NES 802 Part 7 Requirements for Acoustic and Thermal Insulation Material

Ministry of Defence Defence Standard 02-802 (NES 802)

Issue 1 Publication Date 01 April 2000

Incorporating NES 802 Category 2

Issue 1 Publication Date August 1989

Requirements For Acoustic AndThermal Insulation Material

Part 7Mineral Wool Products

Loose Rock Wool

DStan

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

AMENDMENT RECORD

Amd No Date Text Affected Signature and Date

REVISION NOTE

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

HISTORICAL RECORD

This standard supersedes the following:

Naval Engineering Standard (NES) 802 Part 7 Issue 1 dated August 1989.

Ministry of Defence

Naval Engineering Standard

NES 802 Part 7 Issue 1 (Reformatted) August 1989

REQUIREMENTS FOR ACOUSTICAL ANDTHERMAL INSULATION MATERIAL

PART 7

MINERAL WOOL PRODUCTS

This NES Supersedes

Record of Amendments

AMDT INSERTED BY DATE

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2

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5

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NAVAL ENGINEERING STANDARD 802

PART 7

ISSUE 1 (REFORMATTED)

REQUIREMENTS FOR ACOUSTIC AND THERMAL INSULATION MATERIAL

MINERAL WOOL PRODUCTS

LOOSE ROCK WOOL

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

ii

NES 802Part 7

Issue 1 (Reformatted)

iii

SCOPE

1. The requirements for the production of loose rock wool for use as thermal/acoustic insulationin HM Surface Ships and Submarines.

NES 802Part 7Issue 1 (Reformatted)

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NES 802Part 7


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 to any Procurement Executive, Ministry of Defence, contract forthe production of loose rock wool for use as thermal/acoustic insulation in HM Surface Shipsand Submarines.

3. This NES comprises: Requirements for Acoustic and Thermal Insulation Material—MineralWool Products.

a Part 1—Mineral Wool Marine Board.

b Part 2—Mineral Wool Acoustic Absorption Liner.

c Part 3—Rock Wool Fire Protection Slabs.

d Part 4—Rock Wool Half Pipe Sections.

e Part 5—Mineral Wool Slabs, 40kg/m3.

f Part 6—Rock Wool Mattresses for Gas Turbine Uptakes.

g Part 7—Loose Rock Wool.

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 by 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.


vi

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.

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.

NES 802Part 7


vii

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.


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NES 802Part 7


ix

CONTENTSPage No

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

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

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

General vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MOD Tender or Contract Process vi. . . . . . . . . . . . . . . . . . . . . . . . . .

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

Warning vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

SECTION 2. MATERIAL 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3. MANUFACTURE 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4. TESTING 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.1 Alkalinity 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.2 Alkalinity, Method of Determination 4.1. . . . . . . . . . . .4.3 Shot Content 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.4 Thermal Conductivity (Lambda Value) 4.1. . . . . . . . . .4.5 Moisture Content 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .4.6 Fire Classification 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .4.7 Test Certificates 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.8 Rejection 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 5. PACKAGING AND IDENTIFICATION 5.1. . . . . . . . .5.1 Packaging 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.2 Identification 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

ALPHABETICAL INDEX


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NES 802Part 7


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 4. 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 the Ministry’s 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 bemade. For fibrous (wool) components, information onthe fibre characteristics is also to be supplied. When thematerial is intended foruse in 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 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 802Part 7

Issue 1 (Refomatted)

2.1

2. MATERIAL

a. The material is to consist of man-made basalt rock wool able to attain aminimum Limiting Temperature of 750° C. Corrosivity towards carbon andstainless steels is to be minimal, in particular by maintaining chloride contentat the lowest achievable level.


2.2

NES 802Part 7


3.1

3. MANUFACTURE

a. The material is to be prepared as an amorphous mass of loose rock wool.

NES 802Part 7Issue 1 (Refomatted)

3.2

NES 802Part 7


4.1

4. TESTING

a. The tests detailed in Clauses 4.1.a. to 4.3.a. inclusive are to be carried out oncefor each order or production batch. For Type Approval the tests in Clauses 4.1.a.to 4.6.a. inclusive, are to be carried out.

4.1 Alkalinity

a. The alkalinity of the wool is not to exceed 1% calculated as Na2O whendetermined by the method given in Clause 4.2.a.

4.2 Alkalinity, Method of Determination

a. Weigh, to the nearest 0.01g, approximately 5g of representative sample andplace in a 500ml heat resistant Erlenmeyer flask. Add 5ml of 95% ethanol and400ml of water complying with BS 3978. Boil under reflux for 4 hours. Filterthrough a Buchner funnel fitted with aWhatman No. 41 paper. Rinse the flaskand sample with three separate 25ml portions of hot water complying with BS3978, adding the washings to the filtrate. Titrate immediately with 0.02Nsulphuric acid using phenol red as indicator (T1). Carry out a blankdetermination (T2). Percentage alkalinity (as Na2O) = 0.0124 (T1 − T2).

4.3 Shot Content

a. The wool is to be essentially free of shot or other inclusions when tested inaccordance with BS 2972, Section 14, Clauses 51−53.

4.4 Thermal Conductivity (Lambda Value)

a. When tested in accordance with BS 874, the wool is to have a thermalconductivity of not more than 0.037W/(m°K) at a mean temperature of 50° Cand density of 100kg/m3.

4.5 Moisture Content

a. When conditioned at high humidity in accordance with BS 2972, Section 10,Clause 40.4, the moisture content of the wool shall not exceed 5% by mass.

4.6 Fire Classification

a. The wool shall be non-combustible when tested in accordance withBS 476, Part4.

4.7 Test Certificates

a. Test certificates giving the results of the tests required in Clauses 4.1.a. to 4.3.a.inclusive are to be retained for inspection by the Quality AssuranceRepresentative named in the contract.

4.8 Rejection

a. Should the samples selected fail to meet any of the test requirements given inClauses 4.1.a. to 4.6.a. inclusive, two further samples will be allowed. If eitherof these samples fails to meet the test requirements the facts are to be reportedto the Approving Authority.


4.2

NES 802Part 7


5.1

5. PACKAGING AND IDENTIFICATION

5.1 Packaging

a. The loose wool is to be packed in fire-retardant paper or cardboard wrappingand each package is to be marked ‘FIRE-RETARDANT WRAPPING’.

b. The nett weight is to be 12.5kg per pack.

5.2 Identification

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

a. Description of contents

b. Weight of contents

c. Contract or order number and date

d. Manufacturer’s batch number

e. Manufacturer’s identification (e.g. firm’s name)

f. NATO stock number (when appropriate)


5.2

NES 802Part 7


A.1 ANNEX A.

ANNEX A.

RELATED DOCUMENTS

A.1 Reference is made to:

Referred to inClause

BS 476 Pt 4 Fire tests on building materials and structuresPt 4 Non-combustibility test for materials.

4.6.a.

BS 874 Methods for determining thermal insulatingproperties with definitions of thermalinsulating terms.

4.4.a.

BS 2972 Methods of test for inorganic thermalinsulating materials.

4.3.a., 4.5.

BS 3978 Water for laboratory use 4.2.a.


A.2ANNEX A.

NES 802Part 7


B.1 ANNEX B.

ANNEX B.

DEFINITIONS AND ABBREVIATIONS

B.1 For the purpose of this NES the following definitions apply:

Rock wool man-made rock wool.

Limiting temperature the maximum temperature at which the insulationmaintains its general form and does not suffer visibledeterioration.

Corrosivity The tendency of a material to initiate or enhance thecorrosion of another material (especially metal)brought into physical or electrical contact with it.

Corrosion The deterioration of a material, usually man-made,by reaction with its environment.


B.2ANNEX B.

NES 802Part 7


INDEXINDEX.1

ALPHABETICAL INDEX

AAlkalinity, 4.1

Alkalinity, method of determination, 4.1

Approving authority, 1.1

CChemical constituents, 1.1

Corrosivity, 2.1

FFibrous materials, 1.1

Fire classification, 4.1

Formulation, change in, 1.1

HHazards, assessment, 1.1

IIdentification, 5.1

LLimiting temperature, 2.1

MManufacture, 3.1

Moisture content, 4.1

PPackaging, 5.1

QQuality Assurance Representative, 4.1

RRejection, 4.1


INDEX INDEX.2

SSafe handling, 1.1

Samples, 1.1

Scope, iii

Shot content, 4.1

Stainless steel, 2.1

TTest certificates, 4.1

Test data, 1.1

Testing, 4.1

Thermal conductivity, 4.1

Toxc hazard, 1.1

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

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/69/02/802.

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.

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