SRO Tech Spec Systems Review

Question 1

Per TS 3.4.6, RCS Loops, what is required for Operability in Mode 4?

Answer 1

2 RCS or RHR loops

Question 2

Per TS 3.4.7, RCS Loops Filled, What is required for Operability in Mode 5 with Loops Filled?

Answer 2

1 RHR loop
AND
1 more RHR loop OR 2 S/G water level 420” > WR level inst

Question 3

Per TS 3.4.8, RCS Loops Drained, what is required for Operability in Mode 5 with Loops Drained?

Answer 3

2 RHR loops OPERABLE
with 1 RHR loop in operation

Question 4

Per TS 3.5.2, ECCS Operating, what is required for Operability in Modes 1-3?

Answer 4

Two ECCS trains shall be OPERABLE

Question 5

Per TS 3.5.2, ECCS Operating, what is required for an operable Train?

Answer 5

CCP/SI/RHR

Question 6

Per TS 3.5.3, ECCS Shutdown, what is required for Operability in Mode 4?

Answer 6

1 ECCS train OPERABLE

Question 7

Per TS 3.5.3, ECCS Shutdown, what is required for an operable Train?

Answer 7

CCP/RHR

SI is not required!

Question 8

Per TS 3.9.4, Refueling RHR + Coolant Hi Level, what is required to be Operable in Mode 6 with ≥ 23 ft above the top of reactor vessel flange?

Answer 8

1 RHR loop OPERABLE

Question 9

Per TS 3.9.5 Refueling RHR + Coolant Level Low, what is required to be Operable in Mode 6 with < 23 ft above the top of reactor vessel flange?

Answer 9

2 RHR loops OPERABLE with 1 RHR loop in operation

Question 10

If the RWST is INOPERABLE per TS 3.5.4, RWST, must the actions for an inoperable ECCS System be performed?

Answer 10

If RWST is INOPERABLE, do NOT cascade Tech Specs to the ECCS Trains. Although the specs would NOT be met, per LCO 3.0.6, the actions of the RWST address it.

Question 11

What is the basis for having ≥23 ft over irradiated fuel in racks per TS 3.7.14, SFP Level?

Answer 11

Minimum level meets the assumptions of iodine DF following a fuel handling accident.

Question 12

If there is an inoperability of the 250 vDC system, what else should be considered?

Answer 12

ESW Train is INOP and other unit is affected with cross tie open

Question 13

If the normal source of power (250 vDC) is out of service for a CRID, how is operability affected?

Answer 13

Inverter INOP, but CRID BUS is OPERABLE.

Question 14

If a CRID is powered from CRP-3, how is operability affectd?

Answer 14

Inverter and Bus are bother INOP

Question 15

What is the Tech Spec minimum level for the CST and the basis behind that level?

Answer 15

182,000 gallons to Maintain plant in hot sby for 9 hrs on PORVs w/LOOP
-OR-
Capability of holding the Unit in Mode 3 for 2 hrs followed by a 4 hr cooldown to RHR at 50°/hr

Question 16

When MUST the TDAFP be operable when bringing a unit back online?

Answer 16

Mode 4 when SG is relied upon for heat removal. However… SR 3.7.5.2 is NOT required to be performed for the turbine driven AFW pump until 24 hours after ≥ 850 psig in the steam generator.

Question 17

Per TS 3.1.1, SDM, what must be done is SDM is outside of the limits provided in the COLR when required?

Answer 17

Borate to restore (15 minutes)

Question 18

What is the purpose of maintaining Seal Line Resistance per TS 3.5.5, Seal Injection Flow?

Answer 18

if too SMALL, ECCS injection flow may be less than required for core cooling during a LB LOCA

Question 19

What are the electrical requirements for ESW per tech specs?

Answer 19

Required - 2 offsite sources + EDG + DC
Opp Unit - 1 offsite (EP must be I/S to count) + EDG + DC

Question 20

What is the highest lake temperature allowed per TS 3.7.9, UHS?

Answer 20

86.9°F

Question 21

How does the inoperability of an ESW Pump affect the Opposite Unit when cross-ties are open?

Answer 21

If ESW PUMP is INOP, EDG is INOP and opp Unit Hdr is INOP, so their EDG is INOP (cross-ties open)

Question 22

How does the inoperability of an ESW header affect the Opposite Unit when cross-ties are open?

Answer 22

If Hdr is INOP, the PUMP could still be OPERABLE. If so, the other unit is not affected.

Question 23

What is the basis of the Main Staem Safety Valves per TS 3.7.1, MSSVs?

Answer 23

Operability of SVs ensures secondary steam pressure will be limited to 110% of desired pressure during most severe anticipated operational transient

Question 24

Per TS 3.7.4, SG PORVs, when is a SG PORV Operable?

Answer 24

Considered OPERABLE when capable of fully opening from control room

Question 25

Per TRO 8.3.8, Radiation Monitoring Instrumentation, when is a PORV Rad Monitor INOPERABLE?

Answer 25

If PORV manual isolation valve is closed, Rad Mon is INOP or If PORV controller is in manual, Rad Mon is INOP

Any time PORV will not automatically open

Question 26

What is the design basis of the SG PORV per TS 3.7.4, SG PORVs

Answer 26

To cool down the unit to RHR entry conditions in Manual following a SGTR

Question 27

Per TS 3.4.11, PORVs, what must be done if a Pressurizer PORV is inoperable with manual available?

Answer 27

close block valve & maintain power within 1 HR

Question 28

Per TS 3.4.11, PORVs, what must be done if a Pressurizer PORV is inoperable with manual NOT available?

Answer 28

close block valve & remove power within 1 HR

Question 29

Per TS 3.4.11, PORVs, what must be done if a Pressurizer PORV Block Valve is INOPERABLE?

Answer 29

PORV to Man 1hr

Question 30

What is the ECCS Acceptance criteria per 10 CFR 50.46?

Answer 30

• Peak clad temperature < 2200°F
  
  • Max clad oxidation < 17%
  • H2 generation < 1% hypothetical maximum
  • Core maintains a coolable geometry
  • Long term abundant cooling

Question 31

Per tech specs, what are the temperature limits for containment?

Answer 31

Upper: 60-100°F
Lower: 60-120°F

Question 32

Per tech specs, what are the pressure limits for containment?

Answer 32

-1.5 psig - +0.3 psig

Question 33

Per TS 3.4.3, RCS Pressure vs Temperature, what is the maximum heatup rate for the RCS?

Answer 33

< 60°F/ 1 hr

Question 34

Per TS 3.4.3, RCS Pressure vs Temperature, what is the maximum cooldown rate for the RCS?

Answer 34

< 100°F / 1 hr

Question 35

Per TS 3.4.2, RCS Minimum Temp, what is the mimum temperature allowed? What must bd done if not med?

Answer 35

541°F
Be in M2 with keff < 1 in 30 minutes

Question 36

Per TS 3.4.3, RCS Pressure vs Temperature, what must be down if the RCS heatup or cooldown rates are violated in Modes 1-4?

Answer 36

Restore in 30 minutes

Question 37

Per TS 3.4.3, RCS Pressure vs Temperature, what must be down if the RCS heatup or cooldown rates are violated in Modes 5-6?

Answer 37

Restore Immediately