API 650 126.96.36.199 API 650 188.8.131.52 mmayocwi (Petroleum) (OP) 2 Sep 16 19:40 Per this clause in the code can an erector of a tank use a SWPS on a pressure boundary weld? RE: API 650 184.108.40.206 granQC (Mechanical) 6 Sep 16 08:05 Hello! I think, Article V of ASME Sec. IX could guide you if you can utilize the SWPSS (suffice with the conditions and/or requirements) for welding pressure boundary/parts. Ciao!