053-10 Wyo. Code R. § 10-3
(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 Engineering Standards of ASME and ANSI.
(b) All positive displacement pumps associated with a drilling rig 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 maximum allowable working pressure of the pump, pressure vessel, piping 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 the 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) Valves of the quick-closing type shall not be used on the discharge line from a pump.
(k) Clamps and safety cables or chains shall be used to fasten the kelly hose at the standpipe end to the derrick and at the swivel end to the swivel housing.
(l) Discharge hoses under pressure shall be secured by clamps and safety cables or chains.
(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.
053-10 Wyo. Code R. § 10-3