NES 805 Part 1 Requirements for Mastic and Sealing Thermal Insulation Material

Ministry of Defence Defence Standard 02-805 (NES 805)

Issue 1 Publication Date 01 April 2000

Incorporating NES 805 Category 2

Issue 2 Publication Date April 1989

Requirements For Mastic And SealingThermal Insulation Material

Part 1Mastic And Sealing Products

Vapour Barrier Coating

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) 805 Part 1 Issue 2 dated April 1989.

Ministry of Defence

Naval Engineering Standard

NES 805 Part 1 Issue 2 (Reformatted) April 1989

REQUIREMENTS FOR MASTIC AND SEALINGTHERMAL INSULATION MATERIAL

PART 1

MASTIC AND SEALING PRODUCTSVAPOUR BARRIER COATING

This NES Supersedes

NES 805 PART 1 ISSUE 1

Record of Amendments

AMDT INSERTED BY DATE

1

2

3

4

5

6

7

8

9

10

iNAVAL ENGINEERING STANDARD 805

PART 1

ISSUE 2 (REFORMATTED)

REQUIREMENTS FORMASTIC AND SEALING THERMAL

INSULATION MATERIAL

MASTIC AND SEALING PRODUCTS

VAPOUR BARRIER COATING

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 805Part 1

Issue 2 (Reformatted)

iii

SCOPE

1. The requirements for the supply of vapour barrier coating suitable for use on thermalinsulation in HM Surface Ships and Submarines, where such a coating is specified.

NES 805Part 1Issue 2 (Reformatted)

iv

NES 805Part 1


v

FOREWORD

Sponsorship

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

2. It is to be applied as required to any Ministry of Defence contract for vapour barrier coatingused on thermal insulation in HM Surface Ships and Submarines.

3. This NES comprises:

Requirements for Mastic and Sealing Thermal Insulation MaterialMastic and SealingProducts

Part 1 Vapour Barrier Coating.

Part 2 Flexible Mastic Sealers.

4. If it is found to be technically unsuitable for any particular requirement the Sponsor is to beinformed in writing of the circumstances with a copy to CNA, Section NA 145.

5. Any user of this NES in MOD or industry may propose an amendment to it. Proposals foramendments which are:

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

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

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

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

8. 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 lineinterval.

9. This NES has been reissued as a result of a general review and update of the contents.

Conditions of Release

General

10. 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.

11. 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.


vi

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

MOD Tender or Contract Process

13. 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.

14. 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.

15. 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

16. 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.

17. 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.

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

Health and Safety

Warning

19. 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 805Part 1


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. MATERIAL 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.1 Colours 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3. TESTING 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1 Solids Content 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2 Specific Gravity 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3 Viscosity 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.4 Water Vapour Permeance 3.1. . . . . . . . . . . . . . . . . . . . .3.5 Freedom from Defects 3.1. . . . . . . . . . . . . . . . . . . . . . . .3.6 Water and Oil Penetration 3.1. . . . . . . . . . . . . . . . . . . . .3.7 Steam Test 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.8 Leachable Chloride Content 3.1. . . . . . . . . . . . . . . . . . .3.9 Surface Spread of Flame 3.1. . . . . . . . . . . . . . . . . . . . . .3.10 Smoke Index 3.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.11 Toxicity Index 3.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.12 Oxygen Index 3.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.13 Test Certificates 3.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.14 Rejection 3.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4. PACKAGING AND IDENTIFICATION 4.1. . . . . . . . .4.1 Packaging 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.2 Identification 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

ANNEX C. GLASS CLOTH TEST SPECIMEN C.1. . . . . . . . . . . .FIGURE C.1 TEST SPECIMEN C.1. . . . . . . . . . . . . . .

ANNEX D. FLUID PENETRATION TEST METHOD D.1. . . . . . .

ANNEX E. EFFECT OF STEAM TEST E.1. . . . . . . . . . . . . . . . . . .

ANNEX F. BS 476 PT 7 TEST SPECIMENS F.1. . . . . . . . . . . . . . .

ALPHABETICAL INDEX


viii

NES 805Part 1


1.1

1. TYPE APPROVAL

a. Before a manufacturer may supply this type of material his product is to beaccepted by the Approving Authority as complying with all the requirements ofthis NES. The Approving Authority for this material is the ProcurementExecutive, Ministry of Defence, CNA, Section NA 131.

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

c. Provide test data of the materials performance in accordance with Section 3.

d. Provide samples of the material so that the type approval tests may beundertaken on test samples prepared using normal trade methods.

e. 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.

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

g. 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.

h. If any change ismade in the formulation of the material after initial acceptance,full particulars of the changes are to be supplied to the Approving Authority sothat acceptability of the material can be reconsidered.


1.2

NES 805Part 1


2.1

2. MATERIAL

a. The coating is to be a homopolymer vinyl emulsion; other ingredients andcolouring agents may be added as necessary. Ammonia is not to be used, eitheras a stabilizer or in the manufacture of the raw resins.

2.1 Colours

a. The coating is to be supplied in two colours:

(1) Dark Grey to BS 480000 A 13.

(2) White to BS 4800-00 E 55.

b. The coating is to be used as a three coat system; a first coat of grey followed bytwo successive coats of white.


2.2

NES 805Part 1


3.1

3. TESTING

a. The tests detailed in Clauses 3.1 to 3.3 are to be carried out once for eachproduction batch. For Type Approval the test in Clauses 3.1 to 3.12 are to beundertaken. When a manufacturer submits test data for Type Approval, themethods of test used for determining solids content, specific gravity andviscosity are to be stated.

3.1 Solids Content

a. The solids content expressed as a percentage by weight is to be determined bya test method acceptable to the Approving Authority. A solids content greaterthan 50% is required.

3.2 Specific Gravity

a. The specific gravity is to be determined by a test method acceptable to theApproving Authority. A specific gravity of between 1.25 and 1.40, at atemperature of 25 C, is required.

3.3 Viscosity

a. The viscosity of the coating is to be such that it can be applied by brush. Theviscosity is to be determined by a test method acceptable to the ApprovingAuthority, and is to be declared for Type Approval. The viscosity recorded atsubsequent production tests is not to vary by more than 12.5% from the valuerecorded at Type Approval.

3.4 Water Vapour Permeance

a. The water vapour permeance of the coating is to be determined by the methodin ASTM E96. When tested to Procedure B of this Standard a permeance isrequired of between 0.0513 and 0.0627g/sMN (0.9 to 1.1 perm), for a dry coatingthickness of 0.75mm (3-coat system).

3.5 Freedom from Defects

a. When visually examined, the 3-coat section of a glass cloth specimen, preparedin accordance with Annex C., is to be free of any pinholes.

3.6 Water and Oil Penetration

a. After seven days there is to be no penetration of water, diesel oil or lubricatingoil, when samples are tested in accordance with Annex D.

3.7 Steam Test

a. When a sample is tested against the effects of steam, in accordance with AnnexE., there is to be no evidence of detachment or permanent softening of the film.

3.8 Leachable Chloride Content

a. The leachable chloride content of the cured coating (3-coat system) is not toexceed 50ppmwhen established by potentiometric titration or mercuric nitratevolumetric analysis, from a sample prepared in boiling water.

3.9 Surface Spread of Flame

a. The surface spread of flame is to be determined by the method in BS 476 Part7. Specimens, prepared in accordance with Annex F., are to achieve a Class 1rating.


3.2

3.10 Smoke Index

a. The smoke index of a glass cloth specimen (3-coat sample), prepared inaccordance with Annex C., is to be determined by the test method in NES 711.The level of acceptance is to be an index less than 50 for a coating 0.75mm thick.

3.11 Toxicity Index

a. The toxicity index of a glass cloth specimen (3-coat sample), prepared inaccordance with Annex C., is to be determined by the test method in NES 713.The level of acceptance is an index less than 4 per 100g of cured coating.

3.12 Oxygen Index

a. The oxygen index of a glass cloth specimen (3-coat sample), prepared inaccordance with Annex C., is to be determined by the test method in NES 714.The level of acceptance is an index greater than 35.

3.13 Test Certificates

a. Test certificates giving the results of the tests required in Clauses 3.1 to 3.3 areto be retained for inspection by the Quality Assurance Representative namedin the contract.

3.14 Rejection

a. Should the samples selected fail to meet any of the requirements given inClauses 3.1 to 3.3 two further samples will be allowed. If either of these samplesfails to meet the test requirements the facts are to be reported to the ApprovingAuthority.

NES 805Part 1


4.1

4. PACKAGING AND IDENTIFICATION

4.1 Packaging

a. The material is to be packaged to normal trade standard in 5 litre containers.

4.2 Identification

a. Each container is to bear a label giving the following information:

(1) Description of contents;

(2) Volume of contents;

(3) Contract or order number and date;

(4) Manufacturers batch number;

(5) Manufacturers identification (eg firms name);

(6) NATO stock number.


4.2

NES 805Part 1


A.1 ANNEX A.

ANNEX A.

RELATED DOCUMENTS

A.1 Reference is made to:

Referred toin Clause

BS 476 Pt 7 Fire tests on building material and structuresPt 7 Method for classification of the surface spreadof flame of products

3.9

BS 4800 Paint colours for building purposes 2.1

NES 711 Determination of the Smoke Index of the Productsof Combustion from Small Specimens of Materials

3.10

NES 713 Determination of the Toxicity Index of theProducts of Combustion from Small Specimens ofMaterials

3.11

NES 714 Determination of the Oxygen Index of SmallSpecimens of Materials

3.12

ASTM E96 Standard Test Methods for Water VapourTransmission of Materials

3.4


A.2ANNEX A.

NES 805Part 1


B.1 ANNEX B.

ANNEX B.

DEFINITIONS AND ABBREVIATIONS

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


B.2ANNEX B.

NES 805Part 1


C.1 ANNEX C.

ANNEX C.

GLASS CLOTH TEST SPECIMEN

C.1 A one metre square section of glass cloth, NS Cat No 0414/52724, is to be preparedas shown in FIGURE C.1. The vapour barrier coating is to be brush applied with thecloth in the horizontal plane, allowing 24 hours drying time between coats. The rateof application is to be such that the dry coating in the 3-coat section is to have aminimum thickness of 0.75mm.

FIGURE C.1 TEST SPECIMEN


C.2ANNEX C.

NES 805Part 1


D.1 ANNEX D.

ANNEX D.

FLUID PENETRATION TEST METHOD

D.1 Three pieces (A, B and C), 100mm 100mm, are to be cut from the 3-coat section ofthe glass cloth test specimen, see Annex C.; each piece is to be formed into a shallowcone and placed over a suitable beaker. Into the formed depression the followingliquids are to be poured, one for each sample:

Sample A 10ml Distilled water

Sample B 10ml Diesel fuel oil

Sample C 10ml Lubricating oil OEP 69

The samples are to be left for 7 days; the water and diesel specimens are to be atambient temperature, the lubricating oil is to be at 60 C. The specimens are to beexamined daily; if penetration is noted within 7 days the test is to be terminated andfailure recorded.


D.2ANNEX D.

NES 805Part 1


E.1 ANNEX E.

ANNEX E.

EFFECT OF STEAM TEST

E.1 A 75mm 75mm piece cut from the 3-coat section of the glass cloth test specimenis to be subjected to steam from a1mmdiameter jet situated at a distance of 5mm fromthe surface under test. The steam is to be produced at atmospheric pressure. Thespecimen is to be positioned vertically, so that the dripping condensate can becollected. When 50ml of condensate is obtained the test piece is to be removed andexamined whilst still hot for any evidence of detachment or softening of the coating;when cool the condition of the coating is to be examined again.


E.2ANNEX E.

NES 805Part 1


F.1 ANNEX F.

ANNEX F.

BS 476 Pt 7 TEST SPECIMENS

F.1 Specimens are to be prepared to the dimensions and the number off required for theBritish Standard test. Each specimen is to have a substrate of 19mm thick cork slab,NS Cat No 0414/9241884, attached to an aluminium backing plate with an epoxyadhesive. The sealer is to be applied in the following manner to the cork face of thespecimen: brush apply a first coat of barrier coating (grey) and, whilst still wet, embeda cotton calico cloth, NS Cat No 0330/1389248, into the coating and smooth toremove entrapped air; after drying for 24 hours apply a second coat of barrier coating(white), allow to dry a further 24 hours and apply a third coat (white). The sealer andcotton calico cloth are to extend over all edges of the cork slab a minimum of 10mm.The rate of application is to be such that the dry coating is to have a minimumthickness of 0.75mm.


F.2ANNEX F.

NES 805Part 1


INDEXINDEX.1

ALPHABETICAL INDEX

AApproving Authority, 1.1

CChemical Constituents, 1.1

Colours, 2.1

FFormulation, changes in, 1.1

Freedom from Defects, 3.1

HHealth and Safety Informationdisclosure of information, 1.1safe handling, recommendations, 1.1

IIdentification, 4.1

LLeachable Chloride Content, 3.1

MMaterial, 2.1

OOxygen Index, 3.2

PPackaging, 4.1

QQuality Assurance Representative, 3.2

RRejection, 3.2

Related Documents, A.1


INDEX INDEX.2

SScope, iii

Smoke Index, 3.2

Solids Content, 3.1

Specific Gravity, 3.1

Steam Test, 3.1

Surface Spread of Flame, 3.1

TTest Certificates, 3.2

Testing, 3.1

Toxic Substances, 1.1

Toxicity Index, 3.2

Type Approval, 1.1

VViscosity, 3.1

WWater and Oil Penetration, 3.1

Water Vapour Permeance, 3.1

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

DStan Helpdesk

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/69/02/805.

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 ReleaseGeneralMOD Tender or Contract Process

Related DocumentsHealth and SafetyWarning

1. TYPE APPROVAL2. MATERIAL2.1 Colours

3. TESTING3.1 Solids Content3.2 Specific Gravity3.3 Viscosity3.4 Water Vapour Permeance3.5 Freedom from Defects3.6 Water and Oil Penetration3.7 Steam Test3.8 Leachable Chloride Content3.9 Surface Spread of Flame3.10 Smoke Index3.11 Toxicity Index3.12 Oxygen Index3.13 Test Certificates3.14 Rejection

4. PACKAGING AND IDENTIFICATION4.1 Packaging4.2 Identification

ANNEX A. RELATED DOCUMENTSANNEX B. DEFINITIONS AND ABBREVIATIONSANNEX C. GLASS CLOTH TEST SPECIMENFIGURE C.1 TEST SPECIMEN

ANNEX D. FLUID PENETRATION TEST METHODANNEX E. EFFECT OF STEAM TESTANNEX F. BS 476 Pt 7 TEST SPECIMENSALPHABETICAL INDEX

NES 805 Part 1 Requirements for Mastic and Sealing Thermal Insulation Material

Documents

Transcript of NES 805 Part 1 Requirements for Mastic and Sealing Thermal Insulation Material