ML20216H603

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Monthly Operating Repts for Aug 1997 for Beaver Valley Power Station
ML20216H603
Person / Time
Site: Beaver Valley
Issue date: 08/31/1997
From: David Jones, Legrand R
DUQUESNE LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9709160321
Download: ML20216H603 (11)
v • d • e


Text

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O. a4 Shippingport. PA 15077 0004 September 8,1997 Beaver Valley Power Station Unit 1 - Docket No. 50 334, License No. DPR-66 Unit 2 - Docket No. 50-412, License No. NPF-73 j Monthly Operating Report U. S Nuclear Regulatory Commission Document Control Desk l

Washington, DC 20555 l

l Gentlemen: l In accordance with Appendix A, Technical Specifications, the Monthly Operating Report is submitted for Unit I and Unit 2 for the month of August,1997, Respectfully, en f R. L. LeGrand Division Vice President, Nuclear Operations /

Plant Manager DTJ/ sip gt if Enclosures cc: NRC Regional Office King of Prussia, PA llllfffllllll0ll0llflfll

.s , , flfllllllll The Nuclear Professionals JW 9709160321 970831 DR ADOCK 050003 4

NARRATIVE SUMhiARY OF MONTHLY OPERATING EXPERIENCE UNIT 1 AUGUST 1997 August 1 The Unit began the report period operating at approximately 30% output while starting up following an outage in July. l August 2 A nominal output of 100% was achieved at 0556 hours0.00644 days <br />0.154 hours <br />9.193122e-4 weeks <br />2.11558e-4 months <br />.

August 3 The Unit operated at a nominal value of 100% output.

through August 4 August 5 One of four Refueling Water Storage Tank (RWST) level transmitters was removed from sersice for transmitter replacement while the Unit was operating at a nominal value of 100% output. When a second RWST level transmitter went offscale high, it was declared inoperable placing the Unit into the action statements of Technical Specif: cation 3.0.3. As a result, a power reduction was initiated at 1412 hours0.0163 days <br />0.392 hours <br />0.00233 weeks <br />5.37266e-4 months <br />. The power reduction was halted at approximately 99% output when the first RWST level transmitter was returned to service. Technical Specification 3.0.3 was exited at 1541 hours0.0178 days <br />0.428 hours <br />0.00255 weeks <br />5.863505e-4 months <br />, and the Unit was returned to a nominal value of 100% output at 1705 hours0.0197 days <br />0.474 hours <br />0.00282 weeks <br />6.487525e-4 months <br />.

August 6 At 1308 hours0.0151 days <br />0.363 hours <br />0.00216 weeks <br />4.97694e-4 months <br /> with the Unit operating at a nominal value of 100% output, a 345KV system fault occurred in the switchyard of the Bruce Mansfield Power Plant tripping the Mansfield #1 and #2 345KV lines to Beaver Valley. The grid disturbance also caused all three Bruce Mansfield Units to trip off-line. This resulted in a drop in the grid fr'equency which caused reactor power to increase approximately 1%. As a result, a power reduction to approximately 99% output was initiated at 1316 hours0.0152 days <br />0.366 hours <br />0.00218 weeks <br />5.00738e-4 months <br />.

The Unit was subsequently returned to a nominal value of 100% output at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />.

August 7 With the Unit operating a nominal value of 100% output, a reactor trip occurred at 2018 hours0.0234 days <br />0.561 hours <br />0.00334 weeks <br />7.67849e-4 months <br /> following a turbine trip caused by a high steam generator level in the "A" Steam Generator due to the associated "A" Main Feedwater Regulating Valve failing open.

August 8 The Unit remained shutdown in Mode 3 while an investigation into the cause of the through reactor trip continued. The investigation revealed that the root cause of the trip was August 9 the existence of excess solder on one connection in a feedwater control module. The excess solder was in contact with the module chassis causing an intermittent circuit '

ground which failed the "A" Main Feedwater Regulating Valve to the open position.

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NARRATIVE SUMhiARY OF MONTHLY OPERATING EXPERIENCE UNIT I AUGUST 1997 (Continued)

August 10 The Unit began startup preparations and entered Mode 2 at 0535 hours0.00619 days <br />0.149 hours <br />8.845899e-4 weeks <br />2.035675e-4 months <br />. The Reactor was taken critical at 0650 hours0.00752 days <br />0.181 hours <br />0.00107 weeks <br />2.47325e-4 months <br />. Mode I was entered at 1038 hours0.012 days <br />0.288 hours <br />0.00172 weeks <br />3.94959e-4 months <br />. The Main Unit Generator was synchronized to the electrical grid at 1749 hours0.0202 days <br />0.486 hours <br />0.00289 weeks <br />6.654945e-4 months <br /> and a return to full power was commenced.

August 11 A nominal output of 100% was achieved at 1214 hours0.0141 days <br />0.337 hours <br />0.00201 weeks <br />4.61927e-4 months <br />.

August 12 The Unit operating at a nominal value of 100% output for the remainder of the through report period.

l August 31 l

In addition to the above, the following events which also occurred during the report period are being reported as required by Technical Specifications.

August ! The Automatic Rod Position Deviation Monitor, although still functional, was not through considered operable per Technical Specifications. The limiting condition for August 31 operation as specified in the Technical Specifications was met because the deviations between the indicated rod positions were verified to be within their 12 step limits by obtaining analog / digital rod positions at least once every 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. In addition, Control Rod H-2 was also considered inoperable. The limiting condition for operation as specified in the Tecin ;al Specifications was met by reading the detector primary voltsge every four hours.

August 1 In addition to the above, Control Rod P-8 was declared inoperable at 1552 hours0.018 days <br />0.431 hours <br />0.00257 weeks <br />5.90536e-4 months <br /> when the Analog Rod Position Indication (ARPI) versus the group demand counter was determined to be reading greater than the Technical Specification limit of 12 steps. At 1610 hours0.0186 days <br />0.447 hours <br />0.00266 weeks <br />6.12605e-4 months <br />, the ARPI for Control Rod P-8 was returned to within 12 steps and declared operable.

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' AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50 334 UNIT BVPS Unit 1 DATE September 2,1997 COhfPLETED BY David T. Jones TELEPHONE (412) 393-4962 MONTH August 1997 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (hfWe Net) 1 649 17 806 2 805 18 810 3 805 _

19 811 4 805 20 811 _

5 816 21 812 6 818 22 818 7 692 23 815 8 0 24 816 1

9 0 25 812 4 10 27 26 810 11- 683 27 806 12 802 28 809 13 805 ,

29 813

14. 812 30 813 15 803 31 811 16 791 INSTRUCTIONS On this form, list the average daily unit power level MWe-Net for each day in the reporting month.

Compute to the nearest whole megawatt.

4 o

OPERATING DATA REPORT DOCKET NO : 50 334 REPORT DATE: 09/05/97 COMPLETED BY: DAVID T. JONES ,

TELEPHONE: (412) 393-4962 OPERATING STATUS

1. UNIT NAME: DEAVER VALLEY POWER STATION, UNIT 1
  • Notes *
2. REPORTING PERIOD: AUGUST 1997 * *
3. LICENSED THERMAL POWER (MWt): 2652 * *
4. NAMEPLATE RATING (Gross MWe) : 923 * *
5. DESIGN ELECTRICAL RATING (Net MWe): 835 * *
6. MAX. DEPENDABLE CAPACITY (Gross MWe): 860 *
  • 4 7 MAX. D2PENDABLE CAPACITY (Net MWe)- 810 ** * * * * * * * * * * * *
8. IF CHANGES OCCUR IN CAPACITY RATINGS SINCE LAST REPORT, GIVE REASONS:
9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (Net MWe): None
10. REASONS FOR RESTRICTIONS, IF ANY: N/A

{ THIS MONTH YEAR TO DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD: 744.0 5831.0 187031.0
12. NO. OF HRS. REACTOR WAS CRITICAL: 685.5 4361.2 125009.1
13. REACTOR RESERVE SHUTDOWN HOURS: 0.0 0.0 I482.8
14. HOURS GENERATOR WAS ON LINE: 674.5 4334.9 122821.5
15. UNIT RESERVE SHUTDOWN HOURS: 9.0 0.0 0.0
16. GROSS THERMAL ENERGY GEN. (MWH): 1752251.0 11312153.0 298585895.5 17 GROSS ELECT. ENERGY GEN. (MWH) : 568367.0 3732020.0 96599612.0
18. NET ELECTRICAL ENERGY GEN. (MWH): 532537.0 3496380.0 90357949.0
19. UNIT SERVICE FACTOR: (PERCENT) 90.7 74.3 67.4
20. UNIT AVAILABILITY FACTOR:(PERCENT) 90.7 74.3 67.4
21. UNIT CAPACITY FACTOR (MDC) : PCT 88.4 74.0 61.9
22. UNIT CAPACITY FACTOR (DER): PCT 85.7 71.8 60.0
23. UNIT FORCED OUTAGE RATE: (PERCENT) 9.3 25.7 15.4
24. SHUTDOWNS-SCHEDULED OVER NEXT SIX MONTHS (TYPE,DATE,AND DURATION OF EACH):

THE UNIT'S 12TH REFUELING OUTAGE IS SCHEDULED TO BEGIN ON SEPTEMBER 27, 1997 AND IAST FOR 4 5 DAYS .

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25. IF SHUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:

)

- 26. UNITS IN TEST STATUS - (PRIOR TO COMMERCIAL OPERATION) :

FORECAST ACHIEVED INITIAL CRITICALITY N/A N/A INITIAL ELECTRICITY N/A N/A COMMERCIAL OPERATION N/A N/A

UNIT SIILTTDOWNS AND POWER REDUCTIONS (22(F/.) Docket No. 50-334 ',

Unit Name BVPS Unit #I Date September 2,1997 Completed By David T. Jones REPORT MONTil Aucust 1997 Telephone (412)393-4 % 2 l

1 No. Date Typel Duration Reason 2 Method of ljcensee System Component Cause & Corrective Action to Prevent - l (Hours) Shutting Event Report # Codc4 Code 5 Recurrence

'Down

. Reactor 3 13 970807 'F 69.5 A 3 1-97-025 Cil INSTRU A reactor trip occurred following a turbine trip caused by a high steam generator Icvel in the "A" Steam Generator due to the associated "A" Main Feedwater Regulating Valve failing open. . The root cause of the reacsor trip was the existence of excess solder on one connection in a feedwater control module. The excess solder was in contact with the module chassis causing an intermittent circuit ground which failed the "A" Main Feedwater Regulating Valve to the open position.

The condition was corrected and the Unit was returned to service.

I 2 3 4 F-Forixd Reason: . Method Exluhat F-tnstructwns fw Prepararson of Dana Emry S-Scheduled A-Equipmeus Failure (Explain) 1-Manual Shems fw Immee Evema Repmt (11R) Fde B-Maineenance cr Test 2-Manual 3 cram (NUREG0161)

C Refueleng 3-Automatac Scram D-R4 - - yRewriction 44 ant'd from Previous Month E Operator Tranung A tioense Exam 5-Reduction 5 F-Adminsstrative 94 hr Exhdut II-Same Source G4h= rational Error (Explain)

II4Mher (Emplain)

D NARRATIVE

SUMMARY

OF MONTHLY OPERATING EXPERIENCE UNIT 2 AUGUST 1997 August i The Unit operated at a nominal value of 100% output.

through August 5 August 6 At 1308 hours0.0151 days <br />0.363 hours <br />0.00216 weeks <br />4.97694e-4 months <br /> with the Unit operating at a nominal value of 100% output, a 345KV system fault occurred in the switchyard of the Bruce Mansfield Power Plant tripping L the Mansfield #1 and #2 345KV lines to Beaver Valley. The grid disturbance also i

caused all three Bruce Mansfield Units to trip off-line. This resulted in a drop in the grid frequency which caused reactor power to increase approximately 1%. As a - i result, a power reduction to approximately 99% output was initiated at 1312 hours0.0152 days <br />0.364 hours <br />0.00217 weeks <br />4.99216e-4 months <br />. '

The Unit was subsequently returned to a nominal value of 100% output at 1628 hours0.0188 days <br />0.452 hours <br />0.00269 weeks <br />6.19454e-4 months <br />.

August 7 The Unit operated at a nominal value of 100% output.

through August 11 August 12 With unusually warm and humid atmospheric conditions present, incremental load reductions to approximately 99% output were commenced at 1643 hours0.019 days <br />0.456 hours <br />0.00272 weeks <br />6.251615e-4 months <br /> to stabilize -

Condenser Hotwell conditions due to the heat transfer capability of the Cooling Tower being slightly below design. Once conditions in the Condenser Hotwell had improved, the Unit was returned to a nominal value of 100% output at 2219 hours0.0257 days <br />0.616 hours <br />0.00367 weeks <br />8.443295e-4 months <br />.

August 13 The Unit o ated at a nominal value of 100% output.

through -

- August 14 August 15 - With unusually warm and humid atmospheric conditions present, incremental load reductions to approximately 95% output were commenced at 1551 hours0.018 days <br />0.431 hours <br />0.00256 weeks <br />5.901555e-4 months <br /> to stabilize i Condenser Hotwell conditions due to the heat transfer capability, of the Cooling Tower being slightly below design.

' August 16 With unusually warm and humid atmospheric conditions still present, additional

- incremental load reductions to approximately 90% output were made.

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NARRATIVE

SUMMARY

OF MONTHLY OPERATING EXPERIENCE UNIT 2 AUGUST 1997 (Q.ntinued)

August 17 Once conditions in the Condenser Hotwell had improved, the Unit was returned to a -

nominal value of 100% output at 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br />.

August 18 At 1214 hours0.0141 days <br />0.337 hours <br />0.00201 weeks <br />4.61927e-4 months <br />, a reduction to approximately 98% output was made to gain extra margin as a conservative measure in order to prevent a possible turbine runback during the calibration of Power Range Detector N42.

August 19 Following completion of the calibration of N42, power was restored to a nominal value of 100% output at 0410 hours0.00475 days <br />0.114 hours <br />6.779101e-4 weeks <br />1.56005e-4 months <br />.

August 20 - The Unit operated at a nominal value of 100% output. ,

through August 21 August 22 At 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br />, a reduction to approximately 98% output was made to gain extra margin as a conservative measure in order to prevent a possible turbine runback during the calibration of Loop II Delta T/Tavg. Following completion of the calibration, power was restored to a nominal value of 100% output at 1240 hours0.0144 days <br />0.344 hours <br />0.00205 weeks <br />4.7182e-4 months <br />.

August 23 The Unit operated at a nominal value of 100% output.

through August 27 August 28 At 1005 hours0.0116 days <br />0.279 hours <br />0.00166 weeks <br />3.824025e-4 months <br />, incremental load reductions to approximately 97% output were commenced to gain extra margin as a conservative measure in order to prevent a possible overpower event during the restoration of Main Unit Turbine (MUT)

- Governor Valve No. 4. Following satisfactory testing of all four.MUT _ Governor Valves, power was restored to a nominal value of 100% output at 1306 hours0.0151 days <br />0.363 hours <br />0.00216 weeks <br />4.96933e-4 months <br />.

August 29 The Unit operated at a nominal value of 100% output fo: the remainder of the report through period.

August 31

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-412 UNIT BVPS Unit 2 DATE September 2,1997 COMPLETED BY David T. Jones TELEPHONE (412)393-4962 MONTli August 1997 -

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 822 17 805 2 818 18 813 3 818 ,

19 819 4 817 20 817 5 829 21 820 6 830 22 828 7 830 23 827 8 823 24 829 9 819- 25 823 10 814 26 821 11 814- 27 817 12 813 28 816 13 812 ,

29 825 1 14 825 30 824 15 805 31 822 16 758 INSTRUCTIONS On this form, list the average daily unit power level MWe-Net for each day in the reporting month.

Compute to the nearest whole megawatt.

O

  • ~

.s .

OPERATING DATA REPORT DOCKET NO. 50-412 REPORT DATE: 09/05/97 COMPLETED BY: DAVID T. JONES TELEPHONE (412) 393-4962 OPERATING STATUS

1. UNIT NAME: BEAVER VALLEY POWER STATION, UNIT 2
  • Notes *
2. REPORTING PERIOD: AUGUST 1997 * *
3. LICENSED THERMAL POWER (MWt): 2652 * *
4. NAMEI' LATE RATING (Gross MWe): 923 * *
5. DES!GN ELECTRICAL RATING (Net MWe): 836 *
  • 6, MAX. DEPENDABLE CAPACITY (Gross MWe) : 870 * *
7. MAX. DEPENDABLE CAPACITY (Net MWe): 820 * * * * * * * * * * * * * *
8. IF CHANGES OCCUR IN CAPACITY RATINGS SINCE LAST REPORT, GIVE REASONS:
9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (Net MWe): None
10. REASONS FOR RESTRICTIONS, IF ANY: N/A f.

THIS MONTH YEAR TO DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD: 744.0 5831.0 85814.0
12. NO. OF HRS . REACTOR WAS CRITICAL: 744,0 5060,1 72781.1
13. REACTOR RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0
14. HOURS GENERATOR WAS ON LINE: 744.0 5022.3 72287.0
15. UNIT RESERVE SHUTDOWN HOURS: 0.0 0.0 0.0
16. GROSS THERMAL ENERGY GEN. (MWH): 1959439.0 12911328.0 180123171.0 17 GROSS ELECT. ENERGY GEN. (MWH) : 640978.0 4261487.0 58757910.0
18. NET ELECTRICAL ENERGY GEN. (MWH): 608491.0 4030097.0 55518693.0
19. UNIT SERVICE FACTOR: (PERCENT) 100.0 86.1 84.2
20. UNIT AVAILABILITY FACTOR:(PERCENT) 100.0 86.1 84.2
21. UNIT CAPACITY FACTOR (MDC) : PCT 99.7 84.3 78.6
22. UNIT CAPACITY FACTOR (DER) : PCT 97.8 82.7 77.4
23. UNIT FORCED OUTAGE RATE: (PERCENT) 0.0 13.9 5.1
24. SHUTDOWNS SCHEDULED OVER NEXT SIX MONTHS (TYPE,DATE,AND DURATION OF EACH):
25. IF SHUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:
26. UNIT IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION):

FORECAST ACHIEVED INITIAL CRITICALITY N/A N/A INITIAL ELECTRICITY N/A N/A COMMERCIAL OPERATION N/A N/A

.r -

UNIT SHUTDOWNS AND POWER REDUCTIONS (22(f4) Docket No. 50-412 ,

Unit Name BVPS Unit #2 Date - Scpeember 2,1997 Completed By ' Dasid T. Jones REPORT MONT11 Aueust 1997 TeltW (412)393-4%2 No. Date Typel Durataan Reason 2 Method of Licensee System Component Cause & Correctisc Action to Prevent (Hours) Shutting Frent Report # Code 4 Code 5 Penence

.. Down Reactor 3 1

NONE I 2 3 4 F-Forced Reason. Method: Exfutut F-Instrations for IWpermien e(Dusa Entry S-Scheshaled Ar, - Faihue(E9 min) 1 1-Manual Sheets for lxensee Ewre Reguet (LER) File B-Mainee anceerTest 2-Manual Saam (NUREG0161)

C-Renseling 3-Ausannahe Saam D.Regulasary Resencesan .

4fme'd freen Previous Meesh FA)peraserTraining A License Exam 5-Reebchen 5 F.Aenumstrative 94)ther Exiulut li-Same Source G4)perationni Errur (Emplain) 1I4)ther (Explain) 1

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