sec.238Other explosion-protected plant powered by battery or internal combustion engine

### sec.238 Other explosion-protected plant powered by battery or internal combustion engine Battery, or internal combustion engine, powered explosion-protected plant, other than a load-haul dump vehicle, must be fitted with at least 1 automatic methane detector to detect the general body concentration of methane around the plant. The detector must automatically— activate a visible alarm to warn the operator when the concentration exceeds 1%; and either— trip the electricity supply to the plant’s electrical motors when the concentration exceeds 2%; or stop the plant’s internal combustion engine when the concentration exceeds 1.25%. This section does not apply to plant that is being operated— by a person using a portable methane detector that gives an audible and visible alarm when the concentration exceeds 1% and 1.25%; and in a location inspected periodically by a person using a portable methane detector. In this section— periodically , for inspecting plant in a location in an ERZ1, means at least twice during a shift at approximately evenly spaced intervals. (sec.238-ssec.1) Battery, or internal combustion engine, powered explosion-protected plant, other than a load-haul dump vehicle, must be fitted with at least 1 automatic methane detector to detect the general body concentration of methane around the plant. (sec.238-ssec.2) The detector must automatically— activate a visible alarm to warn the operator when the concentration exceeds 1%; and either— trip the electricity supply to the plant’s electrical motors when the concentration exceeds 2%; or stop the plant’s internal combustion engine when the concentration exceeds 1.25%. (sec.238-ssec.3) This section does not apply to plant that is being operated— by a person using a portable methane detector that gives an audible and visible alarm when the concentration exceeds 1% and 1.25%; and in a location inspected periodically by a person using a portable methane detector. (sec.238-ssec.4) In this section— periodically , for inspecting plant in a location in an ERZ1, means at least twice during a shift at approximately evenly spaced intervals. - (a) activate a visible alarm to warn the operator when the concentration exceeds 1%; and - (b) either— (i) trip the electricity supply to the plant’s electrical motors when the concentration exceeds 2%; or (ii) stop the plant’s internal combustion engine when the concentration exceeds 1.25%. - (i) trip the electricity supply to the plant’s electrical motors when the concentration exceeds 2%; or - (ii) stop the plant’s internal combustion engine when the concentration exceeds 1.25%. - (i) trip the electricity supply to the plant’s electrical motors when the concentration exceeds 2%; or - (ii) stop the plant’s internal combustion engine when the concentration exceeds 1.25%. - (a) by a person using a portable methane detector that gives an audible and visible alarm when the concentration exceeds 1% and 1.25%; and - (b) in a location inspected periodically by a person using a portable methane detector.