ML20155D210

Monthly Operating Rept for May 1988 for Trojan Nuclear Plant

ML20155D210
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	05/31/1988
From:	Olmstead C, Ulmer F PORTLAND GENERAL ELECTRIC CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CAO-229-88, NUDOCS 8806140572
Download: ML20155D210 (6)

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TROJAN NUCLEAR PLANT Summary of Operating Experience May 1988 The plant entered the month in Mode 6 with unloading of fuel from the reactor vessel in progress. Fuel unloading was completed May 1. An inspection of the reactor internals and reactor vessel for stray fuel pellets was performed. No pellets were found.

Reload of fuel into the core was begun on May 7 and completed on May 13. The reactor vessel head was set in place on May 16 and tenaiened on May 22 to place the plant in Mode 5.

Installation work to install a new remote shutdown panel has been completed. All panels associated with the remote shutdown station have been energized. Final checkout and acceptance testing is in progress.

A new Control Room chiller system has been installed. System functional testing is in progress.

Steam generator eddy current testing was completed on the 'A' and

'D' steam generators. Three tubes were plugged in the 'A' steam generator and 11 tubes were plugged in the 'D' steam generator.

Additionally, the plug in a previously plugged tube in steam generator 'D' was found to be leaking. Preparations .sre being made to repair this leaking plug.

Damage to containment electrical cables was discovered in the vicinity of the reactor coolant pumps. The damaged cables were exposed to hot air from the reactor coolant pump motor exhaust.

The worst areas are near the 'C' and 'D' pumps where several cable trays are located. The high temperatures caused the outer layer of insulation to become brittle. Corrective action is under evaluation.

During inspection of the pressurizer surge line, the surge line piping was found to be in contact with a pipe whip restraint.

This indicates a possible abnormal stress has caused the pipe to move, since the pipe should not be touching the restraint.

Evaluation of this finding led to performance of non-destructive examination of surge line piping welds. Indications were found in welds on the surge line elbow just downstream of the pressurizer.

Indications were detected using ultrasonics, but were not seen on radiographs. Additional ultrasonic measurements will be taken using different techniques and probes to obtain more information to help determine if a repair will be required. An independent inspection group will also be retained to perform an independent measurement and evaluation, d

3gd' UM289gggggg . clear Plant Notes

1. Unit Nome:

May 1988

. 2. Reporting Period:

3411

3. Licensed Thermal Power (MWt):

4. Nameplate Rating (Gross MWe):

1216 1130

5. Design Electrical Rating (Net MWe):

6. Maximum Dependable Capacity (Gross MWe):

1153 1095

7. Maximum Dependable Capacity (Net MWe):

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

NA 1

NA

9. Power Level To Which Restricted,1f Any (Net MWe):

10. Reasons For Restrictions,if Any: NA This Month YrAo Dete Cumulative 744 3647 102983

11. Hours in Reporting Period O 2344.6 63698.8

12. Number Of Hours Reactor Was Criticag 0 0 3887

13. Reactor Reserve Shutdown Hours 0 2342.2 63013.9

14. Hours Generator On Lhw __

0 0 3249

15. Unit Reserve Shutdown Hours 0 7955428 199806264

16. Gross Thermal Energy Generated (MWH)

17. Gross Electrical Energy Genersted (MWH) 0 ,- 2692463 ,,fj,15 5 8101

-2419 2565938 62095245

18. Net Electrical Energy Generated (MW'l) n 6a_9 61.2

19. Unit Service Factor 0 64.2 64.3

20. Unit Avsilability Factor

-0.3 64.3 56.5

21. Unit Capacity Factor (Using MDC Net)'

-0.3 62.3 53.4

22. Unit Capacity Factor (Using DER Net) 0 5.2 13.7

23. Unit Forced Outage Rate

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

Refuelina/ Maintenance in Proaress

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

mid-June 1988

26. Units in Test Ststus (Prior to Commercial Operatioc): Forecsat Achieved NA NA INITIA L CRITICALITY NA NA INITI A L ELECTRICITY NA NA COMMERCI AL OPER ATION (o/77) f

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, g e NO Portland General Electric Company Trojan Nuclear Plant June 6, 1988 71760 Columbia River liwy CAO-229-88 Rainier, Oregon 97048 (503) 556-3713 US Nuclear Regulatory Commission l Document Control Desk Washington, DC 20555 Gentlemen:

Monthly Operating Report In accordance with the Trojan Nuclear Plant Technical 3pecifications reporting requirements, the Monthly Operating Data Report is submitted for May 1988.

Sincerely, C. A. Olmstead General Manager Attachment c: Mr. John B. Martin Regional Administrator, Region V US Nuclear Regulatory Commission Mr. William Dixon Department of Energy ,

State of Oregon Resident Inspector 1

MOR Distribution I

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