In downstream oil and gas, LPG: a person trained, qualified and certified to perform certain welding process or processes based on welding procedure specification(s) using a semi-automatic or full automatic welding machine (footnote 30: PNS 03-1:2020) [Section 3.67, Rule 3, DTI Department Administrative Order No. 22-11, Series of 2022, The New Technical Regulation Concerning the Mandatory Certification of Liquefied Petroleum Gas (LPG) Pressure Vessels, Systems, Services and Ancillary Products]
