CEDMCS Flashcards
Which of the following will cause a CEA Withdrawal Prohibit (CWP)?
A. 2 of 4 Hi PZR Press Channel Pre-trip
B. Tave greater than Tref by 6 degrees F
C. Control Channel NI from RRS
A
Which of the following will cause an Automatic Withdrawal Prohibit (AWP)?
A. 2 of 4 Hi PZR Press Channel Pre-trip
B. SBCS automatic demand and permissive met.
C. Turbine Load Index from RRS
B
Part Strength CEAs use which material as a neutron absorber? A. Inconel B. Boron Carbide C. Hafnium D. Erbium
A
Shutdown Group CEAs have ___(1)___. Regulating Group CEAs have ___(2)___.
A. (1) 4 fingers; (2) 12 fingers ONLY
B. (1) 12 fingers; (2) 12 fingers ONLY
C. (1) 12 fingers; (2) 4 fingers ONLY
D. (1) 12 fingers; (2) 4 fingers OR 12 fingers
D
CEDM Motor Generator sets are powered by ___(1)___. The reactor will trip if ___(2)___.
A. (1) NGN-L03 and NGN-L10; (2) both are de-energized
B. (1) NGN-L03 and NGN-L10; (2) either is de-energized
C. (1) NGN-L06 and NGN-L13; (2) both are de-energized
D. (1) NGN-L06 and NGN-L13; (2) either is de-energized
A
Unit 3 is at 100% power with all systems in a normal lineup.
CEA 01 slips from its fully withdrawn position to 75” withdrawn.
Its position is currently ___(1)___ by PC pulse counter and ___(2)___ by RSPT.
A. (1) 75”; (2) 75”
B. (1) 75”; (2) 150”
C. (1) 150”; (2) 75”
D. (1) 150”; (2) 150”
C
Unit 3 is at 100% power with all systems in a normal lineup.
CEA 01 drops from its fully withdrawn position to fully inserted.
Its position is currently ___(1)___ by PC pulse counter and ___(2)___ by RSPT.
A. (1) 0”; (2) 0”
B. (1) 0”; (2) 150”
C. (1) 150”; (2) 0”
D. (1) 150”; (2) 150”
A
The phase current lights on B05 are directly powered by: A. PNA-D25 and PNB-D26 B. PNC-D27 and PND-D28 C. NNN-D11 and NNN-D12 D. Output from the CEDM M-G sets
C
When withdrawing a group of CEAs in Manual Group, motion will stop when:
A. The PC pulse counter for a single CEA reaches the Upper Electrical Limit
B. The PC pulse counter for a single CEA reaches the Upper Group Stop
C. The PC pulse counter for the group reaches the Upper Electrical Limit
D. The PC pulse counter for the group reaches the Upper Group Stop
B
How does a loss of PNC-D27 affect CEDMCS?
A. Loss of ability to withdraw any CEAs in any mode
B. Loss of logic power causes all CEAs to drop
C. Approximately 3/4 of Rod Bottom Lights energize
D. Approximately 1/4 of Rod Bottom Lights energize
C
How does a loss of PND-D28 affect CEDMCS?
A. Loss of ability to withdraw any CEAs in any mode
B. Loss of logic power causes all CEAs to drop
C. Approximately 3/4 of Rod Bottom Lights energize
D. Approximately 1/4 of Rod Bottom Lights energize
D
Which indication is sufficient by itself to consider a Shutdown CEA fully withdrawn?
A. Pulse Counter >= 147.75 inches
B. RSPT >= 145.25 inches
C. CEA UEL light is on
D. CEA Position Out of Limits alarm is clear
C
Unit 3 is at 100% power with all systems in a normal lineup.
The main turbine trips. All systems respond as designed.
LCO 3.1.7, Regulating Control Element Assembly Insertion Limits, Condition A must be entered ___(1)___. PDIL alarm circuit (Condition D) is currently ___(2)___.
A. (1) immediately; (2) inoperable
B. (1) two hours after the trip; (2) inoperable
C. (1) immediately; (2) operable
D. (1) two hours after the trip; (2) operable
D
Unit 1 is at 100% power with all systems in a normal lineup.
CEA 15 (Regulating Group 5) slips to 120” withdrawn.
Entry into each of the following LCOs is required EXCEPT:
A. LCO 3.1.7 Condition A, CEA inserted beyond transient insertion limit
B. LCO 3.1.7 Condition D, PDIL Circuit Inoperable
C. LCO 3.1.5 Condition A, CEA Alignment
D. LCO 3.2.4 Condition B, DNBR out of limits with COLSS inoperable
A
Unit 2 is at 100% power with all systems in a normal lineup.
After consulting with component engineering, an unqualified part was installed in Reactor Trip Circuit Breakers ‘A’ and ‘C’ and they must be declared inoperable.
What action is required?
A. Open RTCB ‘A’ OR ‘C’ within one hour
B. Open RTCB ‘A’ AND ‘C’ within one hour
C. Open RTCB ‘A’ OR ‘C’ immediately
D. Open RTCB ‘A’ AND’ C’ immediately
D
