053-6 Wyo. Code R. § 6-7
(a) [Reserved]
(b) Tanks for flammable materials shall be set so that if the tanks leak or rupture, the flammable materials will drain or be contained away from the well and equipment by the use of ditches or dikes or their equivalent.
(c) All fixed mud guns used for jetting shall be pinned or hobbled when unattended.
(d) Hoses used for jetting operations shall be manned, and there shall be an employee stationed at the pump controls to shut down the pressure in the event of emergency.
(e) When necessary to enter a tank which contained toxic fluid, the rules and regulations as specified in Chapter 4, Section 5 ., shall apply.
(f) All discharge lines shall be safely secured.
(g) Portable tanks shall be located where it is not possible for personnel or equipment to come into contact with overhead power lines.
(h) All portable tanks in excess of five (5) feet in height, used in testing and treating, shall be equipped with fixed metal ladder with:
(i) All tanks over five (5) feet in height, used in testing and treating, shall be equipped with fixed permanent risers when it is necessary to circulate or flow fluids into top of tank. No employee shall jump from one tank top to another.
053-6 Wyo. Code R. § 6-7