Which of the following doors are control building pressure boundary doors?
control building chiller room doors, mechanical equip room EAST
CBI actuates. How will equipment respond to CBI signal?
control room envelope outlet vent paths isolate, Train A control building filter starts. TSC inlet and outlet paths isolate, 30 mins later TSC inlet path opens
CB chiller has not been run for several weeks and is at ambient temp.
What is the max number of starts per hour allowed for this control building chiller?
two
CB chiller has been run recently and is at normal op temp.
What is the max number of starts per hour allowed for this CB chiller?
one
What is a major concern with stopping all control building chiller room ventilation?
buildup of refrigerant gasses in room
Why is there a fifteen min time delay for restarting a control building chiller after stopping it?
prevent damage to compressor and compressor motor by allowing at least fifteen min for the refrigerant cycle pressures to equalize (anti-recycle lockout)
Why is compressor C1C the preferred unit when restoring control building air bank pressure from 1600 to 2200 psig?
C1A and C1B cannot be continuously run more than 30 min at a time
What is the function of recirculation control valves?
maintain total system flow rate to ensure minimum flow through chilled water pumps and preclude challenges to chiller unit trips
