NES 806 Requirements for Ceramic Thermal Insulation Material_Ceramic Products, Ceramic Rope and Ceramic Blanket

Ministry of Defence Defence Standard 02-806 (NES 806)

Issue 1 Publication Date 01 April 2000

Incorporating NES 806 Category 2

Issue 2 Publication Date April 1989

Requirements For Ceramic ThermalInsulation Material

Ceramic Products, Ceramic RopeAnd Ceramic Blanket

DStanDStan 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) 806 Issue 2 dated April 1989.

Ministry of Defence

Naval Engineering Standard

NES 806 Issue 2 (Reformatted) April 1989

REQUIREMENTS FOR CERAMIC THERMALINSULATION MATERIAL

CERAMIC PRODUCTSCERAMIC ROPE AND CERAMIC BLANKET

This NES Supersedes

NES 806 ISSUE 1

Record of Amendments

AMDT INSERTED BY DATE

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iNAVAL ENGINEERING STANDARD 806

ISSUE 2 (REFORMATTED)

REQUIREMENTS FOR CERAMIC THERMAL INSULATION MATERIAL

CERAMIC PRODUCTS

CERAMIC ROPE AND CERAMIC BLANKET

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 DefenceFoxhill, Bath BA1 5AB

NES 806Issue 2 (Reformatted)

iii

SCOPE

1. The technical requirements for the production of ceramic rope and ceramic blanket forthermal insulation at temperatures up to 1000 C for use in HM Surface Ships andSubmarines.


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v

FOREWORD

Sponsorship

1. ThisNaval Engineering Standard (NES) is sponsored by theProcurement Executive, Ministryof Defence, Sea Systems.

2. It is to be applied as required by any Ministry of Defence contract for ceramic rope insulationmaterial and ceramic blanket insulation material, both for use at temperatures up to 1000 Cin HM Surface Ships and Submarines.

3. This NES comprises:

(a) Requirements for Ceramic Thermal Insulation MaterialCeramic Products

(b) Ceramic Rope and Ceramic Blanket.

4. If it is found to be unsuitable for any particular requirement the MOD(PE) is to be informedin writing of the circumstances.

5. Any user of this NES either within MOD or in industry may propose an amendment to it.Proposals for amendments that are not directly applicable to a particular contract are to bemade to the MOD and those directly applicable to a particular contract are to be dealt withusing existing procedures or as specified in the contract.

6. No alteration is to be made to this NES except by the issue of an authorized amendment.

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

8. Any significant amendments that may be made to this NES at a later date will be indicatedby a vertical side line. Deletions will be indicated by 000 appearing at the end of the lineinterval.

9. Extracts from British Standards within this NES have been included with the permission ofthe British Standards Institution.

10. This NES has been reissued because of additions or amendments to the following: Clauses 1.,A., 1.a., 1.c., 1.d., 1.e., 1.f., 1.g., 2.1.a., 3.1.a., 4.1.a., 4.2.a., 4.2.c., 5.2.a., 5.2.b., 5.3.1.a., 5.3.2.a.,5.3.3.a., 6.1.a. and 6.2.a.

Conditions of Release

General

11. 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.

12. 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.


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

MOD Tender or Contract Process

14. 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.

15. 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.

16. 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

17. 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, Llannelli,Dyfed SA14 8YP

(d) Other documents Tender or Contract Sponsor to advise.

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

18. 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.

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

Health and Safety

Warning

20. 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.

NES 806Part 2 (Reformatted)

vii

CONTENTSPage No

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

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

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

General v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MOD Tender or Contract Process vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Related Documents vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Health and Safety vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

CONTENTS vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 1. TYPE APPROVAL 1.1. . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2. MATERIALS 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.1 Ceramic Rope 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2 Ceramic Blanket 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3. MANUFACTURE 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1 Ceramic Rope 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2 Ceramic Blanket 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4. DIMENSIONS AND TOLERANCES 4.1. . . . . . . . . . .4.1 Ceramic Rope 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.2 Ceramic Blanket 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 5. TESTING 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.1 Ceramic Rope 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.2 Ceramic Blanket 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.3 Fire TestsCeramic Products 5.1. . . . . . . . . . . . . . . . . .5.3.1 Oxygen Index 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.3.2 Smoke Index 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.3.3 Toxicity Index 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.3.4 Test Certificates 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.3.5 Rejection 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 6. PACKAGING AND IDENTIFICATION 6.1. . . . . . . . .6.1 Packaging 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.2 Identification 6.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

ALPHABETICAL INDEX

NES 806Part 2 (Reformatted)

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1.1

1. TYPE APPROVAL

a. Before a manufacturer may supply this type of material the products must beaccepted by the Approving Authority as complying with the requirements ofthis NES. The Approving Authority for this material is the ProcurementExecutive, Ministry of Defence, CNA, Section NA131.

b. To obtain type approval the manufacturer must comply with Clauses 1.c., 1.d.and 1.e.

c. Samples and test data of the material the manufacturer proposes to supply areto be provided. Test data are to contain results of all the tests required bySection 5. of this NES.

d. Before a manufacturer is accepted as a supplier of material to this NES he is tosupply to the Approving Authority or to the Ministrys adviser on occupationalhygiene, full particulars of the chemical constituents of the finished materialtogether with any other information necessary to enable an assessment of theoccupational hazard to be made. For fibrous components, information on thefibre characteristics is also to be supplied. When thematerial is intended for usein HM Submarines additional information will be sought to enableconsideration to be given to any harmful effect the material may have on theclosed environment of the submarine. Any such information will be treatedstrictly in confidence.

e. Recommendations for the safe handling of the material are to be provided.

f. In selecting materials or substances to meet this NES, the manufacturer is totake into account their relative toxicity or health hazard. Preference will begiven by CNA to those materials which, while meeting the technicalrequirements of this NES, create the least hazard in their storage, handling,application, removal and disposal.

g. If any change ismade in the formulation or make-up of thematerial after initialacceptance, full particulars of the changes are to be supplied to the ApprovingAuthority so that acceptability of the material can be reconsidered.


1.2


2.1

2. MATERIALS

2.1 Ceramic Rope

a. The rope core is to be formed from ceramic (alumina-silica) fibres. It is to be freefrom any binding agent which, on heating, could release fumes which areharmful to health. A ceramic (alumina-silica) fibre/nickel chrome wire yarn isto enclose the ceramic fibre. A small amount of halogen-free organic binder maybe used in the manufacture of the yarn.

2.2 Ceramic Blanket

a. The blanket is to be formed from ceramic (alumina-silica) fibres. It is to be freefrom any organic binders.


2.2


3.1

3. MANUFACTURE

3.1 Ceramic Rope

a. The rope is to be round in section and enclosed in a braided cover of spunceramic fibre/nickel chrome wire yarn sufficient to retain the fibres. Thedistance between the retaining yarns is to be a minimum 4mm and maximum10 mm as measured along the major axis of the rope.

3.2 Ceramic Blanket

a. The ceramic fibres are to be formed into mats. The mats are then to bemechanically bonded to give a needled blanket.


3.2


4.1

4. DIMENSIONS AND TOLERANCES

4.1 Ceramic Rope

a. The nominal diameter of the rope is to be 30mm. The average of two diametersmeasured at right angles and without compressing the rope, is not to differ bymore than 10% of the nominal diameter. Where the braiding is joined it is notto reduce the nominal diameter of the rope.

b. The length of a coil is not to be less than 25m and not more than 26m.

c. The weight of a coil is to be 4.75kg minimum.

4.2 Ceramic Blanket

a. The nominal thickness of the blanket when measured without compression isto be 25mm. A tolerance of 10% will be permitted.

b. The width of the blanket is to be 610mm. A tolerance of 10mm will bepermitted.

c. The length of the blanket is to be 7.5m 200mm.


4.2


5.1

5. TESTING

5.1 Ceramic Rope

a. The weight of the coil is to be checked once for every ten coils manufactured.For Type Approval the tests in Clauses 5.3.1.a., 5.3.2.a. and 5.3.3.a. are to beundertaken.

5.2 Ceramic Blanket

a. The test detailed in Clause 5.2.b. is to be undertaken once for each order orproduction batch. For Type Approval the tests in Clauses 5.2.c., 5.3.1.a., 5.3.2.a.and 5.3.3.a. are to be undertaken.

b. The density is to be 96kg/m3 with a tolerance of +18% and 10% when testedto BS 2972 Section 3.

c. The thermal conductivity is to be a maximum of 0.120 W/(mK) at a meantemperature of 500 C when tested in accordance with BS 1902, Part 1A.

5.3 Fire TestsCeramic Products

5.3.1 Oxygen Index

a. The oxygen index of a sample of the finished material is to be determined by thetest method in NES 714. The level of acceptance requires an index greater than30.

5.3.2 Smoke Index

a. The smoke index of a sample of the finished material is to be determined by thetest method in NES 711. The level of acceptance requires an index less than 50.

5.3.3 Toxicity Index

a. The toxicity index of a sample of the finished material is to be determined bythe test method inNES 713. The level of acceptance requires an index less than5. Halogenated materials are not to be included in the material composition.

5.3.4 Test Certificates

a. Test certificates giving the results of the tests required in Clauses 5.1.a. and5.2.b. are to be retained for inspection by the Quality Assurance Representativenamed in the contract.

5.3.5 Rejection

a. Should samples selected fail to meet any of the test requirements given inClauses 5.1.a. and 5.2.b. two further samples will be allowed if themanufacturerso desires. If either of these samples fail to meet any of the test requirementsthe facts are to be reported to the Approving Authority.


5.2


6.1

6. PACKAGING AND IDENTIFICATION

6.1 Packaging

a. Normal trade packaging will be acceptable, except for halogenated materials,such as PVC film.

6.2 Identification

a. Each package is to bear a label, clearly visible, giving the following information:

1. Description of contents.

2. Dimensions of contents.

3. Contract or order number and date.

4. Manufacturers batch number.

5. Manufacturers identification, (eg firms name).

6. NATO stock number.


6.2


A.1 ANNEX A.

ANNEX A.

A. RELATED DOCUMENTS

a. Reference is made to:

Referred to inClause

BS 1902 Pt 1A Methods of testing refractory materials.Pt 1A. Sampling and physical tests.

5.1.a.

BS 2972 Methods of test for inorganic thermalinsulating materials

5.2.b.

NES 711 Determination of the Smoke Index of theProducts of Combustion from SmallSpecimens of Materials.

5.3.2.a.

NES 713 Determination of the Toxicity Index of theProducts of Combustion from SmallSpecimens of Materials.

5.3.3.a.

NES 714 Determination of the Oxygen Index ofSmall Specimens of Materials.

5.3.1.a.


A.2ANNEX A.


B.1 ANNEX B.

ANNEX B.

B. DEFINITIONS AND ABBREVIATIONS

a. There are no Definitions and Abbreviations for this NES.


B.2ANNEX B.


INDEXINDEX.1

ALPHABETICAL INDEX

AApproval Authority, 1.1

DDimensions, 4.1

FFormulation changes, 1.1

HHandling, safe, 1.1

IIdentification, 6.1

MManufacture, 3.1

Material, 2.1

OOxygen Index, 5.1

PPackaging, 6.1

QQuality Assurance Representative, 5.1

RRejection, 5.1

SSamples, 1.1

Smoke Index, 5.1


INDEX INDEX.2

TTest Data, 1.1

Testing, 5.1

Tolerances, 4.1

Toxic Hazard, 1.1

Toxicity Index, 5.1

Type Approval, 1.1

Inside Rear Cover

Crown Copyright 2000

Copying Only as Agreed with DStan

Defence Standards are Published by and Obtainable from:

Defence Procurement AgencyAn Executive Agency of The Ministry of Defence

Directorate of StandardizationKentigern House65 Brown Street

GLASGOW G2 8EX

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Internet e-mail [email protected]

File Reference

The DStan file reference relating to work on this standard is D/DStan/69/02/806.

Contract Requirements

When Defence Standards are incorporated into contracts users are responsible for their correctapplication and for complying with contractual and statutory requirements. Compliance witha Defence Standard does not in itself confer immunity from legal obligations.

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.

CONTENTSTITLE PAGESCOPEFOREWORDSponsorshipConditions of ReleaseGeneral

MOD Tender or Contract ProcessRelated DocumentsHealth and SafetyWarning

1. TYPE APPROVAL2. MATERIALS2.1 Ceramic Rope2.2 Ceramic Blanket

3. MANUFACTURE3.1 Ceramic Rope3.2 Ceramic Blanket

4. DIMENSIONS AND TOLERANCES4.1 Ceramic Rope4.2 Ceramic Blanket

5. TESTING5.1 Ceramic Rope5.2 Ceramic Blanket5.3 Fire TestsCeramic Products5.3.1 Oxygen Index5.3.2 Smoke Index5.3.3 Toxicity Index5.3.4 Test Certificates5.3.5 Rejection

6. PACKAGING AND IDENTIFICATION6.1 Packaging6.2 Identification

ANNEX A. RELATED DOCUMENTSANNEX B. DEFINITIONS AND ABBREVIATIONSALPHABETICAL INDEX