ML20154D144

Monthly Operating Rept for Aug 1988 for Trojan Nuclear Plant

ML20154D144
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	08/31/1988
From:	Bair G, Olmstead C PORTLAND GENERAL ELECTRIC CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CAO-300-88, NUDOCS 8809150166
Download: ML20154D144 (5)

Text

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l TEOJAN NUCLEAR PLANT

SUMMARY

.F OPERATING EXPERIENCF August 1988 i The plant entered the month in Mode 1 at 100% power.

On August 12 at 0005 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />, power was reduced to 90% for turbine-  !

valve testing. Power was restored to 100% at 0210. On August 16 4

at 1107, a reactor trip occurred on a RCS loop 'B' low flow  !

, signal. Reactor coolant loop 'B' flow transmitter FT-424 was out

) of service for calibration with ita low flow bistable tripped.

Venting of FT-424 caused a transient on a second loop 'B' flow transmitter, FT-425, which shares a common high pressure sensing line. This caused it to indicate below the low flow setpoint and  ;

trip its low flow bistable. This satisfied the logic for a reactor : rip on loop low f'aw. All of the plant's safety systems functioned as expected. Reactor restart was commenced at 1935, with the reactor being taken critical at 2016. The reactor was ,

resurned to 100% power at 0458 on August 17. j On August 23 at 1505, power was reduced to 95% to maintain  !

condenser vacuum within limits. Power was returned to 100% at  !

1952. [

On August 25 at 0007 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />, power was reduced to 90% for turbine

• stop and control valve testing. Power was restored to 100% at 0300.

j The plant was operating at 100% power at month's end.

l MAINTENANCE i

Pressurizer pressure transmitter PT-456 failed five times during '

the month. The transmitter was replaced and returned to service  ;

following the first four failures. The transmitter was out of j service at month's end pending completion of an engineering j

evaluation of replacement instructions prior to replacing the transmitter again. The failures appear to be a continuation of t

! previously identified problems with bourdon tube failures in this type of transmitter. A long term plan to replace these l transmittters with a different design is underway. i j -Replaced faulty main turbine 'B' master trip solenoid.  !

i -Completed 'A' and 'B' train outages for safety related equipment I i maintenance.

l

-Backflushed steam generator blowdown heat exchanger to reduce ,

fouling, geo9150166 880831  !

]

DR ADOCK 0500g 4

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! LICENSE AMENDMENTS /  !

l /

Amendment 149-Deletion of the Of fsite and Facility Organization ,

Charts from the Technical Specifications.

1 --

AVERAGE DAILY IJNIT POWER LEVEL DOCKET NO: 50-344 UNIT: Trojan DATE: 9-6-88 COMPLETED BY: G. C. Bair TELEPHONE: 503 556-1711 ext 232 MONTH Aucust 1988 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Nat) (MWe-Net) 1 1099 17 1056 2 1094 18 1096 3 1089 19 1098 4 1088 20 1099 5 1091 21 __

1092 6 1094 22 1067 7 1094 23 1078 8 2094 24 1096 9 1091 25 1097 10 1094 26 1088 ,

11 1097 27 1085 i

12 1090 28 1083 13 1092 29 1090 14 1096 30 1092 l$ ,

1996 31 1089 16 503 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day n the reporting month. Compute to the nearest whole megawatt.

i (9/77)

l OPERATING DATA REPORT )

DOCKET NO. 50-344 D AT E _9 8 8 COMPLETED BY C. G. Bair TELEPHONE 503-sss-3713 Ext. 232 OPERATI'IG STATUS Trojan Nuclear Plant Notes j g , g,g, g,y, July report-

2. Repothng Period: Augus t 1988 Change line 23 cumulative

3. Lkensed Thermal Power (MWI): 3411 data from 13.2 to 13.6.

4. Nameplate Rating (Gross MWe):

1216

5. Design Electrical Rating (Net MWe):

1130

6. Maximum Dep* *dable Capacity (Gross MWe):

1153 1 nm

7. Maximum Dependable Capacity (Net MWe):

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

n /n

9. Power Level To Whkh Restricted,lf Any (Net MWe): n/a

10. Reasons For Restrictions.If Any: D/^ ,

This Month YrAo.Dete Cuanulative l l

11. Hour:In Reporting Period 744 5855 105191 1 734.8 3600.9 64955.1 l

12. Number of Hours Reactor Was Critical 0 0 3887

13. Reactor Reserve Shutdown Hours 732.6 3554.6 64226.},

14. Hours Generator On Line  !

0 0 3249

15. Unit Reserve Shutdown Hour

16. Gross Thermel Energy Genersted (MWH) 2484158 1197436R 7o1s2s204

17. Gross Electrical Energy Generated (MWH) 833315 4035653 66901291

18. Net Electrical Energy Generated (MWH) 797474 3840141 63369448 18.5 _ 60.7 61.1,

19. Unit Service Factor 98.5 60.7 64.1

20. Unit Avsilability Factor

21. Unit Capacity Factor (Using MDC Net) 97.9 59.9 5Q 94.3 58.0 53.3

22. Unit Capacity Factor (Using DER Net) 1.5 1.A 17.s

23. Unit Forced Outage Rate

';4. Shutdown: Scheduled Over Next 6 Months (Type.Dete,and Duration of Ficht: .

n/a l

\

25. If Shut Down At End Of Report Period. Estimated Date of Startup: n/a l Achieved l a 26. Units in Test Status (Prior to Commercial Operation): Feeecast INITIAL CRITICA LITY n/a n/a INITIAL ELECTRICITY n/a n/a COMhlERCI AL OPER AT10N n/a n/a

1 DOCKET MO. 50-344 UNITSIIUIDOWNS ANU FOWEK REDUCTIONS UNIT NAME Trnjnn DAME 9-6-88 .

NIFLETED BY G_ G_ Bair 4

REPORT MONT)t Anaus t 1988 TEl.ErtlONE 503-556-3713 ext 232

":.o 3g E, gL cause a c..,ccis,e i

%'- DJ'c g } 4} 5Y} ac Ucensee Event gy c

$'g Acii.wi no h ^3@ 11

• g3 5 e$! jgg Repost 8r sa O

]O Psevent Recwrence 6

G 3 88-26 IA INSTRU Inadvertent reactor trip from 88-03 880816 F 11.4 reactor coolant loop B, low l flow bistable trips during ,

maintenance trouble-shooting by Instrumentation and Control I

technicians.

3 4 I 2 Exhibit G-Insts'uctions F: Forced Rerson: Method:

1-Manual for Preparation of Data 5: Scheduled A lquipment Fallase(Explain) Entry Sheets for Ucensee B41aintenance or Test 2-Manual Scrasu.

3-Autosnatic Sc;ain. Event RepurI(LER)Far(NUREG-C-Refocling 0161)

D-Regulasury Resialction 4-Other(Emplain)

EOperator Training & Ucense Exaniination 5

F-Administrative Exhibit I-Same Source G-Operational Errug (Emptain)

(~8/77)

Il-Otties IEuplain)

m use g e Portland General Electric Company Trojan Nuclear Plant 71760 Columbia Piver liwy September 7, 1988 Rainier, Oregon 97048 CAO-300-88 (503) 556-3713 US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Gentlemen Monthly Operating Report In accordance with the Trojan Nuclear Plant Technical Specifications reporting requirements, the Monthly Operating Data Report is submitted for August, 1988.

Sincer ly,

\ g C. A. Olmstead General Manager Attachment c: Mr. John B. Martin Regional Administrator, Region V US Nuclear Regulatory Commission Mr. Bill Dixon Department of Energy State of Oregon Resident Inspector MOR Distribution

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