NES 737

Ministry of Defence Defence Standard 02-737 (NES 737)

Issue 1 Publication Date 01 April 2000

Incorporating NES 737 Category 2

Issue 2 Publication Date June 1987

Preservation And Painting OfMechanical Machinery Items

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) 737 Issue 2 dated June 1987.

Ministry of Defence

Naval Engineering Standard

NES 737 Issue 2 (Reformatted) June 1987

PRESERVATION AND PAINTINGOF

MECHANICAL MACHINERY ITEMS

This NES Supersedes

NES 737 ISSUE 1

Record of Amendments

AMDT INSERTED BY DATE

1 Incorporated

2

3

4

5

6

7

8

9

10

i

NAVAL ENGINEERING STANDARD 737

ISSUE 2 (REFORMATTED)

PRESERVATION AND PAINTING

OF

MECHANICAL MACHINERY ITEMS

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 737Issue 2 (Reformatted)

iii

SCOPE

1. This NES gives the requirements for the preservation and painting of mechanical machineryitems except when they are exempt in accordance with Scope 2.

2. Commercial treatments will be accepted whenever the standards of preparation and paintingare considered to be adequate for the particular items in their normal ship environments andthe colours of finish and the costs of the treatments are acceptable to the Ministry and theiradoption has been agreed to by the appropriate section of MOD(PE), Sea SystemsControllerate, Foxhill, Bath.

3. Electrical machinery items are to be prepared and painted in accordance with NES 507.Whenever possible equipment with both mechanical and electrical parts is to have both partspainted in accordance with NES 507.

4. For items not exempt (see Scope 2.) the procedures in this NES are to be adopted as soon ascan be conveniently arranged with the minimum of disruption to standard productionprocedures etc, and the minimum of cost.

5. If an equipment manufacturer considers the paint systems in this NES unsuitable for hisproduct(s) or that adoption of the paint systems would cause unacceptable disruption or cost,he is to inform the appropriate section of Sea Systems Controllerate accordingly with all therelevant facts and agree with Sea Systems Controllerate the procedure to be adopted.

6. This NES does not specify whether or not surfaces of equipment casings, carcases, bodies etc,are to be painted. If guidance is required for this the relevant drawings or specifications forthe equipment are to be consulted.


iv


v

FOREWORD

Sponsorship

1. ThisNaval Engineering Standard (NES) is sponsored by theProcurement Executive, Ministryof Defence, Deputy Controller Warships (DCW), Section NA 131.

2. It is to be applied as required by any Procurement Executive, Ministry of Defence contract forthe preservation and painting of mechanical machinery items and is applicable to SurfaceShips and Submarines.

3. If it is found to be technical unsuitable for any particular requirement the Sponsor is to beinformed in writing of the circumstances with a copy to Deputy Controller WarshipEquipment (DCWE), Section ME 241.

4. Any user of this NES wither within MoD or in outside industry may propose an amendmentto it. Proposals for amendments 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.

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

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

7. 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.

8. This NES has been reissued because of amendments to NES and the updating of NES format.

Conditions of Release

General

9. 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.

10. 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.

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

MOD Tender or Contract Process

12. 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.


vi

13. 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.

14. 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

15. 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.

16. 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.

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

Health and Safety

Warning

18. 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.


vii

CONTENTSPage No

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

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

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

General v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MOD Tender or Contract Process v. . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

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

SECTION 1. MATERIALS 1.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TABLE 1.1 MATERIALS 1.2. . . . . . . . . . . . . . . . . . . . .

SECTION 2. PREPARATION OF SURFACES 2.1. . . . . . . . . . . . . . .2.1 Steel and Cast Iron 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . .2.2 Steel, corrosion resisting 2.1. . . . . . . . . . . . . . . . . . . . . .2.3 Aluminium and Aluminium Alloys 2.1. . . . . . . . . . . . . .2.4 Copper and Copper Alloys 2.2. . . . . . . . . . . . . . . . . . . .2.5 Nickel Alloys 2.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.6 Zinc and Cadmium 2.2. . . . . . . . . . . . . . . . . . . . . . . . . . .2.7 Tungum (Aluminium Nickel Silicon Brass) 2.2. . . . . . .2.8 Painted surfaces 2.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3. PAINT SYSTEMS 3.1. . . . . . . . . . . . . . . . . . . . . . . . . . .3.1 Mechanical Equipment 3.1. . . . . . . . . . . . . . . . . . . . . . .3.2 Mechanical Equipment for Submarines 3.2. . . . . . . . . .3.3 Mechanical Equipment for Submarine Reactor

Compartments (not exempt by Clauses 1. and 2.) 3.2.3.4 Piping etc of Tungum

(not exempt by Clauses 1. and 2.) 3.3. . . . . . . . . . . . . . .3.4.1 For ship internal use only as follows 3.3. . . . . . . . . . . . .3.4.2 For ship external use. also acceptable for

internal use, as follows 3.3. . . . . . . . . . . . . . . . . . . . . . .

SECTION 4. MAINTENANCE 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 5. EXCEPTIONS 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

ANNEX C. PROCUREMENT CHECK LIST C.1. . . . . . . . . . . . . . .

ALPHABETICAL INDEX


viii


1.1

1. MATERIALS

a. The particulars of the materials to which this NES refers are as follows:

MATERIAL QUANTITY SPECIFICATION NATO STOCK NO

Paint, pretreatmentprimer

5 litres DEF STAN 80−15base

8010−99−220−4527

2½litres DEF STAN 80−15Acid component(brushing paint)

8010−99−220−4528

5 litres DEF STAN 80−15Acid component(spraying paint)

8010−99−220−4529

n-Butanol TechnicalThinner

5 litres BS 508 (Toconvert brushingpretreatmentprimer to sprayinggrade)

6810−99−220−0829

Paint system, DefenceEquipment, high gloss,Alkyd, stoving:PrimingUndercoat Finishing

DEF STAN 80−51

Paint system, DefenceEquipment, high gloss,Alkyd, air drying:Priming ZincPhosphate/ZincChromeUndercoatFinishing

DEF STAN 80−50

Paint, Priming, redoxide/ zinc chrome

5 litres DEF STAN 80−7 8010−99−910−6648

Paint, Priming, zincchrome fire retardant

10 litres DEF STAN 80−77 8010−99−225−0896

Paint, finishing,general service gloss,white

5 litres DEF STAN 80−54 8010−99−910−7037

Desmalkyd sealer forsubmarine interiors

5 litres CDL 57/73 8010−99−543−2617

Enamel white epoxywhite for interior ofsubmarines

5 litres ProprietaryInternationalPaints Ltd

0810−99−224−2674

Chlorinated rubberpaints grade EAX:

red primergrey primeroff white

finishingwhite finishing

Proprietary


1.2

Lacquer, Acrylic,INCRALAC (specifiedherein for Tungumsurfaces)

DEF STAN 80−24

Paint system Epoxy forinterior of bulkgasoline tanks.(Specified herein forTungum surfaces)

red 5 litres DEF STAN 80−97 8010−99−220−5633

blue 5 litres 8010−99−220−5634

white 5 litres 8010−99−220−5635

Detergent (built) liquidgeneral purposecleaning for use in HMShips

5 litres DG Ships 305 7930−99−224−6817

Detergent GeneralPurpose Slix

5 litres ProprietaryPenetone Co Ltd

7930−99−407−1971

Abrasive paper siliconcarbide, wet/dry

P 180 gradeP 320 gradeP 120 gradeP 220 grade

BS 872

5350−99−129−39395350−99−274−60665350−99−129−3936

TABLE 1.1 MATERIALS

b. Paint, pretreatment primer (etch primer) to DEF STAN 80−15 is slightly watersensitive and must therefore be overcoated within 1 hour minimum to 4 hoursmaximum. For a brushing consistencymix 2parts base to 1part acid componentand for a spraying consistency mix 1 part base to 1 part acid component, or add1 part n-butanol to BS 508 tomixed brushing paint ie of 2 parts base 1 part acidcomponent.

c. Paint system, alkyd, stoving, to DEF STAN 80−51, comprises priming,undercoat and finishing paint of either brushing, spraying, electrostaticspraying or dipping type. The stoving schedule may vary between differentmanufacturers but must not exceed 140° C for 1 hour for each coat, irrespectiveof type.

d. Paint system, alkyd, air drying, to DEF STAN 80−50 comprises priming,undercoat and finishing paint of either brushing, spraying, electrostaticspraying or dipping type. The drying characteristics are:


1.3

Primer surface dry 2 hours from application

hard dry 4 hours from application

recoat time 6 hours from application

Undercoat surface dry 4 hours from application


recoat time 8 hours from application

Finishing surface dry 4 hours from application


*recoat time 24 hours from application

* Special approval may be given to spray the coats of finishing paint wet on wetwhen it has been demonstrated to the satisfaction of the Approving Authorityfor the paint (Director of Materials Quality Assurance E 135/17 Royal ArsenalEast,Woolwich, London SE 18 6TD) that this does not result inan inferior paintsystem.

High humidity (above 70% relative humidity) and/or low temperatures (below10° C) will increase the drying periods beyond those quoted above.

e. Paint, priming, red oxide of iron/zinc chrome to DEF STAN 80−7may be eitherto a brushing, spraying or dipping grade. The primer is surface dry in 2 hoursand hard dry in 4 hours from application. High humidity and/or lowtemperatures will increase the drying periods beyond those quoted above.

f. Paint, priming, zinc chrome, fire reardant, to DEF STAN 80−77 is only abrushing grade. It is surface dry in 6 hours and hard dry in 16 hours afterapplication. High humidity and/or low temperatures will increase the dryingtimes shown. This primer is not recommended for use in production line work.

g. Paint, finishing, general service gloss to DEF STAN 80−54 may be either abrushing or spraying grade. It is surface dry in 4 hours and hard dry in 16 hoursafter application. High humidity and/or low temperatures will increase thedrying times shown. It is applied coat on coat (dried) and has no associatedundercoat).

h. Desmalkyd sealer for submarine interiors CDL 57/73 is formulated to sealoleoresinous paint surfaces so that they can be successfully overcoated withepoxy paints. Drying may be slow. The second coat may be applied, if essentialtomeet scheduled dates etc, before the first is thoroughly hard dry. In any eventthe sealer coats must be thoroughly hard dry before overcoating.

i. Paint system, Epoxy, to DEF STAN 80−97 is a two pack material, the basecomponent container being large enough to receive the curing agent from itsseparate container of correctly proportioned quantity.


1.4


2.1

2. PREPARATION OF SURFACES

a. The preparation of surfaces is to be in accordance with DEF STAN 03−2.Percussive tools, coarse wire tools and sharp cornered metal scrapers areprohibited from use on non-ferrous surfaces.

b. Brief guidance for preparing for painting non-stressed carcases, casings andsimilar, based on DEF STAN 03−2 is given in Clauses 2.1a.−2.7.

2.1 Steel and Cast Iron

a. The preferred method is fine abrasive blasting to first quality standard inBS 7079.

b. Alternatively steel and cast iron surfaces may be scoured with moistenedpumice, alumina, silicon carbide etc or with rotary discs or wire brushes toremove surface rust. Residual abrasive and arisings must be removed and thesurfaces degreased and dried.

c. For the removal of grease or oil and dirt, cleaning with detergent solution ispreferred to cleaning with solvents. Surfaces must be dry before painting iscommenced. Detergent for use in HM Ships is to specification DG Ships 305used normally at strengths up to 5% by volume in fresh water and certainly notat strengths above 10% by volume on heavy grease and oil. For submarines Slixis specified. Scrubbing with the solution is necessary followed by adequaterinsing and drying. Two or three applicationsmay be necessary to remove heavycontamination.

2.2 Steel, corrosion resisting

a. The preferred method is fine abrasive blasting to first quality standards inBS 4232.

b. Scouring withmoistened pumice, alumina or silicon carbide is less effective butbetter than no preparation at all. The use of rotary discs or wire brushes is notrecommended except under skilled control. Residual abrasive and arisingsmustbe removed and the surfaces degreased and dried.

c. Degreasing in accordance with Clause 2.1c. is most important and is always tobe carried out.

d. Apply paint, pretreatment primer (etching primer) to DEF STAN 80-15 inaccordance with NES 759. The first coat of the specified paint system is to beapplied within 1 to 4 hours from the time of application of the pretreatmentprimer.

2.3 Aluminium and Aluminium Alloys

a. Degrease in accordance withClause 2.1c. orDEFSTAN03−2Methods A and/orB2.

b. Etch in accordance with DEF STAN 03−2methods 0 or P or lightly abrade withaluminium oxide. The abrading may be carried out by abrasive blasting withfine aluminium oxide.

c. Apply paint, pretreatment primer (etching primer) to DEF STAN 80−15 andovercoat thiswithin 1 to 4 hours with the first coat of the specified paint system.Anodized parts, if specified to be painted, are to be painted directly with paint,pretreatment primer (etching primer) to DEF STAN 80−15, with no etching orabrading after anodizing.


2.2

2.4 Copper and Copper Alloys

a. Degrease in accordance with Clause 2.1c. or DEF STAN 03−2 methods A, B, Cor Q.

b. Preferably fine abrasive blast or alternatively scour in accordance with DEFSTAN 03−2 D2 or D3.

c. Apply paint, pretreatment primer (etching primer) to DEF STAN 80−15 andovercoat thiswithin 1 to 4 hours with the first coat of the specified paint system.

2.5 Nickel Alloys

a. Degrease in accordance with Clause 2.1c. or DEF STAN 03−2 Methods A, B, Cor T.

b. Preferably fine abrasive blast or scour in accordance with DEF STAN 03−2 D2or D3.

c. Apply paint, pretreatment primer (etching primer) to DEF STAN 80−15 andovercoat thiswithin 1 to 4 hours with the first coat of the specified paint system.

2.6 Zinc and Cadmium

a. Degrease in accordance with Clause 2.1c. or DEF STAN 03−2 Methods A1, A2or B2.

b. Apply paint, pretreatment primer (etching primer) to DEF STAN 80−15 andovercoat thiswithin 1 to 4 hours with the first coat of the specified paint system.

2.7 Tungum (Aluminium Nickel Silicon Brass)

a. Degrease using a 5% by volume freshwater solution of DG Ships 305 GPdetergent and scrub with a stiff bristle brush.

b. Polish using silicon carbide paper to BS 872 used wet, either grade 320 if thecoating is to DEF STAN 80−24 or grade 180 if the coating is to DEF STAN80−97.

c. Rinse clean with fresh water and dry.

d. Apply the first coat of the specified paint system as soon as the preparation hasbeen completed (see Clauses 3.4.1a. and 3.4.2)

2.8 Painted surfaces

a. Preparation of painted surfaces for repainting is to be by degreasing inaccordance with Clause 2.1c. and then matting the paint surface by lightlyabrading it with silicon carbide paper grade 180 to BS 872 used wet, rinsingclean and finally drying. Baremetal is to be prepared inaccordance withClauses2.a.−2.7 as appropriate.


3.1

3. PAINT SYSTEMS

a. It has not been possible to adopt one general paint system nor to eliminate thenecessity to apply in service different paint systems to those applied atmanufacture.

b. Non-ferrous alloys and stainless steel require an initial coat of ‘pretreatment’or ‘etch’ primer. This initial coat is included with the preparation of surfacesgiven in Section 2. Pretreatment primer to DEF STAN 80−15 requires to beovercoated with the first coat of the specified paint system within 1−4 hours.

c. Paint system colours are to be specified in equipment drawings or specificationsor agreed with the appropriate section of MOD(PE), Chief Naval Architect,Foxhill, Bath. Equipment required to match the finish on electrical equipment(see Clause 3.) is to be grey BS 381c No 697 for inboard items and grey BS 381cNo 676 for items fitted to the exterior weatherwork structure of Surface Ships.Items fitted externally on Submarines are to be painted to the system and colourto conform with the surrounding structure.

d. Surfaces that are machined, lubricated, driven or drive, or provide electricalcontact and items such as lubricating nipples, caps, etc are not to be painted.

e. Hydraulic pipework joints specified to be wrapped with clad tape are not to bepainted. When these joints are broken, great care must be taken to preventcontamination of the system and joint with paint particles.

f. ‘X’ mounts and the rubber components of shock and vibration mounts must beprotected from all forms of contamination during cleaning and painting of themounted items, BR 3021 refers and gives advice on protection methods.

3.1 Mechanical Equipment

a. When a stoving paint system is specified in drawings or contract documents orwhen suitable stoving facilities are available and the item is not exempt fromthe requirements of this NES (see Clauses 1. and 2.) the following system is tobe applied:

Paint system, Defence equipment, high gloss, Alkyd, stoving, to DEFSTAN 80−51 comprising the following:

Paint, priming, dry film thickness 30 to 35 microns;

Paint, undercoat, dry film thickness 25 to 30 microns;

Paint, finishing, dry film thickness 35 to 45microns, to produce a total dryfilm thickness for the complete system of not less than 100 microns.

Two coats of finishing paint will probably be required.

The stoving temperature is not to exceed 140° C.

b. When an air drying paint system is specified in drawings or contract documents,or when suitable stoving facilities are not available and the time is not exemptfrom the requirements of this NES (see Clauses 1. and 2.) one of the followingsystems is to be applied:

(1) either the paint system to DEF STAN 80−50 viz:

2 costs of zinc phosphate/zinc chrome primer dry film thickness 25−35microns per coat;


3.2

1 coat of undercoat dry film thickness 20−30 microns;

2 coats of finishing paint dry film thickness 20−25 microns per coat.

(2) or alternatively the following system, viz:

2 costs of primer of either:

zinc phosphate/zinc chrome primer to DEF STAN 80−50 dry filmthickness 25−35 microns per coat;

or red oxide/zinc chrome primer to DEF STAN 80−7 dry film thickness25−35 microns per coat;

or zinc chrome, fibre retardant primer to DEF STAN 80−77 dry filmthickness 30−40 microns per coat;

2 coats finishing general service gloss to DEF STAN 80−54 dry filmthickness 30−40 microns per coat.

3.2 Mechanical Equipment for Submarines

a. Equipment not exempt from the requirements of this NES (see Clauses 1. and2.) is to be treated as follows:

(1) Those painted in accordance with Clause 3.1a. are to be allowed at least14 days storage in a well ventilated space after the completion of thepainting and before installation in the submarine.

(2) Those painted in accordance with Clause 3.1a. and 3.1b. are to be furthertreated as follows:

Apply 2 coats of Desmalkyd Sealer for Submarine interiors to CDL 57/73allowing the necessary 24 hours drying time between coats. The materialmay take more than 24 hours to become hard dry.

Apply 1 coat of enamel white epoxy for interior of submarines.

(3) Equipment for the interior of submarines may be given 3 coats of theenamel white epoxy finishing paint direct to bare metal at themanufacturers.

Equipment with both Mechanical and Electrical Parts (not exempt by Clauses1. and 2.):

b. The paint system is to be in accordance with NES 507, ie as for the electricalpart. Only if the paint system for the electrical part is not specified, or theelectrical part is insignificant in size compared with the mechanical part, is themechanical part to be painted in accordance with Clauses 3.1a. or 3.1b.

3.3 Mechanical Equipment for Submarine Reactor Compartments (not exempt byClauses 1. and 2.)

a. 1 coat Tretol chlorinated rubber paint grade EAX,red primer

dry filmthickness25−35micronseach coat

1 coat Tretol chlorinated rubber paint grade EAX,grey primer1 coat Tretol chlorinated rubber paint grade EAX,off white finishing1 coat Tretol chlorinated rubber paint grade EAX,white finishing


3.3

3.4 Piping etc of Tungum (not exempt by Clauses 1. and 2.)

3.4.1 For ship internal use only as follows:

a. 3 coats of Lacquer, Acrylic (Incralac) to DEF STAN 80−24. Allow one hourdrying time between coats.

3.4.2 For ship external use. also acceptable for internal use, as follows:a. 1 coat of paint, protective, to DEF STAN 80−97,

reddry filmthickness40−50micronseach coat

1 coat of paint, protective, to DEF STAN 80−97,white1 coat of paint, protective, to DEF STAN 80−97,blue1 coat of paint, protective, to DEF STAN 80−97,white


3.4


4.1

4. MAINTENANCE

a. Routine maintenance is to be by washing with detergent solution in accordancewithClause 2.1c. Regular washing of equipment to remove grease, oil, dirt, bilgewater etc, will reduce the need for repainting to theminimum. Routine washingin accordance withClause 2.1c. is to be included inUsers Standing Instructions.

b. Surfaces which are worn, damaged or stripped to exposed metal are to beprepared in accordance with the relevant clauses of Section 2.

c. Where wear or damage to bare metal is extensive complete removal of allremaining old paint is to be undertaken in order to ensure an acceptablestandard of appearance after repainting. Old coatings which have been built upto an excessive thickness are to be removed to reduce fire risk and to obtain anacceptable standard of appearance.

d. Coatings may be removed by:

(1) abrasive blasting in accordance with NES 755,

(2) scouring in accordance with DEF STAN 03−2,

(3) the application of paint remover in accordance with NES 762.

In each case the necessary precautions are to be taken to protect personnelemployed in these processes. The removal of arisings and disposalarrangements and the final preparation of the surfaces is to be as detailed inNES 755, DEF STAN 03−2 or NES 762 as appropriate.

e. Repainting is only to be undertaken when the appearance has deterioratedbadly or when wear or damage has rendered the paintwork inadequate as ananti-corrosive system. In such circumstances repainting is to be carried out inaccordance with Clauses 4.f. to 4.m. as appropriate to the paint systempreviously applied.

f. When equipment is repainted within submarine compartments and spaces onlymaterials cleared for use in BR 1326 Appendix 2 are to be used. BR 1326 andNES 774 are to be referred to in conjunction with Clauses 2.1c., 3.2a., 3.3a., 4.k.and 4.1.

g. Equipment painted in accordance withNES507 is to be repainted inaccordancewith NES 507 (see also Clause 3.).

h. Equipment previously painted with the stoving paint system to DEF STAN80−51 in accordance with Clause 3.1a. is to be repainted as follows:

(1) for cosmetic painting apply 1 coat of finishing paint, general service gloss,to DEF STAN 80−54.

(2) for represervation of bare metal repaint as follows:

(a) To bare metal apply 2 coats of primer, either zinc phosphate/zincchrome toDEFSTAN80−50 or red oxide/zinc chrome toDEFSTAN80−7 or zinc chrome, fire retardant, to DEF STAN 80−77.

(b) To primed areas apply 1 coat of finishing paint, general service gloss,to DEF STAN 80−54 followed by 1 coat of the same paint over all.

i. Equipment previously painted with air-drying paints in accordance with clause3.1b. repaint for cosmetic reasons in accordance with Clause h.(1), and forrepreservation in accordance with Clause 4.h.(2).


4.2

j. Equipment previously exempt from the requirements of this NES and sopreviously painted with the manufacturers commercial paint systems are to berepainted as follows:

(1) With an air-drying repainting system as recommended by the equipmentmanufacturing, or

(2) In accordance with Clause h.(1), or (2)., as appropriate to the condition ofthe existing paint system.

k. Equipment for submarines painted in accordance withClause 3.2a., or 3.2b. areto be repainted as follow:

(1) For cosmetic painting apply 1 coat of enamel white epoxy for the interiorof submarines.

(2) For represervation painting apply 2 coats of enamel white epoxy for theinteriors of submarines to bare metal surfaces followed by 1 coat of thismaterial over all.

l. Equipment in reactor compartments painted with Tretol chlorinated rubberpaint grade EAX (Clause 3.3a.) are to be prepared and repainted as follows:

(1) For cosmetic painting apply 1 coat of Tretol chlorinated rubber paintgrade EAX, white, finishing.

(2) For represervation painting prepare in accordance with Clause 2.8a., tobare areas apply the full 4 coat Tretol EAX system as in Clause 3.2b.followed by 1 coat of Tretol EAX, finishing, white, over all.

(3) Paint thicknesses on certain areas in reactor compartments are strictlycontrolled. Before repainting of any equipment in reactor compartmentsis undertaken it must be established that no restriction on the paintthickness applies. Guidance is available from the appropriate MoD (PE)submarine section if not documented in ship or refit instructions.

m. Equipment, piping etc of Tungum painted with Lacquer, Acrylic, to DEF STAN80−24 (Clause 3.4.1a.) are to be prepared and repainted as follows:

(1) Prepare in accordance with Clause 2.8a. except that the silicon carbidewet/dry paper is to be Grade 320 to BS 872.

(2) To bare areas apply 2 coats of Lacquer,Acrylic (INCRALAC) toDEFSTAN80−24 allowing 1 hour drying time between coats.

(3) Apply 1 coat of Lacquer, Acrylic (INCRALAC) to DEF STAN 80−24 overall.

If repainting is undertaken for cosmetic reasons follow the procedures inClause4.m. and c.

n. Equipment, piping etc of Tungum painted with paint system for bulk gasolenetanks interiors, DEF STAN 80−97, are to be prepared and repainted as follow:

(1) Prepare in accordance with Clause 2.8a.

(2) To bare areas apply 3 coats of paint, protective, to DEF STAN 80−97 (red,white, blue).

(3) Apply 1 coat of paint, protective, to DEF STAN 80−97, white, over all.

If repainting is undertaken for cosmetic reasons follow the procedures inClause4.n.(1) and (3).


5.1

5. EXCEPTIONS

a. Exceptions to the paint systems are given in Section 3.

NOTE The details of exceptions agreed betweenMOD(PE) and theManufacturerto be recorded are:

Sea Systems Controllerate (DCW) section which authorized the exceptionand the date of the exception.

Manufacturer of the equipment.

Details of the equipment, description, type, etc.

Materials from which the equipment is manufactured.

Agreed paint system/s at manufacture.

Agreed paint system/s, if any, for repainting equipment when fitted in aship.


5.2


A.1 ANNEX A.

ANNEX A.

RELATED DOCUMENTS

A.1 Reference is made to:

Referred to inClause

BS 381c Colours for identification coding and specialpurposes

3.c.

BS 508 Butan-l-ol for industrial use 1.a., 1.b.

BS 871 Abrasive papers and cloths (technical products) 1.a., 2.7, 2.8a.,4.m.

BS 7079 Preparation of steel substrates before applicationof paints and related products

2.1a., 2.2a.

A1: Specification for rust grades and preparationgrades of uncoated steel substrates after overallremoval of previous coating

DEFSTAN03−2

Cleaning and preparation of metal surfaces 2.a., 2.b., 2.3a.,2.3b., 2.3a., 2.3b.,2.5a., 2.5b., 2.6a.,4.d.

DEFSTAN80−7

Paint, priming, red oxide of iron/zinc chrome 1.a., 1.e., 3.1b.,4.h.

DEFSTAN80−15

Paint, pretreatment primer (etching primer) 1.a., 1.b., 2.2d.,2.3c., 2.3c., 2.5c.,2.6b., 3.b.

DEFSTAN80−24

Lacquer, Acrylic (Incralac) 1.a., 2.7, 3.4.1a.,4.m.

DEFSTAN80−50

Paint system, Defence Equipment, high gloss,Alkyd

1.a., 1.d., 3.1b.,4.h.

DEFSTAN80−51

Paint system, Defence Equipment, high gloss,Alkyd, stoving

1.a., 1.c., 3.1a.,4.h.

DEFSTAN80−54

Paint, finishing, general service gloss 1.a., 1.g., 3.1b.,4.h.

DEFSTAN80−77

Paint, priming, zinc chrome fire retardant 1.a., 1.f., 3.1b.,4.h.

DEFSTAN80−97

Paint system Epoxy for bulk gasoline tanksinteriors

1.a., 1.i., 2.7,3.4.2, 4.n.

NES 507 Materials and finishes, Electro technicalequipment requirements

Scope 3., 3.2b.,4.g.

NES 755 Abrasive blast cleaning of steel 4.d.

NES 759 Pretreatment use of Primers 2.2d.


A.2ANNEX A.

NES 762 Use of brushing type Paint Removers 4.d.

NES 774 Painting procedure for Submarines 4.f.

BR 1326 Air Purification in Submarines 4.f.

BR 3021 Shock Manual 3.f.

DG Ships305

Detergent (Built) Liquid, General PurposeCleaning for use in HM Ships

1.a., 2.1c., 2.7


B.1 ANNEX B.

ANNEX B.

DEFINITIONS AND ABBREVIATIONS

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


B.2ANNEX B.


C.1 ANNEX C.

ANNEX C.

PROCUREMENT CHECK LIST

STATEMENT OF TECHNICAL REQUIREMENTS

TITLE: ........................................

REFERENCE: ..........................

Notes:

1. This Check List is to ensure that certain aspects of this Naval EngineeringStandard are consulted when preparing a Statement of TechnicalRequirements for a particular application.

2. Clauses where a preference for an option is to be used or where specificdata is to be added are included in the Check List.

3. Each item is to be marked either:

n = included

NA = not applicable

CHECK No CHECK CLAUSE No n orNA

1 Etch primer, overcoating 1.b.

2 Etch primer, consistency 1.b.

3 Paint, priming, red oxide of iron/zincchrome spraying or dipping grade

1.e.

4 Paint, finishing, general service gloss,brushing or spraying grade

1.g.

5 Desmalkyd sealer, number of coats 1.h.

6 Non ferrous surfaces, prohibition of sharptools

2.a.

7 Steel and cast iron, preparation 2.1a.

8 Steel, corrosion resisting, preparation 2.2a.

9 Aluminium and aluminium alloys, prep-aration

2.3a.

10 Copper and copper alloys, preparation 2.3a.

11 Nickel alloys, preparation 2.5a.

12 Zinc and cadmium, preparation 2.6a.

13 Surfaces not to be painted 3.d.

14 Air drying system, stoving system, alter-natives

3.1b.

15 Piping etc of Tungum 3.4.1a.

16 Removal of coatings 4.d.

17 Recoating of commercial paint systems 4.j.

18 Repainting of submarine equipment 4.k.

19 Repainting of equipment in reactor com-partment

4.l.

20 Repainting of equipment, piping etc ofTungum

4.m.


C.2ANNEX C.


INDEXINDEX.1

ALPHABETICAL INDEX

AAlkyd, air drying system, 1.1, 1.2, 3.1, 4.2

Alkyd, stoving system, 1.1, 1.2, 3.1, 4.2

Aluminium and Aluminium alloys, 2.1

CCommercial treatments, acceptance, i

Copper and Copper alloys, 2.2

DDesmalkyd sealer, 1.3, 3.2, 4.2

EElectrical equipment, i, 3.1, 4.2

Epoxy system, 1.3

Equipment with both mechanical and electrical parts, 3.2

Etch primer, 1.2

GGeneral service gloss finishing, qualities, 1.3

HHydraulic pipework joints, 3.1

LLacquer, Acrylic, lNCRALAC, 1.1, 2.2, 3.2, 4.2

Lubricated surfaces, 3.1

Lubricating nipples etc, 3.1

MMachined surfaces, 3.1

Mechanical equipment, 3.1

Mechanical equipment for submarine reactor compartments, 3.2, 4.2

Mechanical equipment for submarines, 3.2, 4.2

NNickel alloys, preparation, 2.2


INDEX INDEX.2

PPercussive tools etc, prohibition, 2.1

Piping of Tungum, 3.2

Precautions, 4.1

Pretreatment primer, 1.1, 1.2

RRed oxide/zinc chrome primer, qualities, 1.2

Repainting, preparation, 2.2, 4.1

Repair of commercial paint systems, 4.2

Repair of damaged coatings, 4.1

SShock and vibration mounts, 3.1

Steel and cast iron, preparation, 2.1

Steel, corrosive resisting, preparation, 2.1

Storage of painted equipment, 3.2

TTungum, 2.2, 3.2, 4.2

VVibration and shock mounts, 3.1

WWashing, 2.1, 4.1

Wet on wet, approval, 1.2

ZZinc and cadmium, preparation, 2.2

Zinc chrome primer, qualities, 1.3

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/69/02/737.

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.

NES 737

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Transcript of NES 737