Text

Rev 6 to COLR for PVNGS Unit 3
	ML20151S094
Person / Time
Site:	Palo Verde
Issue date:	08/21/1998
From:	; ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	;
Shared Package
ML20151S083	List: ML20151S079; ML20151S086; ML20151S090; ML20151S094;
References
	NUDOCS 9809020027
	Download: ML20151S094 (26)
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4 4 Core Operating Limits Report PVNGS Unit 3, Revision 6 '

9 4

5 .

j p

P

Revision o PVNGS UNIT 3 CORE OPERATING LIMITS REPORT 8

CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS) l UNIT 3 Revision 6 -

1 Page 1 of 25

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT

. Table of Contents Descriotion Revision # Pace Cover Page 6 1 l

Table of Contents 6 2 Affected Technical Specifications 6 4 i CORE Operating Limits 3.1.1 Shutdown Margin (SDM)- Reactor Trip Breakers Open 6 4 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed .6 4 ;

3.1.4 Moderator Temperature Coefficient (MTC) 6 5 -

3.1.5 Control Element Assembly (CEA) Alignment 6 5 ;

3.1.7 Regulating CEA Insertion Limits 6 5 3.1.8 Part Length CEA Insertion Limits 6 5 3.2.1 Linear Heat Rate (LHR) 6 6 3.2.3 Azimuthal Power Tilt (Tq) 6 6 3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 6 6 :

3.2.5 Axial Shape Index (ASI) 6 7 ,

3.3.12 Boron Dilution Alarm System (BDAS) 6 7 :

3.9.1 Boron Concentration 6 7 !

List of Figures 6 8 4

Figure 3.1.1-1 Shutdown Margin Versus Cold Leg Temperature 6 9 Reactor Trip Breakers Open Figure 3.1.2-1 Shutdown Margin Versus Cold Leg Temperature 6 10 l

Reactor Trip Breakers Closed Figure 3.1.4-1 MTC Acceptable Operation, Modes 1 and 2 6 11 Figure 3.1.5-1 Core Power Limit After CEA Deviation 6 12 i Figure 3.1.7-1 CEA Insertion Limits Versus Thermal Power 6 13

-(COLSS in Service) l Figure 3.1.7-2 CEA Insertion Limits Versus Thermal Power 6 14 (COLSS Out of Service)

. Figure 3.1.8-1 Part Length CEA Insertion Limits Versus Thermal Power 6 15 Page 2 of 25 m_ _ . - _ _ _ __ . _ _ - _ _ , . _ _ _____ - . . _ . , _ ,

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT Table of Contents (Continued)

Descrintion Revision # Pace Figure 3.2.31 Azimuthal Power Tilt Versus Thermal Power 6 16 (COLSS in Service)-

Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both 6 17 CEACs Inoperable Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core 6 18 Protection Calculators (COLSS Out of Service, CEACs Operable)

Figure 3.2.4-3 DNBR Margin Operating Limit Based on the Core 6 19 Protection Calculators (COLSS Out of Service, CEACs

. Inoperable)

List of Tables 6 20 Table 3.3.12-1 Required Monitoring Frequencies for Backup Boron 6 21 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff> 0.98 Table 3.3.12-2 Required Monitoring Frequencies for Backup Boron 6 22 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 2 Keff > 0.97 Table 3.3.12-3 Required Monitoring Frequencies for Backup Boron 6 23 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 2 Keff > 0.96 Table 3.3.12-4 Required Monitoring Frequencies for Backup Boron 6 24 Dilution Detection as a Function of Operating Charging Pumps -

and Plant Operational Modes for 0.96 2 Keff > 0.95 Table 3.3.12-5 Required Monitoring Frequencies for Backup Boron 6 25 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff s 0.95 Page 3 of 25

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT This Report has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Core Operating Limits have been developed using the NRC approved meth6dologies specified in Section 5.6.5 b of the Palo Verde Unit 3 Technical Specifications. '

AFFECTED PVNGS TECHNICAL SPECIFICATIONS 3.1.1 Shutdown Margin (SDM) - Reactor Trip Breakers Open 3.1.2 Shutdown Margin (SDM) - Reactor Trip Breakers Closed 3.1.4 Moderator Temperature Coefficient (MTC) 3.1.5 Control Element Assembly (CEA) Alignment

3.1.7 Regulating CEA Insertion Limits

~3.1.8 Part Length CEA Insertion Limits 3.2.1 Linear Heat Rate (LHR) 3.2.3 Azimuthal Power Tilt (Tq )

3.2.4 Departure From Nucleate Boiling Ratio (DNBR) 3.2.5 Axial Shape Index (ASI) 3.3.12 Boron Dilution Alarm System (BDAS) 3.9.1 Boron Concentration CORE OPER ATING 1,IN11TS The cycle-specific operating limits for the specifications listed are presented below.

3.1.1 - Shutdown Marcin (SDM)- Reactor Trin Breakers Onen The Shutdown Margin shall be greater than or equal to that shown in .

Figure 3.1.1-1.

3.1.2 - Shutdown Marcin (SDM)-Reactor Trin Breakers Closed The Shutddwn Margin shall be greater than or equal to that shown in Figure 3.1.2-1.

Page 4 of 25

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT CORE OPER ATING LIMITS - CONTINUED 3.1.4 - Moderator Temnerature Coefficient (MTC)

The moderator temperature coefficient (MTC) shall be within the area of Acceptable Operation shown in Figure 3.1.4-1.

3.1.5 - Control Element Assembly (CEAT Alienment With one or more full-length or part-length CEAs misaligned from any other CEAs in its group by more than 6.6 inches, the minimum required MODES 1 and 2 core power reduction is specified in Figure 3.1.5-1.

3.1.7 - Reculatine CEA Insertion Limits One or more CEACs OPERABLE: With COLSS IN SERVICE, regulating CEA groups shall be limited to the withdrawal sequence and to the insertion limits lshown in Figure 3.1.7-1; with COLSS OUT l OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limitsl shown in l Figure 3.1.7-2.

l 1

A reactor power cutback will cause either (Case 1) Regulating Group ,

5 or Regulating Group 4 and 5 to be dropped with no sequential l insertion of additional Regulating Groups (Groups 1,2,3, and 4) or (Case 2) Regulating Group 5 or Regulating Group 4 and 5 to be dropped with all or part of the remaining Regulating Groups (Groups .

1,2,3, and 4) being sequentially inserted. In either case, the l Transient Insertion Limit and withdrawal sequence specified in the CORE OPERATING LIMITS REPORT can be exceeded for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months .

3.1.8 - Part Lencth CEA Insertion Limits One or more CEACs OPERABLE: The part length CEA groups shall be limited to the insertion limits shown in Figure 3.1.8-1. i l

Page 5 of 25

Revision'6 PVNGS UNIT 3 CORE OPERATING Ll>llTS REPORT CORE OPER ATING LIMITS - CONTINUED j 3.2.1 - Linear Heat Rate (LHR) ;

The linear heat rate limit of13.1 kW/ft shall be maintained. l 3.2.3 - Azimuthal Power Tilt (T3)

The AZIMUTHAL POWER TILT (T )q shall be less than or equal to the ;

limit in Figure 3.2.3-1 with COLSS IN SERVICE.

3.2.4 - Departure From Nucleate Boiline Ratio (DNBR) -

COLSS IN SERVICE and Both CEACs INOPERABLE - Maintaining COLSS calculated core power less than or equal to COLSS calculated '

core power operation limit based on DNBR decreased by the allowance shown in Figure 3.2.4-1.

COLSS OUT OF SERVICE and Either One or Both CEACs are OPERABLE - Operating within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.

COLSS OUT OF SERVICE and CEACs INOPERABLE - Operating within the region of acceptable operation of Figure 3.2.4-3 using any operable CPC channel.

I Page 6 of 25 j l

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT

, CORE OPER ATING LIMITS - CONTINUED i

3.2.5 - Axial Shane Index (ASI)

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

COLSS OPERABLE '

0.18 s ASI s 0.16 for power 2 50% -

-0.28 s ASI s 0.16 for power < 50%

COLSS OUT OF SERVICE (CPC) ,.

-0.10 s ASI s 0.10 3.3.12 - Boron Dilution Alarm Svstem (BDAS)

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 Tables 3.3.12-1 through 3.3.12-5.

3.9.1 - Boron Concentration The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration 2 3000 ppm.

l l

Page 7 of 25

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

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT L]ST OF FIGURES 3.1.1-1. Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers Ope'n 3.1.2-1. Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers Closed ;

3.1.4-1. MTC Acceptable Operation, Modes 1 and 2.

3.1.5-1. Core Power Limit After CEA Deviation. ;

3.1.7-1. CEA Insertion Limits Versus Thermal Power (COLSS In Service). .

3.1.7-2. CEA Insertion Limits Versus Thermal Power (COLSS Out of Service) 3.1.8-1. Part Length CEA Insertion Limit Versus Thermal Power.

3.2.3-1. Azimuthal Power Tilt Limit Versus Thermal Power (COLSS In Service).

3.2.4-1. COLSS DNBR Power Operating Limit Allowance for Both CEACs Inoperable.

3.2.4-2. _ DNBR Margin Operating Limit Based on Core Protection Calculators (COLSS Out of Service, CEACs Operable) 3.2.4-3. DNBR Margin Operating Limit Based on Core Protection Calculators (COLSS Out of Service, CEACs ]noperable)

Page 8 of 25

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT FIGURE 3.1 1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN 7

C 6

N REGION OF l .

Z ACCEPTABLE S

(, OPERATION

@00,5.0~

O M

v 4 '

Z O

ev REGION OF l c

Z UNACCEPTABLE 3: 9 C

~

OPERATION O

F

~ l ~

1 j (350,1.0) i i i i i i 1 0 100 200 300 400 500 600 COLD LEG TEMPERATURE ('F)

Page 9 of 25

. o Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT FIGURE 3.1.2- 1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED 7

I (500,6.

W 6 D

~

REGION OF l

6 3 ACCEPTABLE b OPERATION

=

N

^ (3S0,4.0) o Cd , _

< o 2

[E REGION OF h UNACCdPTABLN

=,

OPERATION m

0 , , , , , ;

O 100 200 300 400 500 600 ,

COLD LEG TEMPERATURE ( F)

Page 10 of 25

w 0'5 '

C e

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( ox, 037 - - - . _ _ _ , . ,, ,- - - -- . . _ _ . Tech. Spec. 3.14 Maximum Upper Limit

% . ~ --- we9g7;,,,9 O f Lycle Llrr)lt 0.0 -

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70 40 50 60 70 80 90 100 0 10 20 30 ,

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O CORE POWER LEVEL (% OF RATED TIIERhf AL POWER)

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o - Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT FIGURE 3.1.5-1 CORE POWER LIMIT AFTER CEA DEVIATION

30 ' ..

Z O

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0 10 20 30 40 50 60 TIME AFTER DEVIATION, MINUTES

WHEN CORE P'0WER IS REDUCED TO 55% OF RATED THERMAL POWER PER THIS LIMIT CURVE, FURTHER REDUCTION IS NOT REQUIRED Page 12 of 25

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m W

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t CEA POSITION (INCIIES WITIIDRAWN) i s

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GROUP 5 GROUP 3 GROUP 1 K R E 3 :

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GROUP 4 GROUP 2 @

tn 150 120 90 60 30 0 150 120 90 60 30 0 -

l if i CEA POSITION (INCIIES WITIIDRAWN) i I

I

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT 1 FIGURE 3.1.8-1 PART LENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 0-0 10-10 l

20-20 E -

30 I

k 30-g . ,

~ -

40 h 40-P_,

'50-50 60

@ 60-E

~

70 70- TRANSIENT INSERTION LIMIT (75.0 INCHES' Z

o .

80

.E 804

$ OPERATION ! OPERATION -

90 a 90-g UNACCEPTABLE RESTRICTED

- 100 u 100 1 l E 110-

-1 0 g .......................................

3 120q LONG TERM STEADY STATE INSERTION LIMIT (112.5 INCHES) - 120

$ 3 - 130 !

$ 130i

~

OPERATION ACCEPTABLE - 140 140-1 150- i .

i i

.- 150 i

J i i i l i i i 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1.0 FRACTION OF RATED THERMAL POWER Page 15 of 25

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT l FIGURE 3.2.3-1 AZIMUTHAL POWER TILT VERSUS THERMAL POWER ;

(GOLSS IN SERVICE) 50-p 45 ,

z a

'A .- i O 40-x a 351 REGION OF

'r, F

F 30-UNACCEPTABLE '

x

'A 25-5 OPERATION 1 20 '

a

- 15-D 10~

2 7/

lMMMBFA i

0 i

10 i

20 i

30 I

40 i

50 l

60 i

70 80 i l 90 i

100 PERCENT OF RATED THERMAL POWER Page 16 of 25

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT FIGURE 3.2.4-1 COLSS DNBR OPERATING LIMIT ALLOWANCE FOR BOTH CEAC's INOPERABLE g <

(20, 95.0) ,

. ~

(0.0, 75:0) E2 s=

0 L

s N .

h o Q 1

N F

O ,

H Z

W U

Z W

$ t O

i i i I T' l

! g R i COLSS DNBR POWER OPERATING LIMIT REDUCTION (7. OF RATEDPareTHERMAL 17 of 25 POWER)

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT FIGU R E 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE) 2.5 ACCEPTABLE OPERATION l l I ANY POWER LEVEL MINIMUM OF 1 CEAC OPERABLE (0.03,I2.33)

(0.1, 2.33)

% l 2.3

- (- 0.1, 2.24)

- 1 I 2.2 AUU e i AtSLt- UPERATiON j

POWER AT OR ABOVE 90%

e 2.1 miniMuu Or 1 CEAC OPERatsu:

l (O. 5, 2.03)l -

_ (0.1, 2.03)

C

2.0 ,

( - 0.1, 1.96)-

19 UNACCt:PTABEE OPERATION 1.8 .,

0. ' 5 0.20

-0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 CORE AVERAGE ASI i Page 18 of 25

. _ _ . _-_m_.. .- _ _ _ _ _ _ _ . _ _ , _ . _ .

'

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT FIGURE 3.2.4-3 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's INOPERABLE) 3.6 '

3.5 , ^CCte i Atste urtHATION Z' ANY POWER LEVEL Q ~

Z 3.4 .

C CEAC's INDPERABLE E (0.1, 3.32)

D f i l' 2 3.3 (0.00, 3.:32) 3 2 i M' (-0.1, 3.19)'

D UNACCEPTABLi$

3.1 1 i

OPERATION 3.0 , . .,- .,. .,. .,. .,.

0.00 0.05 0.10 0.15 0.20

-0.20 -0.15 -0.10 -0.05 CORE AVERAGE ASI Page 19 of 25

Revision 6 e

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT LIST OF TABLES 3.3.12-1. Required Monitoring Frequencies ~for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for K eg> 0.98.

3.3.12-2. Required Monitoring Frequencies for Backup Boron Dilution Detection as ;

a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 2 K eg > 0.97.

3.3.12-3. Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 2 I(g> 0.96.

3.3.12-4. Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes

. for 0.96 2 Ke g> 0.95.

3.3.32-5. Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for K egs 0.95.

L i

l i

Page 20 of 25 l

Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT i

- TABLE 3.3.12-1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR Ke rr> 0.98 Number of Operating Charging Pumps OPERATIONAL '

MODE O 1 2 3 l l

3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA f I

4 not on SCS 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA 5 not on SCS ,

t 4 & 5 on SCS ONA ONA ONA ONA l

.i j

Notes: SCS = Shutdown Cooling System l

ONA = Operation Not Allowed !

I l

l Page 21 of 25 4

._- .-.-. - . - . . - - . . . . - . _ . . - - - . = . ~ - - - . -.-...... .-. - _.- .- - . .. .. ._ - -. .,.

Revision 6

- ~

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT -

I TABLE 3.3.12-2 )

REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON

- DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 2 Kerr> 0.97 ,

Number of Operating Charging Pumps ,

p MODE 0 1 2 3 l 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Ihour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA

.4 not on SCS 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 ONA ,

5 not on SCS 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 ONA 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA ;

Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed ,

5 i

Page 22 of 25

Revision 6

~

PVNGS UNIT 3 CORE OPERATING LIMITS REPORT TABLE 3.3.12-3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING l CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 2 Ke g> 0.96 l l

Number of Operating Charging Pumps OPERATIONAL MODE O 1 2 3 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months Ihour ONA 4 not on SCS 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months Ihour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 5 not on SCS 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 Ihour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 4 & 5 on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months Ihour ONA ONA Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 23 of 25

i r : vision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT ,

TABLE 3.3.12-4 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON- !

DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96 2 Ke g> 0.95 1

?

i Number of Operating Charging Pumps j OPERATIONAL MODE 0 1 2 3 i i

I 3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 3 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months Ihour 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months i j 4 not on SCS 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 3.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1.5 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 :

5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 3.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1.5 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 l

! 4 & 5 on SCS 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 ONA ;

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l Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed ;

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Page 24 of 25 I

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Revision 6 PVNGS UNIT 3 CORE OPERATING LIMITS REPORT TABLE 3.3.12-5 REQUIRED MONITURING FREQUENCIES FOR BACKUP BORON '

DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR K eg 5 0.95 j Number of Operating Charging Pumps l

OPERATIONAL MODE 0 1 2 3 l i

3 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months Ihour l 4 not on SCS 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 4.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months I hour l

5 not on SCS 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 4.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months Ihour 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 0.75 hours8.680556e-4 days 0.0208 hours 1.240079e-4 weeks 2.85375e-5 months ONA 4 & 5 on SCS 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months ONA ONA k 6 :

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Notes: SCS = Shutdown Cooling System ONA = Operation not allowed Page 25 of 25 I

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