rev 0 to colr 2-5, 'core operating limits rept for diablo ...diablo canyon power p title: colr...

PG8 Letter No. DCL-91-247

ENCLOSURE

CORE OPERATING LIMITS REPORTDIABLO CANYON UNIT 2 CYCLE 5

5509S/0085K .—

9ii0240i07 PiiOi4PDR ADOCK 05000323P PDR

PACIFIC GAS AND ~ CTRIC COMPANY

DEPARTHENT OF NUCLEAR POWER GENERATION

DIABLO CANYON POWER PLANT

NUMBER

REVISION

PAGE

UNIT

COLR 2-5

0

1 OF 7

CORE OPERATING LIHITS REPORT

TITLE: COLR FOR DIABLO CANYON UNIT 2 CYCLE 5

APPROVED:DA E EFF TI D TE

~ PROCEDURE CLASSIFICATION — QUALITY RELATED ~

1.0 CORE OPERATING LIMITS REPORT

This Core Operating Limits Report (COLR) for Diablo Canyon Unit 2Cycle 5 has been prepared in accordance with the requirements ofTechnical Specification (Tech Spec) 6.9.1.8.

The Tech Specs affected by this report are listed below:

3/4.1.3.53/4.1.3.63/4.2.13/4.2.2

2.0 OPERATING LIMITS

Shutdown Rod Insertion LimitControl Rod Insertion LimitsAxial Flux DifferenceHeat Flux Hot Channel Factor — FQ(z)(Surveillance Requirements only)

The cycle-specific parameter limits for the specifications listed inSection 1.0 are presented in the following subsections. These limitshave been developed using the NRC-approved methodologies specified inTech Spec 6.9.1.8.

2.1

2.2

2.3

Shutdown Rod Insertion Limit (Tech Spec 3/4.1.3.5)

2.1.1 The shutdown rods shall be withdrawn to at least 225steps.

Control Rod Insertion Limits (Tech Spec 3/4.1.3.6)

2.2.1 The control rod banks shall be limited in physicalinsertion as shown in Figure 1.

Axial Flux Difference (Tech Spec 3/4.2.1)

2.3.1 The AXIAL FLUX DIFFERENCE (AFD) Limits for Unit 2 Cycle 5

are provided in Figure 2.

01076400.04a 1I

DIABLO CANYON POWER P


NUMBER COLR 2-5REVISION 0PAGE 2 OF 7

UNIT 2

2.4 Heat Flux Hot Channel Factor — F z (Tech Spec 3/4.2.2)

3.0 FIGURES

2.4.1 The W(z) curves for Relaxed Axial Offset Control (RAOC)operation, provided in Figures 3 through 5 for Unit 2,Cycle 5, are sufficient to determine the RAOC W(z) versuscore height for Cycle 5 burnups through the end of fullpower reactivity plus a power coastdown of up to1000 MWD/MTU.

3.1

3.2

3.3

3.4

3.5

4.0 RECORDS

None

Figure 1, Rod Bank Insertion Limits Versus Thermal Power

Figure 2, AFD Limits as a Function of Rated Thermal Power

Figure 3, Load Follow W(z) at 150 MWD//MTU as a Function of CoreHeight

Figure 4, Load Follow W(z) at 8000 MWD/MTU as a Function of CoreHeight

Figure 5, Load Follow W(z) at 16000 MWD/MTU as a Function of CoreHeight

5.0 REFERENCES

5.1 "Westinghouse Reload Safety Evaluation for Diablo Canyon PowerPlant Unit 2 Cycle 5," dated July 1991.

6.0 RECORD OF REVIEWS

6.1 Prepared by: Chris A. Hieb

6.2 Sponsored by: Chris A. Hieb

6.3 , Independent Technical Review by: T.L. Grebel

01076400.04a 2I

DIABLO CANYON POMER P



UNIT 2

(Fully Withdrawn. > 225 Steps)

(m

~ XQ

.4 .5 .6 .7FRACTIOI tF RAlED TlGQLL 8%R

Figure 1

Rod Bank Insertion Limits Versus Rated Thermal Power

01076400.04a 3I




UNIT 2

120

100

UNACCEPTABLEOPERATION

-1, 1

UNACCEPTABLEOPERATION

~ 80

60

ClI

hac 40

ACCEPTABLEOPERATION

20

0 -50 -40 -30 -20 -10 0 10 20 30 l0 50 60FLUX DIFFERENCE (DELTA l)X

Figure 2

AFD Limits as a Function of Rated Therma1 Power

01076400.04a 4I



NUHBERREVISIONPAGE

UNIT

COLR 2-505 OF 7

1.45

1. 40

1.35

1.30

1.25

1.20

1. 15

1. 10

1.05

1. 006 d

CNK KICHT (FEW)10 12

He 1 eht(Feet)

~ 0.00000~ 0.2000O

0. 40000~ O.SOOOO'.80000

1. 00001. 20001. 4000

~ I. SOOOI ~ 80002.00002. 20002. 40002odooo2. 80003. 00003. 20003. 40003. 80003. 80004.00004 ~ 20004. 40004 ~ 80004. 80005. 00005. 20005. 40005.50005. 8000e. 0000e. 20008.4000e. 8000S.sooo7.00007.20007 ~ 40007. 80007. 80008.0000S. 2000S. 4000S. 8000S. 80009. 00009. 20009. 40009. 80009. 800010. 000

~ 10. 200~ 10. 400~ 10. 800

IO. SOO~ 11.000~ 11. 200~ 1'1.400~ 11. 800

11. 800~ 12.000

801.Vt Z)

1. 0000'I . 00001. 00001. 00001. 00001. 0000I . 0000I . 00001. 00001. 00001. 39841. 38041.33OS1. 30471.27511.23931.2128'I 203 I1. 19431. 19001. 18821. 18071. 17481. 18781 ~ 18131 ~ 15491 14781. 1393I ~ 1301l. 12351. 131d1. 14831. 18101 ~ 1728t. 183 t1. 19171. 19881 ~ 20351. 20841. 20731. 20801 ~ 2028t. 1987I, 1882l. 1838I ~ 19881,21931.23881. 25991.27981,29411.00001. 00001. 00001. 00001. 00001. 00001. 0000I . 00001. 00001. 0000

Figure 3

Load Follow W(z) at 150 HWD/HTU as a Function of Core Height

~ Tco eho eottoe tdX~xc Ivoec 44 pehTechh1 ca I5PeC'I F ICot toh4.2.2.1.2.t)

01076400.04a 5I

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'ITLE: COLR FOR DIABLO CANYON UNIT 2 CYCLE 5

NUMBERREVISIONPAGE

UNIT

COLR 2-507 OF 7

1. 40

1.35

1.30

1. 25

1. 15

1. 10

1.05

1.00

44

6 dCtNE m>Ce (rEEr)

10 12

Hotont(Foot)

~ 0.00000~ 0. 20000~ 0. 40000~ 0. 80000~ 0. 80000

1.0000~ 1.2000

I ~ 4000I ~ $0001.80OO2 ~ 00002 ~ 20002 ~ 40002. $0002. 80003. 00003. 20003 ~ 40003 ~ 80003. 80004 ~ 00004. 20004 ~ 40004 ~ $0004. 80005.00005.20005. 4ON5. $0005 8000$ .00008.2000~ . 4000d.dOOOd. $0007 ~ 00007.20007. 40007. $0007 ~ $000$ .0000$ . 2000$ . 4000$ . $000$ . 80009. 00009. 20009. 40009. $0009. 800010. 000

~ 10. 200~ 10. 400~ 10. $00~ 10. $00~ 11. 000~ 11.200

11.400~ 11. $00~ 11. $00~ 12.000

EQI.IIIZ I

'I . 00001. 00001. 00001. 0000I ~ 0000'I . 00001.0000I ~ 00001. 00001. 00001. 20991. 19171. 179$1. t7451. 1720I, 18411. ISSO1. 15841, 1813I 18511. 17171. 18121. 19091 ~ 2014I,21081. 218$1.22'3 t1 a 2280I ~ 24801.2$ $ $1. 28971. 3071I+32141.33241. 339$1.34371 ~ 343$1. 34031.3331'I. 32211. 30811.28971. 27121.28121 ~ 247$1. 23721.238$1.24811.254$1.2$ OS1.27321. 00001.00001.00001. 00001. 00001. 0000I ~ 00001. 00001 ~ 0000'I . 0000

~ 7cp onct dottoa tda~~cIUctoo oo potTocnn Ico ISpoctF teat ton4 '.2.1.2.0Figure 5

Load Follow W(z) at 16000 MWD/MTU as a Function of Core Height

01076400.04a 7I

e 4

C' ~ s.

Distribution SheetDistri37.txt

Priority: Normal

From: Stefanie Fountain

Action Recipients:S BloomNRR/DLPM/LPD4-2

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Item: ADAMS DocumentLibrary: ML ADAMS"HQNTAD01ID: 003686891:1

Subject:LER 2000-001-00:on 01/26/00,Technical Specification 3.4.8 not met.Caused by personnelerror.Involved individual was counseled;

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Distri37.txtBody:ADAMS DISTRIBUTION NOTIFICATION.

Electronic Recipients can RIGHT CLICKand OPEN the first Attachment to Viewthe Document in ADAMS. The Document may also be viewed by searching forAccession Number ML003686891.

IE22 - 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.

Docket: 05000323

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