ML19347E687

Monthly Operating Rept for Apr 1981

ML19347E687
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	05/01/1981
From:	Bair G PORTLAND GENERAL ELECTRIC CO.
To:
Shared Package
ML19347E684	List: ML19347E683 ML19347E687
References
NUDOCS 8105130225
Download: ML19347E687 (1)

Text

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h OPERATING DATA REPORT DOCKET NO. 50-344

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DATE 5/1/81 COMPLETED BY

0. C. Bair TELEPHONE sna / s s A-1713 Ext. 234 OPERATING STATUS Notes Trojan Nuclear Plant

1. Unit Name:

Anril 1981

2. Reporting Period:

3411

3. C-=1 Thennal Power (MWt):

1216

4. Nameplate Rating (Grost MWe):

1130

5. Design Electrical Rating (Net MWe):

1122

6. Maximum Dependable Capacity (Gross MWe):

1080

7. Maximum Dependable Capacity (Net MWe):

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

' 9. Power LevelTo Which Restricted If Any (Net MWe):

10. Reasons For Restrictions.If Any:

' This Month Yr.-to.Date Cumulative 719 2879 40871

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11. Jours in Reporting Period-716.8 2566.2 25327.5

12. Number Of Hours Reactor Was Critical 0

0 2171.8

13. Reactor Resene Shutdown Hours 711.7 2551.2 24544.7

. 14. Hours Generator On-Line 0

0 is08.7

15. Unit Reserve Shutdown Hours 2324729 8365324 76932006

16. Gross Thermal Energy Generated (MWH) 760670 2745495 25120881

17. Gross Electrical Energy Genersted (MWH) 724518 2611418 23718177

18. Net Electrical Energy Generated (MWH) 99.0 88.6 60.1

19. Unit Senice Factor 99.0 88.6 63.7

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20. Unit Availability Factor 93.3 84.0 53.8

21. Ur.it Capacity Factor (Using MDC Net) 89.2 80.3 91.4

• 22. Unit Capacity Factor.(Using DER Net) 1.0 0.7 23.7 l

24. Shutdowns Scheduled Over Next 6 Months (Type. Date, and Duratiori of Eschi:

23. Unit Forced Outsge Rate l

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Refueling, May 1, 1981, 65 days l

Juiv 1. 1981

25. If Shut Down At End Of Repcrt Period. Estimated Date of Seartup:

Fr3.w Achieved -

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

NA NA INITIAL CRITICALITY NA NA INITIAL ELECTRICITY NA NA COMMERCIAL OPER ATION

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• 9 U*siseggg

1-AVERAGE DAILY UNIT POWER LEVEL i

DOCKET NO.

50-344 UNIT Troian 5/1/81 DATE COMPLATED llY G. G. Bair TELEPHONE 503/556-3713

, Ext. 234 April 1981 MONTH Dfr AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1023 g

1075 g7 2

1073 3g 1010 1003 3

1073 g9 456 4

1072 20 413 5

1072 21

'866 6

1073 22 1073 1005 7

y 8

in76 24 1042 9

1078 25 1061 1001 10 1077 26 in7o 27 1040 12 1078 28 1056 1078 1050 13 29 1048 14 1058 30 1050 NA gg

)g 16 1937

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INSTRUCTIONS On this format. list the aversgc daily unit powcr levelin MWe. Net for each dsy in the reporting month. Compute to the nearest whole rnegswatt.

(9/77) i j

i s-J

I l

8 DOCKET NO. 50-344 7

UNIT SHUTDOWNS AND POWER REDUCTIENS.

UNIT NAME Troian DATE 5/1/81 COMPLETED BY C-C-

R rd r REPORT MONTil April 1981~ '

TELEPilONE 503/556-3713 Ext 234 I

l u

o g

Licensee Eg vt Cause & Currective

.$ E

'h. j.y Action to g}

- Prevent Recurrence No.

h*

k jR

,ye Event M,7 g

g o8 d

jigg

. Report #

U H

.6

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81-03 810420 F

7.3 G

3 EB CKTBRK A workman accidentally shorted across the service water booster pump motor breaker on 480v ESF bus B25 while trouble shooting a problem with the breaker..The short opened the supply breaker to B25 and caused a parttal loss of instrumentation power.Th'is caused the feddwat'er control yalves to fail as is and the condensate recir-culation valves CV-2972A, B to fail open causing about 9000 gpm condensare to be returned to the condenser. One feedwater pump tripped on low FW pump I

suction pressure.

Steam generator C I

low-low level trip. result;ed. The lost buses and loads were returned via alternate electrical alignment. The breaker will be repaired and later j

returned to service.

I 2

3 4-F: Forced Reason:

Method:

Exhibit G-Instructions S: Scheduled A Equipment Failure (Explain) 1-Manual for Preparation of Data D Maintenance or Test 2 Manual Scram.

Entry Sheets for Licensee C Refueling 3 Automatic Scam.

Event Reporn (LER) File (NUREG-D Regulatory Resitiction 4-01her (Explain) 0161)

E-Operator Training & License Examination, F-Admini:trative G Operallonal Error (Explain)

Exhibit I Same Source (9/77) 1101her (Explalu) i I 8

• ' I

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l l

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SUMMARY

OF OPJtATING EXPERIENCE DOCKET R@:

@@-366

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'DATE: 5/1/81 COMPLETED BY:

G. G. Bnir TELEPHONE:

503-556-3713 Ext. 234 OPERATION:

The plant began the month at full power and started a slow coastdown of 2% /

day on 4/13/81. On 4/20/81, a reactor trip occurred due to low steam generator level resulting from a short on a 480v electrical breaker. The unit was back on line the same day. Power escalation holds occurred due to chemistry of steam generator and core flux penalty time before reaching full power.

The steam geneator tube leak rate began the month at 20 gpd and increased to approximately 140 gpd at the end of the month. Most leakage is from steam generator C with no leakage from steam generators A or D which had first row tubes plugged.

Steam generators B and C are scheduled to have first row tubes plugged in May outage. Preparations for the May/ June Refueling outage continue through the month for the 5/1/81 shutdown.

MAJOR SAFETY RELATED MAINTYNANCE:

Work continued on improvement modifications to the Plant Security and Fire Protection System.

Work continued on modificacions to the Control and Auxiliary Building walls to improve their seismic integrity.

Work continued on TMI-related modification work.

Work began on mechanical snubber inspection, testing, and repair as per IEB-81-01.

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MISCELLANEOUS MAINT7.'.iANCE:

Sensor response time testing was coaducted during the month, Testing of motor operated valves and electrical breakers continued through the month.

p Containment tendon surveillance program continued through the month.

Boron injection recirculation pump testing was completed.

Completed containment electrical penetration LLRT.

LICENSE CHANGES:

Amendment 57: Established a standard Technical Specification in Section 3.8.3 intended to protect against degraded voltage condition.

Order of 4/20/81:

Establishes a standard Technical Specification on Section 3.4.6.2 to call for backleakage testing on ECCS event V check valves.

MISCELLANEOUS:

Construction resumed on the Technical Support Center.

Mt. St. Helens underwent a minor eruption on 4/10/81; no impact occurred at Trojan.

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