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28 Cards in this Set

  • Front
  • Back
Question 1. List the control and protection circuits that use ?T.
Answer 1: OTDT reactor trip OTDT rod stop and turbine runback OPDT reactor trip OPDT rod stop and turbine runback Control rod insertion limits
Question 2. List the control and protection circuits that use Tavg.
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
Question 3. Describe the reactor trips associated with RCS flow.
Question 1: List the control and protection functions that receive a pressurizer pressure signal.
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
Question 2: List the control and protection functions that receive a pressurizer level signal.
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)
1. What restricts the accuracy of the wide range RVLIS indication?
Answer 1. One or more RCPs must be running.
2. What restricts the accuracy of the narrow range RVLIS indication?
Answer 2. No RCPs must be running.
4. List the RVLIS inputs and outputs.
5. List the anticipated RVLIS narrow and wide range indications for different RCP operating conditions.
6. List the alarms associated with RVLIS.
Question 1. List the inputs to the Core Subcooling Monitor.
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
Question 2. What determines the specific values used to generate the Core Subcooling Monitor annunciators?
Answer 2. The position of the reactor trip breakers.
Question 1. What parameters are monitored to determine whether the reactor core safety limit has been exceeded?
Answer 1. RCS pressure and temperature versus reactor power
Question 2. What is the maximum RCS pressure safety limit?
Answer 2. 2735 psig
Question 1. List the control and protection circuits that use ?T.
Answer 1: OTDT reactor trip OTDT rod stop and turbine runback OPDT reactor trip OPDT rod stop and turbine runback Control rod insertion limits
Question 2. List the control and protection circuits that use Tavg.
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
Question 3. Describe the reactor trips associated with RCS flow.
Question 1: List the control and protection functions that receive a pressurizer pressure signal.
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
Question 2: List the control and protection functions that receive a pressurizer level signal.
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)
1. What restricts the accuracy of the wide range RVLIS indication?
Answer 1. One or more RCPs must be running.
2. What restricts the accuracy of the narrow range RVLIS indication?
Answer 2. No RCPs must be running.
4. List the RVLIS inputs and outputs.
5. List the anticipated RVLIS narrow and wide range indications for different RCP operating conditions.
6. List the alarms associated with RVLIS.
Question 1. List the inputs to the Core Subcooling Monitor.
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
Question 2. What determines the specific values used to generate the Core Subcooling Monitor annunciators?
Answer 2. The position of the reactor trip breakers.
Question 1. What parameters are monitored to determine whether the reactor core safety limit has been exceeded?
Answer 1. RCS pressure and temperature versus reactor power
Question 2. What is the maximum RCS pressure safety limit?
Answer 2. 2735 psig