Section 192.11 - Petroleum gas systems(a) Each plant that supplies petroleum gas by pipeline to a natural gas distribution system must meet the requirements of this part and NFPA 58 and NFPA 59 (incorporated by reference, see§192.7).(b) Each pipeline system subject to this part that transports only petroleum gas or petroleum gas/air mixtures must meet the requirements of this part and of ANSI/NFPA 58 and 59.(c) In the event of a conflict between this part and NFPA 58 and NFPA 59 (incorporated by reference, see§192.7), NFPA 58 and NFPA 59 prevail.Amdt. 192-78, 61 FR 28783, 6/6/1996, as amended by Amdt. 192-119, 80 FR 180, 1/5/2015; 80 FR 46847, 8/6/2015