053-4 Wyo. Code R. § 4-6
(a) Fire fighting equipment shall not be tampered with and shall not be removed for other than the intended purpose.
(b) Fire extinguishers and other fire fighting equipment shall be suitable located and plainly labeled as to their type and method of operation.
(c) Combustible waste material and residues shall be kept to a minimum, stored in covered metal receptacles and disposed of daily.
(d) Access to exits or fire extinguishers shall not be blocked or obscured by clothing, materials or equipment.
(e) Portable extinguishers shall be maintained in a fully charged and operable condition, and kept in their designated places at all times when they are not being used.
(f) All fire extinguishers shall be maintained, inspected, and hydrostatically tested in accordance with 1910.157 of the Wyoming Occupational Health and Safety 1910-General Rules.
(g) Every well servicing unit shall have two (2) non-freeze type 30 B:C (or equivalent) rated fire extinguishers, approved by a nationally recognized testing laboratory. The above is minimum and many occasions may warrant more equipment of a larger scale.
(h) Carbon tetrachloride extinguishers are not permitted.
(i) Every welding operation shall have a suitable extinguisher available.
(j) Extreme caution shall be used with open flames around oil and gas operations.
(k) Natural or liquefied petroleum gas (LPG) shall not be used to operate spray guns or other pneumatic equipment.
(l) There shall be no smoking on location within 120 feet of well bore or any other flammable substances. All persons shall leave all smoking materials, such as cigarettes, cigars, pipes, matches, and lighters in their vehicles or change rooms, so as to prevent anyone from inadvertently smoking on location. Any engine being refueled shall be shut off during refueling.
(m) There shall be a least two (2) "No Smoking" signs conspicuously displayed at each well location while there is well service work in progress. Signs shall be constructed in accordance with 1910.145, Wyoming Occupational Health and Safety 1910-General Rules and Regulations.
(n) No open flames shall be permitted within 120 feet from the well or well bore if hydrocarbons or other volatile substances are in the well. Welding operations shall be conducted in accordance with 1910.252.d. of the Wyoming Occupational Health and Safety 1910-General Rules and Regulations.
053-4 Wyo. Code R. § 4-6