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DEFSTAN 02-770(PT2)/2(2006) : 2006

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

WELDING AND FABRICATION OF HIGH STRENGTH STEELS - PART 2: APPROVAL OF WELDING PROCEDURES FOR SUBMARINE CONSTRUCTION AND UPKEEP

Available format(s)

Hardcopy , PDF

Superseded date

09-13-2010

Language(s)

English

Published date

01-01-2006

Foreword
1 Scope
2 Warning
3 Normative References
4 Definitions
5 Approval Route
6 Deviations (Mechanical Properties)
  6.1 Process
  6.2 Edge Preparation
  6.3 Consumable
  6.4 Parent Material
  6.5 Welding Parameters
  6.6 Equipment
  6.7 General
7 Welding Considerations
  7.1 Welder Qualification
  7.2 Welding Sequence
  7.3 Environment
  7.4 Scantlings
8 Test Panels
  8.1 Test Series A
  8.2 Test Series B
9 Acceptance Criteria (See 5)
  9.1 Test Series A
  9.2 Test Series B
Annex A - Welding Procedures Cover Sheet
Annex B - Welding and Fabrication Procedure Check Sheet
Annex C - Check List for Categorising a Deviation in Terms
          of Mechanical Property Tests
Annex D - Checklist for Considerations other than Material
          Property Requirements
Annex E - Testing Requirements Guidance Sheet
  E.1 Guidance on the need for CTOD Testing
  E.2 Guidance on the need for FBE Testing
Annex F - Procedure for FBE testing
  F.1 Introduction
  F.2 Test piece design
  F.3 Test equipment
  F.4 Safety requirements
  F.5 Main requirements of test
  F.6 Fatigue pre-cracking
  F.7 Requirements for calibration trial
  F.8 Check list for test procedure
      F.8.1 Outline
      F.8.2 Pre-test tasks
      F.8.3 Tasks on morning of test
      F.8.4 Tasks immediately before test
      F.8.5 Tasks immediately after test
      F.8.6 Post test measurements

Applies to any Ministry of Defence contract for the welding and fabrication of High Strength Steels (HSS) i.e. Q1(N), Q2(N), QT35 and HY80. It defines the criteria for assessing variations from existing reference procedures and the testing and standards required for approval.

DevelopmentNote
Supersedes DEFSTAN 02-770(PT2)/1(2000) (07/2006) This standard is obsolescent because it is no longer required for the procurement of new equipment but is retained for maintenance purposes in support of existing in-service equipment. (07/2009)
DocumentType
Miscellaneous Product
Pages
34
PublisherName
UK Ministry of Defence Standards
Status
Superseded
SupersededBy
Supersedes

DEFSTAN 02-855/2(2010) : 2010 ELECTRON BEAM WELDING OF MARINE COMPONENTS
DEFSTAN 02-770(PT1)/3(2010) : 2010 REQUIREMENTS FOR THE WELDING AND FABRICATION OF HIGH STRENGTH STEELS - PART 1: GENERAL
DEFSTAN 02-706/2(2010) : 2010 WELDING & FABRICATION OF SHIP STRUCTURE FOR HM SUBMARINES AND SURFACE SHIPS NOT IN CLASS

DEFSTAN 02-770(PT1)/2(2005) : 2005 REQUIREMENTS FOR THE WELDING AND FABRICATION OF HIGH STRENGTH STEELS - PART 1: GENERAL
DEFSTAN 02-769/1(2000) : 2000 APPROVAL SYSTEM FOR WELDING CONSUMABLES FOR STRUCTURAL STEELS
BS EN ISO 15614-1:2017 Specification and qualification of welding procedures for metallic materials. Welding procedure test Arc and gas welding of steels and arc welding of nickel and nickel alloys
BS EN 10045-1:1990 Charpy impact test on metallic materials Test method (V- and U-notches)

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