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Coal Mining Safety and Health Regulation 2017
sec.240Non-explosion-protected plant
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### 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.