PREN 12732 : DRAFT 2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Quality system
5 Welding consumables
6 Production welding
7 Special procedures
8 Inspection of the weld joint
9 Documentation
10 Specific requirements for gas supply systems up
   to and including 16 bar MOP (distribution)
11 Specific requirements for gas supply greater than
   16 bar MOP (transmission)
12 Specific requirements for metering, regulating and
   compressor stations
Annex A (informative) - Qualification for pipeline welders
        (Girth welds and branch connections)
Annex B (informative) - Testing of the base material
        (lamination test)
Annex C (informative) - Time of Flight Diffraction Technique
        (TOFD)
Annex D (informative) - Critical aspects for hot-tap welding
        or welding on gas-pressurised pipelines
Annex E (informative) - Visual inspection of joints
Annex F (informative) - Manual ultrasonic testing of weld
        joints for wall thickness between approximately 6 mm
        and 10 mm
Annex G (informative) - Acceptance criteria recommendations
        for on-site production welds
Annex H (informative) - Recommendations for brazing and
        aluminothermic welding of anodic bonding leads
Bibliography

Describes requirements for the production and testing of weld joints for the installation and modification of onshore steel pipelines and pipework used in gas supply systems, including in-service pipelines, for all pressure ranges for the carriage of processed, non-toxic and non-corrosive natural gas.