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