Section R. 408.15737 - Drilling fluid tanksRule 5737.
(1) A pit or tank used to circulate flammable materials shall be located not less than 100 feet from the well. Equivalent safety measures shall be taken where terrain and location conditions do not permit maintaining such distance.(2) A fixed drilling fluid gun used for jetting shall be pinned or hobbled when in use and unattended.(3) When it is necessary for an employee to enter a drilling fluid tank, the requirements of R 408.15725, if applicable, and the rules contained in general industry safety standard, Part 90. Confined Space Entry, being R 408.19001 et seq. of the Michigan Administrative Code, shall be followed.(4) An electric motor-driven blower used for ventilation shall be of an appropriate electrical classification for the area in which the blower is located.Mich. Admin. Code R. 408.15737