Ministry of Defence

Defence Standard

13-81/lssue 2 23 MARCH 1990

CALCIUM SILICIDE

SIZES 100, 200, 240

This Defence Standardsupersedes Def Stan 13-81

Issue 1 dated1 May 1975

DEF STAN 13-81/2

AMD NO

AMENDMENTS ISSUED SINCE PUBLICATION

DATE OF TEXT AFFECTEDISSUE

SIGNATURE &DATE

Revision Note

This Standard has been revised without technical change to take account ofrevised format of Def Stan 00-00 Part 2.

Historical Record

CS 5113A dated 25 January 1961Def Stan 13-81/1 dated 1 May 1975

DEF STAN 13-81/2

CALCIUM SILICIDESIZES 100, 200, 240

PREFACE

This Defence Standard supersedesDef Stan 13-81/1 dated 1 May 1975

i This Defence Standard specifies the requirements for Calcium SilicideSizes 100, 200, 240 for Ministry of Defence use. It has been prepared bythe Explosives Subcommittee of the Defence Engineering and EquipmentStandardization Committee.

ii This Standard has been agreed by the authorities concerned with its useand shall be incorporated whenever relevant in all future designs,contracts, orders etc and whenever practicable by amendment to those alreadyin existence. If any difficulty arises which prevents application of theDefence Standard, the Directorate of Standardization shall be informed sothat a remedy may be sought.

iii Any enquiries regarding this Standard in relation to an invitation totender or a contract in which it is invoked are to be addressed to theresponsible technical or supervising authority named in the invitation totender or contract.

iv This Standard has been devised for the use of the Crown and of itscontractors in the execution of contracts for the Crown and, subject to theUnfair Contract Terms Act 1977, the Crown will not be liable in any waywhatever (including but without limitation negligence on the part of theCrown its servants or agents) where the Standard is used for otherpurposes.

1

DEF STAN 13-81/2

CONTENTS

Preface

123456789

ScopeWARNINGRelated DocumentsDescriptionInformation to be Supplied by the PurchaserTest RequirementsMethods of TestQuality AssuranceContainers

PAGE

1

333444555

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DEF STAN 13-81/2

CALCIUM SILICIDESIZES 100, 200, 240

1 Scope

This Standard specifies the requirements for calcium silicide for use in themanufacture of certain initiatory, pyrotechnic and smoke compositions.

2 WARNING

This Standard calls for the useinjurious to health if adequateto technical suitability and inuser from statutory obligationsof manufacture or use.

3 Related Documents

of substances and/or procedures that may beprecautions are not taken. It refers onlyno way absolves either the supplier or therelating to health and safety at any stage

3.1 The following documents and publications are referred to in thisStandard:

BS 410 Specification for Test SievesLaboratory Method M805 Examination of Calcium Silicide

3.2 Reference in this Standard to any related document means in anyinvitation to tender or contract the edition and all amendments current atthe date of such tender or contract unless a specific edition is indicated.

3.3 Related documents can be obtained from:

DOCUMENT SOURCE

British Standard BSISales DepartmentLinford WoodMILTON KEYNESMK14 6LE

Laboratory Method Directorate of Quality Assurance/Technical Support

Standardization SectionRoyal Arsenal EastLONDONSE18 6TD

3

DEF STAN 13-81/2

4 Description

The material shall consist essentially of calcium silicide in the form of afine powder. It shall be free from grit, foreign matter and visibleimpurities.

5 Information to be Supplied by the Purchaser

The purchaser shall state clearly in the contract or order the size (eg 100)of the material required and the quantity required for each container.

6 Test Requirements

Samples taken from any portion of the supply shall be in accordance withclause 4 and, when tested by the method specified, shall comply with thefollowing requirements:

ITEMNO.

1 )))))))))))))

2

3

4

5

6

) M805

7

8

))))))))))))))

9

10

PROPERTY

Volatile matter, %

Size 100

Size 200

Size 240

Total silicon, calculated as Si, %

Total calcium, calculated as Ca, %

Total iron, calculated as Fe, %

Free metallic iron, calculated as Fe, %

Total silicon, calcium and iron,calculated as Si, Ca and Fe, %

Alkalinity, calculated as CaO, %

Carbides and phosphides, expressed asmillilitres of decimolar alkali, cm3/10 g

Free carbon, %

Apparent density, g/cm3

REQUIREMENT

0.1 max

0.2 max

0.2 max

60 min

20 min

7 max

0.2 max

92 min

2 max

2 max

3 max

1.20-1.50

METHODOF TEST

Continued on page 5

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DEF STAN 13-81/2

6 (Contd)

ITEMNO.

PROPERTY

11 Sieving: )

Size 100: Retained on a 150 µm sieve

Size 200: Retained on a 150 µm sieveRetained on a 75 µm sieve, %

)Size 240: Retained on a 150 µm sieve

Retained on a 63 µm sieve, %

REQUIREMENT

nil

nil2 max

nil35 max

)

Particulars of test sieves may be found in BS 410.

METHODOF TEST

)

)))) M805)

))

7 Methods of Test

All enquiries concerning methods of test or other technical matters shouldbe referred to the Directorate of Quality Assurance/Technical Support,Materials Centre, Royal Arsenal East, London SE18 6TD.

8 Quality Assurance

8.1 The Quality Assurance Authority reserves the right to sample and testthe material and/or its ingredients at any time during manufacture.

8.2 If any sample taken from the consignment be found not to comply withthe requirements of this Standard, the whole consignment may be rejected.

9 Containers

9.1 Unless the form of packaging is specified in the contract or order thematerial shall be supplied in sound clean and dry watertight containerssuitable for the product. The use of contaminated containers will renderthe whole consignment liable to rejection. After filling, each containershall be securely closed.

9.2 Each container shall be legibly and durably marked according tostatutory requirements and with at least the following details:

Designation viz: Calcium Silicide (size as appropriate)Defence Standard number viz: Def Stan 13-81/2Contract or order numberDistinctive lot and/or batch numberQuantity of contentsDate of manufactureManufacturer’sAny additional

initials or recognized trade markmarkings called for in the contract or order

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DEF STAN 13-81/2

oc Crown Copyright 1990

Published by and obtainable from:Ministry of DefenceDirectorate of StandardizationKentigern House65 Brown StreetGLASGOW G2 8EX

Tel No: 041-248 7890

This Standard may be fully reproducedexcept for sale purposes. Thefollowing conditions must be observed:

1 The Royal Coat of Arms and thepublishing imprint are to beomitted.

2 The following statement is to beinserted on the cover:‘Crown Copyright. Reprinted by(name of organization) with thepermission of Her Majesty’sStationery Office.’

Requests for commercial reproductionshould be addressed to MOD Stan 1,Kentigern House, 65 Brown Street,GLASGOW G2 8EX

The following Defence Standard file reference relates to the work on thisStandard - D/D Stan/306/17/32 (Stan 5b).

Contract Requirements

When Defence Standards are incorporated into contracts users are responsiblefor their correct application and for complying with contract requirements.

Revision of Defence Standards

Defence Standards are revised when necessary by the issue either ofamendments or of revised editions. It is important that users of DefenceStandards should ascertain that they are in possession of the latestamendments or editions. Information on all Defence Standards is containedin Def Stan 00-00 (Part 3) Section 4, Index of Standards for DefenceProcurement - Defence Standards Index published annually and supplementedperiodically by Standards in Defence News. Any person who, when making useof a Defence Standard encounters an inaccuracy or ambiguity is requested tonotify the Directorate of Standardization without delay in order that thematter may be investigated and appropriate action taken.

BOX 7, DISK 4