Week 6 Flashcards
Which of the following Containment parameter values would require action per Tech Specs within
an hour when in Mode 1?
A. Pressure of -0.5 psig.
B. Pressure of 1.7 psig.
C. Average temperature of 114°F.
D. Average temperature of 121°F.
A. Pressure of -0.5 psig.
• Cooldown in progress. • Tc 290° F. • RCS pressure 400 psia. • Engineering reports that the Pressurizer safety setpoints are all discovered to be inadvertently set at 2420 psia. Which of the following is true? Tech Specs...
A. require that one SDC system suction line relief be placed in service within 30 minutes.
B. require that one SDC system suction line relief be placed in service immediately.
C. does not require any special action because the plant pressure is less than 500 psia.
D. does not require any special action because the relief setpoint error is conservative.
B. require that one SDC system suction line relief be placed in service immediately.
• RU-8 and RU-9 are in alarm.
• Packing leakage on CHB-UV-523, Regenerative Heat Exchanger Isolation, has been found, and quantified.
This is described as:
A. Pressure Boundary Leakage.
B. Identified Leakage.
C. Interconnected System Leakage.
D. Unidentified Leakage.
B. Identified Leakage.
• Unit is in Mode 3.
• ‘B” Diesel Generator has been tagged out for an on-line maintenance.
• The air start system is also tagged out and has been depressurized (both receivers have been depressurized to < 150 psig).
What LCO condition(s) is the Unit in?
A. LCO 3.8.1 condition B only.
B. LCO 3.8.3 condition F only.
C. LCO 3.8.1 condition B and 3.8.3 condition E.
D. LCO 3.8.1 condition B and 3.8.3 condition F
D. LCO 3.8.1 condition B and 3.8.3 condition F
• Unit 1 is in mode 2 performing a Reactor Startup
The Shutdown CEAs must be withdrawn to greater than or equal to _______________ inches.
147.75
• Unit 1 is operating at 100% power.
• CST level is reported to be 28 feet at 1200.
Which of the following correctly describes the extensions (if any) that can be applied.
Operability of the RMWT must be verified by…
A. 1600 and the next verification can be completed no later than 0400 the next day.
B. 1600 and the next verification can be completed no later than 0700 the next day.
C. 1700 and the next verification can be completed no later than 0500 the next day.
D. 1700 and the next verification can be completed no later than 0800 the next day.
B. 1600 and the next verification can be completed no later than 0700 the next day.
• Unit 1 was manually shutdown for a refueling outage.
• LPSI pump “A” is in a boron recirculation alignment.
• SDC is not in service at this time.
• RCS temperature is 230 degrees and slowly lowering.
• RCS pressure is 360 psia and stable.
• RCPs 2A and 2B are in operation.
• CST level is reported as 28 feet.
Which (if any) LCO(s) should be declared not met?
A. No LCO entry required at this time.
B. 3.6.6 Containment Spray System only.
C. 3.7.6 Condensate Storage Tank only.
D. 3.6.6 Containment Spray System and 3.7.6 Condensate Storage Tank.
C. 3.7.6 Condensate Storage Tank only.
• LCO 3.7.6 Condensate Storage Tank, states that the CST level shall be ≥ 29.5 ft. with an applicability of Modes 1, 2, and 3; and Mode 4 when the Steam Generator is relied upon for heat removal.
Why is LCO 3.7.6 not applicable in Modes 5 and 6?
The CST is not required in Mode 5 or Mode 6 because the AFW System is not required (i.e., we are not relying on the SG for heat removal)
Refer to LCO 3.7.6 Condensate Storage Tank (CST)
What is the basis for having an allowed Completion Time of 7 days to restore CST level to within limit?
An Operable RMWT is available for an AFW water source (the backup water supply) and there is a low probability of an event requiring the use of water from the CST occurring during this period.
LCO 3.2 Power Distribution Limits (3.2.1, 3.2.2, 3.2.3, 3.2.4, and 3.2.5) are applicable in Mode 1 with THERMAL POWER >20% RTP. What is the reason for the applicability basis only when >20% RTP?
The incore neutron detectors that provide input to COLSS, which then calculates the operating limits, are inaccurate due to the poor signal to noise ratio that they experience at relatively low power levels.
