Section R. 324.1102 - Definitions; N to WRule 1102. As used in this part:
(a) "NACE" means the national association of corrosion engineers.(b) "New H2S well" means an H2S well that is drilled or completed after September 2, 1987.(c) "Radius of exposure" means the distance, in feet, that results when appropriate values are substituted for the variables in the following equation: RoE = (A x B x C) 0.6258 where
A = 1.589 for a 100-ppm radius of exposure.
B = the mole fraction concentration of hydrogen sulfide in the released gas.
C = the maximum volume of gas determined to be available for release in cubic feet per 24 hours. The radius of exposure is the distance from a point of release at which a specified concentration of hydrogen sulfide would occur if gas of a known concentration of hydrogen sulfide were released at a known rate.
(d) "Safety equipment" means, at a minimum, all of the following items: (iv) Portable dry chemical fire extinguishers.(vi) Flare guns and flares.(vii) Battery-operated lanterns.(viii) Portable electronic hydrogen sulfide detectors.(ix) Warning signs that have the word "Danger" or "Caution" followed by the words "Poison Gas."(x) Two copies of the owner's contingency plan.(xi) Not less than 2 portable, self-contained, pressure-demand breathing apparatus that have a 30-minute air supply.(xii) A supply of compressed breathable air or oxygen that is sufficient to recharge each self-contained breathing apparatus at least once.(e) "Well class" means the category into which an H2S well falls or, in the case of an H2S well to be drilled, the category into which it is expected that the well will fall, as follows: (i) "Class I H2S well" means a well that has a 100-ppm radius of exposure of more than 300 feet and a hydrogen sulfide content in the gas of not less than 300 ppm.(ii) "Class II H2S well" means a well that has a 100-ppm radius of exposure of not less than 100 feet and not more than 300 feet and a hydrogen sulfide content in the gas of not less than 300 ppm.(iii) "Class III H2S well" means a well that has a 100-ppm radius of exposure of less than 100 feet and not less than 30 feet and a hydrogen sulfide content in the gas of not less than 300 ppm.(iv) "Class IV H2S well" means a well that has a 100-ppm radius of exposure of less than 30 feet and a hydrogen sulfide content in the gas of not less than 300 ppm.Mich. Admin. Code R. 324.1102