9.8.3 Pipe weld and HAZ tests
The minimum average (of a set of three test pieces) absorbed energy for each pipe weld and HAZ test, based upon full-size test pieces and a test temperature of 0 °C (32 °F), or if agreed a lower test temperature, shall be
a) 27 J (20 ft.lbf) for pipe with D < 1 422 mm (56.000in) in grades ≤ L555 or X80;
b) 40 J (30 ft.lbf) for pipe with D ≥ 1 422 mm (56.000 in);
c) 40 J (30 ft.lbf) for pipe in grades > L555 or X80.
NOTE The HAZ of the longitudinal seam weld in HFW welded pipe is usually too narrow to permit accurate sampling for Charpy testing. The requirement for Charpy testing of the seam weld HAZ applies only to SAWL/SAWH and COWL/COWH pipe.