DECAY RIVER / DECAY CLOSED Flashcards
(11 cards)
What makes a Decay River pump INOPERABLE?
Strainer ΔP ≥6 psid or bearing oil leak >7 drops/hr.
What is the purpose of the vacuum breaker on Decay River pump discharge?
Prevents high starting currents and water siphoning from the coolers.
What happens to DR-V-1A/B during pump operation?
OPENS on pump START, CLOSES on pump STOP, and continues to full OPEN if pump trips during stroke.
What is bypassed during the full range of travel for DR-V-1A/B?
The torque switch.
What cooling system is recommended if MU-P-1A/C are in service for more than 4 hours?
Use of NS cooling.
What is the normal position of DC-V-2/65, and what must be done for emergencies?
Normally in DEFEAT in full cooling position; must be placed in ENABLE with a handwheel for emergencies.
When are both Decay River trains considered INOPERABLE?
If river level is <274’.
What happens to DC-V-19s on loss of air?
They fail OPEN, causing the tank to overflow.
What is the alternative if DC-V-19s cannot be opened or normal MU is unavailable?
Fill via NSCCW cross-connects at MUP cooling.
What actions must be taken if DC-P-1A trips?
Stop MU-P-1A, BS-P-1A, and DH-P-1A.
What is the required action if DC-P-1A oiler is leaking 1 dpm at 100% power?
Enter a 72-hour LCO due to train INOPERABILITY.
