053-8 Wyo. Code R. § 8-3
(a) All pressure vessels, safety pressure relief valves, pumps, fittings, piping and hoses shall be constructed, installed, operated, inspected and repaired to conform to the ASME Boiler and Pressure Vessel Code, Section VIII - 1971.
(b) All power-driven pumps shall be equipped with a safety pressure relief valve and an operating gauge.
(c) The safety pressure relief valve shall be set to discharge at a pressure not in excess of the established working pressure of the pump, pressure vessel, pipe and fittings.
(d) A guard shall be placed around the shearing pin and spindle of a safety pressure relief valve.
(e) The emissions discharged from a safety pressure relief valve shall be piped to a place where they will not endanger employees.
(f) There shall be no valve between a pump and its safety pressure relief valve.
(g) There shall be no valve in the discharge opening of a safety pressure relief valve nor in the discharge pipe connected thereto.
(h) The piping connected to the pressure side and discharge side of a safety pressure relief valve shall not be smaller than normal pipe size opening of said valve.
(i) The piping on the discharge side of a safety pressure relief valve shall be properly secured.
(j) Clamps and safety cables shall be used to fasten the kelly hose at the standpipe end to the derrick and at the swivel end to the swivel housing.
(k) Discharge hoses under pressure shall be secured by clamps and safety cables or chains.
(l) All discharge lines (pressure lines) shall be placed so as not to be under any mobile equipment nor shall any mobile equipment be placed over any such lines.
(m) Fittings, hoses, pumps, pressure vessels, piping and safety pressure relief valves shall be properly installed and shall be rated to coincide with the discharge pressure of the pressure producing source.
053-8 Wyo. Code R. § 8-3