SIM LOIT Review

Question 1

How do CHA-UV-505 and 506 FAIL?

Answer 1

Fail CLOSED on Loss of Air or Power

Question 2

U1 has a LOOP. PKA-M41 has just failed as well. What is status of CBO?

Answer 2

It is re-established with loss of M41

Question 3

What is the purpose of DFWCS “RTO”?

Answer 3

Prevent a post-trip overcooling transient

Question 4

Without Spray Pond support, how long can the EDG’s run?

Answer 4

2.6 Minutes Loaded

15 Minutes Unloaded

Question 5

On a loss of 2 PN busses, what would we expect without Operator action?

Answer 5

RX TRIP and Full ESFAS Actuation

Question 6

On a SIAS and a LOP, what happens to NNN-D11/12/15/16?

Answer 6

D11 and 12 = Transfer to Class MCC’s
D15 = De-energized
D16 (U1/2) = De-Energized
D16(U3) = Transfer to Class MCC

Question 7

When do PZR safeties relieve?

Answer 7

2475 PSIA

Question 8

On a loss of IAA-UV-2 what is impact to CVCS?

Answer 8

515 and 516 close

• UV-2 closes on CSAS “A” and Loss of PKA

Question 9

What are the flow rates for SI PUMPS for a 1 Hour MIN FLOW LIMIT and UNLIMITED run times?

Answer 9

CS = 150 GPM (1 Hour) / 2100 GPM (UNL)
LPSI = 100 GPM (1 Hour)/ 2400 GRPM (UNL)
HPSI = 85 GPM (1 Hour)/ 225 GPM (UNL)

Question 10

What do we classify Primary to Secondary Leakage as?

Answer 10

IDENTIFIED LEAKAGE

Question 11

As PZR LVL lowers, what type of actions would be taken to STOP the lowering (if can’t stop lowering)?

Answer 11

1. Start ALL available CH Pumps
2. Isolate LD
3. Trip RX

Question 12

What alarms would we expect if Letdown was to ISOLATE (Time Critical Action-10 Minutes)?

Answer 12

1. HI REGEN OUTLET TEMP
2. LD LOW PRESSURE
3. LD RAD MONITOR LOW FLOW

Question 13

What are the ways that CHN-UV-231P (Seal Injection Isolation valve) FAILS?

Answer 13

1. Fails Open on Loss of Air/Power

2. Closes on HI-HI (150F) or LO-LO (70F), take open to reset (Temp inst. fails = doesn’t close)

Question 14

The RVLMS normally has a delta of 90F, what would indicate a VOID?

Answer 14

Delta of 200F or HJTC > 700F

Question 15

How is Turbine Cooling Water temperature maintained during Normal Ops?

Answer 15

Adjusting HX Outlet valve and Bypass valve

Question 16

U1 just had NBN-X03 fail. What impact does this failure have on NC Pumps?

Answer 16

NO Effect

Question 17

Both NC”A” and NC”B” pumps have tripped. EW has been cross-tied for Priority Loads. 30 minutes later what is status of the plant, assuming no further OPS actions?

Answer 17

Normal Ops with Letdown secured

Question 18

For the NC PSV’s (614/615) inside CTMT on the return line…what do they ensure?

Answer 18

Closure of CIV’s in event of RCP HP Seal Cooler tube rupture

Question 19

On a Loss of PW at Power, what is performed per the Loss of CW AOP?

Answer 19

Trip RX and Perform SPTA’s

Question 20

PLANT ANNUNCIATORS
Due to the differences in arrangement of power supplies between units, the following will occur on a loss of NKN-M45 with a SIAS:
Units 1 and 2 ___
Unit 3 ___

Answer 20

Units 1 and 2: Loss of ALL annunciators

Unit 3: Loss of 1/2 of the annunciators

• Difference is U3 NNN-D16 backup supply is from PHB-M38 (not a SIAS load shed panel)