OPERATION
3.18.0.1
FIRE DETECTION AND SUPPRESSION SYSTEMS
FIRE DETECTION AND SUPPRESSION SYSTEMS
The mining shovel is equipped with the following systems: –
CHECKFIRE SC-N ELECTRIC DETECTION AND ACTUATION SYSTEM
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DRY CHEMICAL FIRE SUPPRESSION SYSTEM LT-A-101
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LIQUID AGENT FIRE SUPPRESSION SYSTEM LVS
The CHECKFIRE SC-N system provides automatic fire detection and automatic or manual actuation of the fire suppression systems. If the CHECKFIRE SC-N system detects a fire it will automatically actuate the suppression systems in two steps. First the DRY CHEMICAL FIRE SUPPRESSION SYSTEM LT-A-101 will be actuated and after a 20 second delay the LIQUID AGENT FIRE SUPPRESSION SYSTEM LVS will be actuated. The dry chemical portion of the twin agent system is primarily responsible for the suppression. Although the LVS wet chemical solution is primarily intended for cooling, it can also aid in suppression by two means: –
The water content of the solution cools the fuel and the surroundings surface areas. Cooling the surrounding surface areas minimizes the change for reflash.
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Forming a film over the fuel, which aids in securing against reflash.
For detailed description of the above systems refer to the separate Inspection and Maintenance Manuals filed in volume 2 binder.
WARNING THE FIRE SYSTEM MUST BE OPERABLE AT ALL TIMES! In the event of fire, an inoperable fire detection and surpression system may lead to serious injury or death. Before operating the Shovel make sure the sytems function correctly Carry out inspection and maintenance according to the separate manuals CHECKFIRE SC-N ELECTRIC DETECTION AND ACTUATION SYSTEM and FIRE SUPPRESSION SYSTEMS in volume 2 Binder.
REMARKS: This section covers only such information necessary for the operator to understand operation of the fire detection and actuation system. All other information i.e. placing the system in service, daily inspection, functional tests, maintenance and trouble shooting are contained in the separate manuals.
PC4000-6
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