Text

Rev 1 to COLR for Cycle 8, for Waterford 3
	ML20095E693
Person / Time
Site:	Waterford
Issue date:	12/14/1995
From:	; ENTERGY OPERATIONS, INC.
To:	;
Shared Package
ML20095E691	List: ML20095E688; ML20095E693;
References
	NUDOCS 9512180089
	Download: ML20095E693 (23)
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I ENTERGY OPERATIONS WATERFORD3 CORE OPERATING LIMITS REPORT FOR CYCLE 8 REVISION 1 1

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. WATERFORD 3

CORE OPERATING LIMITS REPORT

! Cycle 8, REVISION 1 1

INDEX Eggg i I. INTRODUCTION 3 II. AFFECTED TECHNICAL SPECIFICATIONS 3 ,

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III. CORE OPERATING LIMITS 4 IV. hETHODOLOGIES 7 V. LIST OF FIGURES 8 i

VI. LIST OF TABLES 1,8 I 2 l

a - -- u2. - + - + + - , .-.-a-- .. . . .. .. - ~.

l WATERFORD 3 i CORE OPERATING LIMITS REPORT l Cycle 8, REVISION 1 I

L INTRODUCTION This CORE OPERATING LIMITS REPORT (COLR) has been prepared in accordance with the l requirements of Waterford 3 Technical Specification 6.9.5 for Waterford 3 Cycle 8. The core operating limits have been developed using the NRC approved methodologies specified in Section IV. This is Revision 01 of the Cycle 8 COLR. l IL AFFECTED TECHNICAL SPECIFICATIONS i

1) 3.1.1.1 Shutdown Margin - Any Full Length CEA Withdrawn

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

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 j

! 6) 3.1.3.6 Regulating CEA Insertion Limits

7) 3.1.3.7 Part Length CEA Insertion Limits l ,

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8) 3.2.1 Linear Heat Rate l t

l 9) 3.2.3 Azimuthal Power Tilt - Tq l

10) 3.2.4 DNBR Margin

11) 3.2.7 Axial Shape Index l

l 12) 3.9.1 Boron Concentration 4

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. l 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1) 3.1.1.1 - Shutdown Margin - Any Full Length CEA Withdrawn I

The SHUTDOWN MARGIN shall be greater than or equal to 5.15% Ak/k when Tavg is )

greater than 200 F or 2.0% Ak/k when Tavg is less than or equal to 200 F.

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2) 3.1.1.2 - Shutdown Margin - All Full Length CEA Fully Inserted i

The SHUTDOWN MARGIN shall be greater than or equal to that shown in Figure 1.

3) 3.1.1.3 - MODERATOR TEMPERATURE COEFFICIENT The Moderator Temperature Coefficient (MTC) shall be within the region of acceptable operation of Figure 9.

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4) 3.1.2.9 - BORON DILUTION :

1 Limiting Condition for Operation 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.

l Action With one or both start-up channel high neutron flux alarms inoperable, the RCS boron concentration shall be determined at the applicable monitoring frequency specified in l

l Tables I through 5.

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:

l l 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 ;

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; i

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

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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, operation in Modes I 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 LENGTH CEA INSERTION LIMITS The part length CEA group shall be limited to the insertion limits shown on Figure 4.

8) 3.2.1 - LINEAR HEAT RATE '

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.

1

9) 3.2.3 - AZIMUTHAL POWER TILT- T q 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:

L 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 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 l the Region of Acceptable Operation shown on Figure 7, using any operable CPC l channel.

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an a x --.-.a.. - - - - s u sa w-..ama , .,s,- -s, ,. -,

c) When COLSS is out of senice and neither CEAC is operable; operate within the l

Region of Acceptable Operation shown on Figure 8, using any operable CPC ,

channel.

11) 3.2.7 - AXIAL SHAPE INDEX ,

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

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COLSS OPERABLE

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

-0.27 s ASI s +0.27 for THERMAL POWERS < 70% of RATED THERMAL POWER COL 5S 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 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 Keftof 0.95 or less, or

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

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~IV. METHODOLOGIES 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 I the Regulating CEA Insenion Limits.

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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. j

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 Heat Rate, Azimuthal Power Tilt and ASI. i

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

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 l

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 Versu Thermal Power Figure 5. Allowable Peak Linear Heat Rate Versus Core Inlet temperature i

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)

Figure 9. Moderator Temperature Coefficient (MTC) Versus Core Power l l

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8

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Shutdown Margin as a Function of Cold Leg Temperature I

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(500 F,4.10%)

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2 a

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$ Region of Acceptable Operation l

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1 1 (40's F,1.0%)

0 0 100 200 300 400 500 600 l

Cold Leg Temperature F Figure 1 l 9

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. _ . _ . . _ _ _ _ . ~ . _ _ . _ - _ . _ _ _. ._-. . _ - . . _ . _ _ . . . _ _ _ . _ . . _ _ _ _ . . _ .

Required Power Reduction After Single CEA Deviation

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C 20 t !

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T s

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0 15 30 45 60 Time After CEA Deviation (Minutes)

Figure 2 a When core power is reduced to 60% of rated power per this limit curve, further reduction is not required by this specification.

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.g a q s s a e a a s s 4 e 4 4 4 e 4 4 4 W5 mod 1VWWBNA G31VW do NOTA 3vud FIGURE 3 CEA INSERTION LIMIT 5 V5 THERMAL POWER 11

.- i Part length CEA lasertien Limit vs Thermal Pour ,

i 190 50 80 S ,

.I 70 Unacceptable sE 2

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60 -" 'E

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Operation 6 5 3 x >

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n. $0 e e a

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40 0 5 - -

,5 -S Restricted 3

.m.s 30 N Operation i i

20 i Unrestricted 0pertation i 10 O

o 20 40 60 to 100 120 140 Part length CEA Position Saches WitWrewn)

Figure 4 i 12 ;

- - - - - _ . _ - _ _ _ _ _ - _ . _ . - _ - - _ - - _ - _ _ - - _ _ - - _ - - _ -_ _ _ _ _ _ _ _ _ _ __ _ _. _ _ _ -I

Allowable Peak Linear Heat Rate vs Tc -

(13.4 kw/R at $57.5F) 13.4 - .

f 13.3 Unacceptable operation l

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Acceptable Operation Ll lii l l

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k

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I (13.1 Ins /R at 520 F) I l

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510 515 520 525 530 535 540 545 550 555 560 Initial Core Coolant Inlet Tennperature F Figure 5 13

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i Allowable Peak Linear Heat Rate vs Tc For COLSS Out of Service j (13.8 kw/ft 1557.5 F) )

13.8 -

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i Unacceptabic Operation 13.7 5s t

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32 i 3 k.O 1

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13.5 (13.5 kw/ft @ 520 F) 13.4 510 515 520 525 530 535 540 545 550 555 560 Initial Core Coolant inlet Temperature F Figure 6 14

i WATERFORD 3 CYCLE 8 COOS .

CEAC OPERABLE LIMIT LINES ,

3.0 2.9 28 Acceptable Operatio O -100% Power Levels 2.7 t 2.6 [.22,2 60)

(.10,2.60) g 2.5 m ,

z 2A (-0.17,2AO)

E 2.3 .

C 5 ,~, Acceptable Operation 2

u Power _>90%

2.1

' (22,2.00) 2.0

(.15,2 00) 1.9

( .17,1.80)

, ,7 Unacceptable Operation 1.6

-03 -0.2 -0.1 0.0 0.1 02 03 Core Average ASI Figure 7 15

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WATERFORD 3 CYCLE 8 COOS CEAC INOPERABLE LIMIT LINES 3.2 ,

3.1 Acceptable Operation 3D 0 - 100% Power Levels 2.9 ( 22,2.90)

( 05,2.90) 2.8 oc e .

$ 2.7 E

s (-0.17,2.60)

-E 2.6 i Acceptable Operation ( 22.2 so) g 2.s Power >90% -

o ( 11,2.50) 2.4 2.3

( .17,2.20) 2.2 Unacceptable Operation 2.1 2.0

-03 -0.2 -0.1 00 0.1 0.2 0.3 Core Average ASI Figure 8 i

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_. . . . . _ _ . _ _ _ . . - _ _ _ _ _ _ . _ _ . _ _ _ _ _ . . . _ _ _ . _ .___m_. .___.___..______m._-___ _ __._._.__.____._____________________.____________.m__.________ _ _ _ _ _ _ _ _ _ _ _ _ _ _

MTC as a Function of Core Power 0.5 N

w 0

N (100,-0.2)

-0.5

-1 s

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j Acceptable Operating Region A

E -2

-2.s

-3 .

-3.3

-3.5 0 10 20 30 40 50 60 70 80 90 100 Core Power (% of Rated Thermal Power)

Figure 9 -

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List of Tables

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

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

3. Required Monitoring frequency for Backup Boron Dilution as a Function of Operating l 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 K,g > 0.95.

5. Required Monitoring frequency for Backup Boron Dilution as a Function ofOperating Charging Pumps and Plant Operating Modes for K,g s 0.95, 18

- )

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TABLEI i

REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON )

DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR i KeffGREATER-THAN 0.98 K eg;>0.98 j l

OPERATIONAL Number of Operatina Charninn Pumps

MODE 0 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 **

l 5 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months Operation not allowed ** l 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 I entire monitoring frequency. l

! *

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 CETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR -

K egGREATER-THAN 0.97 AND LESS THAN OR EQUAL TO 0.98 ;

0.98 2 Keg >0.97 OPERATIONAL Number of Operatina Charging P:nng*

MODE 0 1 2 3 j 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" 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 panially drained 6 Operation not allowed **

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

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

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TABLE 3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR. i K efrGREATER-THAN 0.96 AND LESS THAN OR EQUAL TO 0.97 0.97 2 Kefy>0.96 OPERATIONAL Number of Ooerating Charging Pumps

MODE 0 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 *

l RCS partially drained 6 Operation not allowed **

1

!

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

' 1

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

l 2

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4 TABLE 4 REQUIREL' MONITORING FREQUENCIES FOR BACKUP BORON DILUT1.ON DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR KegGREATER-THAN 0.95 AND LESS THAN OR EQUAL TO 0.96 4

0.96 2 Ke g>0.95

OPERATIONAL Number of Operatina Chargina Pumos*

{

MODE 0 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 i 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 inopera?!e by racking out their motor circuit breakers.

22

6 ;

l TABLE 5 i REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON !

DILUTION DETECTION AS A FUNCTION OF OPERATING l CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR l KegLESS THAN OR EQUAL TO 0.95 l Kegs 0.95 l

A OPERATIONAL Number of Operating Charaina Pumos' MODE O 1 2 3 1

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 )

I

.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 c:4ined 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 *

r'

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.

I 23

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ML20095E693

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