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7 Cards in this Set
- Front
- Back
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What signals will automatically stop the Main Steam Enclosure supply fan?
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* Safety Injection Signal (SIS) * Low temperature at the supply fan's suction.
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What two (2) electrical interlocks allow starting the Fuel Building supply air fans?
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* Normal exhaust fan must be running in fast speed. * Supply system recirculation damper must be open.
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How are the Fuel Building and Auxiliary Building HVAC safety-related pump room coolers interlocked?
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Electrically interlocked to start when the associated pump starts.
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State four the signals that will result in a Control Room Ventilation Isolation Signal (CRVIS).
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a. Control Room Supply High Gaseous Activity b. Fuel Building Isolation Signal (FBIS) c. Containment Isolation Signal Phase "A" (CISA) d. Containment Purge High Gaseous Activity e. Containment Atmosphere High Gaseous Activity f. Manual
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What happens to the Control Room Air Conditioning Units when a Control Room Ventilation Isolation Signal (CRVIS) is generated?
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They operate in recirculation mode with part of the flow diverted through the filter absorber unit.
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Briefly explain the four actions that the Control Building Ventilation Systems perform automatically on a Control Room Ventilation Isolation Signal (CRIVS).
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a. Control Building Normal supply and exhaust secures and isolates. b. Both Control Room A/C units start. c. Both Control Room filter adsorbed trains start. d. Both Control Room pressurization units start.
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Some of the Auxiliary Building Unit Heaters use electric heaters as their source of heat. What source of heat is used by the rest of the unit heaters?
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Plant Heating System (Hot water, GA)
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