Section 460.20302. Compressor station piping.

(1) An operator shall install and test gas piping, other than instrument, control, and sample piping, in accordance with these rules.

(2)     An operator shall identify all emergency valves and controls by signs. An operator shall identify important gas pressure piping by signs or color coding to indicate its function.

(3)       An operator shall ensure that fuel gas lines within a compressor station conform to both of the following provisions:

(a)     Are provided  with  master  shutoff valves  located  outside   of   a building.

(b)      Are equipped with pressure limiting devices to prevent the maximum allowable operating pressure from being exceeded by more than 10%.

(4)     An operator shall equip the air piping within a  compressor  station that is part of an air starter with a check valve in the starting air line near each engine to prevent backflow from the engine into the air piping system. An operator shall also place a similar check valve in the main air line on the immediate outlet side of the air tank or tanks. An operator shall install equipment for cooling the air and removing the moisture and entrained oil between the starting air compressor and the air storage tank.

History: 1998-2000 AACS; 2009 AACS.