NBN EN 287-2 : 92 ADD 1 97

Foreword
Foreword of amendment A1
0 Introduction
1 Scope
2 Normative references
3 Definitions
3.1 General
3.2 Welder
3.3 Examiner or test body
3.4 Welding procedure specification (WPS)
3.5 Heat treatment
3.6 Range of approval
3.7 Test piece
3.8 Test specimen
3.9 Test
4 Symbols and abbreviations
4.1 General
4.2 Test piece
4.3 Filler metal
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 Filler metal and shielding gas
5.6 Dimensions
5.7 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 Filler metal and shielding gas
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 test specimens
8 Acceptance requirements for test pieces
9 Re-tests
10 Period of validity
10.1 Initial approval
10.2 Prolongation
11 Certification
12 Designation
Annexes
A (informative) - Welder Approval Test Certificate
B (informative) - Manufacturer's Welding Procedure
      Specification (WPS)
C (informative) - Job knowledge

Describes essential requirements, ranges of approval, test conditions, acceptance requirements and certification for the approval testing of welder performance for the welding of aluminium. During the approval test the welder should be required to show adequate practical experience and job knowledge. Applicable when the welder's approval testing is required by the purchaser, inspection authorities or other organizations. Applies to the approval testing of welders for the fusion welding of aluminium using a gas shield. The welding processes referred to include those fusion welding processes which are designated as manual or partly mechanized welding. It does not cover fully mechanized and fully automatic processes.