NEN EN 288-1 : 1997

Cooperating organizations
National foreword
Foreword
0. Introduction
1. Scope
2. Normative references
3. Definitions
3.1 Welding procedure
3.2 Welding processes
3.3 Preliminary welding procedure specification (pWPS)
3.4 Welding procedure specification (WPS)
3.5 Work instruction
3.6 Approved welding procedure specification
3.7 Welding procedure approval record (WPAR)
3.8 Previous welding experience
3.9 Approved welding consumable
3.10 Welding procedure test
3.11 Standard welding procedure
3.12 Pre-production welding test
3.13 Welding consumables
3.14 Welding variable
3.15 Range of approval
3.16 Parent metal
3.17 Test piece
3.18 Test specimen
3.19 Test
3.20 Homogeneous assembly
3.21 Heterogeneous assembly
3.22 Dissimilar metal joint
3.23 Imperfection
3.24 Metallurgical deviation
3.25 Manufacturer
3.26 Welder
3.27 Manual welder
3.28 Welding operator
3.29 Examiner or test body
3.30 Supplier of consumables
4. Specification of welding procedures
5. Approval of welding procedure
5.1 General
5.2 Approval by previous welding experience
5.3 Approval by use of approved welding consumables
5.4 Approval by welding procedure tests
5.5 Approval by standard welding procedure
5.6 Approval by a pre-production welding test
Annex A (informative) - Guidelines for the application
and the subsequent choice of method of approval
National appendix NA (informative)

Describes general rules for the specification and approval of welding for metallic materials. Refers to several other standards. Assumes the welding procedure specifications are used in production by competent welders. May not be sufficient for fully automatic or robotic welding, without direct human control. Applies when approval of the welding procedure is required. Covers normative references, definitions, specification of welding procedures and approval of welding procedure.