UNI EN 12732 : 2014

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 infrastructure
   with a MOP up to and including 16 bar
11 Specific requirements for gas infrastructure
   with a MOP greater than 16 bar
12 Specific requirements for metering, regulating
   and compressor stations
Annex A (informative) - Qualification procedure
        for pipeline welders (Girth welds and branch
        connections)
Annex B (informative) - Testing of lamination defects
Annex C (informative) - Time-of-flight diffraction
        technique (TOFD)
Annex D (informative) - Critical aspects for hot-tap
        welding or welding on in-service pipelines
Annex E (informative) - Visual examination of joints
Annex F (informative) - Manual ultrasonic testing of weld
        joints for wall thickness between approximately
        6 mm and 8 mm
Annex G (normative) - Acceptance criteria - Recommendations
        for on-site production welds
Annex H (informative) - Brazing and aluminothermic welding
        of leads for cathodic protection systems
Annex I (informative) - Significant technical changes between
        this European Standard and the previous edition
Bibliography

Includes requirements for the production and testing of weld joints for the installation and modification of onshore steel pipelines and pipework used in gas infrastructure, including in - service pipelines, for all pressure ranges for the carriage of processed, non -toxic and non-corrosive natural gas according to EN ISO 13686 and for the carriage of non -conventional gases such as injected biomethane, where - the pipeline elements are made of unalloyed or low-alloyed carbon steel; - the pipeline is not located within commercial or industrial premises as integral part of the industrial process on those premises except for any pipelines and facilities delivering gas to such premises; - the pipework is not located within household installations according to EN 1775; - the design temperature of the system is between -40 degrees C up to and including 120 degrees C.