NEN EN 12952-6 : 2011

Foreword
1 Scope
2 Normative references
3 Terms and definitions
   3.1 Inspection
4 General organization
   4.1 General
   4.2 Conformity assessment
   4.3 Competency of the manufacturer
   4.4 Calibration of equipment
   4.5 Inspection activities
5 Non-destructive examination of parent materials
6 Approval of welding procedure specification
   6.1 General
   6.2 Application of EN 288-3
7 Welder and welding operator approval
8 Production control test plates for drums
   8.1 General
   8.2 Number of production control test plates
   8.3 Tests required
   8.4 Acceptance criteria
   8.5 Non-conformance of results
9 Non-destructive examination of welds
   9.1 Type and extent of non-destructive examination
   9.2 Qualification of non-destructive examination
        personnel
   9.3 The detection of surface imperfections
   9.4 The detection of volumetric imperfection
   9.5 Non-destructive examination report
10 Final inspection
   10.1 Visual and dimensional examinations
   10.2 Hydrostatic pressure test
11 Documentation
12 Marking
Annex A (normative) Chemical recovery boilers
      A.1 General
      A.2 Special requirements of approval of fusion welding
          procedure specification
      A.3 Special requirements for welder's approval for
          fusion welding of composite tubes
      A.4 Special requirements for non-destructive testing
          of welds
Annex ZA (informative) Clauses of this European Standard
         addressing essential safety requirements or other
         provisions of the Pressure Equipment Directive
Bibliography

Defines requirements for the inspection during construction, documentation and marking of water-tube boilers as defined in EN 12952-1.