Mich. Admin. Code R. 460.860 - Wellhead fittings
Rule 10.
(1)
Wellhead connections shall be designed and installed in accordance with
principles of design and installation illustrated on plate 1A, appendix A,
unless specific approval is secured in writing from the chief
engineer.
(2) Master or control
valve shall be installed with valve stem not less than 2, nor more than 4 feet
above the ground level, provided that whenever tubing or siphon is installed in
any well, the valve and wellhead fitting construction and spacing will
necessarily be governed by special conditions in each separate case.
(3) Wheels on valves shall be left and
secured in place to facilitate emergency opening or closing of valves with an
emergency long stemmed wrench or key.
(4) A space free from surface obstructions
shall be kept clear on the stem or wheel side of each control gate or valve, so
that workmen can approach wells and use long stemmed wrenches or keys in
opening or closing valves in case of fire.
Notes
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