Text

Monthly Operating Rept for May 1984
	ML20092M033
Person / Time
Site:	Beaver Valley
Issue date:	05/31/1984
From:	Carey J, Holtz J; DUQUESNE LIGHT CO.
To:	; NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
	NUDOCS 8407020108
	Download: ML20092M033 (7)
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av NARRATIVE

SUMMARY

OF MONTHLY OPERATING EXPERIENCE - MAY, 1984

- May 1 The station was in operational mode 1 with reactor power a through-nominal 100%. The reactor. coolant system was at normal May 23 operating temperature and pressure.

May 24 With the station operating at 100% reactor power, a generator /

turbine / reactor-trip occurred at 0239 hours0.00277 days 0.0664 hours 3.95172e-4 weeks 9.09395e-5 months . The No. 1 diesel generator autostarted due to an apparent undervoltage on 4160V bus lAE and 480V bus 18N.

The plant was stabilized in mode 3 using appropriate emergency procedures.

.The cause of the trip was traced to a failed. transistor on the-time limiter module of the WTA voltage regulator. The transistor was. replaced and the station was taken critical at 1550 hours0.0179 days 0.431 hours 0.00256 weeks 5.89775e-4 months .

The main unit generator was synchronized to the grid at 1830 g

hours.

Escalation of reactor power was then begun. At 1854

hours, while attempting to switch steam generator feedwater control from the bypass to main.feedwater regulating valves, the

'C' main feedwater regulating valve would not respond to a demand signal.

The problem was found to be a broken valve

. stem.

Feedwater control was placed back in bypass and reactor power was being maintained at approximately 30%.

At 2214 hours0.0256 days 0.615 hours 0.00366 weeks 8.42427e-4 months , the generator experienced a 120MW load rejection due to problems with the electro-hydraulic control (EHC) system.

-The EHC system was placed in manual control.

May 25 The IB S/G feedwater control was switched to bypass to support

~the clearance on FCV-FW-488.

The EHC problems were traced to a faulty impulse pressure transmitter which was sending erratic input signals to the EHC when the system was in the " IMP IN" position. The onsite technical representative gave the okay to increase power with the EHC-in the " IMP OUT" position.

Escalation of reactor power was begun;at 1115 hours0.0129 days 0.31 hours 0.00184 weeks 4.242575e-4 months . A new impulse pressure transmitter was installed and found to be reading satisfactorily. Reactor-i power was increased to 100% at'2035 hours0.0236 days 0.565 hours 0.00336 weeks 7.743175e-4 months .

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- May'26' At 1440' hours, the station experienced a 20MW load rejection.

A second 20MW load rejection occurred at 1500 hours0.0174 days 0.417 hours 0.00248 weeks 5.7075e-4 months . The EHC system was placed in " IMP OUT."

The EHC impulse channel was found to be' drifting high. A strip chart recorder was installed

'to. record the input signals sent from the pressure transmitter to the EHC rystem.

May 27 The station was in operational mode I with reactor power a

- through nominal 100%. The reactor coolant system was at normal May 28 operating temperature and pressure.

May 29-The station was operating at a nominal 100% reactor power.

At 1040 hours0.012 days 0.289 hours 0.00172 weeks 3.9572e-4 months , the EHC was restored to " IMP IN" control. The problem in the impulse pressure transmitter was found to be a loose. electrical connection at the EHC cabinet.

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~ l May-l30L The station;was-in operational mode I with reactor power 1through-a nominal'100%. The reactor coolant system was at normal 1May 31?

-operating temperature and pressure.

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OPERATING DATA REPORT DOCKET NO. _50-334 DATE June 4, 1984 COMPLETED BY J.

L.

Holtz TELEPHONE. 417-641-1369 i

OPERATING STATUS i

!. Unit Name: Beaver Valley Power Station. Unit #1 l Notes i

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. 2. Reporting Period:

Mav 1984

3. Licensed Thermal Power (MWt):

No

4. Nameplate Rating (Gross MWe):

923

5. Design Electrical Rating (Net MWe):

835 j

6. Maximum Dependable Capacity (Gross MWe):

860

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7. Maximum De;,.ndable Capacity (Net MWe):

810

8. If Changes Occurin Capacity Ratings (Items Number 3 Through 7)Since Last Report. Give Reasons:

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9. Power Level To Which Restricted.If Any (Net MWe):

None-j

10. Reasons For Restrictions.If Any:

N/A I

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' This Month Yr to.Date Cumulative II. Hours in Reporting Period 744 3,647 70,871 e

12.~ Number Of Hours Reseter Wa's Critical 730.8 3,435.5 34',314.9 E

13. Reactor Reserve Shutdown Hours 4,482.8 I

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14. Hours Generator On-Line 728.'2 3,269.6 33,048.4

15. Unit Reserve Shuidown Hours. 16. Gross T'.ermal Energy Generated (MWH) 1.912.753 8.254.906.2 75,844,444.7

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17. Gross Electrical Energy Generated (MWH) 605.000 2,692,500 24,121,440 i:

_ 18. Net Electrical Energy Generated (MWH) 568,570 2,530,735 22,419,623

19. Unit Service Factor 97.9 89.7 48.9

20. Unit Availability Factor 97.9 89.7 48.9

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21. Unit Capacity Factor (Using MDC Net) 94.3 85.7 42.6

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22. Unit Capacity Factor (Using DER Net) 41 5 R 't 1

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23. Unit Forced Outage Rate 2.1 3.5 28.9

24. Shutdowns Scheduled Over Next 6 Months (Type. Date, and Duration of Eacht:

I Scheduled shutdown in October for 4th refueling.

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25. If Shut Down At End Of Report Period. Estimated Date of Startup:

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26.' Units in Test Status (Prior to Commercial Operation):

Forecast Achieved i

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INITIAL CRITICALITY N/A N/A I

N/A,

_ N/A f

INITIAL ELECTRICITY l

COMMERCIAL OPERATION N/A

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AVERAGE DAll UNIT POWER LEVEL i

DOCKET NO.

50-334 UNIT BV?S Unic ad DATE June 4, 194N COMPLETED BY J.

L. Holtz TELEPHONE (412) 643-12 i

Ii MONTH DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net g

825 g7 825 l

2 784 gg 784

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784 39 783 i

4 825 20 826

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7 784 23 826

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4 87

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9 826 23 455 10 784 26 784 i

11 783 27 784 l

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28 R '

i 13 826 784 39 l.

g4 783 783 30 13 825 f

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INSTRUCTIONS t

On this forrnat.!ist the average daily unit pi,wer le.e! :n MWe-Net f;;,r ese.' day in the reportine monin. Comnute to I

the ne: rest wnuie rnepwatt.

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L MAJOR MAINTENANCE - MAY, 1984 k

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. l '. Repaired broken--stem on main feedwater regulating valve, FCV-FW-498.

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- 2.-- Replaced transistor Q2 on the time-limiter module of WTA voltage regulator.

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4 UNITSIMITDOWNS ANDPOWER REIPUCTIONS DOCKET NO.

50-334 UNIT NAntE. BVPS Unit-#1 DATE. _ June 4, 1984 REPOR'T MONIH MAY

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.XXXXX At 0239 hours0.00277 days 0.0664 hours 3.95172e-4 weeks 9.09395e-5 months .on'the 24th, a generator /-

turbine / reactor trip occurred.

The-cause of the trip was a fa'iled trans-istor on the time limiter module of' the WTA voltage regulator. The trans-istor.was. replaced and the reactor was taken critical at 1550 hours0.0179 days 0.431 hours 0.00256 weeks 5.89775e-4 months on'the same day.

The main unit generator was synchronized to the grid at 1830 hours0.0212 days 0.508 hours 0.00303 weeks 6.96315e-4 months

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.s I: F.w ed Reasem:

3 picthed:

Exhibit G. Insseus elius a

S.5sl can'c l A fielmpment TailmeII.splain!-

g-Manuat I'on Peermasi.m of Data i

Il Maintessence ci Test 2-Manual scea.

I:ner) Slicess for Ikemec

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3-Aetonatic Scrae IIsent Repsul fl.I~RI I de (NI'HI G D Nepdatew) Pcstricti.m 4-Continued Fece Feevlogs Month illell' l thereasoe T a6 ding A ficnse lhaminasiain 5-Redwetion I - Adnunistrative G Ogwratismal I.ses It'aplaint i-9-Other INhdoit I.Same,S nnce r8/771

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'Af Telephone (412) 393-6000 Nuclear Div6sion p O. Box 4 Shippingport, PA 15077-0004 June 4, 1984 Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Monthly Operating Report United States Nuclear Regulatory Commission Director, Office of Management Information & Program Control Washington, D.C.

20555 Gentlemen:

In accordance with Appendix A, Technical Specifications, the Monthly Operating Report is submitted for the n;7 nth of May,1984.

Very truly yours, lgf0

. J. Carey Vice President Nuclear Group Enclosures cca NRC Regional Office, King of Prussia, PA e

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ML20092M033

Text

SUMMARY

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