ML20072E066

Monthly Operating Rept for Jul 1994 for Calvert Cliffs Nuclear Power Plant Units 1 & 2

ML20072E066
Person / Time
Site:	Calvert Cliffs
Issue date:	07/31/1994
From:	Cruse C, Piazza F BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9408220094
Download: ML20072E066 (11)

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jl CnAntes 11. Cnuse Baltimore Gas and Electric Con.,- 'ny Plant General Manager Calvert Chfs Nuclear Power Plant Calvert Clifs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410 586-2200 Ext. 4101 Local 4to 260-4101 Baltimore 1

l August 12,1994 U. S. 'Nuc! car Regulatory Commission Washington, DC 20555 A'ITENTION:

Document Control Desk

SUBJECT:

Calvert Clifts Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 July 1994 Oogralinn Data Reports The subject reports are being sent to you as required by Technical Specification 6.9.1.6.

Should you have any questions, please contact Mr. Bruce Mrowca at (410) 260-3989.

Very t y yours,

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V CIIC/FP/bjd Attachments cc:

D. A. Brune, Esquire J. E. Silberg, Esquire M. K. Boyle, NRC D. G. Mcdonald, Jr., NRC T. T. Martin, NRC P. R. Wilson, NRC R. A.11artfield, NRC R. I. McLean, DNR J. II. Walter, PSC P. Lewis, INPO K. Larson, ANI

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

i August 12, 1994 Prepared by Frank Piazza Telephone:(410)260-3821 OPERATING STATUS 1.

UNIT NAME Calvert Cliffs Unit 1

2. REPORTING PERIOD JULY 1994 3.

LICENSED THERMAL POWER (MWT) 2700

4. NAMEPLATE RATING (GROSS MWe) 918

5. DESIGN ELECTRICAL RATING (NET MWe) 845

6. MAXIMUM DEPENDABLE CAP'Y (GROSS MWe) 865 7.

MAXIMUM DEPENDABLE CAP'Y (NET MWe) 835 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 5,087 168,588

12. NUMBER OF-HOURS REACTOR WAS CRITICAL 554.7 2,238.7 119,207.7

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 3,019.4

14. HOURS GENERATOR ON LINE 534.0 1,985.1 116,563.5

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0 i

16. GROSS THERMAL' ENERGY GENERATED (MWH) 1,422,377 4,971,188 2Mi,286,007

17. GROSS ELECTRICAL ENERGY GEN'TED(MWH) 460,620 1,632,o16 98,106,162

18. NET ELECTRICAL ENERGY GENERATED (MWH) 440,587 1 E57,223 93,361,505 3

19. UNIT SERVICE FACTOR 71.3 39.0 69.1

20. UNIT AVAILABILITY FACTOR

/1.8 39.0 69.1

21. UNIT CAPACITY FACTOR (USING MDC MET) 70.9 36.8 67.1

22. UNIT CAPACITY FACTOR (USING DER NET) 70.1 36.2 65.5

23. UNIT FORCED OUTAGE RATE 28.2 26.5 9.1

24. SHUTDOWNS SCHEDUI-ED OVER THE hEXT SIX MONTHS (TYPE, DATE AND DURATION):

N/A

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

N/A 1

UNIT SIlUTDOWNS AND FOWER REDUCTIONS DOCKET NO.

50-317 UNIT NAME Calwrt Cliffs-UI DATE Aueust 12.1994 COMPLETED BY Frank Piazza TELEPHONE (410) 260 3821 REPORT 510NTII Jniv 1994

'iE TIIOD OF F,ilUTI1NG LICENSEE CAUSE & CORRECrlVE DURNIlON DOWN EVENT SYSTEM COMPONENT ACT10N TO 3

REPORT #

CODE CODES PREVENT RECURRENCE N O.

DATE TYPEI (IlOURS)

REASON 2 REACTOR 4

94-08 940719 F

210h A

3 317/94007 TA ECBD The unit automatically tripped on July 19,1994 at 1824 due to low Steam Generator water level. Low water level was initiated after all four Main Turbine Stop Valves (MTSV) closed. An electronic control card called the Servo Amplifier Demodulator Indicator (SADI) was the cause of the MTSVs closing. The control card which controls the #2 MTSV failed, closing the #2 MTSV which then caused the remaining three valves to close. The problem was corrected by replacing the SADI board.

Investigation teams were formed to determine the cause of the failure and future prevention measures.

'The unit was returned to power and paralleled to the grid on July 28,1994 at 1226.

I F: Forced 2 Reason:

3 Afethod:

4 IEEE Standard 805-1984 S: Scheduled A-Equipment Failure 1 - hianual B - hiaintenance or Test 2 - hianual Scram.

C - Refueling 3 - Automatic Scram.

5 IEEE Standard 803A-1983 D - Regulatory Restriction 4 - Continued E - Operator Training & License Examination 5 - Reduced Load F-Administrative 9 - Other G - Operational Error II-Other

AVERAGE DAILY UNIT POWER LEVdL CQA****A*****h**********************************************************

Docket No. 50-317 Calvert Cliffs Unit No. 1 August 12, 1994 Drapared by Frank Piazza Telephone: (410) 260-3821 JULY 1994 Average Daily Power Level Average Daily Power Level Day (MWe-Net)

Day (MWe-Net) 1 843 17 836 2

843 18 835 3

843 19 630 4

842 20 0

5 842 21 0

6 841 22 0

7 836 23 0

8 839 24 0

9 839 25 0

10 838 26 0

11 836 27 0

12 837 28 138 j

13 834 29 825 14 839 30 834 15 839 31 833 16 837

DOCKET NO. 50-317 CALVERT CLIFFS - UNIT 1 August 12,1994

SUMMARY

OF OPERATING EXPERIENCE l

July 1994 The unit began the month at 100% reactor power. On July 19,1994 at 1824 the reactor automatically tripped due to low Steam Generator level which was initiated by the shutting of all four Main Turbine Stop Valves (MTSV). An investigation team was immediately formed and determined that the valves closing was most probably caused by an intermittent failure of an electronic control card. Concurrent with the trip a Code Safety Relief Valve began leaking by its seat. The electronic control card and the Code Safety Relief \\ a were replaced. The unit was again paralleled to the grid on July 28,1994 at 1226. The unit continued operating at 100% reactor power for the remainder of the month.

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• August 4,1994

. NFM 94-229 Page 2 of 3 i

REFUEt,ING INFORMATION REOUEST L

1.

Name of facility: Calvert Clifts Nuclear Power Plant, Unit No. l.

2.

Scheduled date for next refueling shutdown: March,1996 J

3.

Scheduled date for restart following refueling: May,1996.

4.

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

None identified at this time.

5.

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

Unknown.

6.

Important licensing considerations associated with the refueling.

Nnne identified at this time.

7.

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

(a) 217 (b) 1490 (Note 2)a i

Spent fuel pools are common to Units I 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) 4710 (Note 1)

(b) 0 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 2014 NOTE 1:

4710 total licensed site storage capacity.

- (1830 pool + 2880 ISFSI)

NOTE 2:

72 Spent Fuel Assemblies in the ISFSI.

24 in transit to ISFSI.*

Entry has changed since last reported.

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UNIT 2 OPERATING DATA REPORT

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Docket No. 50-318 August 12, 1994 Prepared by Frank Piazza Telephone:(410)260-3821 OPERATING STATUS 1.

UNIT NAME Calvert Cliffs Unit 2

2. REPORTING PERIOD JULY 1994 3.

LICENSED THERMAL POWER (MWT) 2700 4.

NAMEPLATE RATING (GROSS MWe) 911 5.

DESIGN ELECTRICAL RATING (NET MWe) 845

6. MAXIMUM DEPENDABLE CAP'Y (GROSS MWe) 870 7.

MAXIMUM DEPENDABLE CAP'Y (NET MWe) 840 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 5,087 151,943

12. NUMBER OF HOURS REACTOR WAS CRITICAL 690.7 4,713.8 110,750.6 13.' REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 1,296.6

14. HOURS GENERATOR ON LINE 684.2 4,702.4 109,226.0

15. UNIT RESFRVE SHUTDOWN HOURS 0.0 0.0 0.0

16. GROSS THERMAL ENERGY GENERATED (MWH) 1,819,989 12,483,164.279,348,707

17. GROSS ELECTRICAL ENERGY GEN'TED(MWH) 587,793 4,163,088 92,318,957

18. NET ELECTRICAL ENERGY GENERATED (MWH) 562,969 3,996,945 88,240,079

19. UNIT SERVICE FACTOR 92.0 92.4 71.9

20. UNIT AVAILABILITY FACTOR 92.0 92.4 71.9

21. UNIT CAPACITY FACTOR (USING MDC NET) 90.1-94.3 70.4

22. UNIT CAPACITY FACTOR (USING DER NET) 89.5 93.0 68.7

23. UNIT FORCED OUTAGE RATE 8.0 4.8 5.7

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

N/A j

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

N/A j

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UNIT SilUTDOWNS AND POWER REDUCrlONS DOCKETNO.

50-318 UNIT NAhtE Calvert Cliffs-U2 DATE Aucust 12,1994 COMPLETED BY Frank Piarra TELEPHONE (410) 260-3821 REPORT MONTII July 1994 MFTIIOD OF SIIUTHNG LICENSEE CAUSE & CORRECTIVE DURATION DOWN EVENT SY3 TEM COMPONENT ACrlON TO (110URS)

REASON 2 REACTOR 3 REPORT #

CODE 4 CODE PREVENT RECURRENCE 5

NO.

DATE TYPEI 44-05 940711 F

59.8 A

1 318,94003 BP PSF The unit was manually shutdown on July 11,1994 due to a Reactor Coolant system leak. The leak was caused by a crack in a weld of a Safety injection Tank discharge vent line. The crack was caused by high vibration due to a lack of vent line support rigidity. The vent line support was redesigned with more rigsdity to decrease vibrations.

Walkdowns were also done to inspect other similar vent lines which were determined to be sufficient.

The reactor was returned to power at 2328 on 7/13;94.

1 F: Forced 2 Reason:

3 Method:

4 IEEE Standard 805-1984 S: Scheduled A - Equipment Failure 1 - Manual B - Maintenance or Test 2 - Manual Scram.

C - Refueling 3 - Automatic Scram.

5 IEEE Standard 803A-1983 D - Regulatory Restriction 4 - Continued E - Operator Training & License Examination 5 - Reduced Load F-Administrative 9 - Other G - Operational Error H - Other

AVERAGE DAILY UNIT POWER LEVEL lco**********************************************************************

Docket No. 50-318 Calvert Cliffs Unit No. 2 August 12, 1994 Prepared by Frank Piazza Telephone: (410) 260-3821 JULY 1994 Average Daily Power Level Average Daily Power Level Day (MWe-Net)

Day (MWe-Net) 1 840 17 831 2

841 18 829 4

3 841 19 831 4

839 20 836 5

840 21 836 6

840 22 836 7

837 23 834 8

836 24 832 9

838 25 831 10 838 26 829 11 502 27 830 4

12 0

28 832 13 0

29 814 14 444 30 825 15 832 31 833 16 831 l

DOCKET NO. 50-318 CALVERT CLIFFS - UNIT 2

- August 12,1994

SUMMARY

OF OPERATING EXPERIENCE July 1994 The unit began the month at 100% power. On July 11 at 1315 commenced reactor shutdown to repair a Reactor Coolant system vent line leak on the Safety injection Tank (SIT). The leak was repaired and the unit was paralleled to the grid on July 14,1994 at 0412. The unit was returned to power and reached 100% reactor power at 2110.

On July 29,1994 at 1705 reactor power was reduced slightly to 92.5% for cleaning 22B and 23B water boxes. The unit was returned to 100% for the remainde of the month on July 30,1994 at 0415.

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Augtjst 4.1994

. NFM 94 229 Page 3 of 3 REFilEt,1NG INFORMATION REOllEST 1.

Name of facility: Calvert Cliffs Nuclear Power Plant, Unit No. 2 2.

Scheduled date for next refueling shutdown: February 18.1995.

3.

Scheduled date for restart following refueling: May 3.1995.

4.

Will refueling or resumption of t peration thereatler require a Technical Specification changu or other license amendment?

Unknown.

5.

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

Unknown.

6.

Important licensing considerations asseciated with the refueling.

None identified at this time.

7.

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

(a) 217 (b) 1490(Note 2)*

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) 4710 (Note 1)

(b) 0 9

The projected date of the la<t refueling that can be discharged to the Spent Fuel Pool assuming the present licensed capacity and maintaining space for one full core off-load Maich 2016.

NOTE 1:

4710 total licensed site storage capacity.

(1830 pool + 2880 ISFSI)

NOTE 2:

72 Spent Fuel Assemblics in the ISFSI.

24 in transit to ISFSI.*

Entry has changed since last ressorted.

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