AMDT INSERTED BY DATE

1 INCORPORATED

2

3

4

5

6

7

8

9

10

i

NAVAL ENGINEERING STANDARD 751

ISSUE 3 (REFORMATTED)

PRESERVATION, PREPARATION AND PAINTING OF

GRP SHIPS

The issue and use of this Standard

is authorized for use in MOD contracts

by MOD(PE) Sea Systems and

the Naval Support Command

ECROWN COPYRIGHT

Published by:

Director of Naval ArchitectureProcurement Executive, Ministry of DefenceSea Systems, Foxhill, Bath BA1 5AB

NES 751Issue 3 (Reformatted)

iii

SCOPE

1. The preparation and painting procedures for GRP construction ships. For the purpose of thisstandard, ships are defined as being 15 metres or above in length.

2. Individual GRP construction ships are to be prepared and painted in accordance with thebuilding specifications and/or drawings for the Class or Ship.


iv


v

FOREWORD

Sponsorship

1. This Naval Engineering Standard (NES) is sponsored by theMinistry of Defence, Chief NavalArchitect (CNA), Section NA 131, Foxhill, Bath BA1 5AB.

2. It is to be applied as required to any Ministry of Defence contract for the preparation andpainting of GRP Ships.

3. If it is found to be technically unsuitable for any particular requirement the Sponsor is to beinformed inwriting of the circumstances with a copy to ChiefNaval Architect, Section NA145.

4. Any user of this NES either within MOD or in industry may propose an amendment to it.Proposals for amendments which are:

a. not directly applicable to a particular contract are to be made to the Sponsor of theNES;

b. directly applicable to a particular contract are to be dealt with using existing proceduresor as specified in the contract.

5. No alteration is to be made to this NES except by the issue of a formal amendment.

6. Unless otherwise stated, reference in this NES to approval, approved, authorized or similarterms, means by the Ministry of Defence.

7. Any significant amendments that may be made to this NES at a later date will be indicatedby a vertical sideline. Deletions will be indicated by 000 appearing at the end of the lineintervals.

8. This NES has been reissued because of numerous amendments to Issue 2.

Conditions of Release

General

9. This Naval Engineering Standard (NES) has been prepared for the use of the Crown and ofits contractors in the execution of contracts for the Crown. The Crown hereby excludes allliability (other than liability for death or personal injury) whatsoever and howsoever arising(including but without limitation, negligence on the part of the Crown, its servants or agents)for any loss or damage however caused where the NES is used for any other purpose.

10. This document is Crown Copyright and the information herein may be subject to Crown orthird party rights. It is not to be released, reproduced or published without written permissionof the MOD.

11. The Crown reserves the right to amend or modify the contents of this NES without consultingor informing any holder.

MOD Tender or Contract Process

12. ThisNES is the property of the Crown and unless otherwise authorized in writing by theMODmust be returned on completion of the contract, or submission of the tender, in connectionwith which it is issued.


vi

13. When this NES is used in connection with aMOD tender or contract, the user is to ensure thathe is in possession of the appropriate version of each document, including related documents,relevant to each particular tender or contract. Enquiries in this connection may be made ofthe local MOD(PE) Quality Assurance Representative or the Authority named in the tenderor contract.

14. When NES are incorporated into MOD contracts, users are responsible for their correctapplication and for complying with contracts and any other statutory requirements.Compliance with an NES does not of itself confer immunity from legal obligations.

Related Documents

15. In the tender and procurement processes the related documents listed in each section andAnnex A can be obtained as follows:

a. British Standards British Standards Institution,389 Chiswick High Road,London W4 4AL

b. Defence Standards Directorate of Standardization and Safety Policy,Stan 1, Kentigern House, 65 Brown Street,Glasgow G2 8EX

c. Naval Engineering Standards CSE3a, CSE Llangennech, Llanelli,Dyfed SA14 8YP

d. Other documents Tender or Contract Sponsor to advise.

Note: Tender or Contract Sponsor can advise in cases of difficulty.

16. All applications to Ministry Establishments for related documents are to quote the relevantMOD Invitation to Tender or Contract Number and date, together with the sponsoringDirectorate and the Tender or Contract Sponsor.

17. Prime Contractors are responsible for supplying their subcontractors with relevantdocumentation, including specifications, standards and drawings.

Health and Safety

Warning

18. ThisNESmay call for the use of processes, substances and/or procedures thatmay be injuriousto health if adequate precautions are not taken. It refers only to technical suitability and inno way absolves either the supplier or the user from statutory obligations relating to healthand safety at any stage of manufacture or use. Where attention is drawn to hazards, thosequoted may not necessarily be exhaustive.


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CONTENTSPage No

TITLE PAGE i. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SCOPE iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FOREWORD v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sponsorship v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Conditions of Release v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MOD Tender or Contract Process v. . . . . . . . . . . . . . . . . . . . . . . . . .

Related Documents vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Health and Safety vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warning vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 1. PRINCIPLE FOR THE PROTECTION OF GRPSURFACES FROM DAMAGE WHEN PAINTREMOVER IS USED 1.1. . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2. MATERIALS 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.1 List of Materials 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE 2.1 SPECIFIED MATERIALS 2.4. . . . . . . . . .2.2 Barrier Coat (CDL 188/82) 2.5. . . . . . . . . . . . . . . . . . . .2.3 Weatherdeck Non-Slip Compositions 2.5. . . . . . . . . . . .2.4 Modified DEF STAN 80−78, White Interior Fire

Retardant Paint 2.5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.5 Pot Life 2.6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.6 Spreading Rates 2.6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7 Wet and Dry Film Thickness 2.6. . . . . . . . . . . . . . . . . . .2.8 Drying and Curing Times 2.7. . . . . . . . . . . . . . . . . . . . .

SECTION 3. PREPARATION OF SURFACES 3.1. . . . . . . . . . . . . . .3.1 New GRP Smooth Moulded Surfaces 3.1. . . . . . . . . . . .3.2 New GRP Unmoulded (Reverse) Surfaces 3.1. . . . . . . .3.3 Soiled Painted GRP Surfaces 3.1. . . . . . . . . . . . . . . . . .3.4 Removing Paint from GRP 3.2. . . . . . . . . . . . . . . . . . . .3.5 Aluminium Alloy and Non-Ferrous Metal Surfaces 3.2

SECTION 4. INTERIOR COMPARTMENTS 4.1. . . . . . . . . . . . . . . .4.1 General Compartments 4.1. . . . . . . . . . . . . . . . . . . . . . .4.2 GRP Structure not Insulated (including Deckheads)

Moulded and Unmoulded Surfaces 4.1. . . . . . . . . . . . . .4.3 GRP Structure Insulated (including Deckheads) 4.1. .4.4 Exposed Surface of Insulation 4.1. . . . . . . . . . . . . . . . . .4.5 GRP Skin/Balsa Sandwich Core Bulkheads 4.1. . . . . .4.6 Decks 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.7 Dados 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.8 Underside of Plywood False Decks 4.1. . . . . . . . . . . . . .4.9 Internal Compartments not Treated as above 4.2. . . . .4.9.1 Bathrooms and Heads 4.2. . . . . . . . . . . . . . . . . . . . . . . .


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4.9.1.1 GRP Structure not Insulated—Moulded andUnmoulded Surfaces 4.2. . . . . . . . . . . . . . . . . . . . . . . . .

4.9.1.2 GRP/Balsa Core Bulkheads and Exposed Surfacesof Insulation 4.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.10 Machinery Spaces—Engine Room, Generator Room,Pump and Fire Pump Compartments 4.2. . . . . . . . . . .

4.10.1 GRP Structure—not Insulated 4.2. . . . . . . . . . . . . . . . .4.10.1.1 Above the 600mm Datum Level Vertically from the

Keel 4.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.10.1.2 Exposed Surfaces of Insulation 4.2. . . . . . . . . . . . . . . . .4.10.1.3 Machinery Rafts (GRP) 4.2. . . . . . . . . . . . . . . . . . . . . . .4.10.1.4 Machinery Seatings (Aluminium Alloy) 4.2. . . . . . . . . .4.11 Battery Charging Rooms (Main, and PAP) 4.3. . . . . . .4.11.1 Exposed GRP Structure—not Insulated 4.3. . . . . . . . .4.11.2 Exposed Surface of Insulation 4.3. . . . . . . . . . . . . . . . . .4.12 Ventilation Trunking—Interior and Exterior

Surfaces 4.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.13 Decks and to a Height of 600 mm on Boundary

Bulkheads 4.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.14 Fresh Water Tanks 4.3. . . . . . . . . . . . . . . . . . . . . . . . . . .4.15 Sewage Collection Tank 4.3. . . . . . . . . . . . . . . . . . . . . . .4.16 Bridge 4.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.16.1 All GRP Exposed Structure and Insulation 4.3. . . . . . .4.16.2 Underside of False Plywood Deck 4.3. . . . . . . . . . . . . . .4.17 Miscellaneous Items 4.3. . . . . . . . . . . . . . . . . . . . . . . . . .4.17.1 Ventilation Trunking in Interior Compartments 4.3. .4.18 Kit Lockers (Aluminium Alloy) 4.4. . . . . . . . . . . . . . . .4.18.1 Exterior Surfaces 4.4. . . . . . . . . . . . . . . . . . . . . . . . . . . .4.18.2 Furniture 4.4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.18.3 Electrical Equipment 4.4. . . . . . . . . . . . . . . . . . . . . . . . .4.18.4 Metallic Pipe Systems 4.4. . . . . . . . . . . . . . . . . . . . . . . . .4.18.5 Emergency Escape Scuttles (Aluminium Alloy) 4.4. . .4.19 Explosive Lockers and Pyrotechnic Lockers

(Aluminium Alloy) 4.4. . . . . . . . . . . . . . . . . . . . . . . . . . .4.19.1 Internally 4.4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.19.2 Externally 4.5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.20 Spray Painting 4.5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.21 Maintenance of the Coatings in Service 4.5. . . . . . . . . .

SECTION 5. OUTER BOTTOMS (KEEL TO THE UPPER LINEOF BOOT TOPPING) 5.1. . . . . . . . . . . . . . . . . . . . . . . .

5.1 Approved Anti-Fouling Paint Systems 5.1. . . . . . . . . . .5.2 Preparation and Application 5.4. . . . . . . . . . . . . . . . . . .5.2.1 New Construction Ships 5.4. . . . . . . . . . . . . . . . . . . . . . .5.2.1.1 Before Launch 5.4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.2.1.2 Intermediate Dockings during Fitting Out 5.4. . . . . . .5.2.1.3 Final Docking Before Acceptance 5.5. . . . . . . . . . . . . . .5.2.1.4 Underwater Fittings below the Deep Waterline,

Propellers and Shafts (if fitted before Launch) 5.5. . . .5.2.1.5 Shaft Brackets and GRP Rudders 5.5. . . . . . . . . . . . . .


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5.2.1.6 Divers’ Search Lines and Draught Marks 5.5. . . . . . . .5.2.1.7 Hull Surface Roughness Measurements 5.5. . . . . . . . . .5.2.1.8 Routine Dockings in Service 5.5. . . . . . . . . . . . . . . . . . .5.2.1.9 Unprogrammed Dockings 5.6. . . . . . . . . . . . . . . . . . . . .5.3 Vessels in Service at Present Coated with the

TS 10240 161P Anti-Fouling System 5.6. . . . . . . . . . . .5.3.1 Routine Dockings 5.6. . . . . . . . . . . . . . . . . . . . . . . . . . . .5.3.2 Unprogrammed Dockings 5.7. . . . . . . . . . . . . . . . . . . . .5.3.3 Outer Bottoms Where the 161P Anti−Fouling

Requires Complete Removal 5.7. . . . . . . . . . . . . . . . . . .5.4 General 5.8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.4.1 Mixing and Application of the Coatings 5.8. . . . . . . . .5.5 Special Items 5.9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.5.1 Glass Reinforced Plastic Sonar Domes (when fitted) 5.95.5.1.1 New Domes 5.9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.5.1.1.1 Surface Preparation 5.9. . . . . . . . . . . . . . . . . . . . . . . . . .5.5.1.1.2 Painting 5.9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.5.1.2 Maintenance of the Coating in Service 5.9. . . . . . . . . . .

SECTION 6. PAINTING OF WEATHERWORK (Exterior Hullabove Boot Topping, Superstructure, Bulwarks,Mast, Funnel, Deck Equipment and Fittingsincluding the Inside of Weatherdeck Access Doorsand Vent Flap) 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1 New Construction Before Launch 6.1. . . . . . . . . . . . . . .6.2 GRP Surfaces 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.3 Aluminium Alloy and Non-Ferrous Metal 6.1. . . . . . . .6.4 Wood Sheathing on Transom and Ship Sides 6.1. . . . .6.4.1 Faying Surfaces 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.4.2 Exposed Surfaces 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .6.5 Mixing 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.6 Application 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.7 During Fitting Out 6.2. . . . . . . . . . . . . . . . . . . . . . . . . . .6.8 Prior to Acceptance 6.2. . . . . . . . . . . . . . . . . . . . . . . . . .6.9 Ship’s Identification Markings 6.2. . . . . . . . . . . . . . . . .6.10 Maintenance in Service 6.2. . . . . . . . . . . . . . . . . . . . . . .6.11 Removal and Renewal of the Paint System 6.3. . . . . . .6.11.1 GRP Surfaces 6.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.11.2 Aluminium Alloy Metal and Wood 6.3. . . . . . . . . . . . . .

SECTION 7. PAINTING OF WEATHERDECKS (ex AreasCovered with Trawlerdeck Material) 7.1. . . . . . . . . . . .

7.1 Preparation of Surfaces 7.1. . . . . . . . . . . . . . . . . . . . . . .7.2 Mixing 7.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.3 Application 7.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.4 Helicopter Drop Zone (Canopy Deck) 7.3. . . . . . . . . . .7.5 Maintenance in Service 7.3. . . . . . . . . . . . . . . . . . . . . . .7.6 Weatherdecks at Present Coated with Improved

Suede Non-Slip Coatings 7.3. . . . . . . . . . . . . . . . . . . . . .


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SECTION 8. QUALITY ASSURANCE AND INSPECTION 8.1. . . .8.1 General 8.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.2 Surface Preparation 8.1. . . . . . . . . . . . . . . . . . . . . . . . . .8.3 Paint Mixing 8.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.4 Application 8.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.5 Environmental Conditions 8.2. . . . . . . . . . . . . . . . . . . . .8.6 Measurement of Wet Film Thickness 8.2. . . . . . . . . . . .8.7 Hull Surface Roughness Measurement 8.2. . . . . . . . . . .

SECTION 9. RECOMMENDED HEALTH AND HYGIENEPRECAUTIONS WHEN APPLYING ORREMOVING ERODABLE AND GRASSLINETIN-FREE ANTI-FOULINGS—TO BE READ INCONJUNCTION WITH LOCAL ORDERS ANDSTANDING INSTRUCTIONS 9.1. . . . . . . . . . . . . . . . .

9.1 General 9.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.2 Precaution of Exposure 9.1. . . . . . . . . . . . . . . . . . . . . . .9.3 Hygiene and Amenities 9.1. . . . . . . . . . . . . . . . . . . . . . . .9.4 Issue, Cleaning and Laundering of Protective

Clothing and Equipment 9.1. . . . . . . . . . . . . . . . . . . . . .9.5 Health Surveillance 9.2. . . . . . . . . . . . . . . . . . . . . . . . . .9.6 First Aid 9.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.7 Storage and Use 9.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.8 Ship’s Openings, Ventilation Systems etc 9.2. . . . . . . . .9.9 Warning Notices 9.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.10 Precautions where Spraying in an Open Graving

Dock 9.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.11 Guidance on Personal Protection Requirements when

Spraying takes place in an Open Graving Dock 9.3. . .9.11.1 Spray Operator and Attendants 9.3. . . . . . . . . . . . . . . .9.11.2 Personnel Alongside or Underneath Sprayer—as for

Clause 9.11.1a. 9.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.12 Precautions in an Enclosed Environment with

Multiple Graving Docks 9.4. . . . . . . . . . . . . . . . . . . . . . .9.13 Precautions during Spraying in an Enclosed

Environment without Graving Docks 9.4. . . . . . . . . . . .9.14 Precautions to be followed after Application of

Erodable Anti-Fouling 9.5. . . . . . . . . . . . . . . . . . . . . . . .9.14.1 Cleaning of Dock 9.5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.14.2 Cleaning of Equipment 9.5. . . . . . . . . . . . . . . . . . . . . . .9.14.3 Hazard from Painted Surfaces 9.5. . . . . . . . . . . . . . . . .9.14.4 Work on Painted Surfaces 9.5. . . . . . . . . . . . . . . . . . . . .9.15 Precautions to be followed during Removal of

Erodable Anti-Fouling Coating 9.5. . . . . . . . . . . . . . . . .

SECTION 10. COMPARTMENTS AND ITEMS NOT TO BEPAINTED 10.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ANNEX A. RELATED DOCUMENTS A.1. . . . . . . . . . . . . . . . . . . .

ANNEX B. DEFINITIONS AND ABBREVIATIONS B.1. . . . . . . .

ANNEX C. TABLE FOR CALCULATING MINIMUM ANDMAXIMUM OVERCOATING TIMES C.1. . . . . . . . . .


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ANNEX D. MEASUREMENT OF WET PAINT FILMTHICKNESSES D.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .FIGURE D.1 DIAGRAMMATICALREPRESENTATION OF A TYPICAL MEASURINGSCALE D.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ANNEX E. PROCEDURE AND GUIDANCE INSTRUCTIONSFOR MEASURING HULL SURFACE ROUGHNESS,USING THE BSRA (BMT) MK II HULL SURFACEROUGHNESS ANALYSER E.1. . . . . . . . . . . . . . . . . . . .FIGURE E.1 LOCATION MAP FORROUGHNESS E.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ANNEX F. PROCUREMENT CHECK LIST F.1. . . . . . . . . . . . . . .

ANNEX G. REPORT OF DOCKING, SLIPPING ORLAUNCH G.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ALPHABETICAL INDEX


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1.1

1. PRINCIPLE FOR THE PROTECTION OF GRP SURFACES FROM DAMAGEWHEN PAINT REMOVER IS USED

a. Unlike metal or wood, exposure of GRP to the effects of paint remover willalmost certainly result in damage to the material with costly consequences,especially if the paint coatings are allowed to soak in the paint remover forlonger than stipulated in the instructions contained in NES 762.

b. To afford some protection to the GRP surfaces in this eventuality a blue tintedtranslucent epoxy/polyamide lacquer barrier coat to formulation CDL 188/82 isspecified to be applied before overcoating with paint systems which may notshow signs of readily softening in the normal manner after the paint removerapplication.

c. The barrier coat is somewhat resistant to the effect of the DEF 1443 PaintRemover specified to be used for the removal of the paint coatings from GRP,and will be left unimpaired, thereby protecting the underlying surface,providing that the paint remover is used following the instructions containedinNES 762 and all softened paint arisings together with paint removal residuesare removed by washing the surface as soon as the paint coatings have beenremoved.

d. On no account are attempts to be made to remove the barrier coat, or use otherthan the specified paint remover without prior approval from Section NA 131.


1.2


2.1

2. MATERIALS

2.1 List of Materials

a. The particulars of materials to which this Standard refers are listed inTABLE 2.1.

MATERIAL QTY SPECIFICATIONOR

MANUFACTURER

NATO STOCK NO

Epoxy Polyamide LacquerBarrier Coat

5 litres REF CDL 188/82 8010−99−543−2616

Pretreatment Primer,Base

5 litres DEF STAN 80−15 8010−99−220−4527

Acid Reducer for BrushingAcid Reducer for Spraying

2½ litres2½ litres

DEF STAN 80−15DEF STAN 80−15

8010−99−220−45288010−99−220−4529

Paint HB PolyurethaneRoyal White

20 litres5 litres

Jotun Henry ClarkLtd

* GX0001756* GX0001757

Priming YellowZinc Chromate

10 litres DEF STAN 80−77 8010−99−225−0896

Paint Priming Aluminium 10 litres DGS 1023 8010−99−225−0900

Paint UnderwaterProtection for SteelAcc 655 Chocolate

10 litres DEF 1441 8010−99−225−0880

Abrasive Paper SiliconCarbide

Grade P120Grade P220Grade P320

BS 871 5350−99−224−60665350−99−129−39365350−99−129−3939

Concentrated GeneralPurpose Detergent

5 litres DGS 305 7930−99−224−6187

Painter RemoverTrichlorethlene based,Water rinsable

5 litres DEF 1443 8010−99−923−1717

Painter RemoverDichloromethlane based,Water rinsable

5 litres DEF STAN 80−14 8010−99−220−2307

Paint Coal Tar EpoxyBrownBlack

5-litrepacks

DEF STAN80−112 8010−99−220−5643

8010−99−220−5754

Paint Interior Finishing,Fire Retardant

WhiteRedAsh Grey BS4800

00−A−01

10 litres2½ litres5 litres

DEF STAN 80−78

8010−99−225−08958010−99−220−56878010−99−224−8161

TABLE 2.1 SPECIFIED MATERIALS

Contd


2.2

Contd


MANUFACTURER

NATO STOCK NO

Paint Finishing InteriorDecks and Dados

BrownFawnGreenRed

10 litres10 litres10 litres10 litres

DGS 1035

8010−99−225−08788010−99−225−08778010−99−225−08768010−99−225−0875

Paint Acid and AlkaliResisting ChlorinatedRubber

PrimerFinishing White

Black

5 litres5 litres5 litres

DEF STAN80−72/1

8010−99−943−44798010−99−942−87108010−99−943−4481

Paint Finishing GeneralService Gloss, for PipeIdentification etc

DEF STAN 80−54

Golden Brown BS 381CNo 414

500 ml DEF STAN 80−54 8010−99−543−0266

Light Orange BS 381CNo 557

500 ml DEF STAN 80−54 8010−99−543−0268

Golden Yellow BS 381CNo 356

500 ml DEF STAN 80−54 8010−99−543−0273

Light Stone BS 381CNo 361

500 ml DEF STAN 80−54 8010−99−543−0272

Mid Brunswick GreenBS 381C No 226

500 ml DEF STAN 80−54 8010−99−543−0267

Salmon Pink BS 381CNo 447

500 ml DEF STAN 80−54 8010−99−543−0269

Signal Red BS 381CNo 537

500 ml DEF STAN 80−54 8010−99−543−0270

Azure Blue BS 381CNo 104

500 ml DEF STAN 80−54 8010−99−543−0265

Venetian Red BS 381CNo 445

500 ml DEF STAN 80−54 8010−99−543−0271

Paint Finishing GeneralService Gloss for Marineuse, Green BS 4800

14−C−392½litres10 litres

DEF STAN 80−29

8010−99−220−16388010−99−224−6047

Thinner/Cleaner for PaintEpoxy Finishing Suede5/6 K 8636

5 litre W J Leigh Co 8010−99−225−0694

Paint WeatherworkUndercoating BS 381CNo 637 Medium Sea Grey

2½ litres10 litres

TS 10266 8010−99−224−67528010−99−225−0889


Contd


2.3

Contd


MANUFACTURER

NATO STOCK NO

Paint WeatherworkFinishing High DurabilityBS 381C No 676Weatherwork Grey

2½ litres10 litres

TS 10316 8010−99−772−54488010−99−772−5449

Paint Vinyl Modified CoalTar Epoxy Tie CoatINTERTUF JXA 464/JXA 465

20 litres InternationalPaintsMarine Coatings

8010−99−250−9580

Paint Anti-fouling HISOLSPC BFA 9 SERIES

096 Pink094 PlumM050 Black


InternationalPaintsMarine Coatings

8010−99−250−60048010−99−250−60058010−99−251−2413

Paint Anti-FoulingSPC BFA 9 SERIES

096 Pink094 PlumM052 GreyM050 Black

Cleaning Solvents

20 litres20 litres20 litres20 litres

InternationalPaintsMarine Coatings 8010−99−728−8342

8010−99−728−83438010−99−728−83448010−99−754−96878010−99−728−8345

Paint Vinyl Modified CoalTar Epoxy Tie CoatVINYGUARD

Black 20 litres

Jotun HenryClark Ltd

8010−99−772−1749

Paint Anti-Fouling SPCSEAMATE HB66

Light RedDark RedBlackThinners No 7Thinners No 15


Jotun HenryClark Ltd

8010−99−772−17478010−99−772−17488010−99−772−17508010−99−772−17518010−99−772−1752

Paint Modified Coal TarEpoxy Tie CoatCOLTURIET TCN

20 litres Sigma MarineCoatings Ltd

8010−99−775−4701

Paints Anti-FoulingSIGMAPLANE HB

Red/BrownGreen

20 litres20 litres

Sigma MarineCoatings Ltd

8010−99−775−47028010−99−776−4224

Paint Vinyl Modified CoalTar Epoxy Tie CoatHEMPANYL 1628

20 litres Hempels MarineCoatings Ltd

Paint Epoxy COLTURIETPITACOTE HB 5441

Sigma CoatingsAllweather PaintsLtd


Contd


2.4

Contd


MANUFACTURER

NATO STOCK NO

Paint Anti-Fouling SPCNAUTIC HI−7695

Light RedRedThinners 0808

20 litres20 litres

Hempels MarineCoatings Ltd

8010−99−776−73818010−99−776−73808010−99−776−7382

Paint Anti-FoulingGRASSLINE Tin-FreeType M396 Black

20 litresW J Leigh Co

8010−99−527−9622

Paint Anti-Fouling317 Black 20 litres

TS 102398010−99−220−5664

Paint Anti-Fouling 161PRedChocolate

20 litres20 litres

TS 102408010−99−220−35238010−99−521−1951

CAMIDECK ADM Primer201 E−2925

5 litres25 litres

Camrex Ltd 8010−99−541−95798010−99−541−9578

CAMIDECK ADMNon-Slip Finish521E−0266BS 381C No 632

GreyWhiteGrey


Camrex Ltd

8010−99−541−95818010−99−541−95808010−99−541−9583

EPIGRIP Non-Slip FlightDeck Paint M377 ColourBS 381C No 632

GreyWhite

4 litres4 litres

W J Leigh Co

8010−99−777−86898010−99−777−8690

Paint Epoxy PrimerEPIGRIP H 795

500 ml4 litres

W J Leigh Co 8010−99−225−01948010−99−225−0195

Paint Epoxy FinishingSuede EPIGRIP L716Colour BS 4800 18−B−25

500 ml5 litre

W J Leigh Co 8010−99−225−06938010−99−225−0692

Epoxy Primer REFPRI−POXO 3C

AmericanAbrasivesMetal Co Ltd

8010−99−801−8878

Epoxy Non-Slip DeckPaint EPOXO 300C

AmericanAbrasivesMetal Co Ltd

8010−99−801−8873

Paint EmulsionCopolymer

5 litres DEF STAN80−125

8010−99−224−4894

NB. * Denotes temporary Naval Store Stock Numbers.


b. The characteristics of some of the materials are noted in the following.


2.5

2.2 Barrier Coat (CDL 188/82)

a. The barrier coat is an epoxy/polyamide blue tinted translucent lacquer, suppliedas a two-component material consisting of:

Part A (base) in 2½ litre containers.

Part B (curing agent) 2½ litres in 5 litre containers.

b. Before application the two components are mixed separately after which thebase is added to the blue tinted curing agent, and the whole then thoroughlystirred until a homogeneous uniform blue mix is obtained. The mixing ratiobeing 1 part base and 1 part curing agent by weight.

c. The lacquer is specifically formulated for application by brush. Two coats arespecified to be applied, each spread at approximately 9 square metres per litreto produce awet film thickness of 50μmper coat, allowing not less than 16hoursor more than 72 hours between each application.

d. In hot, well ventilated conditions, an interval of 16 hours between theapplications will normally suffice. Nevertheless, a check is to be made to ensurethat the first coat is hard dry to avoid the risk of lifting during the brushing outof the second coat.

2.3 Weatherdeck Non-Slip Compositions

a. The approved weatherdeck non-slip coatings listed in this Standard arepigmented epoxy resin-based materials, incorporating non-slip aggregates inthe homogeneous mix during manufacture.

b. Thematerial is supplied as two components, the base incorporating thenon-slipaggregates, and the curing agent, which must be thoroughly mixed together inthe volume ratios recommended by the respective manufacturers before use.

c. The non-slip aggregates will fall out of suspension with the basematerial duringstorage, and if left undisturbed for any length of time during application. It istherefore important that the aggregate settlement is thoroughly stirred intosuspension in the base before adding to the curing agent, and that the mixedmaterial is frequently stirred during application. The pot life of the materialafter mixing is normally 8 hours after which time it is to be discarded, and freshmaterial mixed.

2.4 Modified DEF STAN 80−78, White Interior Fire Retardant Paint

a. The DEF STAN 80−78 White Interior Fire Retardant paint is modified byadding 4%of Bentone 38 bymass. Adding the Bentone andmixing in thenormalmanner before application does not uniformily disperse the Bentone in thepaint.

b. It is therefore, advisable to ask the approved supplier to carry out themodification of the quantity of paint required in this respect, before delivery.


2.6

2.5 Pot Life

a. When the base and curing agent of two-component paint materials are mixedtogether before use, chemical reaction between the two constituentscommences immediately and the mixed material slowly thickens until after aperiod of time the paint can no longer be applied in the normalmanner. The timebefore this unusable state is reached will vary according to the ambienttemperature which prevails at the time. Under normal temperature condition,ie 10° C−15° C the paint will remain usable for up to 8 hours whilst at atemperature of 25° C, the pot lifemay be as short as 4 hours. In any event as soonas themixed paint reaches a state when it can no longer be satisfactorily stirredand applied in the normal manner it is to be discarded and a further mixprepared. Onno account ismaterial mixed in one day to be carried over andusedon the next.

2.6 Spreading Rates

a. The theoretical spreading rate is that achieved by correct application of an exactlitre of the paint over a surface in order to produce the dry film thicknessspecified. However, paint wastage inevitably occurs during actual paintingoperations and this is normally never less than 10%, and has frequently beenfound to be as high as 30%. The method of application has also some bearing onthe amount of wastage. The usual method of calculating the practical spreadingrate is to reduce the theoretical spreading rate by 20%.

b. When paint coatings are applied using paint rollers or brushes, there is atendency for operators to spread the paint out in excess of the spreading raterecommended to produce the dry film thickness specified. This will varyconsiderably between operators and may result in several more coats requiringto be applied, to produce the stipulated total dry film thickness of the coating.

2.7 Wet and Dry Film Thickness

a. The wet film thickness of solvent-based paints when first applied graduallyreduces during the drying action due to evaporation of the solvent content,whether the coating dries through oxidation or by chemical reaction whencatalysts are added to the base paint component during mixing beforeapplication. The reduction in the wet film on drying will vary according to thevolume solids in the paintmaterial, andmay be as high as 60% or as low as 20%.

b. It is therefore important that the wet film thickness of the coatings befrequently measured during application to ensure that when dry the film willbe to the required thickness, and so avoiding the need for further coats.

c. Wet film thicknesses of coatings also require to be measured during applicationwhen figures as specified with respect to maximum wet film thickness.

d. The percentage of the wet film thickness retained in the film on drying isnormally arrived at using the formula as under.

Dry film thicknessWet film thickness

× 100 per cent


2.7

2.8 Drying and Curing Times

a. The minimum time before overcoating a paint film is the time taken for thesolvents to evaporate and the film to become hard dry. This is very importantsince overcoating before this stage is reached will result in solvent entrapmentin the underlying coating, and consequent stripping. The maximumovercoating time referred to in this standard relates to coatings which dry andcure by chemical reaction between the paint components, and is the time takenfor the bulk of the solvent to evaporate and the coating to fully cure, after whichtime, subsequent coatings applied will not satisfactorily adhere.

b. The minimum and maximum time with respect to overcoating is influenced bythe environmental conditions which prevail at the time coatings are beingapplied particularly, ambient temperature, temperature of the substratesurface and ventilation. The respective times quoted for the paints specified foruse are based on an ambient temperature of 10° C−15° C. At lower temperaturesdown to 5° C a longer period before overcoating would be required. A table forguidance in calculating theminimum andmaximum overcoating times at loweror higher temperatures is placed at Annex C.


2.8


3.1

3. PREPARATION OF SURFACES

a. The following methods of surface preparation are to be undertaken prior topainting.

3.1 New GRP Smooth Moulded Surfaces

a. The sides of the GRP which are laid against the mould during manufacturebecome coated with wax which must be removed from the surfaces in as shorta time as possible after the GRP is taken from the mould and certainly no morethan 8 weeks after.

b. The wax is to be thoroughly removed by washing the surface with a 5% solutionby volume of concentrated general purpose detergent, DG Ships 305, in hotfresh water, and scrubbing with a stiff bristle brush in conjunction with thewashing in order to agitate the detergent film.

c. After washing and scrubbing, the surfaces are to be allowed to stand for 10−15minutes and then finally thoroughly rinsed off with copious amounts of freshclean water, to remove all residues, and then allowed to dry.

d. Prior to painting, the surfaces are again to be washed with the 5% solution byvolume of concentrated general purpose detergent, and lightly abraded withBS 871Grade 120waterproof silicon carbide abrasive paper in conjunction withthe washing, to produce a clean flat/matt surface, and then thoroughly rinsedoff with clean fresh water, and allowed to dry.

e. When abrading the surface care is to be taken not to expose the underlying glassfibres.

3.2 New GRP Unmoulded (Reverse) Surfaces

a. Unmoulded surfaces are assumed to be free of wax. If however, the surfacesbecome contaminated with the wax during handling then this is to be removedfollowing the procedure set out in Clauses 3.1b. and 3.1c.

b. Unmoulded surfaces free from wax contamination are to be prepared bywashing with a 2% solution by volume of concentrated general purposedetergent toDGS 305, in hot fresh water and scrubbing with a stiff bristle brushin conjunction with the washing. Finally thoroughly washing off with cleanfresh water to remove the surface residues, and then allowing to dry.

c. No painting is to be carried out on freshly laid up laminate, or recently filledareas. Where fillers based on polyester resin have been used sufficient time isto be allowed to lapse in order to allow the residual styrene to dry off.

3.3 Soiled Painted GRP Surfaces

a. Generally, soiled painted surfaces are to be cleaned by washing with a 2%solution by volume of concentrated general purpose detergent to DG Ships 305in hot fresh water, and agitating the detergent film by scrubbing with a softbristle brush. The surface is to be allowed to stand for 10−15minutes and thenfinally rinsed off with clean fresh water in order to remove all dirt and otherresidues. In any event the strength of the detergent solution is not to exceed 5%by volume.

b. After washing, surfaces which require repainting to restore the cosmeticappearance, are to be lightly abraded to a matt surface using Grade 320 siliconcarbide abrasive paper in conjunction with washing with a 2% solution byvolume of the concentrated general purpose detergent in fresh water followedby rinsing off with clean fresh water, and then allowing to dry.


3.2

3.4 Removing Paint from GRP

a. The removal of paint fromGRP is to be by the use of paint remover toDEF1443,following the instructions contained inNES 762. On no account are other typesof paint removers to be used for the purpose without prior approval fromSection NA 131.

b. Once applied the paint remover is not to be allowed to act for more than 15minutes before the resultant softened paint film is removed by carefullyscraping with plastic or wooden scrapers, repeating the process if necessary onlyuntil the underlying blue paint remover resistant barrier coat is revealed.Further soaking with paint remover in an attempt to remove the barrier coatingwill almost certainly result in damaging the underlying GRP and is not beundertaken.

3.5 Aluminium Alloy and Non-Ferrous Metal Surfaces

a. Before painting, aluminimum alloy and non-ferrous metal surfaces are to bethoroughly degreased and then pretreated following the instructions containedinNES 759. Removal of paint coatings from such surfaces is to be by using PaintRemover to DEF STAN 80−14 and following the instructions contained inNES 762.


4.1

4. INTERIOR COMPARTMENTS

a. All GRP surfaces in internal compartments are to be prepared as in Clauses3.1a.−3.2b. and then painted in accordance with Clauses 4.1a.−4.8b. allowingat least 16 hours between coats.

4.1 General Compartments

a. These are Stores, Lobbies, Passageways, Messdecks, Dining Halls, Wardroom,Cabins, Offices, Pantry, Laundry, Magazines, Air Locks, Switch Board Room,Ship’s Control Centre, Steering Gear Compartment, Gyro Compass Room,Rectifier Compartment, Hydraulic Pump Room, Fridge MachineryCompartment, Sonar Space(s), Conversion, Machinery Room, Audit AmplifierCompartment, Fan Chambers, Galley.

4.2 GRP Structure not Insulated (including Deckheads) Moulded and UnmouldedSurfaces

a. 1 coat of White Interior Fire Retardant paint to DEF STAN 80−78 modified forthe first coat.

and

2 coats of Ash Grey Interior Fire Retardant paint to DEF STAN 80−78.

4.3 GRP Structure Insulated (including Deckheads)

a. Surface behind insulation—unpainted.

4.4 Exposed Surface of Insulation

a. 2 coats of Ash Grey Interior Fire Retardant paint to DEF STAN 80−78.

4.5 GRP Skin/Balsa Sandwich Core Bulkheads

a. 1 coat of modified White Interior Fire Retardant paint to DEF STAN 80−78.


b. InMessdecks, DiningRooms, andCabins the structure except for deckheads areto be finally painted with 2 coats of Interior Fire Retardant paint toDEF STAN 80−78 Colour BS 4800 00A0I Ash Grey over themodified first coat,instead of the white coats specified elsewhere.

4.6 Decks

a. Unless otherwise specified in the building specifications decks requiring to bepainted are to be prepared and then coated with 2 coats of Barrier coating CDL188/82 followed by 2 coats of Improved EPIGRIP Suede Non-Slip paint L716,Green Colour BS 4800 No 14−C−39.

4.7 Dados

a. Dados are to be painted in over the White Fire Retardant paint with 2 coats ofpaint finishing to DG Ships 1035 in either Brown, Fawn, Green or Red. Theheight of the dados is not to exceed 300mm in Accommodation Spaces and600mm in Stores, Workshops etc.

4.8 Underside of Plywood False Decks

a. Plywood which is not rot-proof or fire-proof is to be painted with 2 coats ofAluminium Paint to DG Ships 1023 before final assembly.


4.2

b. Plywood which has been treated against rot and fire, together with the GRPdeck under, need not be painted.

4.9 Internal Compartments not Treated as above

4.9.1 Bathrooms and Heads

4.9.1.1 GRP Structure not Insulated—Moulded and Unmoulded Surfaces

a. 2 coats of Barrier coat CDL 188/82.

2 coats of Royal White polyurethane paint to a wet film thickness of 115μm percoat to produce a total dry film thickness of 100μm

b. Exposed insulation—2 Coats of Royal White Polyurethane finishing paint.

4.9.1.2 GRP/Balsa Core Bulkheads and Exposed Surfaces of Insulation

a. 2 coats of Royal White polyurethane finishing paint. Structure beneathinsulation is not to be painted.

4.10 Machinery Spaces—Engine Room, Generator Room, Pump and Fire PumpCompartments

4.10.1 GRP Structure—not Insulated

4.10.1.1 Above the 600mm Datum Level Vertically from the Keel



4.10.1.2 Exposed Surfaces of Insulation

a. coats of White Interior Fire Retardant paint to DEF STAN 80−78.

4.10.1.3 Machinery Rafts (GRP)



4.10.1.4 Machinery Seatings (Aluminium Alloy)

a. Prepare as in Clause 3.5a. followed by:

1 coat of Pretreatment (Etch) primer to DEF STAN 80−15.

3 coats of Yellow Zinc Chromate primer to DEF STAN 80−77.

2 coats of Ash Grey Fire Retardant paint to DEF STAN 80−78.

b. Structure below the 600mm datum level, structure behind insulation, GRPperforated acoustic lining, floor plates, gratings and handrails are not to bepainted.


4.3

4.11 Battery Charging Rooms (Main, and PAP)

4.11.1 Exposed GRP Structure—not Insulated


1 coat of Chlorinated Rubber primer to DEF STAN 80−72.

2 coats of White Chlorinated Rubber finishing paint to DEF STAN 80−72.

4.11.2 Exposed Surface of Insulation

a. 3 coats of White Chlorinated Rubber finishing paint.

4.12 Ventilation Trunking—Interior and Exterior Surfaces

a. 1 coat of Chlorinated Rubber primer to DEF STAN 80−72.

2 coats of White Chlorinated Rubber finishing paint to DEF STAN 80−72.

4.13 Decks and to a Height of 600 mm on Boundary Bulkheads


1 coat of Chlorinated Rubber primer to DEF STAN 80−72.

2 coats of Black Chlorinated Rubber finishing paint to DEF STAN 80−72.

4.14 Fresh Water Tanks

a. 2 coats of COLTURIET Pitakote high build epoxy paint mixed and applied inaccordance with the manufacturer’s instructions. After the coatings have beenapplied the tanks are to be thoroughly ventilated to remove all solvent fumesand the tanks then thoroughly flushed out at least 3 times with fresh waterbefore closing up. Before being brought into use all tanks are to be chlorinatedin accordance with BR 820. Only medically fit men with high standards ofpersonal cleanliness and hygiene are to be employed in fresh water tanks. Cleanoveralls and clean canvas shoes are to be provided and worn by all personnelwithin the tanks.

4.15 Sewage Collection Tank

a. After initial preparation the internal surfaces are to be abrasive blasted usingaluminium oxide abrasive Grade 1 14−23 BS mesh size, and then coated with3 coats of coal tar epoxy paint to DEF STAN 80−112 following a sequence ofblack, brown, black mixed and applied in accordance with NES 756.

4.16 Bridge

4.16.1 All GRP Exposed Structure and Insulation

a. 2 coats of White Copolymer emulsion paint to TS 10079. (Def Stan 80−125).

4.16.2 Underside of False Plywood Deck

a. See Clauses 4.8a. and 4.8b.

4.17 Miscellaneous Items

4.17.1 Ventilation Trunking in Interior Compartments

a. To be painted as for surrounding structure. Mark whether supply or exhaustand indicate airflow.


4.4

4.18 Kit Lockers (Aluminium Alloy)

4.18.1 Exterior Surfaces


1 coat of Pretreatment primer to DEF STAN 80−15.

1 coat of Stoving primer to DEF 1059A.

2 coats of Stoving enamel to DEF 1059A, Colour BS 4800 10−C−31.

b. Interior surfaces are not to be painted.

4.18.2 Furniture

a. Items of furniture are to be painted in accordance with Clause 4.18.1a. with theexception that the finishing colour is to conform to the Master Decor andUpholstery Plan.

4.18.3 Electrical Equipment

a. To be painted in accordance with the instructions contained in NES 507—Materials and Finishing Electrotechnical Equipment.

Electric cables are not to be painted.

4.18.4 Metallic Pipe Systems

a. Metallic pipe systems are to be painted as for the surrounding structure inwhich they are sited, andmarked with identifying bands of colour in accordancewith instructions on Navy Form S1188. Using General Service Gloss finishingpaint, DEF STAN 80−54, or by affixing bands of tape in the appropriate pipesystem identification colour and marked with the description of the pipesystem.

4.18.5 Emergency Escape Scuttles (Aluminium Alloy)

a. 1 coat of Etch primer to DEF STAN 80−15.

2 coats of Yellow Zinc Chromate primer to DEF STAN 80−77.

2 coats of Paint Finishing General Service Gloss Green to DEF STAN 80−54.

b. The word ‘ESCAPE’ is to be painted in White on a Green background on thedeckhead or bulkhead adjacent to the scuttles.

4.19 Explosive Lockers and Pyrotechnic Lockers (Aluminium Alloy)

4.19.1 Internally


1 coats of Pretreatment (Etch) primer to DEF STAN 80−15.

2 coats of Yellow Zinc Chromate to DEF STAN 80−77.

2 coats of Interior Fire Retardent paint to DEF STAN 80−78, Colour BS 381CNo 537 Red.


4.5

4.19.2 Externally


1 coat of Pretreatment (Etch) primer to DEF STAN 80−15.

2 coats of Yellow Zinc Chromate to DEF STAN 80−77.

2 coats of General Service Gloss paint to DEF STAN 80−54 Colour, BS 38 1CNo 537 Red.

4.20 Spray Painting

a. Spray painting is not to be carried out in internal compartments after theinstallation of electrical equipment and the like has commenced.

4.21 Maintenance of the Coatings in Service

a. Maintenance to the coatings in service is to be confined to frequent washing torestore cosmetic appearance, and the repair touching up of damaged areas. Thebuild up of paint coating to excessive thickness increases the hazards in theevent of a fire. In view of this, overall repainting the structure is only to becarried out when frequent washing no longer restores the appearance. On noaccount is overall repainting to be carried out in lieu of washing as a matter ofcourse.


4.6


5.1

5. OUTER BOTTOMS (KEEL TO THE UPPER LINE OF BOOT TOPPING)

5.1 Approved Anti-Fouling Paint Systems

a. Unless otherwise specified the Outer Bottoms of New Construction GRP Shipsare to be coated with one of the following approved erodable anti-fouling paintsystems. No other manufacturer’s erodable anti-fouling paint systems are to beapplied without the approval of Section NA 131. W J Leigh Co GRASSLINEpaint is to be used for boot topping with all paint systems.

(1) Messrs International Paints Marine Coatings Ltd

Intersmooth HISOL BFA 9 series erodable anti-fouling.

(a) Before Launch

1 coat of INTERTUF ref JXA 464/JXA 465 vinyl coal tar epoxy tiecoat overall spread at approximately 7.3m2 per litre to a wet filmthickness of 136μmto produce a dry film thickness of 75μmfollowedwithin 5 days with:

(b) Keel to Lower Edge of Boot Topping

1 coat of HISOL BFA 096 Pink anti-fouling spread at approximately3.3m2 per litre to a wet film thickness of 300μm, to produce a dryfilm thickness of 150μm.

(c) Boot Topping

1 coat of W J Leigh Co GRASSLINE Tin-free Type M396conventional Black anti-fouling spread at approximately 6.8m2 perlitre, to awet film thickness of 147μmtoproduce adry film thicknessof 50μm.

(2) Final Docking Before Acceptance

Keel to Lower Line of Boot Topping

1 coat of HISOL BFA 094Plum anti-fouling spread at approximately3.3m2 per litre to awet film thickness of 300μmto produce a dry filmthickness of 150μm.

Boot Topping

2 coats of GRASSLINE Tin-free Type M396Black conventional antifouling spread at approximately 6.8m2 per litre to a wet filmthickness of 147μmto produce a dry film thickness of 50μmper coat,allowing at least 16 hours between each application.

(3) Messrs Jotun Henry Clark Marine Coatings Ltd

SEAMATE HB 66 Erodable Anti-Fouling

(a) Before Launch

1 coat of VINYGUARD tar tie coat overall spread at approximately4m2 per litre to a wet film thickness of 240μm to produce a dry filmthickness of 80μm, followed in not more than 5 days with:


5.2


coat of SEAMATE HB 66 Light Red anti-fouling spread atapproximately 3.5m2 per litre to a wet film thickness of 300μm toproduce a dry film thickness of 150μm.

Boot Topping

1 coat of W J Leigh Co GRASSLINE Tin-free Type M396 Blackanti-fouling spread at approximately 6.8m2 per litre, to a wet filmthickness of 147μm to produce a dry film thickness of 50μm.

(b) Final Docking Before Acceptance


1 coat of SEAMATE HB 66 Dark Red anti-fouling spread atapproximately 3.5m2 per litre to a wet film thickness of 300μm toproduce a dry film thickness of 150μm.

Boot Topping

2 coats of W J Leigh Co GRASSLINE Tin-free Type M396 Blackanti-fouling spread at approximately 6.8m2 per litre to a wet filmthickness of 147μmto produce a dry film thickness of 50μmper coat,allowing at least 16 hours between each application.

(4) Messrs Hempels Marine Coatings Ltd

NAUTIC HI 7695 Erodable Anti-Fouling

(a) Before Launch

1 coat of HEMPANYL 1628 vinyl modified coal tar epoxy tie coatoverall spread at approximately 5m2 per litre to a wet film thicknessof 200μm to produce a dry film thickness of 75μm followed in notmore than 5 days with:


1 coat of NAUTIC HI 7695 Light Red anti-fouling spread atapproximately 3m2 per litre to a wet film thickness of 325μm toproduce a dry film thickness of 150μm.

Boot Topping

1 coat of W J Leigh Co GRASSLINE Tin-free Type M396 Blackconventional anti-fouling spread at approximately 6.8m2 per litre,to a wet film thickness of 147μm to produce a dry film thickness of50μm.



1 coat of NAUTIC HI 7695 Red anti-fouling spread at approximately 3m2per litre to a wet film thickness of 325μm to produce a dry film thicknessof 150μm.


5.3

Boot Topping

2 coats of W J Leigh Co GRASSLINE Tin-free Type M396 Blackconventional anti-fouling spread at approximately 6.8m2 per litre to awetfilm thickness of 147μm to produce a dry film thickness of 50μm per coat.

(6) Messrs Sigma Marine Coatings Ltd

SIGMAPLANE HB Erodable Anti-Fouling

(a) Before Launch

1 coat of COLTURIET TCN vinylmodified coal tar epoxy tar tie coatoverall spread at approximately 8.7m2 per litre to a wet filmthickness of 115μmto produce a dry film thickness of 75μmfollowedin not more than 5 days with:


1 coat of SIGMAPLANE HB Green anti-fouling spread atapproximately 2.7m2 per litre to a wet film thickness of 375μm toproduce a dry film thickness of 150μm.

Boot Topping

1 coat of W J Leigh Co GRASSLINE Tin-free Type M396 Blackconventional anti-fouling spread at approximately 6.8m2 per litre toa wet film thickness of 147μm to produce a dry film thickness of50μm.



1 coat of SIGMAPLANE HB red/brown anti-fouling spread atapproximately 2.7m2 per litre to a wet film thickness of 325μm to producea dry film thickness of 150μm.

Boot Topping

2 coats of W J Leigh Co GRASSLINE Tin-free Type M396 Blackconventional anti-fouling spread at approximately 6.8m2 per litre to awetfilm thickness of 147μm to produce a dry film thickness of 50μm per coat,allowing at least 16 hours between each application.

(8) Messrs International Marine Paints Ltd

Intersmooth BFA 900 Series Erodable Anti-Fouling

(a) Before Launch

1 coat of INTERTUF JXA 462/JXA 463 vinyl modified coal tar epoxytie coat overall spread at approximately 7.3m2 per litre to a wet filmthickness of 136μm to produce a dry film thickness of 75μm,followed in not more than 5 days with:


1 coat of INTERTUF BFA Series 9 ref BFA 094 Plum anti-foulingspread at approximately 4m2 per litre to a wet film thickness of270μm to produce a dry film thickness of 100μm.


5.4

Boot Topping

coat of W J Leigh Co GRASSLINE Tin-free Type M396 Blackconventional anti-fouling spread at approximately 6.8m2 per litre toa wet film thickness of 147μm to produce a dry film thickness of50μm.

(b) Final Docking Before Acceptance


2 coats of Intersmooth BFA Series 9 anti-fouling spread atapproximately 4m2 per litre to a wet film thickness of 270μm toproduce a dry film thickness of 100μmper coat following a sequenceof BFA 096 Pink and 094 Plus allowing at least 16 hours betweencoats.

Boot Topping

2 coats of W J Leigh Co GRASSLINE Tin-free Type M396 Blackconventional anti-fouling spread at approximately 6.8m2 per litre toa wet film thickness of 147μm to produce to a dry film thickness of50μm per coat, allowing at least 16 hours between applications.

5.2 Preparation and Application

5.2.1 New Construction Ships

5.2.1.1 Before Launch

a. Prior to launch, the whole of the outer bottom is to be prepared as in Clauses3.1a.−3.1e., and then coated with 2 coats of the epoxy polyamide lacquer barriercoat, ref CDL 181/82. At least 16 hours, and not more than 72 hours is to beallowed between coats, followed in not more than 72 hours by overcoating withthe tie coat and anti-fouling coatings specified to be applied ‘Before Launch’ inone of the approved anti-fouling systems listed in Clause 5.1a.

5.2.1.2 Intermediate Dockings during Fitting Out

a. At intermediate dockings during fitting out the whole of the outer bottom is tobe cleaned of slime, salt deposits and other foreign matter by HP water jettingat a pressure of 207 bar (3000 psi). Oil contaminated surfaces are to be cleanedby washing with a 5% solution by volume of general purpose detergent to DGShips 305 in hot fresh water and scrubbing with soft bristle brushes inconjunction with the washing, to agitate the detergent film.

b. After washing and scrubbing the surface is to be allowed to stand for 10−15minutes before finally rinsing off with copious amounts of clean fresh water toremove all residues and then allowed to dry.

c. On no account is the outer bottom to be cleaned by scrubbing overall in lieu ofthe HP water jet cleaning specified.

d. When the cleaning has been satisfactorily completed, damaged areas of thecoating are to be made good by careful scraping back to sound surroundingfeathered edges, followed by lightly abrading the surfaces and then touching upwith the tie coat/anti-fouling coatings applied before launch. Areas exposing thebare GRP are to be coated with 2 coats of the epoxy polyamide lacquer barriercoat before being overcoated.


5.5

5.2.1.3 Final Docking Before Acceptance

a. During the final docking, the outer bottom is to be cleaned and damaged areasof the coatings repaired as in Clauses 5.2.1.2a.−5.2.1.2d. followed by applyingthe anti-fouling coatings listed under final docking in Clause 5.1a., inrelationship to the approved erodable anti-fouling system selected for use,before launch.

5.2.1.4 Underwater Fittings below the Deep Waterline, Propellers and Shafts (if fitted beforeLaunch)

a. Propellers and shafts fitted before launch are to be coated with 1 coat ofChocolate ACC 655 outer bottom protective paint to DEF 1441. If shafts are notto be subsequently cleaned of the ACC 655 coating, and then coated withAraldite, they are to be cleaned to bright metal at the docking before Sea Trials.

5.2.1.5 Shaft Brackets and GRP Rudders

a. Prior to painting, shaft brackets are to be cleaned and coated with 1 coat ofPretreatment (etching) prior to DEF STAN 80−15 and the GRP Ruddersprepared in accordance with Clauses 3.1a.−3.1e. Both the shaft brackets andrudders are then to be overcoated with the same tie and anti-fouling coatingsas applied to the remainder of the outer bottom below the boot topping.

5.2.1.6 Divers’ Search Lines and Draught Marks

a. When the final coat of anti-fouling has dried, divers search lines and draughtmarks are to be positioned. The search lines and draught marks on the outerbottom below the lower edge of the boot topping are to be painted inwith 2 coatsof Black erodable anti-fouling. On the boot topping the draught marks are tobe painted in with 2 coats of white anti-fouling AMTE−DL−2253 allowing atleast 8 hours between coats.

5.2.1.7 Hull Surface Roughness Measurements

a. After the final coat of anti-fouling has been applied to the outer bottom overallthe hull surface roughness is to be measured as set out in Clause 8.7d. andAnnex E.

5.2.1.8 Routine Dockings in Service

a. At routine dockings after entering service the whole of the outer bottom is tobe cleaned and damaged areas made good as stated in Clauses5.2.1.2a.−5.2.1.2d.inclusive.

b. The outer bottom is then to be recoated overall with a sufficient number of coatsof the erodable anti-fouling applied during build in order to compensate for pastwear in service to restore the thickness to that originally applied (including theunderwater fittings).

c. At present there is no satisfactory means of measuring the dry film thicknessof coatings applied to GRP surfaces. However, some erodable anti-foulingcolours change when immersed in sea water, and this factor will act as a guideto the extent to which the anti-fouling system has worn away (see Clauses5.2.1.8d.−5.2.1.8f.)

d. For instance, except for the SIGMAPLANE HB anti-fouling, the first coat of theremaining approved two-coat erodable anti-fouling systemswill leach to aLightGrey or White on exposure. Therefore, Light Grey or White showing throughthe top coat will denote that the top coat hasworn through and needs replacing.


5.6

e. The Grey and Red Brown anti-fouling coatings which make up theSIGMAPLANE system do not change in colour on exposure when immersed,therefore, Grey showing through the Red/Brown denotes that the Red/Browncoating needs replacing.

f. In the case of the outer bottoms of existing ships coated with the MessrsInternational Marine Paints Intersmooth BFA 9 series 3-coat erodableanti-fouling system, the first and third coats of BFA 094 Plum will leach to aLight Grey on immersion, and the intermediate BFA 096 Pink to White.Therefore White showing the top coat will indicate that the Plum coat needsreplacing, and Light Grey showing through the intermediate coat will indicatethat both the second and third coats need to be reapplied.

g. Divers’ search lines and draught marks are to be painted in as stated in Clause5.2.1.6a. and the hull surface roughness measured following the procedure inAnnex E.

5.2.1.9 Unprogrammed Dockings

a. There is normally no requirement to recoat the outer bottom overall witherodable anti-fouling during unprogrammed docking periods. However, theouter bottom is to be HP water jet cleaned overall at a pressure of 206 bar (3000psi) to remove all slime and other surface residues. Damaged or detached areasof the coating are then to be made good as specified for routine dockings, on anopportunity basis.

5.3 Vessels in Service at Present Coated with the TS 10240 161P Anti-Fouling System

5.3.1 Routine Dockings

a. Once the vessel has been docked the whole of the outer bottom is to be initiallycleaned of all slime, salt deposits and marine growth by HP water jetting at apressure of 206 bar (3000psi). Hard stubborn foulingmay be removed by carefulscraping. Oil-contaminated areas are to be cleaned as in Clause 6.2a. On noaccount is cleaning using naphtha to be resorted to.

b. After initial cleaning the top layer of the anti-fouling paint system will consistof a thin Green spent anti-fouling layer which is to be removed overall so as toexpose, and without damage to, the clean underlying unleached coating, inorder to afford a bond for the anti-fouling coatings subsequently applied.

c. The Green spent anti-fouling layer is to be removed using a high pressurewater/abrasive slurry selective cleaning method whereby fine copper slagnon-metallic abrasive of mesh size 0.15mm−0.7mm is entrained in the waterstream as a slurry whilst the high pressure water jetting is being carried out.

d. The selective removal is to be carried out at a pressure of 170 bar (2500 psi) to206 bar (3000 psi) using a high pressure water jet cleaning lance fitted with afan jet, held at approximately 300mm−450mm (12ins−18ins) from the surface,and operated in a continuous horizontal fluidmovement over the surface for thetime necessary to only remove the Green skeleton layer without disturbing thesound underlying anti-fouling coating.

e. This cleaning method is also to be adopted for the general preparation of theouter bottom with respect to the removal of loose and deteriorated coatings, soas to present a smoothly prepared surface on which to apply the freshanti-fouling coatings.

f. The time honoured scraping method does not satisfactorily prepare the surfaceoverall; in addition, scraping damages otherwise sound coatings and impairshull smoothness. For these reasons it is not to be used for overall surfacepreparation.


5.7

g. Damaged areas of the coating are to be carefully scraped back to soundfeathered paint edges, and abraded. Areas where the bare GRP has becomeexposed are to be touched up with 2 coats of the Blue epoxy polyamide lacquerBarrier coat Ref CDL 188/82 and 1 coat of theGreen General Service gloss painttie coat to DEF STAN 80−29 before overcoating. Likewise areas exposing theBarrier coat are to be touched up with the tie coat, before applying theanti-fouling.

h. When the damaged areas have been made good the outer bottom of vesselsplanned to dock at 3 yearly intervals are to be coated overall as follows:

2 coats of TS 10240 161P anti-fouling from the keel to the upper edge of the boottopping following a sequence of Red and Chocolate followed by:

1 coat of 161P anti-fouling from the keel to the lower edge of the boottopping

and

1 coat of TS 10239 317 Black anti-fouling to the boot topping.

Vessels docked more frequently are to be coated with one coat of anti-fouling foreach year out of dock, as appropriate to the boot topping and hull below.

i. The GRP rudders and shaft brackets are to be treated and overcoated as for theremainder of the outer bottom.

j. Each coat of the anti-fouling is to be spread at the rate of approximately 5m2per litre to produce a wet thickness of 150μmand a dry film thickness of 100μmper coat allowing 16−24 hours between applications. On no account is the finalcoat of anti-fouling to be applied less than 24 hours or more than 7 days beforethe vessel is undocked.

k. Divers search lines and draught marks are to be positioned, and painted in with2 coats of White anti-fouling AMTE DL 2253.

l. Hull surface roughness measurements are then to be taken over the outerbottom surface as specified in Clause 8.7d., after the final coat of anti-foulinghas been applied.

5.3.2 Unprogrammed Dockings

a. There is no requirement to apply fresh anti-fouling coatings overall duringunprogrammed dockings of less than 10 days duration. However, damagedareas are to be repaired as in Clause 5.3.1g. and then touched up with the fullanti-fouling system on an opportunity basis as time allows.

b. Where the docking period is likely to exceed 10 days the outer bottom is to betreated and coated as detailed for routine docking periods, except that 1 coat ofanti-fouling is to be applied for each year the vessel is to remain afloat beforethe next planned routine docking period.

5.3.3 Outer Bottoms Where the 161P Anti−Fouling Requires Complete Removal

a. When the existing anti-fouling coatings become excessively thick the coatingsare to be removed back to the Blue Barrier coating by employing the selectivecleaning method detailed in Clauses 5.3.1c.−5.3.1e.

b. Should exceptional circumstances prevent the use of the HP water/abrasiveslurry method of removal, then the coatings are to be removed using paintremover to DEF 1443 following all the instructions and procedures set out inNES 762. No attempt is to be made to remove the Barrier coating.


5.8

c. On no account are heat generating or other types of removal equipment ormethods to be used without the prior approval of Section NA 131.

d. When the existing anti-fouling coatings have been satisfactorily removed, theouter bottom is to be recoated with the tie coat and2 coats of anti-fouling quotedin one of the approved anti-fouling systems listed in Clause 5.1a., allowing atleast 16 hours between coats.

e. After the final coat of anti-fouling has been applied divers’ search lines anddraught marks are to be painted as in Clause 5.2.1.6a. and the hull surfaceroughness then measured as in Clause 8.7d.

5.4 General

5.4.1 Mixing and Application of the Coatings

a. All coatings specified for application to the outer bottom both during build andin service, are to be thoroughly mixed in accordance with the manufacturer’sinstructions and then applied by airless or air-assisted spraying in a smootheven manner, free from running, sagging, pinholing or dry spray.

b. Each coat is to be applied to the wet film thickness and within the overcoatingtime constraints specified.

c. When using spraying equipment a check is to be made to ensure that the paintspraying gun nozzles are fitted with the correct size of spray tip recommendedby the manufacturer for the paint material being applied.

d. When the erodable and the GRASSLINE Tin-free conventional typeanti-fouling are being applied the Health and Safety Code of Practice containedin Section 9. is to be strictly observed.

e. Once spraying commences, the spraying equipment isnot to be laid aside for anyreason, even for short periods without first thoroughly flushing through thefluid supply hose and spraying pistol to prevent coagulation of the paint withinthe equipment when at rest.

f. The equipment is to be thoroughly cleaned out at the ceasation of a workingshift where a continuous working shift pattern is not in operation.

g. In exceptional circumstances, when the spraying of the erodable anti-foulingcoatings is objected to, the coatings may be applied using flat paint brushes, orgood quality paint rollers, bearing in mind that several additional coats will berequired in order to produce the specified thickness.

h. Except in these circumstances, application by brushing is to be confined to thetouching-up of small damaged areas using flat paint brushes. Onno account aretar head type brushes to be used for the purpose.

i. On no account is the final coat of anti-fouling paint to be applied less than 24hours before the vessel enters the water.

j. When coating the outer bottom of new construction vessels before launch, areaswhichwill be subsequently covered by the launching cradle are to be coatedwiththe full paint system before becoming inaccessible. Before placing in positionthe faces of the launching cradle which will ultimately bear on the outer bottompainted surface are to be covered with a layer of plastic sheeting. The materialis to be firmly secured in place to prevent detachment which would pose the riskof obstructing sea tube openings etc when the vessel enters the water.


5.9

k. On each occasion of docking down, the positioning of the vessel on the dockblocks is to be so arranged as to allow for areas of the keel covered by the dockblocks at the previous docking to be accessible for coating at the currentdocking.

5.5 Special Items

5.5.1 Glass Reinforced Plastic Sonar Domes (when fitted)

a. Glass reinforced plastic sonar domes are to be prepared and painted in thefollowing manner:

5.5.1.1 New Domes

5.5.1.1.1 Surface Preparation

a. The surface of new GRP sonar domes is to be initially washed and then finallyprepared as set out in Clauses 3.1a.−3.1e. prior to the application of thespecified coatings.

5.5.1.1.2 Painting

a. When the surface preparation has been satisfactorily completed the domes areto be coated with:

2 coats of CDL 188/82 epoxy polyamide barrier coat allowing not less than16 hours or more than 72 hours between coats, and followed in not lessthan16 hours or more than 72 hours thereafter with the particular tie coat anderodable anti-fouling coatings, as applied to the outer bottom of the vesselto which the dome is fitted.

b. Instructions for the mixing and application of the CDL 188/82 barrier coat arecontained in Clauses 2.2a. and 2.2b.

5.5.1.2 Maintenance of the Coating in Service

a. During the vessel’s routine docking period, the domes are to be initially washedwith fresh water in order to remove all salt and other surface deposits. Areasfrom which the anti-fouling has become detached, are to be carefully scrapedback to soundly adhering surrounding feathered paint edges, and the affectedsurface then lightly abraded, and touched up with the tie coat, and 1 coat of theerodable anti-fouling originally applied to the outer bottom.

b. Finally the dome is to be recoated overall with at least 1 coat of the erodableanti-fouling in order to compensate for reduction in thickness due to past wearin service, 2 coats being applied if the underlying Black tie coat is showingthrough the existing anti-fouling coating.

c. Normally there should be no need to remove the anti-fouling coatings due to anexcessive build-up in thickness from progressive overcoating. The thickness ofthe coating being gradually reduced through wear in service.

d. However, should for any reason there be a need to remove the coatings, theremoval is to be carried out using paint remover to DEF 1443, and strictlyobserving the instructions contained in NES 762 with respect to the removal ofpaint from plastic surfaces. On no account are other paint removers to be usedfor the purpose without prior approval fromSection NA131,MOD(PE), Foxhill,Bath.


5.10

e. The CDL 188/82 epoxy polyamide barrier coat is somewhat resistant to theeffects of the paint remover, its purpose being to afford theGRP some protectionfrom its harmful effects whilst the anti-fouling coatings are being removedprovided that the paint remover is not allowed to remain on the surface forlonger than found necessary to soften the anti-fouling before removal. Anyattempt to remove the barrier coat after the anti-fouling has been removed willalmost certainly result in damage to the underlying GRP surface, and is not tobe undertaken.

f. TS 10240 161P anti-fouling coatings on sonar domes in service are to beremoved as above, and the domes then recoated with one of the approved tie coatand erodable anti-fouling systems listed in Clause 5.1a.


6.1

6. PAINTING OF WEATHERWORK (Exterior Hull above Boot Topping,Superstructure, Bulwarks, Mast, Funnel, Deck Equipment and Fittings includingthe Inside of Weatherdeck Access Doors and Vent Flap)

6.1 New Construction Before Launch

a. The exterior hull above the boot topping, together with superstructure and anyother areas or items defined as weatherwork, fitted during build are to beprepared in accordance with Clauses 3.1a.−3.2b. and painted in accordancewith Clauses 6.2a.−6.6d. before launch.

6.2 GRP Surfaces

a. 2 coats of Barrier coat CDL 188/82 to a wet film thickness of at least 50μm percoat.

and

1 coat of General Service Gloss to DEF STAN 80−29 tie coat to a wet filmthickness of at least 50μmallowing at least 16 hours but not more than 72hoursbetween each coat followed by:

1 coat ofWeatherwork Grey undercoating to TS 10266Colours BS 381C, No 637Medium Sea Grey to a wet film thickness of at least 75μm per coat.

and

1 coat of High Durability Weatherwork Finishing Paint to TS 10316, ColourBS 381C,No 676Weatherwork Grey, to a wet film thickness of at least 75μmpercoat allowing at least 16 hours between each coat.

6.3 Aluminium Alloy and Non-Ferrous Metal

a. To be prepared and pretreated as in Clause 3.5a. and then overcoated with3 coats of Yellow Zinc chromate primer to DEF STAN 80−77 followed by 1 coatof Weatherwork Grey undercoating and 1 coat of Weatherwork High Durabilityfinishing paint as above for GRP surfaces.

6.4 Wood Sheathing on Transom and Ship Sides

6.4.1 Faying Surfaces

a. coats of Aluminium Primer to DG Ships 1023.

6.4.2 Exposed Surfaces

a. 2 coats of Aluminium Primer to DG Ships 1023.

1 coat of Weatherwork Grey Undercoating to TS 10266.

1 coat of High Durability Weatherwork Grey finishing paint to TS 10316.

6.5 Mixing

a. The paints in the above systems are to be thoroughly mixed before applicationand frequently during use. The initial mixing of the Barrier coat, refCDL 188/82, is to be as stated in Clauses 2.2a. and 2.2b.

6.6 Application

a. The painting of theweatherwork structure is to be carried out as late as possiblein the build period before launch and the work so arranged to allow for all thecoating in the paint system to be applied in a continuous sequence, observingthe minimum and maximum overcoating times where specifically stated.


6.2

b. Each coat is to be applied by brush in a smooth even manner free from running,sagging, cissing, undue brushmarks and bittiness to thewet thickness specifiedfor the paint being used.

c. Frequent stirring of the High Durability finishing paint during applications isparticularly important since failure to do this, may result in areas of colourmismatch when the coating has dried.

d. Should certain circumstances prevent areas of structure from being coated withthe complete paint system as a continuous process then at least the Barrier coat,tie coat and weatherwork undercoating are to be applied, and the undercoatingsurface then washed and lightly abraded before applying the finishing paint ata later date before launch.

6.7 During Fitting Out

a. During fitting out the paint surfaces are to be maintained in a clean state byperiodically washing with a 2%−5% solution by volume of general purposedetergent to DG Ships 305 in warm fresh water, and then rinsed off with cleanfresh water in order to remove all salt deposits and other residues.

b. Damaged areas of the coating exposing the base GRP substrate are to berepaired by carefully scraping back to sound feathered paint edges, and thenlightly abrading the GRP and touching up with the full paint system so as toconform with the sound surrounding paint work. New structure and fittingsadded during the fitting out period are to be prepared and painted as for theperiod before launch.

6.8 Prior to Acceptance

a. Prior to the acceptance of the vessel into service the weatherwork is to bewashed overall as in Clause 6.7a., and the painted surface lightly abraded inconjunction with the washing process, using BS 871 Grade 320 silicon carbidewaterproof abrasive paper, followed by the application of 1 coat of theweatherwork undercoating and 2 coats of the weatherwork finishing paint,unless relaxations in the overall Grey livery is authorized by the AcceptanceAuthority.

6.9 Ship’s Identification Markings

a. After completion of the painting work the ships identification markings (visualcall signs) are to be painted on the ship sides and transom with 2 coats of BlackGeneral Service Gloss paint to DEF STAN 80−54. The positioning anddimensions or the markings are to be in accordance with the instructionscontained in DEF STAN 19−2 for the class of vessel.

6.10 Maintenance in Service

a. The maintenance of the weatherwork paint system in service is to be confinedto periodic washing in accordance with Clause 6.7a. to restore the cosmeticappearance, and the repair and touching up of damaged areas. On no accountis overpainting to be resorted to in lieu of washing to restore cosmeticappearance as a matter of course.

b. In any event, repainting overall is not to be carried out without the approval ofC-in-C Fleet, Portsmouth.


6.3

6.11 Removal and Renewal of the Paint System

6.11.1 GRP Surfaces

a. When removal of the paint system becomes necessary, the aged or deterioratedcoatings are to be removed back to the blue barrier coat using paint remover toDEF 1443 and following all the instructions contained inNES 762 including thefinal washing of the surfaces after the paint coatings have been removed.

b. The remaining Barrier coating is then to be lightly abraded and overcoated withthe General Service Gloss tie coat, and 1 coat of the weatherwork undercoatingand2 coats of the finishing paint observing thewet film thickness andminimumovercoating time per coat and following the procedure set out for applicationduring the building period before launch.

6.11.2 Aluminium Alloy Metal and Wood

a. Removal of the paint coating is to be carried out using paint remover to DEFSTAN 80−14 following the instructions contained in Section 5 of NES 762. Onno account are the coatings to be removed from the aluminium alloy usingpneumatic descaling machines or steel scrapers.

b. After the coatings have been removed the aluminium alloy surfaces are to beetched with 1 coat of pretreatment primer to DEF STAN 80−15 followed by 3coats of Yellow Zinc Chromate primer to DEF STAN 80−77 before applying 1coat of the weatherwork undercoating and 2 coats of High DurabilityWeatherwork finishing paint. Wood surfaces are to be primed with 2 coats ofaluminium primer to DG Ships 1023 before being coated with the weatherworkundercoating and finishing paint system.


6.4


7.1

7. PAINTINGOFWEATHERDECKS (exAreasCoveredwith TrawlerdeckMaterial)

7.1 Preparation of Surfaces

a. After the GRP surfaces have been prepared in accordance with Clauses3.1a.−3.1d. they are to be coated with two coats of Barrier coat CDL 188/82followed by one of the undermentioned approved non-slip paint systems. Thecolour of the finishing coats is to be to BS 381C, No 632, Grey.

(1) Camrex Ltd

CAMIDECK ADM 201E−2925 primerCAMIDECK ADM non-slip composition 521E−0226

(2) American Abrasive Metals Co

PRI−POXO 3c metal primerEPOXO 300c non-slip deck coating

(3) W J Leigh Co Ltd

EPIGRIP H 795 primerEPIGRIP M 377 non-slip deck paint

No alternative paint systems to those listed above are to be used without priorapproval from the Design Authority.

b. The American AbrasivesMetal CoPRI−POXO3c primer has a flash point below32°C therefore all the precautions associated with the application of highlyflammable materials are to be observed.

7.2 Mixing

a. All the coatings listed above are supplied as two components consisting of baseand curing agent, in separate containers. The base container is sufficiently largeto allow for all the curing agent to be added to the base in the prescribed volumeratios.

b. Each component is to be thoroughly stirred separately for 5minutes afterwhichtime the curing agent is to be added to the base, and the whole mixed usingmechanical stirrers, until an homogenous mix is obtained. After mixing thematerial is to be allowed to stand for 10 minutes before use.

c. The aggregate in the non-slip coatings will fall out of suspension with the resinmedium and settle in the bottom of the container during storage or if the mixedmaterial is left undisturbed for any length of time during application.

d. In view of this, particular attention is to be paid to ensuring that the aggregateswhich have settled are thoroughly stirred into suspension during mixing, andthat the mixed material is frequently stirred during applications.

e. The pot life (the time thematerials will remain usable after mixing) is normally8 hours in an ambient temperature of 10° C after which time the material is tobe discarded and new material freshly mixed. In any event, on no account ismaterial mixed on one day to be carried over and used on the next.


7.2

7.3 Application

a. As soon as a deck area has been satisfactorily prepared it is to be overcoated withone of the approved non-slip paint systems comprising:

2 coats of Barrier coat CDL 188/82 followed by:

1 coat of primer to a wet film thickness of 80−100μmto produce a dry filmthickness of 35μm followed in not less than 24 hours or more than 5 daysby,

2 coats of non-slip deck composition spread over at the rate ofapproximately 2.5m2per litre to produce a dry film thickness of 250μmpercoat and allowing at least 24 hours between coats.

b. On no account are more than 5 days to be allowed to lapse between theapplication of the primer and the first coat of the non-slip composition. Shouldhowever, the application of the non-slip composition be delayed for more than24 hours after the priming coat has been applied then the primed surfaces areto be protected from contamination until the non-slip coating is applied withinthe 5 day maximum overcoating period.

c. All the coatings of the paint systems approved for use are formulated forapplication by spraying, and this is to be the standard method employed, withthe paint manufacturer’s advice being sought regarding the equipment to beused.

d. However, where circumstances prevent the use of spraying equipment, thecoatings may be applied using suitable quality flat paint brushes, bearing inmind that several extra coats may be required to produce the specified dry filmthickness.

e. The coatings are to be applied in an even manner, free from pinholing and dryspray, to the film thickness specified and within the overcoating timeconstraints in Clauses 7.3a. and 7.3b.

f. There is at present no satisfactory method for measuring the dry film thicknessof coatings applied to a GRP surface. Therefore the wet film thickness of theprimer is to be measured frequently during application to ensure that the totaldry film thickness of the coating meets that required.

g. Likewise there is no satisfactory means of measuring the wet film thickness ofthe non-slip coating due to the surface peak to trough profile, the thicknessbeing influenced by the quantity of material spread over each square metre ofsurface. To ensure that the total dry film thickness of the non-slip coatingapplied is that specified, attention is to be paid in ensuring that each coat isspread at the approximate rate per square metre stated in Clause 7.3a.

h. On no account are single thicker coats to be applied with a view to reducing thenumber of coats required to produce the total dry film thickness.

i. When applying the non-slip coatings particular attention is to be paid inensuring that the material is frequently stirred during use and that the finishedcoating has a uniform texture with evenly distributed closely knit aggregateparticles.

j. The work of coating the weatherdeck is to be carried out as a complete sequenceas late as possible in the building and refit period. In any event after becominghard dry (viz at least 48 hours after application), the non-slip coatings are to beprotected from damage until the completion of the period by covering withsuitable fire retardant hardboard sheets sealed at the butts and edges.


7.3

7.4 Helicopter Drop Zone (Canopy Deck)

a. After the non-slip paint system has been applied, the helicopter drop zone is tobe marked in with 2 coats of one of the non-slip compositions listed in Clause8.1a. inwhite. Positions and dimensions of themarking to be in accordance withthe instructions shown on the appropriate drawing for the class of vessel.

7.5 Maintenance in Service

a. Maintenance of the non-slip coatings in Service is to be confined to frequentoverall washing as in Clause 6.9a. to maintain cosmetic appearance, and therepair of damaged areas. The repairs being carried out by carefully scraping thecoatings back to sound surrounding feathered edges, followed by touching upwith the full paint system.

b. Recoating overall is only to be carried out when the non-slip properties of thecoating have been reduced through wear, or when frequent washing no longerrestores the cosmetic appearance. On no account is overall recoating to beresorted to in lieu of frequent washing to restore cosmetic appearance as amatter of course.

7.6 Weatherdecks at Present Coated with Improved Suede Non-Slip Coatings

a. Decks of vessels in service at present coated with the now superseded improvedsuede non-slip paint are to be overcoated with 1 coat of one of the approvednon-slip compositions listed in Clause 7.1a. The primer of the non-slip paintsystem is not required where the existing coatings are sound.

b. Overall overcoating with the newmaterial may be carried out after washing andthen lightly abrading with silicone carbide abrasive paper used wet to providea key.

c. Damaged areas of the suede coating are to be repaired by scraping back to soundfeathered paint edges and touching up with 1 coat of primer from the samemanufacturer as the non-slip composition, before recoating overall.


7.4


8.1

8. QUALITY ASSURANCE AND INSPECTION

8.1 General

a. The Contractor is to satisfy himself that all the paintmaterials intended for useare as specified and approved, and in a usable condition, and that the surfacepreparation and application equipment is serviceable, efficient, and safe in use.

b. Contractors are to certify that operators to be engaged on the work have beenproperly trained in the use of the surface preparation and paint applicationequipment, and are fully conversant with all the requirements.

8.2 Surface Preparation

a. Before any specified surface preparation and painting work is carried out, thesurface is to be initially cleaned of all contamination, using the methods quotedin Section 3. of this Standard. Suitable arrangements are to be provided to allowfree access to all the surfaces without encumbrance to workmen operatingsurface preparation and paint application equipment.

b. Outer bottom areas not subject to normal daylight working conditions are to beadequately illuminated using suitable flameproof and waterproof lighting of atleast 55 lux power during the whole course of the surface preparation,application and Quality Assurance Inspection work.

c. During the whole operation of surface preparation and painting, each stage isto be inspected to ensure that the required standards are being achieved andanydeficiencies rectified before the next stage is commenced. All the relevant detailsare to be recorded and documented for future reference.

8.3 Paint Mixing

a. All the paints specified for use are to be mixed strictly in accordance with therelevant instructions, contained inNES 756with respect to coal tar epoxy paintto DEF STAN 80−112 and to the manufacturer’s instructions for theproprietary paints used, employing mechanical paint agitation aids.

b. The pot life, the time theDEFSTAN80−112 coal tar epoxy paint and other two-component materials remain usable in the pot after mixing, is normally 8 hoursat 10° C−15° C after which time any remaining unused material is to bediscarded and a fresh quantity mixed. On no account is material mixed on oneday to be carried over and used on the next.

8.4 Application

a. All the coatings are to be applied by spraying, in an even manner free fromrunning, sagging, pinholing, dry spray and any other imperfections, coveringthe structure overall to the specified thickness, and paying particular attentionto minimum and maximum overcoating times.

b. When using spraying equipment a check is to be made to ensure that the paintspraying gun nozzles are fitted with the correct size of spray tip recommendedby the paint manufacturer in the relationship to the paint material beingapplied and heaters incorporated in the equipment if recommended by the paintmanufacturer.

c. Once spraying commences, the spraying equipment isnot to be laid aside for anyreason even for a short period of time, without first thoroughly flushing throughthe fluid supply hose and spraying pistol to avoid paint coagulation when theequipment is at rest. All the equipment is to be thoroughly cleaned out at theceasation of a working shift where a continuous shift working pattern is not inoperation.


8.2

d. The surfaces to be coated are to be clean and dry. When preparing and paintingouter bottoms water is not to be discharged over the ship’s side, or from suchas galley drains etc during docking periods whilst the work is being carried out.Where such drainage is necessary, the drain openings in the hull are to be fittedwith hoses, and the effluent discharged directly into the dock-culverts.

8.5 Environmental Conditions

a. Application of the coatings is not to be carried out when the ambienttemperature is less than 5° C, the relative humidity is greater than 80% or thesurface temperature is less than 3° C above the dewpoint. Relative humidity,ambient temperature and steel temperature readings are to be taken at the startof, midway, and at the end of each working shift, and the details recorded anddocumented. The records are to be attached to the Report of Docking.

b. Where the work is of necessity required to be carried out in open docks inadverse weather conditions, suitable weatherproof covers are to be erected toscreen the work face from the elements, and flameproof dehumidifier heatersprovided within the covered area in order to create and maintain theenvironmental conditions specified in Clause 8.5a.

8.6 Measurement of Wet Film Thickness

a. The stipulated wet film thickness of paint coatings is to be frequently measuredduring the application of each coat, as a guide to ensuring that the required dryfilm thickness of the paint system will be achieved by the number of coatsspecified to be applied.

b. Guidance instructions regarding the use of the comb type wet film thicknessgauge are contained in Annex D.

8.7 Hull Surface Roughness Measurement

a. After the final coat of erodable anti-fouling has been applied to the outerbottoms overall, both during the building period and at routine andunprogrammed dockings in service thereafter the degree of hull surfaceroughness is to be measured using the BMT (BSRA) hull surface roughnessanalyser Mk II, calibrated and operated in accordance with the manufacturer’sinstructions.

b. The measurements are to be taken at about 100 locations evenly distributedaround the underwater surface, and a map showing the location of areas overwhich the measurements are to be taken together with the procedure andinstructions to be followed is placed at Annex E.

c. AnnexG. contains guidance instructions for the completion of FormS283/D495,Report of Docking, in which is to be recorded all the relevant details of surfacepreparation and coatings applied to outer bottoms during the building periodand on each occasion the ship is docked during its life thereafter.

d. The details required include the condition of the coatings on docking down,method of surface preparation and application, dry film thickness,environmental conditions, and degree of hull surface roughness.

e. A special report is also to be made in Section VII of the Report of Dockings ofcircumstances which prevented all the work from being carried out to thespecified requirements, or if trial coatings were applied.


9.1

9. RECOMMENDED HEALTH AND HYGIENE PRECAUTIONS WHENAPPLYING OR REMOVING ERODABLE AND GRASSLINE TIN-FREEANTI-FOULINGS—TOBEREAD INCONJUNCTIONWITHLOCALORDERSAND STANDING INSTRUCTIONS

9.1 General

a. The following precautions are recommended for situations where notmore than4 spray operators simultaneously apply paint by approved spray equipment ata rate of approximately 1 litre of paint per minute per operator.

b. Approved practices are to be followed for the application of the primer and CTEcoatings. Spray application of EAF paints is acceptable provided safe workingpractices are followed.

c. Occupational health and safety services should be consulted at an early stageduring the planning of all working involving application of removal of EAFcoatings.

9.2 Precaution of Exposure

a. The paint materials are irritant, toxic, can pass through the skin and must notbe inhaled. Skin and eye contact and ingestion of the paint spray must beavoided. Inhalation of excessive amounts of vapour of spray (ie above exposurelimits, and all unnecessary exposures) must also be avoided. A serious hazardis presented by possible injection of paint under the skin and this must beavoided.

b. The paint thinners are irritant and harmful both by skin absorption, eyecontact, ingestion and by inhalation. Such exposures must be avoided.

c. Smoking, eating and drinking in any areas where there is risk of exposure is tobe avoided.

9.3 Hygiene and Amenities

a. All personnel are to pay scrupulous attention to personal washing, takingparticular care of hands, wrists, neck, hair, mouth and any other body areaswhich have been exposed to overspray. Changing accommodation will berequired for spray operators, spray attendants and adjacent support workers.Separate storage for clean and dirty clothing is essential. Showering andwashing facilities are to be available, with hot and cold running water, soap andcleanser gel (0442/220 4241), nail brushes and towels provided. Facilities foremergency washing are to be available in the work area, to include buckets ofclean water, soap, hand cleanser gel, an eye wash facility and (under cover)towels and nail brushes, and are to be immediately accessible by personnel, butlocated where contamination by overspray or other materials is not likely.

9.4 Issue, Cleaning and Laundering of Protective Clothing and Equipment

a. Clean protective clothing and equipment is to be issued to personnel as requiredat the beginning of each shift.

b. Any previous protection clothing which becomes visibly contaminated is to beremoved and theunderlying skinwashed thoroughly with soap andwater. Cleanclothing is to be available. Heavily contaminated clothing is to be disposed ofwith other erodable anti-fouling waste.

c. Used clothing which is not visibly contaminated may be laundered with otherindustrial clothing (eg overalls) but is not to be laundered with underclothingor with domestic items (eg towels, linen etc).


9.2

9.5 Health Surveillance

a. Persons with respiratory complaints or allergic conditions are not to be involvedin this work.

b. Open wounds must not come into contact with paint, overspray or solvents.Persons with such wounds are not to be employed in this work.

c. If during or following work any individual suspects paint has been injectedunder the skin, individuals are to seek the immediate attention of a medicalofficer.

d. Wherever skin irritation or a rash develops medical attention is to be sought.

e. Any enquiries concerning health surveillance are to be addressed to localmedical officers.

9.6 First Aid

a. Eye Contact Flush with copious amounts of water for 10minutes, usingwater from sealed eye wash bottles,discarding the residue after use. Seek medicalattention.

b. Skin Contact Remove and change contaminated clothing.Wash affected area thoroughly with soap/cleansergel and water.

personnel suffering irritation to the skin are toreport to the Medical Centre.

c. Inhalation Remove to fresh air. Loosen collar. Do not walkabout. Seek medical attention.

d. Ingestion Seek medical attention immediately.

e. Pressure injection Seek the immediate attention of amedical officer.

9.7 Storage and Use

a. The materials must be stored and used in accordance with the HighlyFlammable Liquids andLiquefied Petroleum Gases Regulations 1972, andDOEPublication, Shipyards and the Marine Environment, Guidelines for Applyingand Removing Anti-fouling Paint.

b. Manufacturer’s labelled containers must at all times be used for the storage ofpaints and solvents; when not in use containers must be kept firmly closed.

c. Manufacturer’s mixing instruction are to be strictly observed.

d. Used wiping materials, waste paint, empty cans and other contaminatedmaterials are to be collected together into a designated skip or other containerand disposed of in accordance with the Control of Pollution Act 1974.

9.8 Ship’s Openings, Ventilation Systems etc

a. The following precautions may need to be applied:

If any crew members or dockyard personnel are present on board a ship whichis being sprayed, precautions may be necessary to ensure that significantconcentrations of vapour and overspray are not drawn into the ship’satmosphere. Ventilation and other openings must therefore be closed orprovided with suitable filters if spraying is to take place in close proximity.Screens or canopies may be necessary in the case of other openings, (eg quarterdeck openings).


9.3

9.9 Warning Notices

a. Suitable warning notices are to be displayed at points to any area whereerodable anti-fouling removal or application is taking place.

9.10 Precautions where Spraying in an Open Graving Dock

a. During the spraying operation access to the area close to spraying must berestricted to those involved in the spraying operation and their supervisors andQA representatives. The restricted area will normally be confined to the dockbottom and within 3 metres of the dock edge to cater for possible plume affect.

b. The assessment is to include the use of smoke tests and consider data on winddirection and velocity. Where plume transport is considered likely an areaextending up to 40 metres downwind from the spray gun/s should be regardedas an area in which exposure to overspray could occur. The area would extendover parts of the dockside and adjacent areas under some conditions.Unprotected personnel should not linger in such an area and where occupiedbuildings are affected the windows and doors on the windward side of thebuilding should remain closed.

The situations should be reassessed each shift andmore frequently if conditionsare expected to change. Alternative brows should be available for use asappropriate. The storage, handling or consumption of food, drink and smokingmaterials are not to be permitted in any areas where there is a risk of exposureto erodable anti-fouling materials.

9.11 Guidance on Personal Protection Requirements when Spraying takes place in anOpen Graving Dock

9.11.1 Spray Operator and Attendants:

a. Full face air supplied respirator with hood, coveralls, gloves, boots, issuedunderclothing.

9.11.2 Personnel Alongside or Underneath Sprayer—as for Clause 9.11.1a.

a. Alternatively a filter type respirator may beworn for very short periods seeNoteafter Clause 9.11.2h. but adequate eye and face protection must also beprovided. Filter lifetimes however may be very short. Advice must be obtainedfrom local occupational health services if filter type respirators are to be used.

b. Other personnel in dock bottom within 25 metres of spraying or in or nearplume:

Cartridge respirator fitted with twinFC6 cartridges; eye protection; hood,coveralls; gloves; boots.

Issue underclothing is not required.

c. Personnel in dock bottom more than 25 metres from operators and well awayfrom plume:

Coveralls

boots.

d. Personnel on ship’s weatherdecks involved in the application of anti-foulingcontaining organotin:


9.4

Coveralls; FC6 respirator may be required depending on circumstances.

Local occupational health services to advise.

e. Personnel in dock galleries.

As Clause 9.11.2d.

f. Personnel in crane cabs

Normal dockyard overalls.

g. Personnel inside ship

Depends on circumstances. Seek advice from local occupational healthservices.

h. Personnel in dockside buildings.

Note: It is essential that personnel wearing filter type respirators are cleanshaven. Stubble or beard growth may seriously reduce the protectionprovided by all negative pressure respirators and may affect the level ofprotection provided by other types.

9.12 Precautions in an Enclosed Environment with Multiple Graving Docks

a. During the spraying operation access to the dock affected and immediatelyadjacent subways are to be restricted to essential personnel.

b. There is no evidence to suggest that general access to other areas of an enclosedgraving dock complex including the dockside, needs to be restricted.

c. Guidance on personal protection requirements when spraying in an enclosedmultiple graving dock environment:

(1) Spray operator and attendants:

In accordance with Clause 9.11.1a.

(2) Personnel alongside or underneath sprayer:

In accordance with Clause 9.11.2a. to 9.11.2h.

(3) All other personnel in dock bottom:

Cartridge respirator fitted with two FC6 cartridges; eye protection;hood; overalls; gloves; boots.

d. Issue underclothing should not normally be required, but is to be worn bypersonnel who expect to approach close to the spraying operation or to spendlong periods working in the dock bottom while spraying is in progress.

9.13 Precautions during Spraying in an Enclosed Environment without Graving Docks

a. Personnel protection requirements during spraying for operators and adjacentworkers will be similar to those for workers in dock bottoms.

b. There will be a requirement to control the spread of overspray, and to adoptdust-free methods for removal of any dust deposits remaining when sprayinghas been completed.

c. A code of safe working practice is to be prepared by management with theassistance of local occupational health and safety services prior to allapplications in such an enclosed environment.


9.5

9.14 Precautions to be followed after Application of Erodable Anti-Fouling

9.14.1 Cleaning of Dock

a. Dried overspray particulate is to be removed from the dock bottom by dust freemethods taking care to limit the transfer of anti-fouling toxins to the aquaticenvironment.

9.14.2 Cleaning of Equipment

a. During cleaning of equipment etc avoid inhalation of vapours and skin contactwith solvents.

9.14.3 Hazard from Painted Surfaces

a. A small risk associated with skin contact may persist during the life of an activeerodable anti-fouling coating. It is unlikely that transient skin contact with thedried coating will be harmful but prolonged direct skin contact is to be avoidedby the use of gloves.

9.14.4 Work on Painted Surfaces

a. The use of heat on a coated surface or item is not to be permitted.

Removal of an active coating in a dry state is to be avoided.

Wear gloves and eye protection.

b. Where any welding or burning is necessary the paint coating is to be firstremoved 60mm either side of the proposed run and is to extend at least 60mmbeyond the end of the run. Remove either using a paint remover or by a wetblasting methods. If a paint remover is used, skin/eye contact and inhalation isto be avoided.

c. Power abrasive discs must only be used if fitted with an effective low volumehigh velocity extraction system. The use of a cartridge dust respirator is alsoadvised.

9.15 Precautions to be followed during Removal of Erodable Anti-Fouling Coating

a. The removal of ‘old’ erodable anti-fouling coatings is to be undertaken withcare. It may be necessary to apply control measures to prevent absorption oforganotin by inhalation and by skin contact.

b. Any remaining erodable anti-fouling can be assumed to be active and to containorganotin and other toxins, eg copper. In the case of GRASSLINE Tin-free, itis recommended that at least 10 samples of the coating be collected fromrepresentative sections of the outer bottom as follows: by hand scraping to baremetal, all p aint is to b e removed over 30cm ¢ 30cm area. Th e samp l es are t o b eforwarded to a laboratory which is to be asked to report the total percentage byweight of tin, copper and lead in the samples supplied. The results are to beforwarded to the occupational health service.

c. When the analyses of the coating are available the occupational health servicewill advise as to whether any special precautions are required in addition tonormal practices of dust control.

d. Normal practices of dust control are to include:

(1) scheduling the work to minimize potential for exposure of personnel;


9.6

(2) removal of non-essential equipment and materials from the dock bottomprior to commencement of work;

(3) the use of wet methods of removal to suppress dust generation;

(4) appropriate protection for abrasive blasting operators and supportworkers;

(5) thorough cleaning on completion using dust free methods;

(6) collection and disposal of arisings in a wet state;

(7) the provision of adequate washing facilities for personnel.

e. Special precautions which may be required if the coating to be removed issufficiently active might include (occupational health service to advise):

(1) restriction on entry to drydock or the surrounding area;

(2) respiratory protection and other protective clothing for personnelentering drydock prior to completion of cleaning;

(3) special arrangements for disposal of waste;

(4) special washing and showering facilities for personnel.

f. The instructions contained in the Department of the Environments document‘Guidelines for Applying and Removing Anti-Fouling Paint’ are to be observed.Additional precautions may be required to be taken tomeet local requirements.


10.1

10. COMPARTMENTS AND ITEMS NOT TO BE PAINTED

a. The following compartments and items are NOT to be painted.

Abrasive tread stripAnodized guard rails and stanchions

BallastBow thruster unitsBright metal canopies and linings

Chain cableChain lockerCold and Cool Rooms

Drain lockerDirty lub oil tanksDiesel oil fuel tanks

EM log compartmentExposed threads, glands and springsElectric cables

Fore peakFreshly laid up laminate or recently filled areasFloor plates

Generator Room VentGratings in machinery compartmentsGrease nipplesGRP structure behind insulationGRP structure beneath false deckGRP structure in refrigerated spacesGRP perforated sheetGRP structure beneath wood sheathingGRP structure below 600 mm datum in machinery spaces

Handrails in machinery spaces

Ladders in oil fuel tanksLubrication fittings, and lubricated jointsLub oil tanks

Mast lockerMast structures, internallyMPH linings and partitions

Plastic piping, excepting for identificationPreventer chain clipsPropellers and shafts, except if fitted before launching when they are to becoated as given in Clause 5.2.1.4a.Plated fittings

Salvage generator casingShock mountingsStainless steel laddersSlips and bottle screws of wireworkSpray system roses and perforated pipesSonar trunk compartmentSullage drain tank


10.2

Tumbler boltsTrawler deck coveringsTally plates

Underside of pigmented GRP bunks

Valves and associated fittingsVoice pipesVarnished woodworkVent spaces and vent lockers

Watertight compartmentsWooden spare battens in stores and magazines


A.1 ANNEX A.

ANNEX A.

RELATED DOCUMENTS

A.1 Reference is made to:

Referred to inClause

BS 381C Colours for identification, coding andspecial purposes

2.1a., 4.19.1a.,4.19.2a., 6.2a.,7.1a.

BS 871 Abrasive papers and cloths 2.1a., 3.1d., 6.8a.TABLE 2.1

BS 4800 Paint colours for building purposes 2.1a., 4.5b.,4.6a., 4.18.1a.

DEF STAN 19−2 Ship and marine craft visualidentification markings

6.8a.

DEF STAN 80−14 Paint remover, dichloromethane, waterrinsable; Type: Brushing

2.1a., 3.5a.,6.11.2a.TABLE 2.1

DEF STAN 80−15 Paint, pretreatment priming (etchingprimer) Types: Brushing (base and acidcomponent for brushing paint), spraying(base and acid component for sprayingpaint)

2.1a., 4.10.1.4a.,4.18.1a.,4.18.5a.,4.19.1a.,4.19.2a.,5.2.1.5a.,6.11.2b.,TABLE 2.1

DEF STAN 80−29 Paint, finishing, general service gloss, formarine use. Type: Brushing

2.1a., 5.3.1g.,6.2a. TABLE 2.1

DEF STAN 80−54 Paint, finishing, general service glossTypes: Brushing and spraying

2.1a., 4.18.4a.,4.18.5a.,4.19.2a., 6.8a.,TABLE 2.1

DEF STAN 80−72 Paint system chlorinated rubber paint,priming, chlorinated rubber, paintfinishing chlorinated rubber. Types:Brushing, spraying

2.1a., 4.11.1a.,4.12a., 4.13a.,TABLE 2.1

DEF STAN 80−77 Paint, priming, zinc chrome, fireretardant. Type: Brushing

2.1a., 4.10.1.4a.,4.18.5a.,4.19.1a.,4.19.2a., 6.3a.,6.11.2b.,TABLE 2.1

DEF STAN 80−78 Paint, finishing, fire retardant, white andtinted white. Type: Brushing

2.1a., 2.4a.,4.2a.,4.4a.−4.5b.,4.10.1.1a.−4.10.1.4a.,4.19.1a.,TABLE 2.1


A.2ANNEX A.

DEF STAN80−112

Paint system coal tar epoxy, two pack 4.15a., 8.3a.,8.3b.,TABLE 2.1

DEF STAN80−125

Paint finishing, emulsion for canvasType: Brushing

2.1a., 4.16.1a.

DEF 1059A Stoving paint system for instruments 4.18.1a.

DEF 1441 Paint, underwater protection for steel(Anti-corrosive No 655)

2.1a., 5.2.1.4a.,TABLE 2.1

DEF 1443 Paint remover, trichloroethylene basedwater rinsable

1.c., 2.1a., 3.4a.,5.3.3b.,5.5.1.2d.,6.11.1a.,TABLE 2.1

TS 10239 Paint anti-fouling Black (317) 2.1a., 5.3.1h.,TABLE 2.1

TS 10240 Paint anti-fouling 161P 2.1a., 5.3.1h.,5.5.1.2f.,TABLE 2.1

TS 10266 Paint system for ships’ weatherwork. 2.1a., 6.2a.,6.4.2a.,TABLE 2.1

TS 10316 Paint system for ship weatherwork. Highdurability. Light weatherwork greyType: Brushing

2.1a., 6.2a.,6.4.2a.TABLE 2.1

NES 507 Requirements for Materials and Finishesfor Electrotechnical Equipment

4.18.3a.

NES 756 Application of Coal Tar Epoxy Paints 4.15a., 8.3a.

NES 759 Use of Pretreatment Primer 2.1a., 3.5a.

NES 762 Use of Brushing Type Paint Removers 1.a., 1.c., 2.1a.,3.4a., 3.5a.,5.5.1.2d.,6.11.1a., 6.11.2a.

DG SHIPS 305 Detergent (Built) Liquid, GeneralPurpose Cleaning. For use in HM Ships

2.1a., 3.1b.,3.2b., 3.3a.,5.2.1.2a., 6.7a.,7.3j., TABLE 2.1

DG SHIPS 1023 Paint, Aluminium, for Steel and WoodType: Brushing

2.1a., 4.8a.,6.4.1a., 6.4.2a.,6.11.2b.,TABLE 2.1

DG SHIPS 1035 Paint, Finishing for Interior Decks andDados. Type: Brushing

2.1a., 4.7a.,TABLE 2.1

BR 820 Provisiong of Safe Potable Water forShips and Establishments

4.14a.

BR 1245 Catalogue of Main Marine FoulingOrganisms

Annex G.

FORM S238/D495 Report of Docking/Slipping/Launch 5.2.1.7a., 8.7c.,Annex E.,Annex G.


A.3 ANNEX A.

FORM S1188 Colours and Markings for Piping,Ventilation, Manholes, Gearing

4.18.4a.

DOE ‘Guidelines for Applying and RemovingAnti-fouling Paint’

9.7a.

Highly Flammable Liquids and LiquefiedPetroleum Gases Regulations 1972

9.7a.

Control of Pollution Act 1974 9.7d.


A.4ANNEX A.


B.1 ANNEX B.

ANNEX B.

DEFINITIONS AND ABBREVIATIONS

B.1 There are no Definitions and Abbreviations for this NES.


B.2ANNEX B.


C.1 ANNEX C.

ANNEX C.

TABLE FOR CALCULATING MINIMUM AND MAXIMUM OVERCOATING TIMES

C.1 The following table has been compiled for the purpose of calculating minimum andmaximum overcoating times in an ambient temperature either above or below thatspecified in this NES or against minimum and maximum overcoating times whichappear on Product Data Sheets for the material being used.

TEMPERATUREDIFFERENCE MULTIPLYING FACTOR

12 0.4

Ambientt t

10 0.5temperatureabove that

6 0.7above thatspecified ° C 4 0.8p

2 0.9

Specified ambienttemperature ° C 0 1.0

2 1.2

4 1.3

Ambient6 1.5

Ambienttemperature 8 1.7temperaturebelow thatspecified ° C

10 2 0specified ° C

12 2.3

14 2.6

16 3.0

Example A

Specified ambient temperature 10° C minimum overcoating time 24 hoursmaximum overcoating time 7 days

Application ambient temperature 6° C (4° C below)

To calculate minimum and maximum overcoating times at 6° C, the timeshown against 10° C must be multiplied by 1.3

Minimum = 24 hours ¢ 1.3 = 31 hoursMaximum = 7 days ¢ 1.3 = 9 days in round figures.

For a temperature of 16° C (6° C above) the times shown for 10° C must bemultiplied by 0.7.

Example B

Specified ambient temperature 20° C minimum overcoating time 8 hoursmaximum overcoating time 5 days

Application ambient temperature 14° C (6° C below)

Minimum overcoating time 8 hours ¢ 1.5 = 12 hoursMaximum overcoating = 5 days ¢ 1.5 = 8 days


C.2ANNEX C.


D.1 ANNEX D.

ANNEX D.

MEASUREMENT OF WET PAINT FILM THICKNESSES

Wet Film Thickness Gauge or Comb

Description

D.1 The wet film thickness gauge is most commonly used is a simple comblike, graduateddepth measuring tool. It is usually quite small, about 75mm¢ 35mm¢ 2mm thick,and has serrations across each measuring end. Of these serrations, the first and lasttooth are of equal lengths to form the base line, and the intermediate teeth are ofgraduated lengths. FIGURE D.1 below is a diagrammatic representation of a typicalmeasuring gauge.

Methods of Use

D.2 The gauge is placed end on and at right angles, on a level area of wet painted surface.The wet paint will adhere to the end teeth and also the longer teeth in or touching thewet paint. The gauge is removed and the wet film thickness judged to be that givenbetween the last wetted tooth and the next dry tooth.

FIGURE D.1 DIAGRAMMATICAL REPRESENTATION OF ATYPICAL MEASURING SCALE


D.2ANNEX D.


E.1 ANNEX E.

ANNEX E.

PROCEDURE AND GUIDANCE INSTRUCTIONS FOR MEASURING HULL SURFACEROUGHNESS, USING THE BSRA (BMT) MK II HULL SURFACE ROUGHNESSANALYSER

Area Location Pattern

E.1 Hull roughness measurements are to be taken at about 100 locations evenlydistributed around the underwater surface and each measurement location recordedon the location map shown on the specimen data sheet placed at FIGURE E.1.

E.2 From the location map it will be seen that the ship’s length between perpendicularsis divided into 10 girth (or station) bands, of equal length. Each of these bands Portand Starboard is subdivided into areas designated F (flat of bottom) S (sides) and B(boot topping). These areas are further subdivided into strakes which enablesmeasurement locations to be identified. The locations of the areas over which theroughness measurements are taken are to be entered on a table as set out below.

ITEMGIRTHSTATION

NoSIDE REGION STRAKE

MEANROUGHNESSREADING

Range 1−10 P or S F, S or B 1 to 5 forF or S1 to 3 forB

TypicalExample

2 P S 3 100μm

Procedure for Taking and Recording Roughness Measurements

E.3 The measuring of the hull surface roughness is to be by following a system wherebyall areas of the hull are equally represented. Where practical, two measurements onthe flat of bottom, two on the sides, and one on the boot topping in each girth (orstation) band will provide the minimum required number of locations. The hullroughness analysing instrument is to be operated and frequently calibrated strictlyin accordance with the manufacturer’s instructions.

E.4 When measuring the roughness the measuring head of the instrument is to betraversed over the located surface in the indicated operating direction (ie single wheeltrailing), parallel to the keel and in the direction of thewater flow, at the rate of 50mmper second. During traversing it is essential that on a rough surface the contact of thestylus will not be affected by bouncing.

E.5 When the measuring head has traversed over the surface for a distance of more than750mm the printer in the instrument will function automatically, printing out themean of 15 stored peak to valley readings, then a space, followed by all the individualreadings. After measuring the roughness over each location area the mean readingfrom the printout is to be recorded under the appropriate headings in the location ofareas table, above.

E.6 Results are to be analysed and reported in the standard British Marine Technology(BMT) format and the results forwarded to NA 131.


E.2ANNEX E.

E.7 The average Average Hull Roughness (AHR) of all the ‘mean’ evaluation positionreadings is the overall AHR per 50mm sample measuring length and is to be recordedin Section VIE of Form S238/D495, Report of Docking, for future reference.

E.8 The average AHR of the outer bottom of vessels entering service from build, or whenabrasive blasted and the coatings renewed during docking in service will not beexpected to exceed 100μm.


E.3 ANNEX E.

FIGURE E.1 LOCATION MAP FOR ROUGHNESS


E.4ANNEX E.


F.1 ANNEX F.

ANNEX F.

PROCUREMENT CHECK LIST

TITLE . . . . . . . . . . . . . . . . . . . . . . . . .REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . .

Notes:1. This Check List is to ensure that certain aspects of this Naval

Engineering Standard are consulted when preparing a Statement ofTechnical Requirements for a particular application.

2. Clauses where a preference for an option is to be used or where specificdata is to be added are included in the Check Listdata is to be added are included in the Check List.

3. Each item is to be marked either

! = included

NA = not applicable

CHECKNo CHECK CLAUSE No !or NA

1 Interior Compartments coating systems 4.1a.−4.19.1a.

2 Alternative anti-fouling systems 5.1a.(1), (2),(3), (4)

3 Alternative Weatherdeck non-slipcoatings

7.1a.(1), (2),(3)

4 Outer Bottom Hull Surface RoughnessMeasurement

5.2.1.7a.,5.3.1l., 5.3.3e.


F.2ANNEX F.


G.1 ANNEX G.

ANNEX G.

REPORT OF DOCKING SLIPPING OR LAUNCH

G.1 This Annex comprises sections of Form S238/D495 for which the Painters’Organization may be required to provide information. Relevant sections of the formhave been completed in accordance with the guidance given in Section 9.


G.2ANNEX G.

Form S238/D495 − Cover(Revised 10/87)

REPORT—DOCKING/SLIPPING/LAUNCH

a. This Report is to be made on every occasion of a Ship being Docked Down,Slipped, or in the case of New Construction when Launched and copiesforwarded as soon as possible to the undermentioned Authorities.

HMS ACCURACY HM Naval Base Coatwell on Docking Date

Authority Address No of Copies DateForwarded

Director General ShipsRefitting

Carpenter HouseBroad QuayBath

1

Deputy ControllerWarships

MOD(N)Ship SectionBath

3

Commanding Officer ofShip or Submarine

1

Manager of Dockyardand Transport (Fuel andMovements) (For RFAsonly)

Empress State BuildingLillie RoadEarls CourtSW6 1TR

1

Commander in ChiefFleet

18 South TerraceHM Naval BasePortsmouth

1

+ Ship MaintenanceAuthority SubmarineMaintenance and RefitAuthority

+ Submarines Only

Submarine Maintenanceand Refit AuthorityFOSMFort BlockhouseGosportHants

1

Signed ..............................................................

Production Manager/Principal Naval Overseer


G.3 ANNEX G.

INSTRUCTIONS FOR COMPLETING THIS FORM

1. For Ships in Commission when in Yards, other than HM Dockyards, andnot under the oversight of aMOD(N) Overseer, the required copies of thisform are to be prepared by Ships’s Staff and forwarded through the Ship’sAdministrative Authority.

2. The Specal Report section of this form is to be rendered when:

a. The anti-corrosive or anti-fouling paints have severely deteriorated.

b. The corrosion found is considered to be abnormal.

c. Trial paint system/s have been applied and a report is required atthis docking.

d. The ship shows signs of having been aground.

e. ‘Breakage’ has to be reported.

f. Any other matters of importance are evident.

3. For Emergency Docking of less than 4 days’ duration, complete the cover,Section 1 and those sections relevant to the emergency.

4. For Emergency Dockings of more than 4 days’ duration, complete thecover, Section 1, and those sections relevant to the emergency and thePaint Section.

5. For Docking and Essential Defect Period, Normal Refit, Major Refit andPlanned Dockings, all Sections are to be completed.

INDEX *ENCLOSURES

! Section I Docking particulars

! Section II Periods not underway since lastDocking

! Section III Engineering

IIIA Survey of Propellers and Shafting

IIIB Rudder Clearances

IIIC Hydroplane Clearances

IIID Stabilizer Clearances

IIIE Underwater valves

! Section IV Hull

IVA Condition of Hulls

IVB Condition of Hull Attachments

IVC Condition of Sacrificial Anodes

IVD Condition of External and InternalAcoustic Tiling

! Section V Electrical CathodicProtection—Impressed Current System


G.4ANNEX G.

INDEX *ENCLOSURES

Section VI Paint

VIA Details of Anti-Fouling

VIB Condition of Anti-Fouling

VIC Condition of Anti-Corrosive Paint

VID Preparation of Outer Bottom duringpresent Docking

VIE Conditions during Paint Application

VIF Paints applied during the Docking

VIG Special Coating applied

Section VII Special Report/General Remarks

! NOTE: Sections not relevant to NES 760 have been omitted.

* indicate parts enclosed


G.5 ANNEX G.

FORM S238/D496—SECTION VI(Revised 10/87)

REPORT OF DOCKING/SLIPPING/LAUNCH

SECTION VI—PAINTING

HMS ACCURACY at HM Naval Base Coatwell on Docking Date

INDEX

VIA Hull Fouling

VIB Condition of Anti-Fouling

VIC Condition of Anti-Corrosive Paint

VID Preparation of OB during present Docking

VIE Conditions during Paint Application

VIF Paints applied during Period in Dock

VIG Special coatings applied

Signed ..........................................................Range/Grade ................................................Date .............................................................


G.6ANNEX G.

SECTION VI − PAINTING

VIA − HULL FOULING

i. For description of Fouling growths see BR 1245.

ii. The extent of Fouling should be shown thus 0% = NIL, 100% = 100%.

Extent of Fouling on Intact A/F Paint (5)Extent of

Type BootToppingArea

BottomEx AreaBetweenBilgeKeels


PHS/M

ExtHull/SM

Extent ofFoulingwhere A/FPaint ismissing

Barnacles 0 7 5

Tube Worms 0 0 0

Molluscs 0 7 0

Soft BodiesAnimals

0 0 0

Hydroids 0 0 0

Weed—Green 10 0 0

Weed—Crown Red 0 0 0

Slime 70 100 100

VIB—CONDITION OF THE ANTI-FOULING PAINT

Extent of Fouling on Intact A/f Paint (5)

Type BootToppingArea



PHS/M

ExtHull/SM

Intact (ExcludingAbrasion) Damage

75 80 100

Anti-Fouling Wornthrough(ex-Abrasion)

5 5

Flaked fromAnti-CorrosivePaint

15

Chalked orPowderedCracked or Crazed


G.7 ANNEX G.

VIC—CONDITION OF THE ANTI-CORROSIVE PAINT

SURFACE SHIPS

Position Conditionof Paint

AreaAbraded%

AreaBlistering

%

AreaFlaked%

Remarks

Boot ToppingArea

Poor 20 0 0 Failure duemainly toabrasion.

Area betweenBoot Toppingand BilgeKeels

Good 0 2 0 Localized area,possibly damageddue to moisturefrom outletbecoming trappedin coating at latdocking

Bottombetween BilgeKeels

Good 0 0 0

SUBMARINES

Pressure HullOutsideCasing

External Hull

Pressure Hull

CasingExternalCasingInternal

Bridge FinExternalBridge FinInternal


G.8ANNEX G.

VIF—PREPARATIONOFOUTERBOTTOMDURING PRESENTDOCKING

SURFACE PREPARATION*

High PressureWater Jetting

AbrasiveBrushing

WireBrushing

MachineDiscing Scraping Degrease

! ! ! ! 5% ! !

VIE − CONDITIONS DURING PAINT APPLICATION

Environmental ConditionsMethod of DateCoating Relative

HumidityAmbientTemp

SurfaceTemp

Method ofApplication

DateFrom/To

Primer

Anti-Corrosive 1st Coat 80% 12° C 11° C 3

Anti-Corrosive 2nd Coat 3

Anti-Corrosive 3rd Coat 3

Anti-Corrosive 4th Coat

Anti-Corrosive 5th Coat

Anti-Corrosive 6th CoatRound Boot Topping

Tie Coat

Anti-Fouling 1st Coat

Anti-Fouling 2nd Coat

Anti-Fouling 3rd Coat

ii. DRY FILM THICKNESS OF PROTECTIVE SYSTEM—300μ

iii. FINAL TOTAL DRY FILM THICKNESS READING—600μ

iv. HULL SURFACE ROUGHNESS READING—100μ

* INDICATE WITH ! where applicable.

The method of application should be indicated thus:

(1) Brush.

(2) Roller.

(3) Spray.


G.9 ANNEX G.

VIF− PAINT APPLIED DURING DOCKING

i Areas: BELOW BOOT TOPPING 1700sqm Boot Topping 550sqm

ii. Primer.

iii. Brand of Primer.

Anti Corrosive Bottom M/PHExtHull Boot Top

P/HS/M

Casing S/MAnti-Corrosive Bottom M/PH Hull

S/MBoot Top S/M

Inside Inside Outside

Manufacturersand Description

MessrsCTE Brown

Black

as forbottom

Dates of despatchBatch Numbers onDrums

BrownMonth Year 6/85BlackMonth Year 6/86

as forbottom

Total quantity ofA/C used (in litres)of each colour

Chocolate CTE340 litresBlack CTE680 litres

includedinbottom

TIE COATManufacturersand Description

InternationalPaintsINTERTUFRef JKA 464/JXA 465 VinylModified CoalTar

as forbottom

Dates of despatchBatch Numbers onDrums

Month Year 5/87 as forbottom

Total quantity oftie coat used (inlitres) of eachcolour

300 litres includedinbottom

ANTI-FOULINGManufacturersand Description

InternationalIntersmoothHISOLBFA 900SERIESBFA 956 PinkBFA 954 Plum

W JLeigh CoGRASSLINETin-freeM396Black

Dates of despatchand BatchNumbers onDrums

BFA 056 PinkMonth Year 6/85BFA 054 PlumMonth Year 6/86

GRASSLINEBlackMth Yr3/87

Total quantity ofA/F used (in litres)in each colour

BFA 056 Pink550 litresBFA 094 Plum550 litres

GRASSLINETin−freeBlack160 litres


G.10ANNEX G.

VIG—SPECIAL COATINGS APPLIED

Item Details Item Details

Keel X Rudders SFE

Stem SFE Stabilizer Fin Boxes SFE

Skeg X Stabilizer Fins Limpetite(TrialCoating)

Stern Tubes X Hydroplanes X

Impressed Current CPAnode Shield

SFE Sonar Trunks X

Main Inlets and Discharges SFE Hull Outfits X

Shaft Brackets SFE Sea Tubes SFE

i. Confirm that Passive Zincs have been left unpainted. YES/NO

ii. Confirm that Impressed Current Anodes and YES/NOReference Electrodes have been left unpainted.

iii. Confirm that the surface from the stem to 3m abaft YES/NOthe aftermost Sonar Hull Oufit Hull aperture is fair/smooth.


INDEXINDEX.1

ALPHABETICAL INDEX

AApplication methods, 2.5, 5.8, 6.1, 7.2

Application, overcoating times, 2.5, 5.4, 7.2, C.1

BBarrier coating, 1.1, 2.5, 4.1, 4.2, 4.3, 5.7, 6.1, 7.1

Bathroom and heads, 4.2

Battery charging rooms, 4.3

Bridge interior, 4.3

CCleaning and washing, 3.1, 4.5, 5.4, 6.2

DDiesel tanks, 10.1

Divers search lines and draught marks, 5.5, 5.6, 5.7, 5.8

Drying and curing, 2.7

EElectric cables, 4.4

Electrical equipment, 4.4

Emergency escape scuttles, 4.4

Environmental conditions, 8.2

Explosive and pyrotechnic lockers, 4.4

FFresh water tanks, 4.3

Furniture, 4.4

GGeneral decks and dados, 4.1

General exposed insulation, 4.1

General GRP skin/balsa core bulkheads, 4.1

General GRP structure not insulated, 4.1

General interior compartments, 4.1


INDEX INDEX.2

HHelicopter drop zone, 7.3

High pressure water jetting, 5.4, 5.6

Hull surface roughness, 5.5, 5.7, 5.8

IItems not painted, 10.1

KKit lockers, 4.4

MMachinery rafts, 4.2

Machinery seatings, 4.2

Main machinery rooms, 4.2

Maintenance of coatings, 4.5, 6.2, 7.3

Metallic pipe systems, 4.4

Modified interior fire retardant paint, 2.5

OOuter bottom approved anti-fouling paint systems, 5.1

Outer bottom complete removal of coatings, 5.7

Outer bottom during build, 5.1, 5.4

Outer bottom routine dockings, 5.5

Outer bottom unprogrammed dockings, 5.6, 5.7

PPaint removal, 3.2

Pot life, 2.6, 7.1

Precautions, 5.8, 9.1

Preparation of surfaces, 5.4, 5.6, 7.2

Propellers and shafts, 5.5

Protection of surfaces, 7.2

QQuality assurance, 8.1

RRudders GRP, 5.5


INDEXINDEX.3

SSewage collection tank, 4.3

Shaft brackets, 5.5

Ship’s identification markings, 6.2

Sonar domes, 5.9maintenance of the coating in service, 5.9painting, 5.9surface preparation, 5.9

Spreading rates, 2.6, 5.7, 7.2

TTie coats, 5.1

VVentilation trunking, 4.3

WWeatherdeck maintenance in service, 7.3

Weatherdeck mixing, 7.1

Weatherdeck non-slip compositions, 2.5, 7.1

Weatherwork, 6.1

Weatherwork during build, 6.1

Weatherwork mixing, 6.1

Weatherwork, removal and renewal of the paint system, 6.2

Wet & dry film thickness, 5.7

Wet and dry film thickness, 2.5, 2.6, 5.1, 6.1, 7.2, 8.2

Wood sheathing on transom and ship sides, 6.1


INDEX INDEX.4

Inside Rear Cover

© Crown Copyright 2000

Copying Only as Agreed with DStan

Defence Standards are Published by and Obtainable from:

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Directorate of StandardizationKentigern House65 Brown Street

GLASGOW G2 8EX

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Tel 0141 224 2531/2 Fax 0141 224 2503

Internet e-mail [email protected]

File Reference

The DStan file reference relating to work on this standard is D/DStan/69/02/751.

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Revision of Defence Standards

Defence Standards are revised as necessary by up issue or amendment. It is important thatusers of Defence Standards should ascertain that they are in possession of the latest issue oramendment. Information on all Defence Standards is contained in Def Stan 00-00 Standardsfor Defence Part 3 , Index of Standards for Defence Procurement Section 4 ‘Index of DefenceStandards and Defence Specifications’ published annually and supplemented regularly byStandards in Defence News (SID News). Any person who, when making use of a DefenceStandard encounters an inaccuracy or ambiguity is requested to notify the Directorate ofStandardization (DStan) without delay in order that the matter may be investigated andappropriate action taken.

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