3d model review checklist

PTT Exploration and Production Public Company Limited

PTTEP Engineering General Specification

PEGS

Model Review Check List

Document No: PEGS-0710-ADM-008

Revision No: 0-0

Revision Date: February 2012


February 2012 Rev.0-0 Registry UNCONTROLLED when printed, visit PTTEP Intranet for latest version

Revision History

Rev Description of Revision Authorised

by Date

0-0 New Document

Model Review Check List PEGS-0710-ADM-008

February 2012 Rev.0-0 TOC UNCONTROLLED when printed, visit PTTEP Intranet for latest version

TABLE OF CONTENTS

1.0 Purpose ................................................................................................................... 1

2.0 Scope ...................................................................................................................... 1

3.0 Definitions .............................................................................................................. 2

3.1 Language ............................................................................................................................. 2

3.2 Terminology ......................................................................................................................... 2

3.3 Common Acronyms .............................................................................................................. 3

4.0 References .............................................................................................................. 4

4.1 PTTEP Internal References .................................................................................................. 5

4.2 International Standards ........................................................................................................ 5

4.3 Industry Codes and Standards ............................................................................................. 5

5.0 TOOLS..................................................................................................................... 6

5.1 Support Documents and Drawings ....................................................................................... 6

5.2 3D Model Check List ............................................................................................................ 6

5.3 Model Review .................................................................................................................... 19

5.4 Responsibilities .................................................................................................................. 29

5.5 Comment Tagging .............................................................................................................. 29

6.0 APPENDICES ........................................................................................................ 30

Appendix 1. 3D Model Review Comments.................................................................................... 30


February 2012 Rev.0-0 Page 1 of 31 UNCONTROLLED when printed, visit PTTEP Intranet for latest version

1.0 PURPOSE

The purpose of this specification is to provide the minimum requirements for model review

check list for checking 3D CAD models for both offshore and onshore facilities on a

continuous basis and during formal model review. The checklist is general in nature and may

require modifications for specific project requirements.

2.0 SCOPE

The 3D Model Review is intended to provide a complete review of all modelled items,

including the following:

1. Check Equipment Arrangement.

2. Check that all disciplines design input is in accordance with project requirements /

COMPANY specification including safety, operability and maintainability.

3. Check Constructability, Operability and Maintainability aspects.

4. Verify that piping design arrangements/routing are consistent with process

requirements.



3.0 DEFINITIONS

A number of different terms are commonly used to describe the work stages, processes, and

approvals which take place during the early stages of a development. This can often be a

source of confusion so the following section is intended to show the PTTEP preferred

terminology as used in this document.

3.1 LANGUAGE

In this document, the words should and shall have the following meanings:

Should Indicates a preferred course of action. Should is a non-mandatory word and is not forbidden, but use in the body of the text should be the exception. Where none mandatory terms are used, each paragraph within these clauses shall also have an associated commentary paragraph that provides the rationale for why the stated choices and modifications are appropriate and circumstance under which the stated choices and modifications might be different.

Shall Indicates a course of action with a mandatory status. The term shall shall be used if a requirement is considered to be necessary to claim compliance with a PEGS document.

3.2 TERMINOLOGY

Terminology Description

3D CAD Model An overall project three dimension computer model comprising of piping equipment (including safety equipment), structural, electrical, instrument and civil design including infrastructures

Action List Log Document that contains a list of comments/actions to the 3D CAD model during the review

Approval The authorization in writing given by the COMPANY to the Contractor on a procedure or to proceed with the performance of a specific part of the work without releasing in any way the Contractor from any of his obligations to conform with the technical specifications, requisitions, etc. The words Approve, Approved and Approval shall be construed accordingly

AutoPLANT Bentleys 3D Design Computer Software

COMPANY PTT Exploration and Production Public Company Limited

Contract Documents The material requisitions, material specifications, etc. issued by the COMPANY and attached to the Contract or the Purchase Order

Contractor Per contract: Contractor The contractor who is a PARTY to this CONTRACT and where the context so requires, any and all SUBCONTRACTORS utilised by CONTRACTOR for the performance of the WORK

Model File A neutral file exported from PDMS which will be used for Review Reality Software to generate the3D model. Or a neutral file exported from AutoPLANT, which will be used for Navisworks review software to generate the 3D model

Navisworks Bentleys proprietary computer software that enable the review files for AutoPLANT 3D CAD Model

PDMS

Avevas Vantage Plant Design Management System proprietary computer software



Terminology Description

Review Reality Avevas proprietary computer software that enables the review of a PDMS 3D CAD Model.

Status File A file that stores the colour definitions, Walk-Through animations (if any), Camera definitions etc.,

3.3 COMMON ACRONYMS

Set out below in alphabetical order are common acronyms as found within this document:

AFC Approved For Construction

API American Petroleum Institute

ASME American Society of Mechanical Engineers

ASTM American Society for Testing and Materials

AutoPLANT Bentley 3D Design Software

CAD Computer Aided Design

CAPEX Capital Expenditure

EPIC Engineering design, procurement, installation and construction

HVAC Heating Ventilation and Air Conditioning

ISO International Standards Organisation

ISO/TC67 ISO Technical Committee 67

OPEX Operational Expenditure

P&ID Process and Instrument Diagram

PDMS Plant Design Management System

PEGS PTTEP Engineering and General Specification

PMT Project Management Team

PPS Project Particular Specification

PS Pipe Support

PTTEP PTT Exploration and Production Company Limited

QMS Quality Management System



4.0 REFERENCES

The reference documents listed below, including Industry Codes and Standards and PTTEP

specifications, form an integral part of this Engineering General Specification. Unless

otherwise stipulated, the applicable version of these documents, including relevant

appendices and supplements, is the latest revision published on the effective date of a

contract.

The overall order of precedence of the applicable documents shall be:

1. Applicable Laws, Rules and Regulations

2. International Rules, Codes, and Regulations

3. Purchase Order/ Service Order/ Contract Documents (Only applicable for direct

purchase by COMPANY)

4. Project Particular Specification (PPS)

5. COMPANY General Specification

6. Codes and Standards in reference

Any conflict between any of the Contract Documents, or between this specification and any

other Contract Document, shall be reported to PTTEP for decision. In such a case, and

unless otherwise agreed or decided by PTTEP, it is understood that the more stringent

requirement shall apply. Exceptions to, or deviations from this specification are not permitted

unless previously accepted in writing by PTTEP. For this purpose, requests for substitutions

or changes of any kind shall be complete with all pertinent information required for PTTEP

assessment. PTTEPs approval, nevertheless, will not, in any way, relieve the responsibility of

the Contractor to meet the requirements of the industry Codes and Standards referred to and

amended herein, in the event of conflict.



4.1 PTTEP INTERNAL REFERENCES

Internal documents applicable to this document are indicated in the table below.

Document Number Document Title

PEGS-1015-SAF-001 Layout

PEGS-1015-SAF-005 Escape, Evacuation and Rescue from Fixed Installations

PEGS-0710-ADM-007 PDMS Standards and Procedures

PEGS-0710-PIP-001 Piping Design, Fabrication and Installation

4.2 INTERNATIONAL STANDARDS

International standards applicable to this document are indicated in the table below i.e. ISO,

IEC or ITU.


ISO 10005 Quality Management System Guidelines for Quality Plans

4.3 INDUSTRY CODES AND STANDARDS

Industry codes, standards and regional legislation applicable to this document are indicated in

the table below.


API RP 14J Recommended Practice for Design and Hazards Analysis for Offshore Production Facilities

API RP 500 Classification of location for Electrical Installation at Petroleum Facilities

CAP 437 Offshore Helicopter Landing Areas Guidance on Standard

NFPA 13 Standard for the Installation of Sprinkler System

NFPA 30 Flammable and Combustible Liquids Code



5.0 TOOLS

The following listed below are the main software to be used for the internal group and client

model reviews

1. Averas PDMS or Review Reality

2. Bentleys AutoPLANT or Navisworks

Note: The COMPANY will designate the 3D CAD software to be utilised before the commence

of the project.

Reference items, reserved volume, etc, and an operator of the same scale as the model under

review, will be available. This model operators dimensions will be representative of the

applicable population.

5.1 SUPPORT DOCUMENTS AND DRAWINGS

Prior to model reviews, the following documents of latest revisions shall be prepared and will

be made available during the model review session. These will be marked as Model Review

Master.

1. P&ID

2. Equipment Layouts

3. Escape Route Layouts

4. Equipment List

5. Line List

6. Previous model review action list (as applicable).

The following documents and drawings will be made available during the model review, upon

request:

1. Equipment dimensional details.

2. Instrument Index.

3. Fire Fighting Equipment Layouts.

4. Safety Equipment Layouts (including main escape route and muster area)

5. Mechanical Handling Study.

5.2 3D MODEL CHECK LIST

5.2.1 Safety

1. Any special or specific safety requirements.

2. Adequacy of coverage and avoidance of dead ends on main access/escape routes.

3. Emergency exits from rooms and platforms (staircases or ladders), hand railing.



4. Location of fire pumps, hydrants, monitor and hose reels, and fire hose cabinets.

Equipment shall be easily accessible and installed in a position / orientation to enable

quick operation e.g., opening of cabinet door will not obstruct the access to hydrant.

5. Emergency shutdown valve locations to optimize the isolated sections.

6. Spillage containment/collection.

7. Rain water drainage systems.

8. Escape routes to muster areas/Boat landing

9. Area adequacy and equipment arrangement around lifeboat / life raft embarkations to

prevent obstruction and optimise embarkation time.

10. Safety shower and eye wash locations.

11. Location of safety/portable fire fighting equipment. Equipment shall be clearly visible

and easily accessible.

12. Deluge and back-up valve station locations.

13. Fire Truck Station (onshore).

14. Flare stack, burn pit vocation and sterile zone.

15. Obstruction or infringement of escape route width or head clearance by structure

(bracing, beams, piping / cable tray support, etc.) or any equipment (e.g. junction

boxes, instrument, cable tray, etc.).

16. Spray/sprinkler nozzle orientation around equipment.

5.2.2 General Layout and Maintenance

1. Location of the Vents/ Exhausts in safe area.

2. Escape routes / maintenance and operations access routes for all equipment

3. Safety distances between equipments.

4. Platform arrangement to optimize operational maintenance requirements and provide

good access and working room around all equipment.

5. Platform arrangement to optimize adequate and easy access ways for fire fighting

equipment.

6. Clearances for operation, maintenance and removal of electrical equipment and

transformers from each room.

7. Future expansion provision for future equipment and piping (space and access).

8. Check valve accessibility both from operation and maintenance point of view. Ensure

that valves (specifically small bore drain valves) are not located such that, it becomes



liable to be damaged or poses a tripping hazard specific requirement are detailed in

the engineering standards applicable to the project.

9. Provision of access / clearance between skid mounted packages or equipment to

allow for dismantling of any part, special tools or consumables to be used for

maintenance.

10. Dropped object protection, equipment or piping containing hydrocarbons below crane

sweeps.

11. Hazardous area classification / Non classified equipment.

12. Fire and gas detectors locations, orientation and coverage.

13. Over all plant layout and facilities, (utilities, process, storage, loading and unloading

station, Buildings, Jetties and marine), effluent and waste water treatment and flare

stock area.

14. Pipe rack and pipeway layout.

15. Main and secondary access roads.

16. Road crossing, trenches and culverts

5.2.3 Accessibility / Operability / Maintenance

1. Use of platforms, catwalks stair and fixed ladder.

2. Use of movable / temporary means: platform, self-elevated platforms and etc.

3. Compliance with Material Handling Philosophy.

4. Crane access

5. Lay down area

6. Tube bundle removal area

7. Catalyst and chemical loading area

8. Cartridge / filter handling, removal and replacement

5.2.4 Package Units

Package Units are not normally modelled in detail and are usually shown as a block. Ensure

the package does not infringe into escape routes or fire / safety equipment. Ensure adequate

space is available for access and for removal of components of the package units.

5.2.5 Model Layout

1. Check that model shows economic and efficient use of the platform area.

2. Check that electrical equipment is located in accordance with area hazard

classification.



3. Check that access ways, maintenance areas and operation areas are within the

required minimum dimension. These include main escape routes and muster point

volumes, withdrawal space and equipment/material handling area.

4. Check location of particularly noisy equipment, valves etc. in relation to the frequency

of visits by operating and maintenance personnel to the area.

5. Check the overall plant layout including unit location between ISBL (Inside Battery

Limit) and OSBL (Outside Battery Limit)

6. Check road and road crossing layout

7. Check drainage system

5.2.6 Heat Exchangers

1. Check that the number of shells matches the P&IDs.

2. Check the arrangement of exchangers and associated piping.

3. Check if adequate space is allowed for bundle removal and that lifting beam, devits

and pull beams are provided as necessary. Check that flangeless butterfly valve still

isolate on tube pulling.

4. If a vent is required on the exchanger for periodically purging non-condensable

vapours, it should be readily accessible. The vent should be shown in the model.

5. Piping for a true counter-current exchanger must be properly shown as counter-

current.

6. If different shells of multi shell exchanger have different metallurgies, check if shells

are properly arranged and labelled.

7. For air cooler, both single and mixed phase, in service where it is important that the

outlet temperature be maintained, the piping arrangement must be symmetrical. For

air cooled condensers, pockets must be avoided in the outlet piping and hot vapour

by-pass lines. See that elbows rather than tees are used at the ends of the headers.

Dead legs in capped headers should be reduced to a minimum. Check configuration

against Process Department Specification and Licensors requirements.

8. Temperature sensing point for exchangers with hot gas by-pass is to be located in

the combined process stream outlet manifold.

9. Check adequate clearance and maintenance access is provided for motors, fan belts

and A/V hub of air coolers.

10. Check access for plug removal and tube-cleaning on air coolers.

11. Check hot equipment/line under air coolers, e.g. fire risk from hot pump, hot lines

which could affect air temperature to bundle.

12. Check crane access for removal of bundles.



13. Check escape routes from each bank of air coolers are consistent.

14. Consider access ways between air cooler platforms and adjacent structures to safe

operators time climbing ladders and provide a safe means of escape.

15. Check location of break flange on piping at shell and tube exchangers and air coolers

to facilitate bundle removal.

5.2.7 Fired Heaters

1. For fired heaters that have removal spool pieces, temperatures indicators must be

placed upstream of the removal spool piece on the header outlet side and

downstream of the removal spool piece on header inlet side.

2. Check that the correct number of passes are shown and if necessary, check that they

are symmetrical.

3. Check that all auxiliary lines are shown and that they are accessible to the operators.

4. Check that all fined header instrumentation is shown.

5. For reboilers that are fired headers, check that the total pressure drop in the reboiler

return line does not exceed the pressure drop that was originally allowed.

6. In vacuum units, the vacuum transfer line shown on the model must be checked

against the original layout issued to Process for final hydraulic check.

7. Check that burner firing valves are located such that burner flames can be observed.

8. Check adequate escape routes.

9. Check clearance for burner gun removal.

10. Check to eliminate dead-legs in heavy fuel oil lines and waste gas lines.

5.2.8 Vessels

1. Check that the vessel, including its support, ladders and platforms, is correctly

modelled.

2. Check for correct nozzle orientation.

3. Check attached piping, structures and equipment regarding vessels design loading.

4. Tangent line elevation is not shown on the model but can be roughly measured.

Check for consistency with elevation shown on the P&IDs.

5. Check methods of access to manways and handholes. Should manways be hinged?

Check direction of cover swing. Beware of adjacent instruments.

6. Check erection aspects of the vessel. Will it arrive at site in one or more pieces? How

will it be fitted into any structure? Are lifting attachments adequate and correctly

positioned?



7. Level gauges and other instruments must be readable from either grade or platform

and where necessary, readable from a globe or control valve. Check access is

provided for isolating valves. Check relative elevations of LG, LC, LAH and LAL.

8. Drums, which have a water boot, must be sloped towards the boot. This is indicated

by a slope label. Check that location of the boot is opposite from the feed inlet on the

vessel.

9. For horizontal vessels, check which is sliding and fixing saddle and relationship with

main nozzles.

10. Check if the vessel can be conveniently drained. Check that outlet valves are located

outside the vessels skirt.

11. Check that adequate access and escape routes are provided on vessels platforms.

12. Check location of vent in relation to manhole and steam-out to permit vapour to be

swept out.

13. Ensure fuel gas connections are above high liquid level.

14. Ensure adequate platform area is at location where vessel internals or packing is

loaded.

15. Check insulation requirement and thickness.

16. Check designated laydown areas for chemical / catalyst loading requirements.

5.2.9 Pumps

1. Pumps and their spares or common spares should be arranged together in a group

and should be located reasonably close to the vessel supplying the suction.

2. Suction line length to be a minimum, with no pockets.

3. Check location and orientation of valves, not return valves and fire isolation valve in

suction and discharge line.

4. Check inlet configuration for double suction pumps to ensure equal distribution of flow

to both suctions.

5. Check symmetry of piping on pumps operating in parallel.

6. Check adequate drains are provided on suction and discharge line and/or pump. Pay

particular attention to light end/corrosives pumps and allow for safe removal of

drained material.

7. Check permanent strainers are correctly located and sufficient clearance allowed for

cleaning. Check that removable spools and correct support locations are provided on

temporary strainers.



8. Check that all instrumentation associated with pumps is, shown is accessible and

readable.

9. Check NPSH on pumps where this is critical.

10. Check cleaning, flushing, warm up and recirculation facilities.

11. Check accessibility to the pump for maintenance. Check any special lifting tackle

required.

12. Check consistency of piping configuration at pumps throughout the plant.

13. Check for pump suction line straight length requirements.

5.2.10 Compressors

1. Liquid in compressors suction lines must be avoided. Suction lines should have no

pockets. The suction line should be self-draining back to the knockout drum if

possible. Where pockets are unavoidable, provisions must be made for automatic

draining of the liquid.

2. Check atmospheric suction intake location regarding hazard, contamination,

reliability, area classification, temperature, etc.

3. On reciprocating compressors, safety valves must be located upstream of discharge

block valve.

4. On reciprocating compressors, pulsation dampeners should be shown on the model.

5. Check location and orientation of swages, valves, non-return valves and fire isolation

valves in suction and discharge lines.

6. Check adequate drains are provided on suction and discharge line and machine.

7. Check suction and discharge line tracing, acoustic insulation and etc.

8. Check instrumentation including panel associated with machine.

9. Check suction and discharge filter, strainers, etc.; location and access for operation

and maintenance.

10. Check anti-surge and recycle lines, blow-off line and silencer.

11. Check machine location in relation to other operating or spare machinery and to its

control panel.

12. Check layout or auxiliary systems and pipe work such as Lube Oil, seal oil, filtration,

cooling water and instrument panels in relation to adjacent equipment, structures,

pipe work, duct work, underground system, etc.

13. Check space, headroom and lifting tackle for maintenance of the machine and its

auxiliary equipment.

14. Check acoustic hoods, enclosures, silencers and their removal.



5.2.11 Other Mechanical Equipment

For other types of mechanical equipment, it is not possible to be specific on the type of checks

to be carried out on the model. For some equipment, e.g. blowers, some or all of the checks

listed under pumps and compressors will apply. For other more specialist equipment, the

model should be reviewed bearing in mind the function of the equipment and considering

operation, maintenance, access and safety aspects of the design.

5.2.12 Piping Layout

1. All process lines on the model must be checked to see that they agree with the latest

issue of the P&IDs.

2. In the critical services listed below, it may be necessary to conduct a detailed

hydraulic check of the model to ensure against excessive pressure drop. These

checks must be made initially on layouts and the model reviewed for conformity to the

approved layout:

a. Pump Suction Lines

b. Compressor Recycle Loops

c. Inlet Lines to Safety Valves

d. Other critical systems where allowable pressure drop may be limited.

3. Although several pipe fittings may at times be required for thermal expansion, be alert

to check for cases where it may be possible to reduce what appears to be an

excessive amount of pipe fittings. Optimise fittings in suction lines.

4. Special attention must be given to vapour-liquid mix points in compressor systems.

Piping must be arranged to avoid backflow of liquid to the compressor. A

recommended procedure is to have the vapour line taken off the top of the liquid pipe.

5. Special attention must be given to process lines that require no pockets such as

two-phase flow, flurry or overhead vapour lines.

6. Check access to valves and blinds in accordance with frequency of operation and the

project standards. Where possible, make all valves and blinds accessible from grade

or platforms.

7. Check that literal translation of P&IDs has not produced excessive pipe lengths.

8. A tundish and piping to drain is necessary for some process materials from vents and

drains, as specified on P&IDs.

9. Check that piping does not constitute trip or head hazard, nor does it block access as

far as practical.

10. Special areas requiring detailed attention:

a. Slurry lines



b. Corrosive fluids

c. Fluids which freeze or become very viscous at ambient temperature

d. Flammable hydrocarbons above their boiling point

e. Fluids close to crystallisation point

f. Two phase flow, especially in vertical lines

11. Check that a suitable length of pipe is provided where adequate mixing is required.

(chemical injection)

12. Review start-up recirculation lines to ensure valving is reasonably adjacent.

13. Check that all atmospheric vents and manhole vents have been piped safe location.

14. Check that sample points are accessible from deck or a platform. Check also for

dead legs.

15. Check that geographic arrangement of lines agrees with P&IDs.

16. Check location and adequacy of flushing, oil and slop oil. Avoid dead legs where

practical.

17. Review location of control valves; particularly, check that:

a. Control valves not normally operating are free draining

b. Valves in flashing services are close to downstream equipment, i.e. minimum

length of larger bore piping

c. Valves which would cause major process upset if they failed are at deck or

platform.

18. Check that flanged connections required for dismantling and maintenance are

provided and are accessible.

19. Check location of fire-fighting hydrants, monitors and hose reels.

20. Review utility piping, especially distribution systems from common headers with

particular reference to valving of sub-headers and take-offs to ensure an economical

and practical arrangement is provided. Agree standard hook-ups for utility stations at

an early stage of the model. Ensure utility headers are independent for independent

units.

21. Check hose connection locations and access, especially those handling hazardous

materials.

22. Check that hazardous materials lines have minimum number of flanges.

23. Check that blinds are on the correct side of the valve and accessible.



5.2.13 Instrument

1. P&IDs checks

Check that all instruments shown on the P&IDs are present on the model and

identified by tags number (except for TIs and PIs indicated by coloured tag only).

Apart from identifying presence of instrumentation, the points covered by the

following paragraphs should be considered.

2. Accessibility

Ensure that all instruments shown are accessible both from an operators point of

view and that of a maintenance engineer. Ensure instruments are not located such

that they are liable to be damaged or form a tripping hazard. Specific requirements

are detailed in the Engineering Standard applicable to the Project.

3. Orifice Flange Sets and In-line Equipment

Check that Orifice Flange Sets are in the correct line and accessible. Orifice sets with

close coupled transmitters should be accessible from grade, platform or by ladder.

Access height above grade or platform may be determined by the Project

Specification. If the access is by temporary ladder, check that the area beneath the

orifice assembly is not too congested. Review the straight runs provided for orifice

plates. If flange sets are in vertical runs, check that the flow direction is correct.

Check orientation and piping connections for rotameters. Ensure all other in-line

instrument equipment is correctly orientated and is accessible.

4. Level displacers

Check the orientation of Level Displacers and Level Gauge Glasses with respect to

access/platforms or ladders. Where possible, access to level displacers should be

from a platform. If an access ladder is provided, check that the instruments are visible

and serviceable from the ladder.

Check the height of platforms relative to displacer cases, bearing in mind that the

instrument case associated with a rotatable head displacer is approximately 30 cm

above the top side connection of a displacer. Mark up Materials Requisitions for

instrument orientation i.e. L.H. (left hand) or R.H. (right hand) and the orientation of

the connection on the displacer chamber.

5. Temperature and Pressure Tappings

Check the location of TWs and PIs for accessibility and TI removal. Location of these

instruments on top of tall columns should be avoided if possible. Check location

against vessels data sheet.

6. Control valves

Check that control valves are installed in the correct line and check their location.

Control valves should preferably be installed at deck and access platform with the

pneumatic operator in a vertical position.



7. Flow meters

Check the upstream and downstream straight length requirements. Check access,

maintenance, calibration and monitoring requirements.

5.2.14 Structural Steel

1. Clearance between piping and steel structure should be checked.

2. Final deck penetration.

3. Ensure that all bracing shown on structural drawings is shown on the model and that

piping, equipment, access ways and maintenance areas are clash free.

5.2.15 PSVs

1. PSV will usually be provided on the discharge line from turbines and reciprocating

equipment upstream of any block valves to protect the casing. Check requirements

with P&IDs.

2. All PSV discharge lines going to flare must be self-draining to the flare header, which

may be indicated by an arrow. The length of the discharge line should not be

excessive.

3. For safety purposes and for consistency between equipment design pressure and

PSV set pressure, the PSV must be located reasonably close to the primary item that

it is protecting.

4. Check all PSV inlet lines for pressure drop and conformity to the 3 Percent Rule

given in API RP 520. For situations, which may appear to be very tight, it may be

necessary to perform a detailed piping take-off of the model in which each length of

line is measured and every fitting is accounted for.

5. Check that all PSV discharging to the atmosphere are vented in a safe location. Drain

(weep) holes to be provided on atmospheric discharges where liquid can accumulate.

Consider piping drain to safe location.

6. In an all-liquid system, the set pressure of the safety valve is determined by its actual

location relative to grade. If the valve is located close to grade, the set pressure will

be higher than if it is mounted high in the air. The model should be checked for

consistency between the PSV location and its set pressure.

7. Where PSV is relieving hazardous (hot, corrosive, noxious) material to atmosphere,

be very careful in defining safe location and consider effect on area classification.

8. Check line size where several PSV discharges are combined into one sub-header.

9. Check platform access is provided for operation and maintenance of PSVs. Ensure

davits are provided for heavy PSVs at elevated positions. Ensure space available for

drop out at grade.



5.2.16 Utilities

1. Check the Utility Systems shown on the model against Project standards and Utilities

P&IDs latest masters. This includes PID notes and standard assembly drawings /

symbols.

2. Review the routing of exotic, hazardous and large diameter utility lines.

3. Check utilities/instruments location and access

4. Check utilities valves type, location and access.

5. Check access to utility equipment.

6. Check location of utility stations relative to user points.

5.2.17 Civil

1. Check access road and road crossing layout.

2. Check pipe rack and pipeways location.

3. Check rain water drainage, pit, and catch basin.

4. Check building location / area.

5. Check underground facilities and trenches.

6. Check perimeter fence layout

7. Check culvert location / area.

8. Check Interceptors and effluent treatment facilities.

9. Check foundations and pedestal volumes / elevation.

5.2.18 Storage tanks (Intermediate / Product / Feed stack Tank Farms)

1. Check bund wall requirements area / volume.

2. Check drainage system, including rain water and accidentally oily contaminated water

(AOC).

3. Check tank to tank spacing requirements and orientation, including sphere and bullet

tanks.

4. Check pipeways spacing (location and routing).

5. Check tank foundation elevation.

6. Check transfer pump location and suction nozzle elevation.

7. Check battery limit valve and actuated control valve location and access.

8. Check tank access including staircase and platforms

9. Check instrument location and access.



10. Check maintenance access, including ramp location (if applicable).

11. Check bund wall penetration and location.

12. Check tank farm minimum spacing requirement with reference to plant overall layout.

5.2.19 Truck loading / unloading station

1. Check road layout including turning curve and radius.

2. Check spacing, for multiple loading / unloading bays.

3. Check loading arm access, platforms, staircase and vertical ladders.

4. Check vents line routing.

5. Check structure headroom requirements.

6. Check Truck loading / unloading minimum spacing requirement with reference to

plant overall layout.

5.2.20 Infrastructure (administration building / laboratory / warehouse / central control

room / electrical room / maintenance shop

1. Check building location with reference to plant overall layout.

2. Check allocated area / volume with reference to space requirements.

3. Check utilities requirements.

5.2.21 Underground Facilities

1. Check foundation area, volume and layout.

2. Check culvert and trench location, slope requirements.

3. Check storm drain pit and catch basin location and elevation.

4. Check underground pipe routing (closed / open drain) including slope / free draining

requirements.

5. Check underground electrical / instrument cable routing.

6. Check spacing requirements and elevations between piping, electrical, instrument

and other facilities.

7. Check valve pit location and elevation.

8. Check underground vessels (open / closed drain) location with reference to overall

plot layout.

9. Check underground vessels (open / closed drain) elevation.

5.2.22 Miscellaneous

1. Review extent of fireproofing and consider any effects on adjacent piping or

equipment



2. Review locations of electrical/instrument cable trays and consider their effect on

adjacent equipment.

3. Check insulation requirements (thickness) represented as volumes on equipments,

piping and instruments.

4. Check pipe shoe type for hot and cold insulated lines.

5.3 MODEL REVIEW

5.3.1 Model Review Purpose

The purpose of this document is to provide guidelines on when and how to conduct 3D Model

Reviews. Formal model reviews will be to ensure that the equipment, piping layout,

accessibility, maintainability, operations and all other aspects of the design is satisfactory to

COMPANY requirements. It also enables the COMPANY to review the design in 3D visual

reality, thus reducing the time for review of 2D general arrangement drawings during the

detailed modelling phase. Formal Model Reviews will be conducted on a specific design area

at a schedule time outlined by the project management team. Prior to a formal COMPANY

model reviews an internal model review shall be conducted with all discipline leads to ensure

that the design is challenged and that any areas of concern or COMPANY specific issues are

presented during the formal model review for discussion and acceptance.

5.3.2 Model Review Participants

The Contractor shall be responsible for notifying COMPANY and all disciplines of the time and

venue of the model reviews.

Each Model Review session will be attended by the following:

COMPANY Representatives

1. Process full time

2. Maintenance full time

3. Construction full time

4. Operations full time

5. Project Engineer(s) full time

6. Other Disciplines full time/on call

Contractor Representatives

1. Project Manager / Engineer(s) full time

2. PDMS / AutoPLANT Administrator full time

3. Lead Piping Engineer(s) full time (Unit lead(s) - as required)

4. Process Engineer(s) full time for process related/on call



5. Mechanical Engineer(s) on call

6. Instrument/Electrical Engineer(s) on call

7. Structural Engineer(s) on call

8. Safety Engineers(s) full time

9. HVAC on call

10. Civil Engineer(s) on call

Lead Piping Engineer will act as the Model Review Leader. He will direct the Model Review

and lead the Model Review Team through each unit, highlighting the features of the unit.

The Lead Piping Engineer, Process Engineer and the other Discipline Engineers (on call

basis) will assist in the Technical Aspects of the Model Review and will explain the design

considerations employed and answer questions from the COMPANY.

The PDMS / AutoPLANT Administrator will act as the Model Review Operator. He will handle

the computer aspects of the Model Review, navigating around each area during the review

sessions as instructed by the Model Review Leader.

5.3.3 Review Milestone Stages

Unless otherwise specified by COMPANY, there will be 3 model reviews conducted at

milestones of 3D model development as below.

1st Stage: At approx. 30 % Model progress - 30 % Model Review

2nd Stage: At approx. 60 % Model progress - 60 % Model Review

3rd Stage: At approx. 90 % Model progress - 90 % Model Review

5.3.4 Model Review Aspects

The overview content of the review will be:-

1. Safety

2. Operations

3. Process compliance

4. Maintenance

5. Constructability

6. Accessibility

The content and the items to be reviewed at each stage are detailed below.

5.3.5 30 % Model Review

The Objective of the 30 % Model Review;



1. To agree the layout of the platform (offshore facilities) / plant (onshore facilities)

meets the base hazard recommendations, and requirements of the project.

2. To freeze the location of the main equipment information available.

3. To identify the primary Operability / Accessibility / Maintainability

4. To Identify Improvements / Modifications to meet the predominantly the safety and

Operational Aspects.

The content of the model will include the following:

Safety

1. Safety egress routing volume.

2. Primary escape routes defined and marked (including secondary where required).

3. Safety distance between equipment.

4. HAZID comments

5. Location of the flares / vents / exhausts in a safe area.

6. Fire hazard zone / restricted area / impacted area.

7. Arrangement of the plant to optimize operational maintenance requirements and

provide good access and working room around all equipment.

8. Overall plant layout

9. Location of Fire Truck Station (onshore)

10. Safe location of Temporary Refuge (TR), Muster Area (on/offshore), Lifeboat

embarkation area (offshore)

Structural

1. All primary and secondary steel framing.

2. Intermediate platform

3. Main access stairs

4. Architectural Items including shelter / stores / technical building / blast wall /

workshops/ equipment rooms.

5. Boat landing location

6. Riser / J tube locations

7. Miscellaneous jacket / riser protection

8. Major piperacks

Mechanical

1. Location of all major process and utility equipment including HVAC (to data available)



2. Crane reach and handling

3. Platform crane

4. Monorails and Davits (to Data available)

5. Location and orientation of all equipment and other space consuming Items (to data

available)

6. Package Unit Location and orientation (to data available)

7. Equipment withdrawal / Handling areas

8. Primary Laydown areas / Access Hatches.

9. Primary Operating Platforms for Valves, Equipment and Maintenance.

10. Designated laydown areas for chemical / catalyst loading requirements.

11. The detailing of equipment packages will be in basic block format.

Piping

1. Majority of large bore critical process lines, and utility lines.

Electrical / Instruments

1. Major Electrical Equipment

2. Preliminary Main Electrical and Instrument Cable Ladder Routes

3. Location and Volume of Electrical and Control Rooms

Reserve Volumes

1. Primary and Secondary Safety Routes

2. Maintenance Areas

3. Access around all equipment

4. Withdrawal Areas / Handling Areas.

5. Future Equipment

Civil

1. Main and secondary access road layout, including road crossing structures and

culvert

2. Crane access for both construction and maintenance activities

3. Infrastructure volumes Administration building, Laboratory, Central control room,

Electrical room, Warehouse, Maintenance shop etc.

4. Pipe rack and pipeway layout

5. Location of interceptors and effluent treatment facilities



6. Equipments support, foundations and pedestal


The Objective of the 60 % Model Review.

1. To identify if any layout modifications have impact on the safety philosophies and

requirements as previously agreed in the 30 % Model review.

2. To review the location of secondary fire / safety equipment

3. To identify if the location of the Main Equipment has been updated

4. To review the location of Minor equipment.

5. To review the secondary Operability / Accessibility / Maintainability to the different

areas.

6. To Identify Improvements / Modifications to meet the requirement of the project,

mainly the safety operational aspect.


General

1. All 30 % Model Review comments have been incorporated.

Safety

1. Safety Egress Routing Volume (Previous comments and changed item only).

2. Primary Escape Routes defined and Marked (Previous comments and changed item

only).

3. Secondary Escape Routes defined and Marked. Ensure escape routes are provided

at all area, including internal area of large process block, elevated access platforms.

4. Safety distance between Equipment (Previous comments and changed item only).

5. Location of Life Boats / Muster Areas / Temporary Refuge (Previous comments and

changed item only).

6. Location of the Vents / Exhausts in a Safe Area (Previous comments and changed

item only).

7. Fire hazard Zone / Restricted Area / Impacted Area (Previous comments and

changed item only).

8. Eye Wash, Safety Shower and all Safety (life saving) Equipment Locations.

9. Location and review of adequate and easy Access Ways for Fire Fighting Equipment.

10. Arrangement of the Plant to Optimize Operational Maintenance requirements and

Provide Good Access and Working Room Around all Equipment.



11. Fire water hydrants, monitors, hose reels, cabinets, pumps and deluge valve

locations and orientation to optimise quick access and deployment of equipment.

Structural

1. All Primary and Secondary Steel Framing. (Previous comments and changed Items

only)

2. Intermediate Platform(Previous comments and changed Items only)

3. Main Access Stairs (Previous comments and changed Items only)

4. Architectural Items Including Shelter / Technical Building / Blast Wall. (Previous

comments and changed Items only)

5. Boat Landing Location (Previous comments and changed Items only)

6. Riser / J Tube Locations (Previous comments and changed Items only)

7. Miscellaneous Jacket / riser protection (Previous comments and changed Items only)

8. Access Ladders

9. Miscellaneous Access / Maintenance Platforms

10. Support Structures.

11. Hand Railing.

12. Deck penetration

13. Major and minor pipe racks.

Mechanical

1. Location of all major process and Utility Equipment including HVAC equipment and

ducting. (Previous comments and changed Items only)

2. Mechanical Handling Equipment. (Previous comments and changed Items only)

3. Platform Crane / Davit / Monorail. (Previous comments and changed Items only)

4. Package Unit Location and Orientation. (Previous comments and changed Items

only)

5. Alignment with initial Materials Handling Study.

6. Equipment Withdrawal / Handling Areas (Previous comments and changed Items

only)

7. Primary Laydown areas / Access Hatches. (Previous comments and changed Items

only)

8. Primary Operating Platforms for Valves, Equipment and Maintenance. (Previous

comments and changed Items only)



9. Secondary Operating Platforms for Valves, Equipment and Maintenance

10. Location of all secondary process and utility equipment, HVAC equipment and

Ducting.

11. Secondary mechanical handling items.

12. Laydown area for chemical / catalyst loading requirements.

Piping

1. Frozen primary Piping Routings (Large bore / Flow Lines / remaining stress critical

pipework)

2. Majority of small bore process lines and utility lines including inline instruments and

instrument tap points.

a. All process lines (4 NB and Above)

b. Utility lines (2 NB to 10 NB)

3. Major and General Pipe Supports to assist clash detection routines.

4. The detailing of pipe work will extend to showing all auxiliary Items included in the

P&ID for the specified line sizes.

5. Piping on pipe rack and pipe ways including expansion loop location.


1. Major Electrical Equipment (Previous comments and changed Items only)

2. Preliminary layout of overhead cable tray, LV bus duct, and main cable transit blocks

in each Electrical room.

3. Lighting for all room and for each deck level.

4. Packaged Equipment motors, electrical heater and control panels.

5. Preliminary Main Electrical and Instrument Cable Ladder Routes (Previous comments

and changed Items only)

6. Location and Volume of Electrical and Control Rooms (Previous comments and

changed Items only)

7. Main Cable Tray, ladder Routing

8. Main Junction Boxes.

9. Local Control Panel, Local Junction box and inline mounting instruments.

10. Field instrument with stanchion according to piping instrument tap point.

11. Instrument Stands (check for permanent accessibility of instruments)

12. Lighting



Reserve Volumes

1. Primary and secondary Escape Routes. (Previous comments and changed Items

only)

2. Maintenance Areas. (Previous comments and changed Items only)

3. Access way around all equipment. (Previous comments and changed Items only)

4. Withdrawal Areas. (Previous comments and changed Items only)

5. Flare Radiation Volume. (Previous comments and changed Items only)

6. Future Equipment (Previous comments and changed Items only)

7. Future Pipework (Limited to flow lines and major pipe runs)

Civil

1. Main and secondary access road layout, including road crossing structures and

culvert. (Previous comments and changed Items only)

2. Crane access for both construction and maintenance activities. (Previous comments

and changed Items only)

3. Infrastructure Administration building, Laboratory, Central control room, Electrical

room, Warehouse, Maintenance shop etc.

4. Pipe rack and pipeway layout. (Previous comments and changed Items only)

5. Location of interceptors and effluent treatment facilities. (Previous comments and

changed Items only)

6. Equipments support, foundations and pedestal. (Previous comments and changed

Items only)

7. Underground facilities.

8. Culvert location / area.

9. Storm drains, catch basin, and pit.

10. Trench layout and elevation.

11. Perimeter / Property fence layout.


The Objective of the 90 % Model Review;

1. To ensure final design acceptance by the COMPANY prior to publication of

construction drawings/documentation.

2. To ensure that all areas of Operability and accessibility are accepted by the

COMPANY operations team.



3. To ensure the constructability of all components of the project.

4. To ensure that all the Safety philosophies, safety studies recommendations and

HAZOP requirements have been incorporated prior to publication of construction

drawings/documentation.

5. To ensure that the model reflects project requirements i.e. Exhibit A Scope of Work.


General

1. All 60 % Model Review comments have been incorporated.

Safety

1. Final Safety Egress Routing Volume (Previous comments and changed item only).

2. Final Escape Routes defined and Marked (Previous comments and changed item

only).

3. Final Safety distance between Equipment (Previous comments and changed item

only).

4. Frozen Location of the Flare in a Safe Area (Previous comments and changed item

only).

5. Final Fire hazard Zone / Restricted Area / Impacted Area (Previous comments and

changed item only).

6. Final Eye Wash, Safety Shower and all Safety (life saving) Equipment Locations

(Previous comments and changed item only).

7. Final review of adequate and easy Access Way for Fire Fighting Equipment (Previous

comments and changed item only).

8. Arrangement of the Plant to Optimize Operational Maintenance requirements and

Provide Good Access and Working Room Around all Equipment.

9. Fire and gas detectors locations, orientations and coverage check (Previous

comments and changed item only). Ensure small piping / equipment added during

90% development does not significantly obstruct F&G detector coverage.

10. All fire fighting equipment (Previous comments and changed item only) and

spray/sprinkler nozzle orientation on equipment to ensure full coverage on protected

equipment surface.

Mechanical

1. All process and Utility and HVAC Equipment. (Previous comments and changed

Items only)

2. Alignment with Final Materials Handling Study



3. Mechanical Handling Equipment. (Previous comments and changed Items only)

4. Platform Crane. (Previous comments and changed Items only)

5. The detailing of equipment packages will be in basic block format only and Nozzles of

diameter 2 NB and below will be modelled. Certified Vendor information should have

been available by then for inclusion in modelling

Piping

1. All Process piping as depicted on P&IDs.

2. All Utility piping as depicted on P&IDs.

3. All Pipe Supports.

4. All underground piping

5. All sampling connections, corrosion fittings, vents, drains. The detailing of pipe work

showing all auxiliary items included in the P&ID for the remaining line sizes.


1. Secondary Cable Tray Routing to include up to equipment termination boxes located

in the electrical rooms and on each Deck level.

2. Support for main & secondary cable tray.

3. All Electrical / Instrument Cable Trench

Reserve Volumes

1. Maintenance Areas. (Previous comments and changed Items only)

2. Withdrawal Areas. (Previous comments and changed Items only)

3. Future Equipment (Previous comments and changed Items only)

4. Future Pipe work (Previous comments and changed Items only)

Civil

1. All main road and secondary access road, including road crossing structures, bridge

and culvert.

2. All Infrastructure Buildings, Laboratory, Central control room, Electrical room,

Warehouse, Maintenance shop and Sheds.

3. All pipe rack structures and pipeways.

4. All civil structures Interceptors and effluent treatment facilities.

5. All major pipe supports, equipment supports, foundations and pedestal.

6. All underground facilities.

7. All culverts, storm drains, catch basin and pit.



8. All trench layouts.

9. Perimeter / Property Fence layout.

5.4 RESPONSIBILITIES

The 3D model review shall be facilitated by Contractor. Followings are the list of

responsibilities to be carried out for the review:

Schedule for model reviews Project Manager

Prepare documents for Model Reviews Project Engineer

Distribution of Review Documents, Agenda to the COMPANY

and Contractor Disciplines

Project Manager /

Project Engineer

Organize Model Review Venue Project Engineer

Review Tools and Create Model File PDMS / AutoPLANT

Administrator

Report Status of 3D CAD Model Lead Piping Engineers

Report of Hold Items List (if any) Lead Piping Engineers

Coordination during model review Project Engineer

Prepare and Summarize Action List Report Project Engineer

Review, reconcile and distribute Action List Report Project Manager

Follow up / update Action List Report Project Engineer /

Lead Piping Engineer

Archive PDMS/ AutoPLANT Review Models and Status Files PDMS / AutoPLANT

Administrator

5.5 COMMENT TAGGING

During the review session, all comments requiring resolution will be identified and recorded in

accordance with the checklist, exemplified in Appendix 1. All comments will be downloaded

and re-formatted in MS Excel for status reporting and control. This will be submitted to the

Project Manager for review and distribution to disciplines.

The model will be revised and checked by the responsible discipline and the status of the

action will be advised to the Model Review Coordinator/ Project Engineer for updating the

Action List Log. The Action List Log with filled-in correction and modification items regarding to

comments shall be submitted to COMPANY for approval via Project Engineer/Manager or

Lead Piping Engineer.



6.0 APPENDICES

Appendix 1. 3D Model Review Comments

PTTEP MODEL REVIEW

COMMENT Project Name

Commenting group

Engineer (s) signature (s)

Date P&ID no Sheet of

Notes: 1. Relate to the equipment no or rack Column no. 2. Tick further information is required from commenting

group before making change

Comment no.

Line no. Base no. Location on

model (note 1)

Comment Info.

(note 2)



LAST PAGE INTENTIONALLY BLANK


PEGS User Feedback Form

Doccument number PEGS-0710-ADM-008 Issued by: 0790 Rev: 0-0 Date of Issue: February 2012

PEGS User Feedback Form : 1/2

This section for feedback provider input only

Details of feedback provider

Name: Click here to enter text.

Division/Dept: Click here to enter text.

Location: Click here to enter text.

Telephone: Click here to enter text.

E-mail: Click here to enter text.

Area of Concern: PEGS Content

PEGS Relevance

ISO standard

Other standards

Others: (please specify) Click here to enter text.

Document Title: Click here to enter text. Document I/D: Click here

Feedback details (when referring to documents, please state chapter and page number where appropriate.)

Click here to enter text.

(Please add attachments if required)


PEGS User Feedback Form

Doccument number PEGS-0710-ADM-008 Issued by: 0790 Rev: 0-0 Date of Issue: February 2012

PEGS User Feedback Form : 2/2

This section for PEGS Administrator use only

Date received: Enter a date. Feedback register updated: Enter date.

Received by: Enter text Feedback register updated by: Click here

Form receipt sent: Enter date Feedback Reference # PEGS-FB-00?

Action taken

Click here to enter text. Date By Whom

Click date name

Click here to enter text. Click date name

Further Action

Recommended Action Deadline By Whom

Click here to enter text. Click name

Verification of closure of Feedback

Click here to enter text.

By: Click here Title: Click here Dept.: Click Date: Click

Please send this form to PEGS Administrator: Khun Pornpimol Kongkhan ( [email protected] Ext. 4891)

Back to PEGS Administration DocumentsPEGS-0710-ADM-0081.0 Purpose2.0 Scope3.0 Definitions3.1 Language3.2 Terminology3.3 Common Acronyms

4.0 References4.1 PTTEP Internal References4.2 International Standards4.3 Industry Codes and Standards

5.0 Tools5.1 Support Documents and Drawings5.2 3D Model Check List5.2.1 Safety5.2.2 General Layout and Maintenance5.2.3 Accessibility / Operability / Maintenance5.2.4 Package Units5.2.5 Model Layout5.2.6 Heat Exchangers5.2.7 Fired Heaters5.2.8 Vessels5.2.9 Pumps5.2.10 Compressors5.2.11 Other Mechanical Equipment5.2.12 Piping Layout5.2.13 Instrument5.2.14 Structural Steel5.2.15 PSVs5.2.16 Utilities5.2.17 Civil5.2.18 Storage tanks (Intermediate / Product / Feed stack Tank Farms)5.2.19 Truck loading / unloading station5.2.20 Infrastructure (administration building / laboratory / warehouse / central control room / electrical room / maintenance shop5.2.21 Underground Facilities5.2.22 Miscellaneous

5.3 Model Review5.3.1 Model Review Purpose5.3.2 Model Review Participants5.3.3 Review Milestone Stages5.3.4 Model Review Aspects5.3.5 30 % Model Review5.3.6 60 % Model Review5.3.7 90 % Model Review

5.4 Responsibilities5.5 Comment Tagging

6.0 APPENDICESAppendix 1. 3D Model Review Comments

3d model review checklist

Documents

d model check list

pttep intranet

d model review comments

revision date

pttep internal references

ptt exploration

registry uncontrolled

toc uncontrolled