Text

Enclosure 5: Case Study 1: Structure of TS for Ultrasonic Flow Meters - Meeting Summary of the January 27 & 28 Meeting with Nrc/Tstf
	ML090640439
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Site:	Davis Besse, Crystal River
Issue date:	01/28/2009
From:	; - No Known Affiliation
To:	; Office of Nuclear Reactor Regulation
	Marrero, Abe, NRR/DIRS, 415-8531
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Enclosure 5 Case Study 1: Structure of TS for Ultrasonic Flow Meters -

Meeting Summary of the January 27 & 28 Meeting with NRC/TSTF Dated March 9, 2009

0e,Ix Case Study 1: Structure of TS for Ultrasonic Flow Meters The NRC has required that Davis-Besse and Crystal River revise the Reactor Protection System (RPS) Specification to specifically address the use of ultrasonic flow meters (UFMs) in order to obtain approval of their power uprate amendments.

Whether such changes to the Specifications were necessary for those plants has been discussed, but is not the issue in this case study. In both cases, the NRC and the licensee agreed to Specifications that do not follow the ITS format, content, and usage rules.

The Crystal River TS predated the Davis-Besse TS.

Crystal River LCO 3.3 INSTRUMENTATION 3.3.1 Reactor Protection System (RPS)

Instrumentation LCO 3.3.1 Four channels of RPS instrumentation for each Function in Table 3.3.1-1 shall be OPERABLE.

Table 3.3.1-1 CONDITIONS ACTI ON D.1 SURVEILLANCE REQUIREMENTS ALLOWABLE VALUE FUNCTION

1. Nuclear Overpower -

a. High Setpoint 1J, 2(')

F SR 3.3.1.1 SR 3.3 1.2 SR 3.3.1.5",')

SR 3.3.1.7 104.9% RTP (dl

103.3% RTP ('

(d)

With secondary heat balance based on required high accuracy instrumentation.

(e)

With secondary heat balance not based on required high accuracy instrumentation.

To this point, the Specification is internally consistent. The high setpoint value required for Operability depends on the accuracy of the instrument.

However, SR 3.3.1.2 requires the use of the UFMs unless Condition J has been entered:

4

SR 3.3.1.2

-NOTES-

1.

Not required to be performed until 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after THERMAL POWER is > 15% RTP.

2.

High accuracy instrumentation is required.to be utilized when performing calorimetric secondary heat balance comparison unless Condition I has been entered.

Verify calorimetric secondary heat balance. is 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 5 2% RTP greater than power range channel output. Adjust power range channel output if calorimetric exceeds power range channel output by > 2% RTP.

This wording is unprecedented in the ITS as it's based on being in a Condition instead of Operability or meeting the LCO.

Condition J states:

J. Secondary heat balance J.1 Reduce THERMAL POWER 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months not based on required-to_<2568 MW high accuracy instrumentation.

AND J.2 Reduce Nuclear 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Overpower - High Setpoint to < 103.3%

RTP.

Per the Notes in Table 3.3.1-1, the LCO is met when not utilizing the UFMs provided the Allowable Value is < 103.3% RTP. The LCO does not require that the secondary heat balance be based on the required high accuracy instrumentation.

Condition J and the SR Note form a circular reference. Enter Condition J if the UFMs not used for the SR but the UFMs don't have to be used if in Condition J. I don't have UFMs, I enter J, I no longer need UFMs, I exit J.

The wording in the SR note would allow the UFM to be unavailable and to stay at the higher power level until the next performance of SR 3.3.1.2 ("when performing.")

Both the Condition and the SR are inconsistent with the Operability requirements in the LCO table.

Both the Condition and the SR are inconsistent with what's required for the Limiting Condition for.Operation, as operation at the lower Allowable Value allows the system to perform its specified safety function.

5

Davis-Besse A different approach was taken in Davis-Besse LCO:

LCO 3.3.1 Four channels of RPS instrumentation for each Function in Table 3.3.1-1 shall be OPERABLE:

The ultrasonic flow meter (UFM) instrumentation shall be used to perform SR 3.3.1-2 when TERMAL POWER is > 50% RTP.

The second portion of the LCO is a detail of SR performance, not a Limiting Condition for Operation.

Table 3.3.1-1

1. High Flux-

a.

High Setpoint 1,2(a),3(b)

D SR 3.3.1.1 SR 3.3.1.2 SR 3.3.1. 3 (cXd)

SR 3.3.1.8 s 104.9% RTP(' with four pumps operating, and

<_ 80.6% RTP when reset for three pumps operating per LCO 3A.4. "RCS Loops - MODES 1 and 2" (e)

S 103.3% RTP when reset per ACTION F due to UFM instrumentation not being used to perform SR 3.3.1.2 when THERMAL POWER Is > 50% RTP.

This construction leaves the Operator in a conundrum. If the UFMs are not available and power is reduced to 103.3%, I now meet Table 3.3.1-1 and appear tobe Operable. There is no other location in the ITS in which a reduced power setpoint from a Required Action is also listed as an Operability requirement.

Action F:

6

F. UFM insitrumentation not used to perform SR3.3.1.2 when THERMAL POWER is

> 50% RTP.

F. (continued)

F.1 NOTE-----

Only required If four reactor coolant pumps. (RCPs) are operating.

Initiate action to reduce THERMAL POWER to

< 98.4% RTP.

F.2 NOTE Only required if three RCPs are operating.

AND F.3 Initiate action to reduce THERMAL POWER to 73.8% RTP.

NOTE.

Only required if four RCPs are operating.

Reset High Flux - High Setpoint Allowable Value to

< 103.3% RTP Immediately Immediately 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months SR 3.3.1.2 SR 3.3.1.2 Au NOTES -

1. Adjust power range channel output If the calorimetric heat balance calculation results exceed power range channel output by

> 2% RTP.

2.

Not required to be performed until 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after THERMAL POWER is _> 15% RTP.

Compare result of calorimetric heat balance calculation to power range channel output..

24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months Again, this causes confusion because the LCO Table states that the LCO is met when the lower setpoint is used. More confusing is the LCO directs how an SR is to be performed (not met).

7

There are several ways that the Specifications could have been made internally consistent. The most straightforward would be to simply retain the Table 3.3.1-1 dual Allowable Values and associated footnotes and eliminate the other changes. The plant must meet one or the other setpoints for the LCO to be met. Any solution would need to apply at all times, not just when the SR is performed.

8

RPS Instrumentation 3.3.1 3.3 INSTRUMENTATION 3.3.1 Reactor Protection System (RPS) Instrumentation LCO 3.3.1 APPLICABILITY:

Four channels of RPS instrumentation for each-Function in Table 3.3.1-1 shall be OPERABLE.

According to Table 3.3.1-1.

ACTIONS CONDITIONS REQUIRED ACTION COMPLETION TIME A.

One channel A.1 Place channel in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable, bypass or trip.

B.

Two channels B.1 Place one channel in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable, trip.

AND B.2 Place second channel 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months in bypass.

C. One or more RCPPM for C.1 Trip the RCPPM(s).

4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months one RCP inoperable.

D.

Required Action and D.1 Enter the Condition Immediately associated Completion referenced in Time of Condition A Table 3.3.1-1 for the or B not met.

Function.

E.

Required Action and E.1.1 Verify 4 RCPs in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months associated Completion operation.

Time of Condition C not met.

AND E.1.2 Reduce THERMAL POWER 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months

<2475 MW~h OR E.2 Enter Condition F 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months (continued)

Crystal River Unit 3 3.3-1 Amendment No. 228

RPS Instrumentation 3.3.1 ACTIONS (conti nued)

CONDITION REQUIRED ACTION COMPLETION TIME F.

As required by F.1 Be in MODE 3.

6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Required Action D.1 and referenced in AND Table 3.3.1-1 or by Required Action E.2.

F.2 Open all CONTROL ROD 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months drive (CRD) trip breakers.

G.

As required by G.1 Open all CRD trip 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Required Action D.1 breakers.

and referenced in Table 3.3.1-1.

H.

As required by H.1 Reduce THERMAL POWER 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Required Action D.1

< 45% RTP.

and referenced in Table 3.3.1-1.

I.

As required by 1.1 Reduce THERMAL POWER 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Required Action D.1

< 20% RTP.

and referenced in Table 3.3.1-1.

J.

Secondary heat balance J.1 Reduce THERMAL POWER 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months not based on required to <2568 MWt.

high accuracy instrumentation.

AND J.2 Reduce Nuclear 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Overpower -

High Setpoint to < 103.3%

RTP.

K.

Required Action and K.1 Be in MODE 3.

6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time of Condition 3 AND not met.

K.2 Open all Control Rod 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months drive (CRD) trip breakers.

Crystal River Unit 3 3.3-2 Amendment No.

228

RPS Instrumentation 3.3.1 SURVEILLANCE REQUIREMENTS f----------7-----------------------------NOTE--------------------------------

Refer to Table 3.3.1-1 to determine which SRs apply to each RPS Function.

SURVEILLANCE FREQUENCY.

SR 3.3.1.1 Perform CHANNEL CHECK.

12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months SR 3.3.1.2 NOTES--------------------

1.

Not required to be performed until 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after THERMAL POWER is

Ž 15% RTP.

2.

High accuracy instrumentation is requiredto be utilized when performing calorimetric secondary heat balance comparison unless Condition J has been entered.

Verify calorimetric secondary heat balance is 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months

2% RTP greater than power range channel output. Adjust power range channel output if calorimetric exceeds power range channel output by > 2% RTP.

SR 3.3.1.3 NOTE---------------------

Not required to be performed until 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after THERMAL POWER (TP) is 2 30% RTP.

Compare out of core measured AXIAL POWER 31 days IMBALANCE (API 0 ) to incore measured AXIAL POWER IMBALANCE (API 1 ) as follows:

(RTP/TP)(APIO - API 1) = imbalance error Perform CHANNEL CALIBRATION if the absolute value of the imbalance error is

Ž 2.5% RTP.

SR 3.3.1.4 Perform CHANNEL FUNCTIONAL TEST.

45 days on a STAGGEREDTEST BASIS (continued)

I Crystal River Unit 3 3.3-3 Amendment No. 228

RPS Instrumentation 3.3.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.3.1.5

NOTES -------------------

1.

Neutron detectors and RC flow sensors are excluded from this Surveillance.

2.

Verification of bypass function is excluded from this Surveillance.

Perform CHANNEL CALIBRATION.

92 days SR 3.3.1.6

NOTE -------.

Neutron detectors and RCPPM current and voltage sensors are excluded from CHANNEL CALIBRATION.

Perform CHANNEL CALIBRATION.

24 months SR 3.3.1.7

NOTE --------------------

Neutron detectors and RCPPM current and voltage sensors and the watt transducer are excluded from RPS RESPONSE TIME testing.

Verify RPS RESPONSE TIME is within limits.

24 months on a STAGGERED TEST BASIS I

Crystal River Unit 3 3.3-4 Amendment No.

152 RT 1 3 1996

RPS Instrumentation 3.3.1 Table 3.3.1-1(naael of 1 Reactor Protection sysem Inst rumentati on APPLICABLE CONDITIONS MODES OR REFERENCED OTHER FROM SPECIFIED REQUIRED CONDITIONS ACT ION D.1 SURVEILLANCE REQUIREMENTS ALLOWABLE VALUE FUNCTION

1. Nuclear Overpower -

a.

High Setpoint

b.

Low Setpoint

2.

RCS High Outlet Temperature

3. RCS High Pressure

4.

RCS Low Pressure

5. RCS Variable Low Pressure

6. Reactor Building High Pressure

7. Reactor Coolant Pump Power Monitor (RCPPM)

8. Nuclear Overpower RCS Flow and Measured AXIAL POWER IMBALANCE

9.

Main Turbine Trip (Control Oil Pressure)

10. Loss of Both Main Feedwater Pumps (Control Oil Pressure)

11. Shutdown Bypass RCS High Pressure 1,2' 2(b) 3 (b) 4Cb) 5 cb) 1,2 1,2 1, 2"*

'1, 2 (a) 1,2,3(,)

1,2 ('

1, 2 (')

> 45% RTP

_ 20% RTP 2 (b )

3 (b) 4 (b): 5 (b)

F SR SR SR SR G

SR SR F

SR SR SR F

SR SR SR SR F

SR SR SR F

SR SR SR SR F

SR SR SR SR SR H

SR SR SR I.

SR SR SR G

SR SR SR 3.3.1.1 3.31.2 3.3.1.55 3.3.1.7 3.3.1.1 3.3.1.5 3.3.1.1 3.3.1.4 3.3.1.6 3.3.1.1 3.3.1.4 3.3.1.6 3.3.1.7 3.3.1.1 3.3.1.4 3.3.1.6 3.3.1.7 3.3.1.1 3.3.1.4 3.3.1.6 3.3.1.1 3.3.1.4 3.3.1.6 3.3.1.1 3.3.1.4 3.3.1.6 3.3.1.7 3.3.1.1 3.3.1.3 3.3.1.5 3.3.1.6 3.3.1.7 3.3.1.1 3.3.1.4 3.3.1.6 3.3.1.1 3.3.1.4 3.3.1.6 3.3.1.1 3.3.1.4 3.3.1.6 104.9% RTP (d) 103.3% RTP (e) 5 5% RTP 618°F s 2355 psig 1900"psig RCS Variable Low Pressure equation in COLR 4 psig More than one pump drawinq

1152 or 14,400 kW Nuclear Overpower RCS Flow and AXIAL POWER IMBALANCE setpoint envelope in COLR 45 psig 55 psig 1820 psig (a)

When not in shutdown bypass operation.

(b)

During shutdown bypass operation with any CRD System (CRDCS) capable of rod withdrawal.

trip breakers in the closed position and the ORD Control (c)

With any CRD trip breaker in the closed position and the CRDCS capable of rod withdrawal.

(d)

With secondary heat balance based on required high accuracy instrumentation.

(e)

With secondary heat balance not based on required high accuracy instrumentation.

(f)

If the as-found channel setpoint is conservative with respect to the Allowable Value (AV),

but outside its predefined as-found acceptance criteria band, then the channel should be evaluated to verify that it is functioning as required before returning the channel to service.

If the as-found instrument.channel setpoint is not conservative with respect to the AV, the channel shall be declared inoperable.

(g), The instrument channel setpoint shall be reset to a value that is within the as-left tolerance of the pre-established In-Plant Setpoint, or a value that is more conservative than the pre-established In-Plant Setpoint: otherwise the channel shall not be returned to OPERABLE status.

The pre-established In-Plant Setpoint and the methodology used to determine the pre-established In-Plant Setpoint, the predefined as-found acceptance criteria band, and the as-left acceptance criteria are specified in the FSAR.

Crystal River Unit 3 3.3-5 Amendment No. 228

RPS Instrumentation 3.3.1 3.3 INSTRUMENTATION

" 3.3.1 LCO 3.3.1 Reactor Protection System (RPS) Instrumentation Four channels of RPS instrumentation for each Function in Table 3.3.1-1 shall be OPERABLE:

AND The ultrasonic flow meter (UFM) instrumentation shall be used to perform SR 3.3.1.2 when THERMAL POWER is > 50% RTP.

APPLICABILITY:

According to Table 3.3.1-1.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One channel inoperable.

A.1 Place channel in bypass or 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months trip.

B. Two channels B.1 Place one channel In trip.

1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable.

AND B.2 Place second channel in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months

.bypass.

C. Required Action and C.1 Enter the Condition Immediately associated Completion referenced in Table 3.3.1-1 Time of Condition A or B for the Function.

not met.

OR Three or more channels inoperable.

Davis-Besse 3.3.1-1 Amendment 279

RPS Instrumentation 3.3.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME D. As required by Required D.1 Be in MODE 3.

6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Action C.1 and referenced in AND Table 3.3.1-1.

D.2 NT Only applicable to Functions 1,a, 3, and 6.

Open all CONTROL ROD 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months drive (CRD) trip breakers.

E. As required by Required E.1 Open all CRD trip breakers.

6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Action C.1 and referenced in Table 3.3.1-1.

F. UFM instrumentation not F.1 NOTE-------

used to perform Only required if four reactor SR 3.3.1.2 when coolant pumps (RCPs) are THERMAL POWER is operating.

> 50% RTP.

Initiate action to reduce Immediately THERMAL POWER to

< 98.4% RTP.

AND F.2 NOTE-----

Only required if three RCPs are operating.

Initiate action to reduce Immediately THERMAL POWER to

<73.8% RTP.

AND Davis-Besse 3.3.1-2 Amendment 279

RPS Instrumentation 3.3.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME F. (continued)

F.3 NOTE Only required if four RCPs are operating.

Reset High Flux - High 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months Setpoint Allowable Value to

< 103.3% RTP SURVEILLANCE REQUIREMENTS

.NOTE Refer to Table 3.3.1-1 to determine which SRs apply to each RPS Function.

SURVEILLANCE FREQUENCY SR 3.3.1.1 Perform CHANNEL CHECK.

12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months SR 3.3.1.2 NOTES

1. Adjust power range channel output if the calorimetric heat balance calculation results exceed power range channel output by

> 2% RTP.

2.

Not required to be performed until 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after THERMAL POWER is _> 15% RTP.

Compare result of calorimetric heat balance 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months calculation to power range channel output.

Davis-Besse 3.3.1-3 Amendment 279

RPS Instrumentation 3.3.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.3.1.3

-NOTES

1.

Neutron detectors are excluded from CHANNEL CALIBRATION.

2.

For Function 8, flow rate measurement sensors may be excluded from CHANNEL CALIBRATION.

Perform CHANNEL CALIBRATION.

23 days on a STAGGERED TEST BASIS SR 3.3.1.4

-NOTES-

1. Adjust the power range channel imbalance output if the absolute value of the offset error is

Ž2.5%.

2.

Not required to be performed until 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after THERMAL POWER is _50% RTP.

Compare results of out of core measured AXIAL 31 days POWER IMBALANCE (API0) to incore measured AXIAL POWER IMBALANCE (API1) as follows:

(RTP/TP)(API0 - API) = offset error.

SR 3.3.1.5 Perform CHANNEL FUNCTIONAL TEST.

46 days on a STAGGERED TEST BASIS SR 3.3.1.6 Perform CHANNEL CALIBRATION.

18 months SR 3.3.1.7 NOTE-For Function 8, flow rate measurement sensors are only required to be calibrated.

Perform CHANNEL CALIBRATION.

24 months Davis-Besse 3.3.1-4 Amendment 279

RPS Instrumentation 3.3.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.3.1.8 NOTE Neutron detectors are excluded from RPS RESPONSE TIME testing.

Verify that RPS RESPONSE TIME is within limits.

24 months on a STAGGERED TEST BASIS Davis-Besse 3.3.1-5 Amendment 279

RPS Instrumentation 3.3.1 Table 3.3.1-1 (page 1 of 2)

Reactor Protection System Instrumentation APPLICABLE CONDITIONS MODES OR REFERENCED OTHER FROM SPECIFIED REQUIRED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS ACTION CA1 REQUIREMENTS VALUE

1. High Flux -

a.

High Setpoint 1,2 (a),3 (b)

D SR 3.3.1.1 S 104.9% RTP(e) with four SR 3.3.1.2 pumps operating, and.

SR 3.3.1.3" )

80.6% RTP when reset SR 3.3.1.8 for three pumps operating per LCO 3.4.4, "RCS Loops - MODES I and 2"

b.

Low Setpoint 2(Q,3(M,4(0, E

SR 3.3.1.1

5% RTP 5If SR 3.3.1.3

2. RC High Temperature 1,2 D

SR 3.3.1.1 S 618 0F SR 3.3.1.5 SR 3.3.1.7

-3. RC High Pressure 1,2(0),3(bI D

SR 3.3.1.1

<*2355 psig SR 3.3.1.5 SR 3.3.1.7 SR 3.3.1.8

4. RC Low Pressure 1,2(a)

D SR 3.3.1.1 Z> 1900 psig SR 3.3.1.5 SR 3.3.1.7 SR 3.3.1.8 (a)

(b)

When not in shutdown bypass operation.

With any CRD trp breaker in the closed position, the CRD System capable of rod withdrawal, and not in shutdown bypass operation.

(c)

If the as-found channel setpoint is conservative with respect to the Allowable Value but outside its predefined as-found acceptance criteria band, then the channel shall be evaluated to verify that it Is functioning as required before returning the channel to service.

(d)

The instrument channel setpoint shall be reset to a value that is within the as-left tolerance around the Limiting Trip Setpoint, or a value that is more conservative than the Umiting Trip Setpoint; otherwise, the channel shall be declared inoperable. The Limiting Trip Setpoint and the methodology used to determine the Limiting Trip Setpoint, the predefined as-found acceptance criteria band and the as-left setpoint tolerance band are specified in the Technical Requirements Manual.

(e)

!5 103.3% RTP when reset per ACTION F due to UFM instrumentation not being used to perform SR 3.3.1.2 when THERMAL POWER Is > 50% RTP.

(f)

During shutdown bypass operation with any CRD trip breaker in the dosed position and the CRD System capable of rod withdrawal.

Davis-Besse 3.3.1-6 Amendment,279

RPS Instrumentation 3.3.1 Table 3.3.1-1 (page 2 of 2)

Reactor Protection System Instrumentation APPLICABLE CONDITIONS MODES OR REFERENCED OTHER FROM SPECIFIED REQUIRED

-SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS ACTION C.1 REQUIREMENTS VALUE

5. RC Pressure - Temperature 1.2(s)

D SR 3.3.1.1 Z (16.25. Tow -

SR 3.3.1. 5(cx")

7899.0) psig SR 3.3. 1. 7 "cxd)

6. Containment High Pressure 1,2,319)

0.

SR 3.3.1.1

<: 4 psig SR 3.3.1.5 SR 3,3.1.6

7. High Flux/Number of 1,2(al D

SR 3.3.1.1

< 55.1% RTP with one Reactor Coolant Pumps On SR 3.3.1.3 pump operating In each SR 3.3,1.8

loop,

< 0.0% RTP with two pumps operating in one loop and no pumps operating In the other loop,

<0.0% RTP with one pump or no pumps operating

8. Flux -AFlux - Flow 1,2D81 0

SR 3.3.1.1 Flux - AFlux - Flow SR 3.3.1.3 Allowable Value envelope SR 3.3.1.4 In COIR SR 3.3.1.7 SR 3.3.1.8

9. Shutdown Bypass High 2(9 3(f) 40 E

SR 3.3.1.1

< 1820 psig Pressure 5(d SR 3.3.1.5 SR 3.3.1.7 (a)

When not in shutdownbypass operation.

(c)

If the as-found channel setpoint is conservative with respect to the Allowable Value but outside its predefined as-found acceptance criteria band, then the channel shall be evaluated to verify that It is funclioning as required before returning the channel to service.

(d)

The instrument channel setpoint shall be reset to a value that is within the as-left tolerance around the Limiting Trip Setpolnt, or a value that is more conservative than the Limiting Trip Setpoint; otherwise, the channel shall be declared inoperable. The Limiting Trip Setpoint and the methodology used to determine the Limiting Trip Setpoint, the predefined as-found acceptance criteria band and the as-left setpoint tolerance band are specified in the Technical Requirements Manual.

(f)

During shutdown bypass operation with any CRD trip breaker in the closed position and the CRD System capable of rod withdrawal.

(g)

With any CRD trip breaker in the closed position and the CRD System capable of rod withdrawal.

Davis-Besse 3.3.1-7 Amendment 279

ML090640439

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