This section does not apply to:
Marine and pipeline terminals, natural gas processing plants, refineries, or tank farms other than those at industrial sites.
The requirements of 1910.253 shall apply to such use;
The National Fire Protection Association Standard for the Storage and Handling of Liquefied Petroleum Gases at Utility Gas Plants, NFPA No. 59-1968, shall apply to such use;
Low-pressure (not in excess of one-half pound per square inch or 14 inches water column) LP-Gas piping systems, and the installation and operation of residential and commercial appliances including their inlet connections, supplied through such systems. For such systems, the National Fire Protection Association Standard for the Installation of Gas Appliances and Gas Piping, NFPA 54-1969 shall apply.
LP-Gas refrigerated storage systems;