Recommendations set forth in this publication apply to oil and gas producing and gas processing plant operations conducted with hydrogen sulfide present in the fluids being handied. The presence of hydrogen sulfide in these operations also presents the possibility of exposure to sulfur dioxide from the combustion of hydrogen sulfide. Refer to Section 4 for applicability of this standard.
API RP 55-1995 history
1995API RP 55-1995 Recommended Practice for Oil and Gas Producing and Gas Processing Plant Operations Involving Hydrogen Sulfide (SECOND EDITION)
1981API RP 55-1981 RECOMMENDED PRACTICES FOR CONDUCTING OIL AND GAS PRODUCTION OPERATIONS INVOLVING HYDROGEN SULFIDE (First Edition)