ML20134B497

Monthly Operating Repts for Jul 1985

ML20134B497
Person / Time
Site:	Point Beach
Issue date:	07/31/1985
From:	Fay C, Krause C WISCONSIN ELECTRIC POWER CO.
To:	NRC
References
CON-NRC-85-87 VPNPD-85-259, NUDOCS 8508150647
Download: ML20134B497 (10)

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T DOCKET NO.

50-266 UNIT MAME Point Beach, Unit 1 DATE August 7, 1985 COMPLETED BY C.

W.

Krause TELEPHONg 414/277-2001 AVERAGE Dh1LY Uti1T POWER LEVEL MONTE July, 1985 AVERAGE

. AVERAGE AVERAGE DAILY DAILY DAILY PONER LEVEL POWER LEVEL PONER LEVEL DAY NWe NET DAY 9ede NET DAY 990e NET 1

474 11 451 21 463 2

497 12 494 22 498 3

498 13 497 23 466 4

498 14 498 24 501 5

497 15 495 25 424 6

498 16 481 26 495

• 460 27 497 7

494 17 8

'497 18 485 28 501 9

497 19 502 29 501 18 485 20 502 30 500 i

31 499 i

non-2sa (01-79)

A UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET HO.

50-266 UNIT NAME Point Beach, Unit 1 REPORT MONTH July, 1985 COMPLETED C

Krau TELEPHONE 414/277-2001 1

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No.

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- Cause and Corrective Action

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Report No.

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F: Forced Reason:

Method:

Exhibit G-Instruc-4 S: Scheduled A-Equipment Failure (explain)

L-Manual tions for Prepar-i B-Maintenance or Test 2-Manual Scram'

- ation of, Data Entry

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C-Refueling 3-Automatic Scram Sheets.for LER File l

D-Regulatory Restriction 4-Other (explain)

(NURgG-0161)

E-Operator Training & License Exam F-Administrative 5

AD-2SB Exhibit I-Same i

G-Operational Error (explain)

Source (01-78)

H-Other (explain) 4

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t NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE

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Docket No.

50-266 Unit Name Point Beach, Unit 1 Date August 7, 1985 Completed By C. W. Krause Telephone 414/277-2001 i

Unit 1 operated at approximately 497 MWe net throughout the period.

On July 3, 1985, the unit experienced a 64 turbine run-back caused by a momentary loss of power to the N42 rod drop bypass relay when transferring power to the 1Y03 bus from inverter 1DY03.

Final repairs had been completed to the inverter following the June 26, 1985, runback and trip and the inverter was being placed back in service to power bus 1YO3 when the'64 runback occurred.

The runback cleared as instrument power was restored and the unit was returned to full power.

At 0604 hours0.00699 days <br />0.168 hours <br />9.986772e-4 weeks <br />2.29822e-4 months <br /> on July 25,1985, a 200 turbine runback was initiated from an RPI rod bottom bistable, caused from a momentary loss of power to the 1A05, IB03,1B32, and 1Y06 power supply to the rod position indication system.

The cause of this momentary power failure was a lockout of 1X04 low voltage station transformer resulting from actuation of its sudden pressure trip device.

The lockout of 1X04 resulted in a loss of power to 1A03 and 1A04 4.16 KV buses.

The 1A05/1A06 safeguards buses and loads were immedistely picked up by the emergency diesel generators.

At 0620 hours0.00718 days <br />0.172 hours <br />0.00103 weeks <br />2.3591e-4 months <br />, an Unusual Event emergency classification was declared, and at 0629 hours0.00728 days <br />0.175 hours <br />0.00104 weeks <br />2.393345e-4 months <br />, an orderly shutdown of Unit I was commenced to comply with Plant Technical Specifications.

At 0649 hours0.00751 days <br />0.18 hours <br />0.00107 weeks <br />2.469445e-4 months <br />, operating personnel reenergized 1A03/1A04 from 1A01/1A02, and left 1A05 and 1A06 supplied by emergency diesels G01 and G02, respectively.

A gas test of the 1X04 transformer cover gas confirmed that a transformer fault had not occurred.

An inspec-tion of the transformer also revekled that its pressure relief device had not actuated.

Moisture was found in the sudden pressure relay reset switch, as well as several loose relay connections and water in general areas of the relay cabinet.

The moisture and water were removed and the connections were tightened.

The source of the water was believed to have been caused by heavy rains experienced on July 25, 1985.

Based on the inspection results, the plant staff concluded that 1X04 could be reenergized.

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This was completed at 0845 hours0.00978 days <br />0.235 hours <br />0.0014 weeks <br />3.215225e-4 months <br />.

At 0857 hours0.00992 days <br />0.238 hours <br />0.00142 weeks <br />3.260885e-4 months <br />, power from IXO4 was supplied to the 1A03 and 1A04 buses, operating personnel began returning the unit to full power at 0858 hours0.00993 days <br />0.238 hours <br />0.00142 weeks <br />3.26469e-4 months <br /> and at 0910 hours0.0105 days <br />0.253 hours <br />0.0015 weeks <br />3.46255e-4 months <br /> the Unusual Event emergency condition was terminated.

At 0917 hours0.0106 days <br />0.255 hours <br />0.00152 weeks <br />3.489185e-4 months <br />, the normal supply breakers to 1A05/1A06 were closed and the emergency diesel generators were secured.

The NRC Resident Inspector was present in the control room during most of the

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event and was notified of changing conditions and plant status.

Licensee Event Report No. 85-004-00 was written as a result of the event.

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2-2 July 29, 1985.

On February 7, 1984, 3 fuel assemblies were

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A Technical Specification violation was identified on placed against the spent fuel pool perimeter before they had i

been suberitical for more than a year.

The assemblies have now been subcritical for more than one year.

Possible effects on the integrity of the spent fuel pool wall are being evaluated.

Procedural changes will be made which will enhance the adminis-trative controls over spent fuel assemblies placed near the spent fuel pool wall and preclude this situation from recurring in the future.

Licensee Event Report No. 85-005-00 was written as a result of this occurrance.

On July 12, 1985, there was an accidental weapon discharge by a security guard at the PAB guard station.

No personnel injury or equipment damage was involved.

The incident has been investigated by plant and NRC personnel.

Maintenance performed during the period included repairs to inverter 1DY03 and rebuilding of the spara RHR pump rotating assembly.

Presently, efforts are underway to install the auxiliary building crane.

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1 GPtAATING M1A REPORT BSCKET 30. 50-301 l

l BATE August 7, 1985 CONPLEIED DT C. U. RRADEE 1ELEPH0K 4I4 277 200i BPERATING STATUS

1. WNIT NARE: PSINT M ACu NUCLEAR PLANT INIIT 2

. NOTES

2. REPORTING PERIOS:

JIILT 1985

3. LICENSE 3 THERSAL POWER th5T)r 1580.

4. #ANEPLATE RATilIS (ORSSE IIEE):

523.8

5. BESIGN ELECTRICAL RATING ( KT NUE): 497.

I.

6. NAXINUN KPENSASLE CAPACITT (0R055 Rile): 547.

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7. N4XIMult KPERSABLE CAPACliT (KI HK): 485.

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S. IF CHANSES OCCUR IN CAPACITI RAIINGS (IIERS NulIER 3 THROUGH 7) SINCE LASI IIEPORT, GIVE REASeIIS:

IIST APPLICABLE j

t. PSUER LEVEL TO MICN RESTRICTED, IF ART (MT NUE): NOT APPLICABLE j

ID. REASONS FOR RESIRICTIBill, (IF AftY3: 50T APPLICABLE INIS ADNTE TR TO DATE CUNULATI9E i

11. IISURS IN REPORTIN PERIOS 744 5,007 113,952 l

12. HURBER OF H8INtS REAC10R NA5 CRITICAL 744.9 5,067.0 101,059.4 j

13. REACTOR RESERVE SNGTSOUll H8UltS 4.0 4.0 297.1

14. II0uel SElIERATOR ell LINE 744.4 5,087.0 99,396.4

15. BNIT-RESERVE.SHUISSUR NOBRE G.4 4.0 t98.1

-14. 51tt55 1HERAAL ENERST SENERATES (NiiN) t,194,922 e 7,640,440 139,393,032

17. GR8SS ELECTRICAL ENERST SENERATES (Nge) 375,770 2,602,496 47,242,834

10. E T ELECTRICAL ENERSI SEAERATED (ItillD 358,744 2,408,842 45,449,247

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17. SIIIT SERVICE FAC10R 104.4 100.0 87.2

26. 811IT AWAILABILITT FAC19R 100.0 100.4 57.4

21. Of1IT CAPACITT FACTOR (851118 NBC NET 3*

ff.4 100.9 09.4

22. Efl1T CAPACITT FACTBR (USINE MR NET) 97.4 98.4 71.5

23. Billi FORCED BUTAGE RAIE G.0 4.0 1.3 i

24. SNeitetNIS SCKBilLEB SVER KIT & IIONIBS (TTPE, BeiE, ANS SURATION OF EACH3: moreeling outage -r h-ne da a for seg*==h=e 18, 1985.

25. IF S5U13005 AT END DF REPSRI PERISB, ESTINATES DATE OF STAltiUP: 50f SNUT8054 l

j strA aEPORTED AN9 FACTORS EALCULATED AS REQUES1ED IN NRC LETIER SAIEB SEPTEM KR 22, 1977

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t DOCKET NO.

50-301 UNIT MANE Point Beach Unit 2 DATE August 7, 1985

)

COMPLETED BY C. N.

Krause TELEPHONE 414/277-2001 AVERAGE DAILY UNIT POWER LEVEL MONTH JULY, 1985 AVERAGE AVERAGE AVERAGE DAILY DAILY DAILY POtetR LEVEL PONER LEVEL POWER LEVEL DAY PGfe NET DAY Dale NET DAY PWfe NET 1

461 11 491 21 4 94 2

463 12 491 22 491 466 13 493 23 492 3

421 14 493 24 494 4

465 15 489 25 494 5

6 16 487 26 494 461 1

7 37 487 27 494 428 481 3

ig 491 28 469 3

19 494 29 493 494 492 494 30 493 10 20 31 492 j

I EQR-28a sen 70s

UNIT SRUTDOWNS AND PONER REDUCTIONS DOCKET NO. 50-301 UNIT NAME Point Beach UTit 2 DATE August /, una REPORT MONTH JULY, 1985 COMPLETED BY C.

W.

Krause TELEPHONE 414/277-2001

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'F: Forced Reason:

3 Method Exhibit G-Ins.rac-S: -Scheduled A-Equipment Failure (explain) 1-Manual tions for Preaar-B-Maintenance or Test 2-Manual Scram ation of Data Entry C-Refueling 3-Automatic Scram Sheets for IJR F13e D-negulatory mestriction 4-Other (explain)

(NUREG-0161)

E-Operator Training s. License Exam F-Administrative 5 Exhibit I-Same i

AD-28B G-Operational Error (explain)

Source i

(01-78)

H-Other (explain)

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NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE Ducket No.

50-301 Unit Name Point Beach, Unit 2 Date August 7, 1985 Completed By C. W. Krause Telephone 414/277-2001 Unit 2 uperated at approximately 495 MWe not throughout the period.

At the end of the last period (June 30, 1985),

water hammer was noted in the unit's steam generator auxiliary i

feedwater piping when the steam driven auxiliary feed pump was secured during periodig testing of the auxiliary feedwater system.

On July 2, 1985, Maintenance personnel walked down the auxiliary feedwater piping system to check for damage.

One questionable area was noted.

It appeared that the auxiliary feedwater piping near one restraint may have been displaced.

Measurements have been taken and an evaluation of the significance of this possible movement is being performed.

A significant operating Event Report will be written upon completion of investigations and evaluation.

on July 4, 1985, load was reduced to 267 MWe not for approximately 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> to accommodate condenser tube leak checks.

Cation conductivity and sulfate levels appeared to have been increasing, indicating possible condenser tube leaks, but no leaks were found.

Maintenanca during the period included replacing the "A" charging pump vari-drive unit, repairing the "C" charging pump seals, and repair of a secondary side steam leak on the "A"

steam generator west manway cover.

I

Wisconsin Elecinc mm coumr 231 W. MICHIGAN, P.O. BOX 2046 MILWAUKEE, WI 53201 August 9, 1985 VPNPD-85-259 NRC-85-87 Director of Nuclear Regulatory Operations U.

S.

NUCLEAR REGULATORY COMMISSION Washington, D.

C.

20555 Gentlemen:

MONTHLY OPERATING REPORTS POINT BEACH NUCLEAR PLANT Attached are monthly operating reports for Units 1 and 2, Point Beach Nuclear Plant, for the calendar month of August 1985.

Very truly yours,

((

Vice President-Nuclear Power C. W.

Fay Attachments Copies to J. G.

Keppler - NRC, Region III NRC Resident Inspector R.

S.

Cullen - PSCW

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