sec.240Non-explosion-protected plant

### sec.240 Non-explosion-protected plant This section applies to non-explosion-protected plant, other than portable plant, powered by a battery or an internal combustion engine. The plant 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 0.25%; and an audible or visible alarm to warn the operator when the detector fails in service; and trip the electricity supply to the plant’s electrical motors or stop its internal combustion engine— when the concentration exceeds 0.5%; and within 3 minutes after the detector fails in service. (sec.240-ssec.1) This section applies to non-explosion-protected plant, other than portable plant, powered by a battery or an internal combustion engine. (sec.240-ssec.2) The plant must be fitted with at least 1 automatic methane detector to detect the general body concentration of methane around the plant. (sec.240-ssec.3) The detector must automatically— activate— a visible alarm to warn the operator when the concentration exceeds 0.25%; and an audible or visible alarm to warn the operator when the detector fails in service; and trip the electricity supply to the plant’s electrical motors or stop its internal combustion engine— when the concentration exceeds 0.5%; and within 3 minutes after the detector fails in service. - (a) activate— (i) a visible alarm to warn the operator when the concentration exceeds 0.25%; and (ii) an audible or visible alarm to warn the operator when the detector fails in service; and - (i) a visible alarm to warn the operator when the concentration exceeds 0.25%; and - (ii) an audible or visible alarm to warn the operator when the detector fails in service; and - (b) trip the electricity supply to the plant’s electrical motors or stop its internal combustion engine— (i) when the concentration exceeds 0.5%; and (ii) within 3 minutes after the detector fails in service. - (i) when the concentration exceeds 0.5%; and - (ii) within 3 minutes after the detector fails in service. - (i) a visible alarm to warn the operator when the concentration exceeds 0.25%; and - (ii) an audible or visible alarm to warn the operator when the detector fails in service; and - (i) when the concentration exceeds 0.5%; and - (ii) within 3 minutes after the detector fails in service.