NEN EN ISO 9606-4 : 1999

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Symbols and abbreviations
    4.1 General
    4.2 Test piece
    4.3 Consumables
    4.4 Miscellaneous
5 Essential variables for approval testing
    5.1 General
    5.2 Welding processes
    5.3 Joint types (butt and fillet welds)
    5.4 Material groups
    5.5 Consumables
    5.6 Dimensions
    5.7 Number of test pieces
    5.8 Welding positions
6 Range of approval for the welder
    6.1 General
    6.2 Welding process
    6.3 Joint types
    6.4 Material groups
    6.5 Consumables
    6.6 Dimensions
    6.7 Welding positions
7 Examination and testing
    7.1 Supervision
    7.2 Shapes and dimensions of test pieces
    7.3 Welding conditions
    7.4 Test methods
    7.5 Test piece and specimens
8 Acceptance requirements for test pieces
9 Re-tests
10 Period of validity
    10.1 Initial approval
    10.2 Prolongation
11 Certificate
12 Designation
Annex A (informative) Job knowledge
Annex ZA (informative) Bibliography
Annex ZB (informative) Clauses of this European Standard
                         addressing essential requirements
                         or other provisions of EU Directives

Defines essential requirements, approval ranges, test conditions, acceptance requirements and certification for welder performance for the fusion welding of nickel and nickel alloys.