If you want to minimize cost and time to prepare WPS of both codes ASME IX and AWS D1.1. This also reduce number of PQR and save cost.
There are 3 notes in PQR:
- Type of material
- Wide range of qualification
- Welder qualification
Type of material
We suggest base metal specification no API 5L grade X52 PSL1 SMLS, thickness of 12.7mm instead of featured ASTM A106 grade B or API 5L grade B PSL1 SMLS.
- NPS 8″ Sch80 is in the group of standard test pipe qualification, see AWS D1.1 table 9.10
- API 5L grade X52 is in group II, see AWS D1.1 para. 3.3 and table 3.1.
- API 5L grade X52 is grouped P-No. 1/Gr-No. 1, see ASME IX table QW-422
Wide range of qualification
ASME IX allows combination of more welding procedures with deferent essential, see QW-200.4 and base metal thickness qualification from 5 mm to 25.4 mm, see table 451.1.
AWS D1.1 allows base metal thickness qualification from 5 mm to unlimited and the qualified diameter from 100 mm to unlimited, due to qualification on standard pipe , see table 9.10.
ASME IX: unlimited thickness qualification.
ASME: 6G position shall qualify for all positions.
AWS D1.1: base metal thickness qualification from 5 mm to unlimited and a qualified diameter from 100 mm to unlimited, due to qualification on standard pipe and thickness greater than 10mm, see table 9.14 .