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28 Cards in this Set
- Front
- Back
Question 1. List the control and protection circuits that use ?T.
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Answer 1: OTDT reactor trip OTDT rod stop and turbine runback OPDT reactor trip OPDT rod stop and turbine runback Control rod insertion limits
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Question 2. List the control and protection circuits that use Tavg.
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Answer 2: OTDT reactor trip OTDT rod stop and turbine runback OPDT reactor trip OPDT rod stop and turbine runback Rod control system Pressurizer level control Steam dump control Feedwater isolation P-12 C-16
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Question 3. Describe the reactor trips associated with RCS flow.
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Question 1: List the control and protection functions that receive a pressurizer pressure signal.
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Answer 1: High pressure reactor trip (2/4 2385 psig) PORV block valve low-pressure closure (2/4 2185 psig) P-11 (2/3 1970 psig) Low pressure reactor trip (2/4 1940 psig) Low pressure safety injection (2/4 1830 psig) OTDT reactor trip OTDT rod stop and turbine runback Pressurizer pressure control Core subcooling monitor
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Question 2: List the control and protection functions that receive a pressurizer level signal.
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Answer 2: High level reactor trip (2/3 > 92%) when > P-7 (10% power) CVCS charging flow control Pressurizer pressure control Low level heater cutoff (17% level) B/U heaters energized (5% above program level)
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1. What restricts the accuracy of the wide range RVLIS indication?
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Answer 1. One or more RCPs must be running.
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2. What restricts the accuracy of the narrow range RVLIS indication?
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Answer 2. No RCPs must be running.
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4. List the RVLIS inputs and outputs.
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5. List the anticipated RVLIS narrow and wide range indications for different RCP operating conditions.
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6. List the alarms associated with RVLIS.
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Question 1. List the inputs to the Core Subcooling Monitor.
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Answer 1. 25 Core exit thermocouples 3 Thermocouple reference junction RTDs 2 WR Loop Thot 2 WR Loop Tcold 1 WR pressure 2 NR pressure
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Question 2. What determines the specific values used to generate the Core Subcooling Monitor annunciators?
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Answer 2. The position of the reactor trip breakers.
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Question 1. What parameters are monitored to determine whether the reactor core safety limit has been exceeded?
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Answer 1. RCS pressure and temperature versus reactor power
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Question 2. What is the maximum RCS pressure safety limit?
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Answer 2. 2735 psig
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Question 1. List the control and protection circuits that use ?T.
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Answer 1: OTDT reactor trip OTDT rod stop and turbine runback OPDT reactor trip OPDT rod stop and turbine runback Control rod insertion limits
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Question 2. List the control and protection circuits that use Tavg.
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Answer 2: OTDT reactor trip OTDT rod stop and turbine runback OPDT reactor trip OPDT rod stop and turbine runback Rod control system Pressurizer level control Steam dump control Feedwater isolation P-12 C-16
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Question 3. Describe the reactor trips associated with RCS flow.
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Question 1: List the control and protection functions that receive a pressurizer pressure signal.
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Answer 1: High pressure reactor trip (2/4 2385 psig) PORV block valve low-pressure closure (2/4 2185 psig) P-11 (2/3 1970 psig) Low pressure reactor trip (2/4 1940 psig) Low pressure safety injection (2/4 1830 psig) OTDT reactor trip OTDT rod stop and turbine runback Pressurizer pressure control Core subcooling monitor
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Question 2: List the control and protection functions that receive a pressurizer level signal.
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Answer 2: High level reactor trip (2/3 > 92%) when > P-7 (10% power) CVCS charging flow control Pressurizer pressure control Low level heater cutoff (17% level) B/U heaters energized (5% above program level)
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1. What restricts the accuracy of the wide range RVLIS indication?
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Answer 1. One or more RCPs must be running.
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2. What restricts the accuracy of the narrow range RVLIS indication?
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Answer 2. No RCPs must be running.
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4. List the RVLIS inputs and outputs.
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5. List the anticipated RVLIS narrow and wide range indications for different RCP operating conditions.
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6. List the alarms associated with RVLIS.
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Question 1. List the inputs to the Core Subcooling Monitor.
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Answer 1. 25 Core exit thermocouples 3 Thermocouple reference junction RTDs 2 WR Loop Thot 2 WR Loop Tcold 1 WR pressure 2 NR pressure
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Question 2. What determines the specific values used to generate the Core Subcooling Monitor annunciators?
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Answer 2. The position of the reactor trip breakers.
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Question 1. What parameters are monitored to determine whether the reactor core safety limit has been exceeded?
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Answer 1. RCS pressure and temperature versus reactor power
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Question 2. What is the maximum RCS pressure safety limit?
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Answer 2. 2735 psig
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