In downstream oil and gas, LPG: the marking applied to newly manufactures LPG cylinders by embossing, hard metal stamping, engraving, casting, or other similar methods as prescribed by the applicable PNS, or as may be determined by the DOE and the Department of Trade and Industry (DTI) in the case of generic LPG cylinders. This marking shall remain legible during the lifespan of the LPG cylinder [Section 4(nn), LPG Industry Regulation Act of 2021; Section 3.1(oo), DOE-DTI Joint Department Circular No. JDC2022-05-001, Rules and Regulations Implementing Republic Act No. 11592]
In downstream oil & gas, LPG: the marking applied to the newly manufactured LPG Cylinders by embossing, hard metal stamping, engraving, casting, or other similar methods as prescribed by the applicable PNS, or as may be determined by the DOE and the Department of Trade and Industry (DTI) in the case of generic LPG Cylinders. This marking shall remain legible during the lifespan of the LPG Cylinder [Section 3.1(vv), DOE Department Circular No. DC2022-11-0037, Guidelines on the Registration and Issuance of License to Operate to Qualified DOE-Regulated LPG Industry Participants and Penalizing Certain Prohibited Acts]
Note: Under DOE Department Circular No. DC2022-11-0037, the term is written as “Permanent Marking”.