ML20095B112

Monthly Operating Repts for Mar 1992 for Calvert Cliffs Nuclear Power Plant

ML20095B112
Person / Time
Site:	Calvert Cliffs
Issue date:	03/31/1992
From:	Denton R, Shanley L BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9204210366
Download: ML20095B112 (11)

Text

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BALTIMORE CAGAND ELECTRIC

[

CHARLES CENTER e P.O. BOX 1475

• BALTIMORE. MARYLAND 21203-1475 R E DENioN GlhERAL MANAGEH CALVERT CLIFFS

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April 14,1992 U. S. Nuclear Regulatory Commission Washington, DC 20555 A'ITENTION:

Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50 318 March 1992 Operatine Data Reports Gentlemen:

The subject reports are beiag sent to you as t< quired by Technical Specification 6.9.1.6.

Should you have any questions, please contact Mr. Bruce Mrowca at (410).'60-3989.

'ery'ruh yours, x

[

]

RED /LBS/bjd Attachments cc:

D. A. Brune, Esquire J. E. Silberg. Esquire R. A. Capra, NRC D. G. Mcdonald, Jr., NRC T. T. Martin, NRC P. R. Wilson, NRC R. I. McLean, DNR J. H. Waltc r, PSC R. A. Hartfiel<!, NRC

1. 2 Q 3,/

P. Lewis, INPO

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K. Larson, ANI 2200"c

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0204210366 920331 PDR ADOCK 05000317 l

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UNIT SIIUTDOWNS AND POWER REDUCTIONS DOCKETNO.

50-317 UNIT NAME Calvert Cliffs-U1 DATE

' April 14.1992 COMPLETED BY Leo Shanley TELEPliONE (41012(IM744 REPORT MONTil March 1992 METIIOD OF SilUTDNG LICENSEE CAUSE & CORRECTIVE DURATION DOWN EVENT SYSTEM COMPONENT ACHON TO NO.

DATE TYPEI (IlOURS)

REASON 2 REACTOR 3 REPORT #

CODE 4 CODES PREVENT RECURRENCd 92-01 920319 F

24.0 H

1 1-92-002 EE GENERA

1) Unit was shutdown when all three EDGs were declared inoperable.

2) An inspection reve led that during certain o

accident scenarios, sequential loading of the EDGs could occur in a manner not analyzed.

3) Temporary modifications were made to allow for contirued shutdown operations. The LOCI sequencers will be modified during the up-coming refueling outage.

92-02 920320 S

278.9 C

4 Refueling outage.

I F:

Forced 2 Reason:

3 Method:

4 Exhibit F-Instructions S:

Scheduled A-Equipment Failure 1-Manual for Preparation of Data

' B-Maintenance or Test 2-Manual Scram.

Entiy Sheets for License C-Refueling 3-Automatic Scram.

Event Report (LER) File D-Regulatory Restriction 4-Co.itinued (NUREG-0161)

E-Operator Training & License Examination 5 Reduced Lo:d F-Administrative 9-Other 5 Exhibit II-Same Source G-Operational Error 11-Other

I GC6*************************************************************************

UNIT 1 OPERATING DATA REPORT co**************************************************************************

Docket No. 50-317 April 14, 1992 Prepared by Leo Shanley Telephone:(410)260-6744 OPERATING STATUS 1.

UNIT NAME Calvert Cliffs Unit 1

2. REPORTING PERIOD MARCH 1992 3.

LICENSED THERMAL POWER (MWT) 2700 4.

NAMEPLATE RATING (GROSS MWe) 918 5.

DESIGN ELECTRICAL RATING (NFT MWe) 845

6. MAXIMUM DEPENDABLE CAP'Y (GROSS MWe) 860

7. MAXIMUM DEPENDABLE CAP'Y (NET MWe) 825 8.

CHANGE IN CAPACITY RATINGS NONE 9.

POWER LEVEL TO WHICH RESTRICTED N/A

10. REASONS FOR RESTRICTIONS N/A Cumulative This month Year-to-Date to Date

11. HOURS IN REPORTING PERIOD 744 2,184 148,141

12. NUMBER OF HOURS REACTOR WAS CRITICAL 442.0 1,832.0 105,181.8

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 3,019.4

14. HOURS GENERATOR ON LINE 441.1 1,881.1 102,931.6

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MWH) 1,191,679 5,052,583 259,389,090

~

17. GROSS ELECTRICAL ENERGY GEN'TED(MWH) 392,627 1,676,717 86,212,405

18. NET ELECTRICAL ENERGY GENERATED (MWH) 376,479 1,609,202 81,964,707

19. UNIT SERVICE FACTOR 59.3 86.1 69.5

20. UNIT AVAILABILITY FACTOR 59.3 86.1 69.5

21. UNIT CAPACITY FACTOR (USING MDC NET) 61.3 89.3 67.1

22. UNIT. CAPACITY FACTOR (USING DER NET) 59.9 87.2 65.5

23. UNIT FORCED OUTAGE RATE 5.2 1.3 9.3

24. SHUTDOWNS SCHEDULED OVER THE NEXT SIX MONTHS (TYPE, DATE AND DURATION):

N/A

25. IF SHUTDOWN AT END OF REPORT "RRIOD, ESTIMATED DATE OF START-L :

June 29, 1992 I

i 1

l AVERAGE DAILY UNIT POWER LEVEL oco*****+***************************************************************

Docket No. 50-317 Calvert Cliffs Unit No. 1 April 14, 1992 Prepared by Leo Shanley Telephone: (410) 260-6744 MARCH 1992 Average Daily Power *,evel Average Daily Power Level Day (MWe-Net)

Day (MWe-Net) 1 857 17 856 2

857 18 854 3

858 19 257 4

858 20 0

5 858 21 0

6 858 22 0

7 859 23 0

8 858 24 0

9 859 25 0

10 857 26 0

11 857 27 0

12 857 28 0

13 855 29 0

14 857 30 0

15 857 31 0

16 857 l

1

^

DOCKET #50-317 CALVERT CLIFFS - UNIT 1 April 14,1992

SUMMARY

OF OPERATING EXPERIENCE March 1992 The unit began the month at 100% power (860 MWe).

A coastdown war. 'mmenced on March 15 in preparation for the up-coming refueling outage.

At 0515 on March 19, all three Emergeacy Diesel Generators (EDGs) were declared inoperable when it was determined that a degraded voltage condition could occur on safety equipment buses during certain improbable accident scenarios. A unit shutdown was commenced.

The unit was removed froni the grid at 0904 and the reactor was shutdown at 1000. The unit entered hot shutdown (Mode 4) at 2200.

The scheduled refueling outage was commenced on March 20.

The unit ended the month in cold shutdown (Mode 5).

l l-l

f l

April 6, 1992 REFUELINC INFORMA710H REQUEST 1.

Name of facility: Calvert Cliffs Nuclear Power Plant, Unit No.1.

2.

Scheduled date for next refueling shutdown:

March 20, 1992**.

3.

Scheduled date for restart following refueling: June 29, 1992*.

4.

Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?

The Tech Spec concerning Unit 1 Cycle 11's maximum enrichment per reload core (4.35 w/o) must be approved prior to on loading the core.

Resumption of operation after refueling will require changes to Technical Specifications. The anticipated changes will effect consistency between the Unit 2 Cycle 9 Tech Specs and the Tech Specs for Unit 1 Cycle 11.

5.

Scheduled date(s) for submitting proposed licensing action and supporting information.

Submitted, December 10, 1991.

6.

Important licensing considerations associated with the refueling.

License submittal under review by PC.

7.

The number of fuel assemblies (a) in the core and (b) in the spent fuel storage pool.

(a) 217.

(b) 1325.

Spent fuel pools are common to Units 1 and 2.

8.

(a) The present licensed spent fLel pool storage capacity, and (b) the size of any increase in licensed storage capacity that has been requested or is planned, in number of fuel assemblies.

(a) 1830.

(b) 2880.

9.

The projected date of the last refueling that can be discharged to the Spent Fuel Pool assuming the present licensed capacity ano maintaining space for one full core off-load.

March 1993

• Entry has changed since last reported.

• • OUTAGE START DATE. Unit currently in a refueling outage.

l

t 9

coo *************************************************************************

UNIT 2 OPERATING DATA REPORT co**************************************************************************

Docket No. 50-318 April 14, 1992 Prepared by Leo Shanley Telephone:(410)260-6744 OPERATING STATUS

1. UNIT NAME Calvert Cliffs Unit 2 2.

REPORTING PERIOD MARCH 1992 3.

LICENSED THERMAL POWER (MWT) 2700 4.

NAMEPLATE RATING (GROSS MWe) 918 5.

DESIGN ELECTRICAL RATING (NET MWo) 845 6.

MAXIMUM DEPENDABLE CAP'Y (GROSS MWe) 860 7.

MAXIMUM DEPENDABLE CAP'Y (NET MWe) 825 8.

CHANGE IN CAPACITY RATINGS MONE 9.

POWER LEVEL TO WHICH RESTRICTED N/A

10. REASONS FOR RESTRICTIONS N/A Cumu)ative This month Year-to-Date to Date

11. HOURS IN REPORTING PERIOD 744 2,184 131,496

12. NUMBER OF HOURS REACTOR WAS CRITICAL 443.7 1,854.2 93,894.5 13, REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 1,296.6

14. HOURS GENERATOR ON LINE 442.3 1,833.1 92,555.3

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0

16. GROSS THERMAL ENERG'E GENERATED (MWE) 1,187,878 4,906,234 235,045,540

17. GROSS ELECTRICAL ENERGY GEN'TED(MWH) 395,431 1,632,808 77,717,189

18. NET ELECTRICAL ENEFCY GENERATED (MWH) 379,260 1,567,156 74,245,304

19. UNIT SERVICE FACTOR 59.4 83.9 70.4

20. UNIT AVAILABILITY FACTOR 59.4 83.9 70.4

21. UNIT CAPACITY FACTOR (USING MDC NET) 61.8 87.0 68.4

22. UNIT CAPACITY FACTOR (USING DER NET) 60.3 84.9 66.8

23. UNIT FORCED OUTAGE RATE 40.6 16.1 5.8

24. SHUTDOWNS SCHEDULED OVER THE NEXT SIX MONTHS (TYPE, DATE AND DURATION):

N/A

25. IF UNIT IS SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF START-UP:

April 3, 1992

UNIT SIIUTl) OWNS AND l'OWER REDUCI1ONS DOCKETNO.

'D-318 UNITNAME Calvert Clifis-U2 DATE April 14.1992 COMPLETED BY Leo ShanIev T11LEPHONE f41012NM741 REPORT AfONTil March 1992 MElllOD OF CAUSE & CORRECITVL SIIUTHNG LICENSEE DURAT10N DOWN EVENT SYS'iliM COMPONENT ACIlON TO 4

CODES PREVENT RECURRENCE I

(llOURS)

REASON 2 REACTOR 3 REPORT #

CODE NO DATE TYPE 92-02 920319 F

301.7 H

1 1-92-002 EE GENERA

1) Unit was shutdown when allIhree EDGs were declared inoperable.

2) An inspection revealed that during certain accident scenarios, sequential loading of the EDGs could occur in a manner not analyzed.

3) Installed modifications to the EDG LOCI sequencers.

1 4 Exhibit F - Instructions 3 Afethod:

2 Reason:

1 F:

Forced 14fanual for Preparation of Data S:

Scheduled A-Equipment Failure 241anual Scram.

Entry Sheets for License B-Maintenance or Test 3-Automatic Scram-Event Report (LER) File C-Refueling 4-Continued (NUREG-0161)

D-Regulatory Restriction 5-Reduced Load E-Operator Training & License Examiration 5 Exhibit H -Same Source 9-Other F-Administrative G-Operational Error H-Other

AVERAGE DAILY UNIT POWER LEVEL Docket No. 50-318 Calvert Cliffs Unit No. 2 April 14, 1992 Prepared by Leo Shanley Telephone: (410) 260-6744 MARCH 1992 Average Daily Power Level Average Daily Power Level Day (MWe-Net)

De.y (MWe-Net)

.s

...t

~i 860 17 861 1*/j.

e 863 18 862 g.j 6

=

3 864 19 276 4

864 20 0

5 863 21 0

6 863 22 0

7 864 23 0

8 863 24 0

9 863 25 0

10 864 26 0

~

11 864 27 0

e 12 862 28 0

13 861 29 0

14 862 30 0

15 862 31 0

16 861

t DOC'KET #50-318 CALVERTCLIFFS UNIT 2 April 14,1992

SUMMARY

OF OPERATING EXPERIENCE March 1992 The una oegan the month at 100% power (860 MWe).

At 0515 on March 19, all three Emergency Diesel Generators (EDGs) were declared inoperable when it was determined that a degraded voltage condition could occur on safety equipment buses during certain improbabic accident scenarios, A unit shutdown was commenced.

- The unit was removed from the grid at 1020 and the reactor was shutdown at i140. The unit entered hot shutdown (Mode 4) at 2230.

Modifications were made to the LOCI sequencers.

The unit ended the month in Mode 5 with preparations being made for a Reactor Startup.

I April 6, 1992 BEFUELING INFORMATION REQUESI 1.

Name of facility:

Calvert Cliffs Nuclear Power Plant Unit No. 2 2.

Scheduled date for next refueling shutdown:

March 5, 1993.

3.

Scheduled date for restart following refueling:

May 17, 1993.

4.

Will refueling or resumption of operation thereaf ter require a Technical Specification change or other license amendment?

Not identified at this time.

5.

Scheduled date(s) for submitting proposed licensing action and supporting information.

November 17, 1992.

6.

Important licensing considerations associated with the refueling.

The target length for this cycle will be 702 effective full power days *.

7.

The number of fuel assemblies (a) in the core and (b) in the spent fuel s'_crage pool.

(a) 217.

(b) 1326.

Spent fuel pools are common to Units 1 and 2.

8.

(a) The present licensed spent fuel pool storage capacity, and (b) the size of any increase in licensed storage capacity that has been requested or is planned, in number of fuel assemblies.

(a) 1830.

(b) 2880.

9.

The projected date of the last refueling that can be discharged to the Spent Fuel Pool assuming the present licensed capacity and maintaining space for one full core off-load.

March 1993

• Entry has changed since last reported.

_