Term
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Definition
| Maintain sufficient coolant in the reactor such that the core is not uncovered in the event of a loss of feedwater or as a result of loss of off-site AC Power. |
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Term
| What two sources can RCIC take suction from? |
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Definition
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Term
| State all the places RCIC water can go. |
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Definition
| "Pump discharge to feedwater line, including a test line to the CST, and a minimum flow bypass to the Torus" |
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Term
| Valves that are positioned upon automatic initiation of RCIC |
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Definition
The following valves open: Steam supply isolation valves (MO-2075 and -2076); Pump suction from CST (MO-2102); Min Flow bypass to Torus (CV-2104); Pump Discharge (M0-2016 and MO-2017); Cooling water supply (MO-2096); Steam supply to turbine (MO-2078); Trip Throttle (MO-2080).
The following valves close: |
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Term
| What is the preferred source of RCIC suction? |
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Definition
| CST for the high water quality which permits faster recovery following injections. |
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Term
| Flow setpoint for RCIC injection |
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Definition
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Term
| Turbine auto shut down signals |
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Definition
Turbine overspeed (125% speed-nominally 5625 rpm); High water level (+48"); Low pump suction pressure (15" Hg Vac); High turbine exhaust pressure (50 psig, after 5 sec delay or 125 psig immediately); Group 5 isolation; Manual turbine trip pushbutton on C-04 or MO-2080 hand switch to close.
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Term
| Which turbine auto shut down signal closes the steam admission valve? What is tripped for all the other auto shutdown signals? |
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Definition
| Reactor high water level trips MO-2078 (RCIC steam admission valve). All other signals trip MO-2080 (RCIC trip throttle valve). |
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Term
| What is the purpose of tripping MO-2078 (RCIC steam admission valve) on high rx level? |
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Definition
| Allows auto restart at -47 inches. |
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Term
| Describe the conditions when the steam supply to the RCIC turbine is automatically isolated. |
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Definition
Group 5 Isolation: High flow (44,434 lbm/hr) in the steam supply line with 5 SEC TIME DELAY; High area temperature (187.5 degrees F); Low RCIC steam line pressure (60 psig).
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Term
| Per B.02.03-01, what are the capabilities of the RCIC turbine driven pump? |
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Definition
| RCIC turbine driven pump is capable of maintaining the reactor water level above the top of the core at any pressure above 165 psia with the reactor in the shut down condition. |
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Term
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Definition
MSIVs trip on: Less than 840 psig with mode switch in RUN; Rx Low-Low Level (-47 inches); High Area Temp (195-200 degrees F); 135-140% steam flow.
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Term
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Definition
Rx Low Level (+9 inches) or High Drywell Pressure (1.84 psig)
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Term
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Definition
Non-liquid PCT trips: Fuel pool high rad (50 mR/hr) or Rx Building Plenum High rad (26 mR/hr)
NOTE: these trips are NOT 1-out-of-2 taken twice. |
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Term
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Definition
RWCU trips on: Low-low level (-47 inches); High drywell Pressure 1.84 psig; High Flow (462 gpm); Low Flow (-200 gpm); RWCU room high temperature (170 degrees F).
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Term
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Definition
RCIC trips on: High steam flow (44,434 lbm per hour for 5 seconds); RCIC steam line area high temp (187.5 degrees F); RCIC steam line low pressure (60 psig)
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Term
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Definition
HPCI trips on: HPCI high steam flow (300,000 lbm per hour for 4 seconds); HPCI steam line area temperature (187.5 degrees F); HPCI steam supply line low pressure (100 psig)
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Term
| PCIS Group I reset requirements |
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Definition
Initiation signal must be clear; All MSIV hand switches are placed in CLOSE; Reset pushbutton.
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Term
| PCIS Groups II and III reset requirements |
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Definition
Initiation signal must be clear; All hand switches in the group are placed in CLOSE with exception of MOVs; Reset pushbuttons.
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Term
| PCIS Groups IV and V reset requirements |
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Definition
Initiating signals clear; Reset Pushbuttons.
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