Hydrogen Sulfide (H2S) Compliance
& RRC Form H-9
Hydrogen sulfide (H2S) exposure is one of the greatest health and safety risks encountered in the oil and gas industry. The Railroad Commission of Texas (RRC) requires operators to protect the general public from the harmful effects of H2S. Statewide Rule 36 (SWR 36) applies to many common oil and gas activities and operations such as drilling, workovers, production, storage, injection, and transportation of hydrocarbon fluids that contain H2S as a constituent. These requirements typically apply to operations where the concentration of H2S is equal to or greater than 100 parts per million (ppm). SWR 36 requires different compliance levels based on the risk of H2S exposure that the general public bears. This risk (and the required level of compliance) is determined based on the 100 ppm and 500 ppm Radius of Exposure (ROE) calculations.