Text

Rev 0 to PVNGS Unit 2,COLR.
	ML17312B721
Person / Time
Site:	Palo Verde
Issue date:	10/03/1997
From:	; ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	;
Shared Package
ML17312B720	List: ML17312B719; ML17312B721;
References
	NUDOCS 9710150183
	Download: ML17312B721 (46)
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CORE OPERATING LIMITSREPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)

Unit 2 Revision 0 Page 1 of 24 97iOi50i83 97i003 I PDR ADQCK 05000529 P PDRQ

t PVNGS VNIT2 CORE OPE<RATING LIMITS RE<PORT Revision 0 Table of Contents

~Deecri rien Revision ¹ ~Pa e Cover Page Table of Contents Affected Technical Specifications CORE Operating Limits 3.1.1.1 Shutdown Margin - Reactor Trip Breakers Open 3.1.1.2 Shutdown Margin - Reactor Trip Breakers Closed 3.1.1.3 Moderator Temperature Coefficient 3.1.2.7 Boron Dilution Alarms 3.1.3.1 Movable Control Assemblies - CEA Position 3.1.3.6 Regulating CEA Insertion Limits 3.1.3.7 Part Length CEA Insertion Limits 3.2.1 Linear Heat Rate 3.2.3 Azimuthal Power Tilt - Tq 3.2.4 DNBR Margin 3.2.7 Axial Shape Index 3.9.1 Boron Concentration (Mode 6)

List of Figures Figure 3.1.1.1-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Open Figure 3.1.1.2-1 Shutdown Margin Versus Cold Leg Temperature Reactor Trip Breakers Closed Figure 3.1.1.3-1 MTC Acceptable Operation, Modes 1 and 2 10 Figure 3.1.3.1-1 Core Power Limit After CEA Deviation

~

Figure 3.1.3.6-1 CEA Insertion Limits Versus Thermal Power 12 (COLSS in Service)

Figure 3.1.3.6-2 CEA Insertion Limits Versus Thermal Power 13 (COLSS Out of Service)

Figure 3.1.3.7-1 Part Length CEA Insertion Limits Versus Thermal Power 0 14 Page 2 of 24

1 PVNGS UNIT 2 CORE OPERATING LIMITSREPORT Revision 0 Table of Contents (Continued)

D~escri tion Revision ¹ ~Pa e Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power 15 (COLSS in Service)

-Figure 3.2.4-1 COLSS DNBR Operating Limit Allowance for Both 16 CEACs Inoperable Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core 17 Protection Calculators (COLSS Out of Service, CEACs Operable)

Figure 3.2.4-3 DNBR Margin Operating LimitBased on the Core Protection Calculators (COLSS Out of Service, CEACs Inoperable)

List of Tables 19 Table 3.1.2.7-1 Required Monitoring Frequencies for Backup Boron 20 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff> 0.98 Table 3.1.2.7-2 Required Monitoring Frequencies for Backup Boron 21 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > Keff > 0.97 Table 3.1.2.7-3 Required Monitoring Frequencies for Backup Boron 22 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97 > Keff > 0.96 Table 3.1.2.7-4 Required Monitoring Frequencies for Backup Boron 23 Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96 > Keff > 0.95 Table 3.1.2.7-5 Required Monitoring Frequencies for Backup Boron 24 Dilution Detection as a Function of Operating Charging Pumps

(

and Plant Operational Modes for Keff 0.95 Page 3 of 24

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PVNGS UNIT 2 CORE OPE<RATING LIMITSREPORT Revision 0

'/his Report has been prepared in accordance with the requirements of Technical Specification 6.9.1. The Core Operating Limits have been developed using the NRC approved methodologies specified in Section 6.9.1.10 of the Palo Verde Unit 2 Technical Specifications.

FFE TKDPVN TE HNI AI. PF. IFI ATI N 3.1.1.1 Shutdown Margin - Reactor Trip Breakers Open 3.1.1.2 Shutdown Margin - Reactor Trip Breakers Closed 3.1.1.3 Moderator Temperature Coefficient 3.1.2.7 Boron Dilution Alarms 3.1.3.1 Movable Control Assemblies - CEA Position 3.1.3.6 Regulating CEA Insertion Limits 3.1.3.7 Part Length CEA Insertion Limits 3.2.1 Linear Heat Rate 3.2.3 Azimuthal Power Tilt - Tq 3.2.4 DNBR Margin 3.2.7 Axial Shape Index 3.9.1 Boron Concentration (Mode 6)

RF<. PFRATIN I.IMIT The cycle-specific operating limits for the specifications listed are presented below.

3.l.l.l - hutdown Mar 'n - Reactor Tri Breaker 0 en The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1.1-1.

3.1.1.2 - Shutdown Mar n - Reactor Tri Breakers Closed The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1.2-1.

Page4of 24

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RF. PFRATI t

PVNGS UNIT 2 CORE OPE<RATING LIMITSRE<PORT I,IMIT - TI I:D Revision 0 3.1.1.3 - Moderator Tem erature Coefficient The moderator temperature coefFicient (MTC) shall be within the area of Acceptable Operation shown in Figure 3.1.1.3-1.

3.1.2.7 - Boron Dilutio'n Alarms 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 3.1.2.7-1 through 3.1.2.7-5.

8.1.8.1 - Movable Control Assemblies - CEA Position 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 3.1.3.1-1.

3.1.3.6 - Re ulatin CEA Insertion Limits One or more CEACs OPERABLE: With COLSS IN SERVICE, regulation CEA'groups shall be limited to the withdrawal sequence and to the insertion limits shown in Figure 3.1.8.6-1; with COLSS OUT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits shown in Figure 3.1.8.6-2.

3.1.3.7 - Part Len h CEA Insertion Limits One or more CEACs OPERABLE: The part length CEA groups shall be limited to the insertion limits shown in Figure 3.1.3.7-1.

8.2.1 - Linear Heat Rate The linear heat rate limit of 13.1 kW/ft shall be maintained.

Page 5 of 24

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PVNGS UNIT 2 CORE OPERATING LIMITSREPORT PERATIN I,IMIT - NTIN FD Revision 0 3.2.3 - Azimuthal Power Tilt - T The AZIMUTHALPOWER TILT (Tq) shall be less than or equal to the limit in Figure 8.2.3-1 with COLSS IN SERVICE.

8.2.4- DNBR Mar 'n 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'perable 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.

8.2.7- Axial Sha e Index The core average ALGALSHAPE INDEX (ASI) shall be maintained within the following limits:

COLSS OPERABLE

-0.186 < ASI < 0.164 COLSS OUT OF SERVICE (CPC)

-0.10 < ASI < 0.10 8.9.1 - Boron ncentration Mode 6 The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration > 3000 ppm.

Page 6 of 24

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PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 0 3.1.1.1-1. Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers Open 3.1.1.2-1. Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers Closed 3.1.1.3-1. MTC Acceptable Operation, Modes 1 and 2.

3.1.3.1-1. Core Power LimitAfter CEA Deviation.

3.1.3.6-1. CEA Insertion Limits Versus Thermal Power (COLSS In Service).

3.1.3.6-2. CEA Insertion Limits Versus Thermal Power (COLSS Out of Service) 3.1.3.7-1. Part Length CEA Insertion LimitVersus Thermal Power.

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

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

3.2.4-2. DNBR Margin Operating LimitBased 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 Inoperable).

Page 7 of 24

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Revision 0 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT FIGURE 3.1.1.1 1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN REGI N OF ACCE TABLE OPER TION Cl z

REGI N OF UNACC PTABLE OPER TION 100 200 300 400 500 600 COLD LEG TEMPERATURE ( F)

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PVNGS UNIT 2 CORE OPERATING LIMITS REPORT FIGURE 3. 1. 1.2 1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED (500,6.

REGI N OF ACCE TABLE OPER TION REGI N OF NACC PTABL OPER TION 100 200 300 400 500 600 COLD LEG TEMPERATURE ( F)

Page 9 of 24

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0.5 (o~, o.5)-------- Pec. 3.g t 3 Maximum 0.0 egining p~ yc e U irnit er Limit (5o~, o.o) f100~, 0)

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t i PVNGS UNIT 2 CORE OPERAT'ING LIMITS REPORT Revision 0 FIGURE 3.1.3.1 1 CORE POINTER LIMIT AFTER CEA DEVIATION

30 zD 25 c+

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

WHEN CORE POWER IS REDUCED TO 55% OF RATED THERMAL POWER PER THIS LIMIT CURVE, FURTHER REDUCTION IS NOT REQUIRED Page 11 of 24

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GROUP 5 GROUP 3 GROUP 1 c 150 120 90 60 30 0 150 120 90 60 30 0 150 120 90 60 30 0 GROUP 4 GROUP 2 O 150 120 90 60 30 0 150 120 90 60 30 0 CEA POSITION (INCHES WITHDRAWN)

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x 150 120 90 60 30 0 150 120 90 60 30 0 CEA POSITION (INCHES WITHDRAWN)

t t PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3. 1.3.7 1 PART LENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 10 10 20 20 R

30 30 Cl 40 40 V

50 50 M

60 60 R

70 70 R TRANSIENT INSERTION LIMIT 75.0 INCHES CO 80 80 M

O S4 90 OPERATION OPERATION 90 UNACCEPTABLE RESTRICTED 100 100 110 110 R

IÃ LONG TERM STEADY STATE INSERTION LIMIT (112.5 INCHES) 120 120 C4 130 130 OPERATION ACCEPTABLE 140 140 150 150 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 FRACTION OF RATED THERMAL POWER Page 14 of 24

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PVNGS UNIT 2 CORE OPERATING LIMITS REPORT FIGURE 3.2.3 1 AZIMUTHALPOWER TILT VERSUS THERMAL POWER (COI SS IN SERVICE) 50 45 40 35 REGION OF 30 UNACCEPTABLE 25 OPERATION 20 15 10 5

0 10 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMAL POWER Page 15 of 24

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~75 100 PERCENT OF RATED THERMAL POWER

I Revision 0 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT FIGURE 3.2.4 2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OuT OI" SZRVlCZ, CZ~C s OPZR~SLZ) 2.5 ACCEPTABL OPER ATION A YPO ERLEV MINIM M OF 1 EAC OP RABLE (0.03, 2.33) 0.1, 2.3 2.3 z

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~ 1, 2.24) 2.2 PTAB PE POW R AT 0 ABOV 90%

Z 21 ININI EA~P (0. 5, 2.03)

(0.1, 2.0 I:L 2.0

.1, 1.96)

N EPTAB PERAT 1.8 0.20 0.15 0.10 0.05 0.00 0.05 0.10 0.15 0.20 CORE AVERAGE ASI Page 17 of 24

Revision 0 PVNGS UNIT 2 CORE OPERATING LllNlTS 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 PTAB Y PO ER LEV Z 3.4 EAC's IN PERABL 0.1, 3.3 )

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NACC PTABL 3.1 OPER TION 3.0

-0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 0.15 0.20 CORE AVERAGE ASI Page 18 of 24

Revision 0

>>r!"'*"

3.1.2.7-1.

PVNGS UNIT 2 CORE OPERATING LIMITS REPORT Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for E g > 0.98.

3.1.2.7-2. Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98 > E g > 0.97.

3.1.2.7-3. Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes 4

for 0.97 > K g > 0.96.

3.1.2.7-4. Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96>K g> 0.95.

3.1.2.7-5. Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for E g< 0.95.

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4 Revision 0 PVNGS UNIT 2 CORE OPERATING LIMITSREPORT TABLE 3.1.2.7-1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR K,ff)0.98 Number of Operating Charging Pumps OPERATIONAL MODE 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 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 5 not 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 48' on SCS ONA ONA ONA ONA Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 20 of 24

Revision 0 PVNGS UNIT 2 CORK OPERATING LIMITSREPORT TABLE 3.1.2.7-2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98 > K~ff)0.97 Number of Operating Charging Pumps OPERATIONAL MODE 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 Page 21 of 24

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Revision 0 PVNGS UNIT 2 CORE OPERATING LIMITS REPORT TABLE 3.1.2.7-3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97 > Kcfr) 0.96 Number of Operating Charging Pumps OPERATIONAL MODE 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 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ONA 4 not on SCS 12hours 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ONA ONA Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 22 of 24

T Revision 0 H

PVNGS UNIT 2 CORE OPERATING LIMITSREPORT TABLE 3.1.2.7-4 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96 > Kc ff)0.95 Number of Operating Charging Pumps OPERATIONAL MODE 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 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 4 not on SCS 12hours 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 4&5onSCS 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 Notes: SCS = Shutdown Cooling System ONA = Operation Not Allowed Page 23 of 24

t PVNGS UNIT 2 CORE OPERATING LIMITSREPORT t Revision 0 TABLE 3.1.2.7-5 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTIONDETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR K ff < 0.95 Number of Operating Charging Pumps OPERATIONAL MODE 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 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 4noton 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 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 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 2hours 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 4&5onSCS 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 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 Notes: SCS = Shutdown Cooling System ONA = Operation not allowed Page 24 of 24

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ML17312B721

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