ML20210Q614

Monthly Operating Rept for Feb 1986

ML20210Q614
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	02/28/1986
From:	Orser W, Ulmer F PORTLAND GENERAL ELECTRIC CO.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
WSO-080-86, WSO-80-86, NUDOCS 8605140149
Download: ML20210Q614 (5)

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OPERATING DATA REPORT I

DOCKET NO. 50-144 DATE 1-6-R6 COMPLETED BY F. J. Ulmer TELEPHONE 907-996-1713 Ext. 495 OPERATING STATUS Notes

1. Unit Name: Troian Nucions- Plant February 1986

. 2. Reporting Period:

3411

3. Licensed Thermal Power (MWt): 1216

4. Nameplate Rating (Gross MWe):

1130

5. Design Electrical Rating (Net MWe): 1100

6. Maximum Dependable Capacity (Gross MWe):

1050

7. Maximum Dependable Capacity (Net MWe):

8. If Changes Cecur in Capacity Ratings (Irems Number 3 Through 7) Since Last Report. Give Reasons:

n/a

9. Power Level To Which Restricted,If Any Net MWe): n/a

10. Reasons For Restrictions.If Any: ,

This Month Yr to.Date Cumulative 677 1416 83.232

11. Hours In Reporting Period 658.4 1402.6 50,952

12. Number Of Hours Reactor Was Critical O n 3.887

13. Reactor Reserve Shutdown Hours 656.6 1400.6 50,455

14. Hours Generator On.Line 0 0 3.249

15. Unit Reserve Shutdown Hours 4,712,197 159,667,002 2,178,213

16. Gross Thermal Energy Generated (MWH) 698,938 1,513,228 52,331,544

17. Gross Electrical Energy Generated (MWH) _

49,533,620 665,609 1,442,316

18. Net Electrical Energy Generated (MWH) 97.7 98.9 60.6

19. Unit Service Factor 64.5 97.7 98.9

20. Unit Availabilit" Factor 55.1 94.3 97.0

21. Unit Capacity Factor (Using MDC Net) 87.7 90.1 52.7

22. Unit Capacity Factor (Using DER Net) 2.3 1.I 15,3 23.' Unit Forced Outage Rate

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

Cycle 8/9 Refueling Outage is scheduled for April 24, 1986.

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

26. Units In Test Status (Prior to Commercial Operation): Forecast Achieved nla n /n INITIAL CRITICALITY INITIAL ELECTRICITY n/a n /a n/a n/a COMMERCIAL OPERATION 8605140149 360228 MM (9/77) ,

PDR ADOCK 05000344 l I R PDR l

AVERAGE DAILY UNIT POWER LEVEL DOCKET N0: 50-344 UNIT: Trojan 3-4-86 DATE:

COMPLETED BY: F. J. Ulmer TELEPHONE: 503-556-3713 Ext. 495 MONTH FEBRUARY 1986 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY FOWER LEVEL (MWe-Net) (MWe-Net) 1 1044 17 1052 2 1044 18 1052 3 1045 19 1049 4 1046 20 1047 5 1050 21 1046 6 1052 22 1050 7 1050 23 1044 8 183 24 1041 9 358 25 1044 10 1009 26 1044 11 1047 27 1044 12 28 1044 1049 13 loso 29 n/a 14 1049 30 n/a 15 1050 31 n/a 16 1051 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77)

50-344 UNIT SilU1 DOWNS AND POWER REDUCTIONS DOCKET NO.

UNIT NAME Trninn DATE 3-3-86 COMPLETED BY F_ 3_ in mor REl' ORT MONill FEBRUARY l986 TELEPIlONE 503-556-3713 Ext. 495 1

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%. DJte g

jE } hY Licensee Event Eg g7 k

hi Cause A Csurective Action so 3@ ;I

.E s a:

H f5 E j g?, g Report sr mO yV . Prevent Recurrence 6

86-01 2-8-86 F 15.4 G 3 86-001 BA 20 Reactor Trip caused by high negative rate trip being set so conservative that the manual turbine runback due to

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loss of a circulat?ng water pump on low oil flow caused the setpoint to be exceeded. The trip was investigated, cause determined, and negative rate setpoints adjusted per Westinghouse /

Trojan evaluation. The circulating pump lube oil system was reviewed, evaluated, and procedures were changed to insure proper system operation during cold weather conditions.

t I 2 3 4 F: Forced Reason: Method: Exhibit G Instructions S: Scheduled A Equipment Failure (Explain) I-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scrern. Entry Sheets for Lkensee C Refueling 3. Automatic Sc;sm. Event Report ILER)Fil INUREG-D Reguistory Restriction 4 Other(Explain) 0161)

E Operstor Training & IJeense Examination

, F-Adndnistrative 5 G. Operational Erros tExplain) ,

Exhibit i- Same Source (9/77) II.Other IExplaini

e TROJAN NUCLEAR PLANT DOCKET NO: 50-344 DATE: 3/3/86

SUMMARY

OF OPERATING EXPERIENCE COMPLETED BY: F. J. Ulmer TELEPHONE: 503-556-3713 Ext. 495 OPERATIONS:

The plant entered the month at full power.

On February 8, 1986 at 0313, a reactor trip occurred from hi5h negative power range neutron flux rate during a manual turbine runback. The turbine was being manually runback in response to an "A" circulating water pump trip at 0312.

The cause of the circulating water pump trip was determined to be due to low l lube oil flow. The low lube oil flow resulted from the lube oil temperature

! dropping to 75'F in the cold weather. Following the trip, the cooling water valves to the lube oil coolers were found one turn open accounting for the low lube oil temperatures.

Despite the trip of the circulating water pump, a reactor trip should not have

occurred. The occurrence of a high negative power range neutron flux rate trip during a normal turbine runback was considered to be abnormal. The negative and positive rate trips had been reset during the 1985 refueling outage in response to Westinghouse Technical Bulletin NSID-TB-85-13. The Technical Bulletin corrected 1

a misinterpretation of the Technical Manual and revealed -the trip setpoints had i previously been set above the allowable Technical Specification values prompting the submittal of Licensee Event Report 85-07. The reduction of the setpoint

] to 4.5% power with a time constant of 2.5 seconds resulted in the trip rate being j set at a rate which could be expected during a normal runback (especially toward

! end of life when the moderator temperature coefficient is high). Following discus-l sions with Westinghouse, the negative rate trip was changed to 5% power with I a 2.25 second time constant (Plant Sctpoint Change 86-004).

On February 8, 1986, at 1652, the reactor was taken critical and at 1835 the j turbine generator was synchronized to the grid. The plant reached full power '

at 0355, February 10, 1986 and remained at full power throughout the rest of j

the month.  ;

! The "C" steam generator primary-to-secondary tube leakage increased from approxi-mately 200 gallons / day to 300 gallons / day while reactor coolant system activity remained constant at approximately 15% of the Dose Equivalent Iodine Limit.

MAJOR SAFETY RELATED MAINTENANCE:

o A Train ESF outage occurred for monthly preventative maintenance o B Train ESF outage occurred for monthly preventative maintenance o C Service water pump overhaul including impeller replacement o CB-1, Control Room Emergency Ventilation repairs o ESF room coolers preventive maintenance and repairs MISCELLANEOUS MAINTENANCE:

o Fuel Building Crain repairs and preventative maintenance o Spent Fuel Pool Grane repairs and preventative maintenance o B Waste Gas Compressor repairs l

Summary of Operating Experience Page'2 LICENSE CHANGES: Amendment No. 109 The amendment revises the Technical Specifications definitions of Operational Mode (Section 1.4) and Operable-Operability _ (Section 1.6) to reduce ambiguity in the definitions of the words " Mode" and " Operable".

MISCELLANEOUS:

The onsite NRC review of the control room emergency ventilation system continues and the system is undergoing evaluation and upgrade.

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Portland General Electric Company Trojan Nuclear Plant P.O. Box 439 Rainier, Oregon 97048 (503)556-3713 March 6, 1986 WSO-080-86 Office of Resource Management US Nuclear Regulatory Commission Washington, DC 20555 Gentlemen:

In accordance with the Trojan Nuclear Plant Technical Specifications reporting requirements, the monthly operating data report is submitted for February, 1986.

Sincere ,

i W. S. Orser General Manager Attachments

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