Text

Rev 0 to COLR for Cycle 7
	ML20072B562
Person / Time
Site:	Waterford
Issue date:	08/11/1994
From:	; ENTERGY OPERATIONS, INC.
To:	;
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ML20072B538	List: ML20072B534; ML20072B552; ML20072B562;
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ENTERGY OPERATIONS WATERFORD 3 CORE OPERATING LIMITS REPORT FOR CYCLE 7 REVISION 0 PDR

WATERFORD 3 j CORE OPERATING LIMITS REPORT Cycle 7, REVISION 0 INDEX Eage I. INTRODUCTION 3 II. AFFECTED TECHNICAL SPECIFICATIONS 3 III. CORE OPERATING LIMITS 4 IV. METHODOLOGIES 7 V. LIST OF FIGURES 8 VI. LIST OF TABLES 17 2

WATERFORD3 CORE OPERATING LIMITS REPORT Cycle 7, REVISION 0

1. INTRODUCTION This CORE OPERATING LIMITS REPORT (COLR) has been prepared in accordance with the requirements of Waterford 3 Technical Specification 6.9.5 for Waterford 3 Cycle 7. The core operating 1.imits have been developed using the NRC approved methodologies specified in Section IV. This is the initial issuance of the Cycle 7 COLR.

II. AFFECTED TECIINICAL SPECIFICATIONS

1) 3.1.1.1 Shutdown Margin - Any Full Length CEA Withdrawn

2) 3.1.1.2 Shutdown Margin - All Full Length CEA Fully Interted

3) 3.1.1.3 Moderator Temperature Coefficient

4) 3.1.2.9 Boron Dilution

5) 3.1.3.1 Movable Control Assemblies - CEA Position

6) 3.1.3.6 Regulating CEA Insertion Limits

7) 3.1.3.7 Part Length CEA Insertion Limits

8) 3.2.1 Linear Heat Rate

9) 3.2.3 Azimuthal Power Tilt - Tq

10) 3.2.4 DNBR Margin

11) 3.2.7 Axial Shape Index

12) 3.9.1 Boron Concentration 3

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III. CORE OPERATING LIMITS The operating limits for the specifications listed are presented below:

1) 3.1.1.1 - Shutdown Margin - Any Full Length CEA Withdrawn The SHUTDOWN MARGIN shall be greater than or equal to 5.15% Ak/k when Ta vg si greater than 200 F or 2.0% Ak/k when Tavg is less than or equal to 200 F.

2) 3.1.1.2 - Shutdown Margic - All Full Length CEA Fully Inserted The SHUTDOWN M ARGIN shall be greater than or equal to that shown in Figure 1.

3) 3.1.1.3 - MODERATOR TEMPER ATURE COEFFICIENT The Moderator Temperature Coefficient (MTC) shall be:

a) Less positive than + 0.5 x 10-4 Ak/k/ F whenever THERMAL POWER is s 70%

of RATED THERMAL POWER, and b) Less positive than 0.0 x 10-4 Ak/k/ F wheneverTHERMAL POWER is > 70% of l RATED THERMAL POWER, and c) Less negative than -3.3 x 10-4 Ak/k/ F at all levels of THERMAL POWER.

4) 3.1.2.9 - BORON DILUTION 1

Limiting Condition for Operation j With one or both start-up channel high neutron flux alarms inoperable, do not operate the plant in the configurations prohibited by Table I through 5 for the current Mode. {

Action !

With one or both start-up channel high neutron flux alarms inoperable, the RCS boron j concentration shall be determined at the applicable monitoring frequency specified in J Tables 1 through 5. j i

Surveillance Requirements !

Each required boron dilution alarm shall be adjusted to less than or equal to twice (2x) the existing neutron flux (cps) at the following frequencies:

a. At least once per 5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months if the reactor has been shut down less than 25 hours2.893519e-4 days 0.00694 hours 4.133598e-5 weeks 9.5125e-6 months , )

4

b. At least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months if the reactor has been shut down greater than or equal to 25 hours2.893519e-4 days 0.00694 hours 4.133598e-5 weeks 9.5125e-6 months but less than 7 days;

c. At least once per 7 days if the reactor has been shut down greater than or equal to 7 days.

5) 3.1.3.1 - MOVABLE CONTROL ASSEMBLIES - CEA POSITION With one or more full-length or part-length CEAs trippable but misaligned from any other CEAs in its group by more than the Technical Specification 3.1.3.1 allowed value, I

operation in Modes 1 and 2 may continue, provided that core power is reduced in accordance with Figure 2.

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6) 3.1.3.6 - REGULATING CEA INSERTION LIMITS The regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits shown on Figure 3.

7) 3.1.3.7 - PART LENGTil CEA INSERTION LIMITS The part length CEA group shall be limited to the insertion limits shown on Figure 4.

8) 3.2.1 - LINEAR IIEAT RATE j The linear heat rate shall be maintained:

a. Within the region of acceptable operation of Figure 5.

b. Within the region of acceptable operation of Figure 6, when COLSS is out of service.

9) 3.2.3 - AZIMUTIIAL POWER TILT T y The measured AZIMUTHAL POWER TILT shall be maintained s; 0.03.

10) 3.2.4 - DNBR MARGIN The DNBR limit shall be maintained by one of the following methods:

5

l a) When COLSS is in service and neither CEAC is operable: maintain COLSS ]

calculated core power less than or equal to COLSS calculated core power I operating limit based on DNBR decreased by 13% RATED THERMAL POWER.

b) When COLSS is out of service and at least one CEAC is operable: operate within the Region of Acceptable Operation shown on Figure 7, using any operable CPC channel. !

l c) When COLSS is out of service and neither CEAC is operable: operate within the Region of Acceptable Operation shown on Figure 8, using any operable CPC channel, j i

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11) 3.2.7 - AXIAL SH APE INDEX j l

The AXIAL SHAPE INDEX (ASI) shall be maintained within the following limits:

COLSS OPERAHLE

-0.22 s ASI s +0.27 for THERMAL POWERS 2 70% of RATED THERMAL POWER

-0.27 s ASI s +0.27 for THERMAL POWERS < 70% of RATED THERMAL POWER COLSS Out of Service

-0.17 s ASI s +0.22 for THERMAL POWERS 2 70% of RATED THERMAL POWER

-0.22 s ASI s +0.22 for THERMAL POWERS < 70% of RATED THERMAL POWER

}

12) 3.9.1 - BORON CONCENTRATION j i

While in Mode 6, the RCS boron concentration shall be maintained sufficient to ensure that the more restrictive of the following reactivity conditions is met:

a. Either K err of 0.95 or less, or

b. A boron concentration of greater than or equal to 1720 ppm.

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IV. METIIODOLOGIES The analytical methods used to determine the core operating limits listed above are those previously reviewed and approved by the NRC in:

1. "The ROCS and DIT Computer Codes for Nuclear Design," CENPD-266-P-A, April 1983; and "C-E Methodology for Core Designs Containing Gadolinia-Urania Burnable Absorber,"

CENPD-275-P-A, May 1988. Methodology for the limit on Shutdown Margins, MTC, and the Regulating CEA Insertion Limits.

2. "C-E Method for Control Element Assembly Ejection Analysis," CENPD-0190-A, January 1976. Methodology for the Regulating CEA Insertion Limits and Azimuthal Power Tilt.

3. " Modified Statistical Combination of Uncertainties" CEN-356(V)-P-A, May 1988, Methodology for the limits on the DNBR Margin and the ASI.

4. " Calculative Methods for the C-E Large Break LOCA Calculation Model For The Analysis of C-E and W Designed NSSS," CENPD-132, Supplement 3-P-A, June 1985.

Methodology for the limits on the MTC, Linear Heat Rate, Azimuthal Power Tilt and ASI.

5. " Calculative Methods for the C-E Small Break LOCA Evaluation Model," CENPD-137-P, August 1974: Supplement 1, January 1977. Methodology for the limits on the MTC, Linear lleat Rate, Azimuthal Power Tilt and ASI.

6. "CESEC - Digital Simulation of a Combustion Engineering Nuclear Steam Supply System",

j CENPD-107, December 1981. Methodology for the limits on the Shutdown Margins, MTC, Movable Control Assemblies - CEA Position, Regulating CEA Insertion Limits, Part Length CEA Insertion Limits and Azimuthal Power Tilt.

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V. LIST OF FIGURES Figure 1. Shutdown Margin Versus Cold Leg temperature Figure 2. Required Power Reduction After CEA Deviation Figure 3. CEA Insertion Limits Versus Thermal Power Figure 4. Part Length CEA Insertion Limit Versus Thermal Power Figure 5. Allowable Peak Linear Heat Rate Versus Core Inlet temperature Figure 6. Allowable Peak Linear Heat Rate Versus Core Inlet temperature (COLSS Out of Service)

Figure 7. DNBR Margin Operating Limit Based on Core Protection Calculators (COLSS Out of Service, CEAC Operable)

Figure 8. DNBR Margin Operating Limit Based on Core Protection Calculators (COLSS Out of Service, Both CEACs Inoperable) 8

Shutdown Margin as a Function of Cold leg Temperature 6

i 5

(500 F,4.10%)

m :

44 w

a h3 S Region of Acceptable Operation l 8 l 3 2 i

5 l

l 1

(400 F,1.0%)

i 0 !

0 100 200 300 400 500 600 Cold Leg Temperature F Figure 1 9

9 Required Power Reduction After Single CEA Deviation

c 30

$o 3 25 36 xs e E 20

$o n.

u 8 15

- -e a e e

T E 10 E2 EE s- 5 0 m , ,

0 15 30 45 60 Tene AtorCEA Deviation (Minutes)

When core power isreduced to 60% of rated power per this limit curve, further reduction is not required by this specification ,

Figure 2

11 l H3M0d 7VWH3H1'SA S11Hfl NOI183SNI V33 '

. E 380013

FRACTION OF RATED THERMAL POWER p o e p o o o o 9 - .

. . s W W 8 8 8 8 8 8 8 g-Q:- . . . . .-- . . . .

/ LONG TERM STEADY STATEi g- -INSERTION LIMIT .

(%

8" si - g

/ -

. / s g i - 8, -

/

/ SHORT TERM STEADY STATE

. INSERTION LIMIT jf k f p g -g - o /

a

, . )/

2

= g . . -

)f I T

E

> = J/ ..

/

I

/[

3

'E g E s

- a ' m z m O Z A

E W - Qi -

E R

5 l =-8 -

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g -

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!=

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(sayoul g g t t) 4lwn uolpesul o elots Apoets wJe1S uol U e i 3

?

i E

- 8 *l 2 1

>- t 5

= 1 8 24

$ f 5

i 1 3 p}

01 ]

l i 86"2 si o

d5 =

lo j 1

j 3

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g :s S

Iln.

2 I

(seyoul g gg) gwn uotposul tuelsuosi 1

o EEERSE,ySES*

(*/,) Jamod lowJoyl 12

Allowable Peak Linear Heat Rate vs Tc (13.4 kw/ft at 557.5 F) 13.4 Unocceptable 3 Operation i

13 I.2 - /

1 1

)' Acceptable Operation (13.1 kw/ft at 520 F) 13 l L L 'l ll 510 520 530 540 550 560 Initial Core Coolont inlet Temperature F i Figure 5 13 .

l i

t l

l Allowable Peak Linear Heat Rate vs Tc For COLSS out of Service (13.8 kw/ft at 557.5 6 13.8

.2 go Unacceptable

/g 13.7 gi operation iE=EE 13.6

/

1s c E /

Acceptable r ij6 g3

/ operation ap 13.5 -

f. O (13.5 kwllt at 520 0 g5 6

13.4 , , , , m ,

510 515 520 525 530 535 540 545 550 555 560 initial Cose Coolant inlet Temperatuse F Figure 6 f

1 COLSS Out of Service DNBR Limit Line 2.5

. Acceptable Operation -

Minimum one CEAC Operable 2.4 -

E (0.0.2.40) (.22,2.40) z O 2.3 E

g Unacceptable Operation m c 5 2.2 -

2 o

2.1 -

( .17,2.07) 2 ,

-0.3 -0.2 -0.1 0 0.1 0.2 0.3 Core Average ASI Figure 7 DNBR Margin Operating Limit Based on CPCs (COLSS out of Service, CEACs Operable)

COLSS out of Service DNBR Limit Line 2.8 4 Acceptable Operation 2.7 .

CEACs inoperable E

z O 2.6 - -

(0.0,2.6) (.22,2.6)

E c 5 2.5 - -

g Unacceptable Operation a

2.4 - -

( .17,24) 2.3 : : : : :

-0.3 -0.2 - 0.1 0 0.1 0.2 0.3 Core Average ASI Figure 8 DNBR Margin Operating Limit Based on CPCs (COLSS out of Service, CEACs Inoperable)

List of Tables

1. Required Monitoring frequency for Backup Boron Dilution as a Function of Operating Charging Pumps and Plant Operating Modes for Keg > 0.98.

2. Required Monitoring frequency for Backup Boron Dilution as a Function of Operating Charging Pumps and Plant Operating Modes for 0.98 2 Kc g > 0.97.

3. Required Monitoring frequency for Backup Boron Dilution as a Function of Operating Charging Pumps and Plant Operating Modes for 0.97 2 Ke g > 0.96.

4. Required Monitoring frequency for Backup Boron Dilution as a Function of Operating Charging Pumps and Plant Operating Modes for 0.96 2 Ke g > 0.95.

5. Required Monitoring frequency for Backup Boron Dilution as a Function of Operating Charging Pumps and Plant Operating Modes for Kc g s 0.95.

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TABLE 1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR KerrGREATER-THAN 0.98 Kerr >0.98 OPERATIONAL Number of Ooeratine Charcine Pumos*

MODE O 1 2 3 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months Operation not allowed **

4 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Operation not allowed **

5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months Operation not allowed **

RCS filled 5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months Operation not allowed **

RCS partially drained 6 Operation not allowed **

Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.

- The precluded number of charging pumps shall be verified to be inoperable by racking out their motor circuit breakers.

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TABLE 2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCrlON OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR .

Kerr GREATER-THAN O.97 AND LESS THAN OR EQUAL TO O.98 l

0.98 2 Kerr>0.97 OPERATIONAL Number of Ooeratine Charging P'ungs*

MODE O 1 2 3 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 2.0 hours0 days 0 hours 0 weeks 0 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months Operation not allowed **

i 4 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months Operation not allowed **

5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 1.0 hours0 days 0 hours 0 weeks 0 months Operation not allowed **

RCS filled 5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months Operation not allowed **

RCS partially drained 6 Operation not allowed **

Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.

- The precluded number of charging pumps shall be verified to be inoperable by racking out their motor circuit breakers.

x

.1 I

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I 1

1 I

TABLE 3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR l Keg GREATER-THAN O.96 AND LESS THAN OR EQUAL TO O.97 l 0.97 2 Keg >0.96 OPERATIONAL Number of Ooeratine Charcine Pornos

MODE O 1 2 3 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 3.0 hours0 days 0 hours 0 weeks 0 months 1.25 hours2.893519e-4 days 0.00694 hours 4.133598e-5 weeks 9.5125e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 4 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months Operation not allowed **

5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months Operation not allowed **

RCS filled 5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months Operation not allowed **

RCS partially drained 6 Operation not allowed **

Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.

- The precluded number of charging pumps shall be verified to be inoperable by racking out their motor circuit breakers.

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TABLE 4 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DE'EGION AS A FUNGION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR KerrGREATER-THAN 0.95 AND LESS THAN OR EQUAL TO O.96 0.96 it Kerr >0.95 OPERATIONAL Number of Ooeratine Charcine Pumos*

MODE O 1 2 3 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 4.0 hours0 days 0 hours 0 weeks 0 months 2.0 hours0 days 0 hours 0 weeks 0 months 1.0 hours0 days 0 hours 0 weeks 0 months 4 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 2.25 hours2.893519e-4 days 0.00694 hours 4.133598e-5 weeks 9.5125e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months Operation not allowed **

5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months Operation not allowed **

RCS filled 5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2.0 hours0 days 0 hours 0 weeks 0 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months Operation not allowed **

RCS partially drained !

6 Operation not allowed **

Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.

- The precluded number of charging pumps shall be verified to be inoperable by racking out their motor circuit breakers.

l 21

~

TABLE 5 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Kerr LESS THAN OR EQUAL TO 0.95 Kerr s0.95 .

OPERATIONAL Number of Ooeratine Chareine Pumos*

MODE O 1 2 3 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 5.0 hours0 days 0 hours 0 weeks 0 months 2.0 hours0 days 0 hours 0 weeks 0 months 1.0 hours0 days 0 hours 0 weeks 0 months 4 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 3.0 hours0 days 0 hours 0 weeks 0 months 1.0 hours0 days 0 hours 0 weeks 0 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 3.0 hours0 days 0 hours 0 weeks 0 months 1.25 hours2.893519e-4 days 0.00694 hours 4.133598e-5 weeks 9.5125e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months RCS filled 5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months 1.0 hours0 days 0 hours 0 weeks 0 months Operation not allowed **

RCS partially drained 6 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 2.25 hours2.893519e-4 days 0.00694 hours 4.133598e-5 weeks 9.5125e-6 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months Operation not allowed **

Charging pump OPERABILITY for any period of time shall constitute OPERABILITY for the entire monitoring frequency.

- The precluded number of charging pumps shall be verified to be inoperable by racking out their motor circuit breakers.

22

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ML20072B562

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