Moduk Def Stan 02-747 Part 2

Ministry of DefenceDefence Standard 02-747 (NES 747)

Issue 1 Publication Date 01 April 2000

Incorporating NES 747 Part 2 Category 2

Issue 3 Publication Date January 1995

Requirements For Nickel AluminiumBronze Castings And Ingots

Part 2Nickel Aluminium Bronze

Naval Alloy Ingots AndSand Castings With Welding

Permitted To The Wetted Surface

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) 747 Part 2 Issue 3 dated January 1995.

Ministry of Defence

Naval Engineering Standard

NES 747 Part 2 Issue 3 (Reformatted) January 1995

REQUIREMENTS FORNICKEL ALUMINIUM BRONZE CASTINGS AND INGOTS

PART 2

NICKEL ALUMINIUM BRONZE NAVAL ALLOY INGOTS ANDSAND CASTINGS WITH WELDING PERMITTED TO

THE WETTED SURFACE

This NES Supersedes

NES 747 PART 2 ISSUE 2

Record of Amendments

AMDT INSERTED BY DATE

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iNAVAL ENGINEERING STANDARD 747

REQUIREMENTS FOR NICKEL ALUMINIUM BRONZE

CASTINGS AND INGOTS

PART 2

ISSUE 3 (REFORMATTED)

NICKEL ALUMINIUM BRONZE NAVAL ALLOY INGOTS AND SAND

CASTINGS WITHWELDING PERMITTED TO THEWETTED SURFACE

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 DefenceSea Systems, Foxhill, Bath BA1 5AB

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NES 747Part 2

Issue 3 (Reformatted)

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SCOPE

1. This NES states the requirements for the physical characteristics, test methods andacceptance standards of cast nickel aluminium bronze naval alloy ingots and sand castingswith welding permitted to the wetted surface. (See Section 1. for applicability.)

Submarines

2. This NES does not cover the use of the castings for first level systems and castings that maycome into contact with sea water except as indicated in Clause 1.a.

NES 747Part 2Issue 3 (Reformatted)

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NES 747Part 2

Issue 3 (Reformatted)

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FOREWORD

Sponsorship

1. ThisNaval Engineering Standard (NES) is sponsored by theProcurement Executive, Ministryof Defence, Director Naval Architecture (DNA), Section NA 115.

2. This NES comprises:

Requirements for Nickel Aluminium Bronze (NAB) Castings and Ingots.

Part 1 Nickel Aluminium Bronze Naval Alloy Centrifugally Cast

Part 2 Nickel Aluminium Bronze Naval Alloy Ingots and Sand Castings with WeldingPermitted to the Wetted Surface

Part 3 Nickel Aluminium Bronze Commercial Alloy Sand Castings and Ingots

Part 4 Nickel Aluminium Bronze Naval Alloy Sand Castings with Welding Restricted to theNon-Wetted Surface (Class I and II Castings only)

Part 5 Guide to the Design and Manufacture of Nickel Aluminium Bronze Sand Castings

3. If it is found to be unsuitable for any particular requirement the Sponsor is to be informed inwriting of the circumstances with a copy to Director Naval Architecture (DNA),Section NA 145.

4. Any user of this NES either within MOD or in industry may propose an amendment to it.Proposals for amendments which are:

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

b. directly applicable to a particular contract are to be dealt with using existingdepartmental procedures or as specified in the contract.

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

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

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 to reflect changes in technical requirements.

NES 747Part 2Issue 3 (Reformatted)

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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.

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.

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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.

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CONTENTSPage No

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

SCOPE iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Submarines 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 ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 1. APPLICABILITY 1.1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2. PHYSICAL CHARACTERISTICS 2.1. . . . . . . . . . . . .2.1 Ingots 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2 Ingot Analysis 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE 2.1 INGOTSCHEMICALCOMPOSITION 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Castings