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| {{#Wiki_filter:CORE OPERATING LIMITS REPORT PALO VERDE NUCLEAR GENERATING STATION (PVNGS)UNIT 2 CYCLE 7 Revision 1 9607080274 960628 PDR ADQCK 05000528 P PDR Page 1 of 23 Revision 1 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT Table of Contents~Descri tion Cover Page Table of Contents Revision 0 P~ae gp 1 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 | | {{#Wiki_filter:}} |
| -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 Concenmtration (Mode 6)4 List of Figures Figure 3.1.1.1-1 Shutdown Margin.Versus Cold Leg Temperature Reactor Trip Breakers Open ja 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 Figure 3.1.3.1-1 Core Power Limit After CEA Deviation 10 Figure 3.1.3.6-1 CEA Insertion Limits Versus Thermal Power (COLSS in Service)Figure 3.1.3.6-2 CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)12 Figure 3.1.3.7-1 Part Length CEA Insertion Limits Versus Thermal Power 0 13 Page 2 of 23
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| Revision 1 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT Table of Contents (Continued)
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| ~Dercri ri n ReviseiRn¹~Pa e Figure 3.2.3-1 Azimuthal Power Tilt Versus Thermal Power (COLSS in Service)14 Figure 3.2A-1 COLSS DNBR Operating Limit Allowance for Both CEAC's Inoperable 15 Figure 3.2.4-2 DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEAC's Operable)16 Figure 3.2A-3 DNBR Margin Operating Limit Based on the Core Protection Calculators (COLSS Out of Service, CEAC's Inoperable) 17 List of Tables 18 Table 3.1.2.7-1 Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for Keff>0.98 19 Table 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>Keff>0.97 20 Table 3.1.2.7-3 Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97>Keff>0.96 21 Table 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>Keff>0.95 22 Table 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 Keff<0.95 23 Page 3 of 23
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| Revision 1 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT This 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.
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| 3.1.1.1 Shutdown Margin-Reactor Trip Breakers Open 3.1.1.2 Shutdown Margin-Reactor Trip Breakers Closed 3.1.1.3 3.1.2.7 Moderator Temperature CoefBcient Boron Dilution Alarms 3.1.3.1 Movable Control Assemblies
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| -CEA Position 3.1.3.6 Regulating CEA Insertion Limits 3.1.3.7 Part Length CEA Insertion Limits 3.2.1 3.2.3 3.2.4 Linear Heat Rate Azimuthal Power Tilt-T<DNBR Margin 3.2.7 Axial Shape Index Boron Concentration (Mode 6)The cycle-specific operating limits for the specifications listed are presented below.3.1..1-Shutdown Mar'n-Reactor Tri Breakers 0 en The Shutdown Margin shall be greater than or equal to that shown in Figure 3.1.1.1-1.
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| 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.
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| Page 4of23
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| Revision j.PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT R~P AT TT,-TIN Ji r rTm r r ffiin The moderator temperature coefficient (MTC)shall be within the area of Acceptable Operation shown in Figure 3.1.1.3-1.
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| 1 2 7-8 r n Dil i n Al With one or both start-up channel high neutron flux alarms inoperable, the RCS boron concentration shall be determined at the applicable monitoring
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| &equency specified in Tables 3.1.2.7-1 through 3.1.2.7-5.
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| 1 1-v I ntrlA m li-A i'ith 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.-R l in EA In rti n Limi One or more CEAC's OPERABLE: With COLSS IN SERVICE, regulation CEA groups shall be limited-to the withdrawal sequence and to the insertion limits shown in Figure 3.1.3.6-1; with COLSS QQT OF SERVICE, regulation CEA groups shall be limited to the withdrawal sequence and to the insertion limits shown in Figure 3.1.3.6-2.
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| 3.1.3.7-Part Len h CEA Insertion Limits One or more CEAC's OPERABLE: The part length CEA groups shall be limited to the insertion limits shown in Figure 3.1.3.7-1.
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| 3.2.1-Linear Heat Rate The linear heat rate limit of 13.5 kW/ft shall be maintained.
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| Page 5 of 23
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| Revision 1 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT P ER I I I-I F 2-zm h l wr'l The AZIMUTHAL POWER TILT (T<)shall be less than or equal to the limit in Figure 3.2.3-1 with COLSS IN SERVICE.3.2.4-DNBR Mar'n COL'SS IN SERVICE and Both CEAC's INOPERABLE
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| -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 CEAC's are OPERABLE-Oper'ating within the region of acceptable operation of Figure 3.2.4-2 using any operable CPC channel.COLSS OUT OF SERVICE and CEAC's INOPERABLE
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| -Operating within the region of acceptable operation of Figure 3.2.4-3 using any operable CPC channel.27-Axi h In x The core average AXIAL SHAPE INDEX (ASI)shall be maintained within the following limits: COLSS OPERABLE--0.188<ASI 5 0.169 COLSS OUT OF SERVICE (CPC)-0.10<ASI<0.10.1-Brn n nr in M The boron concentration of all Filled portions of the Reactor Coolant System and the refueling canal shall be maintained at a uniform concentration
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| >2500 ppm.Page 6 of 23
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| Revision I PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT T (i E 3.1.1.1-1.
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| Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers~Open 3.1.1.2-1.
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| Shutdown Margin Versus Cold Leg Temperature, Reactor Trip Breakers Closed 3.1.1.3-1.
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| MTC Acceptable Operation, Modes 1 and 2.3.1.3.1-1.
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| Core Power Limit After CEA Deviation.
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| 3.1.3.6-1.
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| CEA Insertion Limits Versus Thermal Power (COLSS In Service).3.1.3.6-2.
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| CEA Insertion Limits Versus Thermal Power (COLSS Out of Service)3.1.3.7-1.
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| Part Length CEA Insertion Limit Versus Thermal Power.3.2.3-1.3.2.4-1.~~~3.2.4-2.3.2.4-3.Azimuthal Power Tilt Limit Versus Thermal Power (COI SS In Service).COLSS DNBR Power Operating Limit Allowance for Both CEACs Inoperable.
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| DNBR Margin Operating Limit Based on Core Protection Calculators (COLSS Out of Service, CEACs Operable)DNBR Margin Operating Limit Based on Core Protection Calculators (COLSS Out of Service, CEACs Inoperable)
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| Page 7 of 23 PYNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT Revision 1 FIGURE 3.1.1.1-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS OPEN N6 Y, z z W2 0 P1 U3 REGI N OF ACCE TABLE OPE TION OPE TION REGION OF UNACC PTABLE 100 200 300 400 500 600 CO<.D ZZG VZMi m~VURZ ('F)Page 7a of 23
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| ,V PVNGS UNIT 2 CYCLE 7 CORE OPERATlNG LlMlTS REPORT Revels>on 0 FIGURE 3.1.1.2-1 SHUTDOWN MARGIN VERSUS COLD LEG TEMPERATURE REACTOR TRIP BREAKERS CLOSED~6)-l5~4 z z W2 D A P1 CQ REGl N OF , ACCE TABLE OPER TION (soo,s.REGlON OF UNACCEPTABLE OPE TION 100 200 300 400 COLD LEG TEMPERATURE (F)500 600 Page 8 of 23 A O K~A K Q 0 Q"lO TI A O I XI 0'Tj 0.0-0.5-1.0-1.5-2.0-2.5-3.0-3.5-4.0 (Ox,O.5)----
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| Te h.ec.'~3M@omum U-----'9'"'"<<f ('ZGIe Limit (50x, 0.0)er Umif (100x, 0)(100r,-0.2)INTC AREA OF ACCEPTABLE OPERATION 10 20 30 40 50 60 70 80 90 CORE POWER LEVEL (%OF RATED THERMAL POWHRj 100 (Ox,-3.1)Er1d of C-------"Joie Lirni](1 oox,-3.8)K A c 9 A A M 0"<n p~0 P3Qm oC WO X 0'A 43 m~m0~1 m 0~z 4 G3 0 I@~a 0 U M s 33 0 e M 0 C 0 O II PVNGS UNlT 2 CYCLE 7 CORE OPERATlNG LlMlTS REPORT FIGURE 3.1.3.1-1 CORE POWER LIMIT AFTER CEA DEVIATION*30 z C)25 Vo~p 20 0%15~~10 QO Z 0 10 20 30 40'0 TIMZ AFTZH DZVIATION,)rri~uTZS Revision 0 60*WHEN CORE POWER IS REDUCED TO 55%OF RATED THERMAL POWER PER THIS LIMIT CURVE, FURTHER REDUCTION IS NOT REQUIRED Page 10 of 23 lj t A O 0 M~Xf t 0 0.0.0.0.0.0.0.0.0.0.0~gi 0~e+<mm>33+01 Hrp Z+cn rg QQz W~0~~z~0 m*'%m m GROUP 5 Z 0 X m N GROUP 3 GROUP 1 150 120 90 60 30 0 150 120 90-GROUP 4 60 30 0 150 120 90 60 30 0 GROUP 2 150 120 90 60 30 0 150 120 90 60 30 0 A C Z z 9 R z 0~'Z'o jn Q+M~porn~M~6~u)+g o Mao MXŽ~l 0~M~m 3 m~Z K K g 0 0 zt A cEA r osrhoN (mcHas wtTrtDaAwN) 0 C 0 J O
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| 0.A O l4 0 N Q C)g t"d O 0.0.0.0.0.0.0.0 0.p'I OI (g~Z~X I fll~Q~I I Maes pg zx rn+~~m'0 Ol ZQcl rg gDZ GROUP 5 GROUP 3 GROUP 1 150 120 90 60 30 0 150 120-90 60 30 0 150 120 90 60 30 0 GROUP 4 GROUP 2 A (z z 9 U)C~M n.O 0'Z~L-<n Mg m O~C 4 C~~o MWO O W."~gF 0 MMG3m C g)>No A 0)0 0 z 150 120 90 60 30 0 150 120 90 60 30 0 CHA POSITION (INCFIES WITFIDRAWN)
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| .0 C 0 O e PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3.1.3.7-1 PART LENGTH CEA INSERTION LIMITS VERSUS THERMAL POWER 10 20 30 40 50 60 70 80 90 100 1 1.0 120 130 140 150 TRANSIENT INSERTION LIMIT 5.0 INCHES OP ERATION UNACCEPTABLE OP ERATION RESTRICTED OPERATION ACCEPTABLE 8 8 1 S 0 S 5 1 5 0 5 0 5 5 S S S~0 lt 0 5 1 5 0 0 5 0 0 0 0 5 a 5 I 5 0 5 0~LONG TERM STEADY STATE INSERTION LIMIT (112.5 INCHES)0 10 20 30 40 50 60 70 80 90 100 110\120 130 140 150 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 13 of 23 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT Revision 0 FIGURE 3.2.3-j.AZIMUTHAL POthtER TILT VERSUS THERMAL PO)VER (COLSS IN SERVICE)50 H 45 M 40 W 35~30 25 C)p 20+10 REGION OF UNACCEPTABLE OP ERATION 20 30 40 50 60 70 80 90 PERCENT OF RATED THERMAL POWER 100 Page 14 of 23 n 0 M M 2 08 g o~<o n 3 Q:~x oQp~Q Og n 0 lg 20 15 10 5 0 O O V Ol O 25 50 75 PERCENT OF RATED THERMAI, POWER tO O Vl O 100 t z o U)vn zo n L-M 0 o+~o 0++n HOW~g Q pl 0 n~'N~m~~+XI n-I~+I+~Z Q a I o MK m 03 0 0
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| e 2.5 PVNGS UNlT 2 CYCLE 7 CORE OPERAT1NG LlM1TS REPORT FIGURE 3.2.4-2 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS (COLSS OUT OF SERVICE, CEAC's OPERABLE)Revision 0 ACCE TABLE CQ2>Z R 2.2p 2.0 1.9 0.1, 2.14)NACC (0.95, 2.25)PTABLE 0.1, 2.25)-0.20-0.15-0.10-0.05 0.00 0.05 0.10 0.15 0.20 CORE AVERAGE ASI Page 16 o(23 PVNGS UNlT 2 CYCLE 7 CORE OPERATlNG LlMITS REPORT Revision 0 FIGURE 3.2.4'3 DNBR MARGIN OPERATING LIMIT BASED ON THE CORE PROTECTION CALCULATORS-(COLSS OUT OF SERVICE, CEAC's INOPERABLE) 2.7 2.6 ACCE TABLE CEAC's IN PERABLE (o.os 2 47~o.1, 2.47 (0.1, 234 2.2 NACC OPER PTABLE TION 2.1-0.20-0.15-0.10-0.05 0.00 0.05 0.10 0.15 0.20 CORE AVERAGE ASI Page 17 o(23 Revision 0 PVNGS UNIT 2 CYCLE,7 CORE OPERATING LIMITS REPORT LI T FTABL 3.1.2.7-1.
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| Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for K,g>0.98.3.j..2.7-2.
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| Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.98>E,1I>0.97.3.j..2.7-3.
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| Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.97>K,g>0.96.3.]..2.7-4.
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| Required Monitoring Frequencies for Backup Boron Dilution Detection as a Function of Operating Charging Pumps and Plant Operational Modes for 0.96>E,ff)0.95.3.1.2.7-5.
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| Required Monitoring Frequencies for Backup Boron Dilution Detection as'a Function of Operating Charging Pumps and Plant Operational Modes for E,g<0.95.Page 13 of 23 Revision 0 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIiVlITS REPORT TABLE 3.1.2.7-1 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR K,ff>0.98 OPERATIONAL MODE Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 4&5onSCS 12 hours 8 hours 1 hour 1 hour ONA ONA 12 hours 1 hour ONA ONA OiVA ONA ONA ONA ONA ONA Notes: SCS=Shutdown Cooling System ONA=Operation Not Allowed Page 19 of 93 Ke vision U PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT TABLE 3.1.2.7-2 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTIOlil OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.98>off>0.97 OPERATIONAL MODE Number of Operating Charging Pumps 12 hours 2 hours 0.5 hours ONA 4 not on SCS 5 not on SCS 4 Bc 5 on SCS 8 hours 2.5 hours 1 hour 0.5 hours 8 hours'.5 hours ONA ONA 12 hours 2.5 hours 1 hour 0.5.hours Notes: SCS=Shutdown Cooling System ONA=Operation Not Allowed Page 20 of 23 Revision 0 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT TABLE 3.1.2.7-3 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS ADJUNCTION OF OPERATIiNG CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.97>Kg ff)0;96 OPERATIONAL MODE Number of Operating Charging Pumps 3 4 not on SCS 5 not on SCS 4&5 onSCS 12 hours 12 hours 8 hours 8 hours 3.5 hours 1.5 hours 1 hour 1 hour 0.5 hours ONA 3.5 hours 1.5 hours 0.5 hours 3.5 hours 1.5 hours-.1 hour Notes: SCS=Shutdown Cooling System ONA=Operation Not Allowed Page 21 of 23 Revi'sion 0 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIiVIITS REPORT TABLE 3.1.2.7-4 REQUIRED MONITORING FREQUENCIES FOR BACKUP BOROiN DILUTION DETECTION AS A FUNCTION OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR 0.96>K,ff>0.95 OPERATIOiNAL iMODE Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 4%5onSCS 8 hours 8 hours 5 hours 2 hours 12 hours 5 hours 12 hours" 5 hours 2 hours 1 hour 2 hours 1 hour 2 hours 1 ho'ur 0.5 hours ONA Notes: SCS=Shutdown Cooling System ONA=Operation Not Allowed Page 22 of 23
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| Revision 0 PVNGS UNIT 2 CYCLE 7 CORE OPERATING LIMITS REPORT TABLE 3.1.2.7-5 REQUIRED MONITORING FREQUENCIES FOR BACKUP BORON DILUTION DETECTION AS A FUNCTIOiN OF OPERATING CHARGING PUMPS AND PLANT OPERATIONAL MODES FOR K,g<0.95 OPERATIOiNAL MODE.Number of Operating Charging Pumps 4 not on SCS 5 not on SCS 4&5 onSCS 6 (>4000 ppm)6 (<4000 ppm)12 hours 6 hours 12 hours 6 hours 8 hours 8 hours 6 hours 2 hours 24 hours 8 hours 24 hours 2 hours 2.5 hours 1.5 hours 3 hours 1 5 hours 3 hours 1.5 hours 1 hour 0.5 hours 4 hours 2 hours 0.5 hours ONA Notes: SCS=Shutdown Cooling System ONA=Operation not allowed Page 23 of 23}}
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