ML20246B598
| ML20246B598 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 07/31/1989 |
| From: | Fitzpatrick E, Harma H GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 8908230405 | |
| Download: ML20246B598 (8) | |
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i GPU Nuclear Corporation
, Nuc ear
==:;388 Forked River New Jersey 08731-0388 609 971-4000 Writer's Direct Dial Number:
August 15, 1989 U.S. Nuclear Regulatory Commission j
ATTN: Document Controi Desk Washington, D.C.
.20555
Dear Sir:
Subject:
Oyster Creek Nuclear Generating Station Docket No. 50-219 I
Monthly Operating Report In accordance with the_ Oyster Creek Nuclear Generating Station Operating License No. DPR-16, Appendix A, Section 6.9.1.C, enclosed are two (2) copies.of the Monthly operating Data (gray book information) for the l
Oyster Creek Nuclear Generating Station.
If you should have any questions, please contact Kathy Barnes, Oyster Creek Licensing at (609) 971-4390.
Very truly yours, E. E. Fitz trick Vice President and Director Oyster Creek EEF:KFB dmd (0841A)
Enclosures ces Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. William T. Russell, Administrator Region I m
U.S. Nuclear Regulatory Commission M
475 Allendale Avenue QQ.
King of Prussia, PA 19406 00$
Mr. Alexander W. Dromerick, Froject Manager U.S. Nuclear Regulatory Commission
.oo Washington, DC 20555 1
to op QG NRC Resident Inspector I
CO Oyster Creek Nuclear Generating Station 1
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GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation
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MONTHLY OPERATING REPORT - JULY 1989 At the beginning of the report period, Oyster Creek was in the process of returning the plant to-service with one transformer.
Reactor startup commenced on June 30 and the generator was placed on-line July 1.
Maximum gross generator' load of 330 MWe j
was achieved on July 2.
Plant load was limited due to only M1B main transformer in service.
On July 11, while operating at 57% power, a generator trip occurred due-to failure of M1B main transformer and caused a reactor scram due to an anticipatory turbine trip signal.
The plant responded as expected during the transient and was subsequently placed in a cold shutdown condition.
Following completion;of required maintenance and preparations for operation with the replacement M1A transformer available for service, reactor startup commenced on July 17.
Delays were experienced with placing the generator on-line until July 19, primarily due to an in-flux of eel grass which-fouled the Turbine Building Closed Cooling Water heat exchangers.
The administrative limit of 400 MWe (gross) established during the break-in period of the replacement transformer was achieved on July 19.
The administrative limit was subsequently increased to 425 Mwe (gross).
On July 25, during performance of a Reactor Building to Torus Vacuum Breaker surveillance, a differential pressure switch failed to reset.
In accordance with Technical Specifications, plant shutdown commenced.
Following repairs, reactor shutdown was terminated on July 26 with plant load at approximately 250 MWe.,
Maximum plant load, approximately 71% power, was achieved on July 26 and maintained for the balance of the report period.
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1 MONTHLY OPERATING REPORT JULY 1989 l
l The following Licensee Event Reports were submitted during the month of July 1989:
LER 89-016-MAIN TRANSFORMER FAILURE CAUSES AUTOMATIC REACTOR SHUTDOWN on June 25, 1989 at 0008 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, the main generator tripped due to a phase differential condition caused by a fault in one of the main output transformers. When the generator tripped a turbine trip signal was generated i
which resulted in an anticipatory reactor scram. The plant was cooled down with the main condensers and the shutdown cooling system and reached a cold shutdown condition at 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br />. The cause of this event was equipment failure. Examination of the transformer determined that an internal winding had failed thereby causing the phase differential condition which caused the generator trip. This transient was within the design basis of the plant and had no safety significance. Preparations have been made to remove the failed transformer and install a spare. Until the spare is installed the plant will be operated at half load. No other corrective action was determined necessary.
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OPERATING DATA REPORT OPERATING STATUS 1.
DOCKET:
50-219 2.
REPORTING.. PERIOD: 07/89
- 3.. UTILITY CONTACT:
HARI S. SHARMA 609-971 -4638 4.
LICENSED THERMAL POWER-( Nt):
1930 5.
NAIEPLATE RATING (GROSS We):
687.5 X 0.8 = 550 6.
DESIGN ELECTRICAL RATING (NET We):
650 7
MAXIEM DEPENDABLE CAPACITY (GROSS We):
'642 8.
MAXIMJM DEPENDABLE CAPACITY (NET We):
620 9.
IF CHANGES OCCUR AB0VE SINCE LAST REPORT,'.GIVE REASONS:
NONE
- 10. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET We): 425 Gross ( Admin.
Limit) 11.
REASON FOR RESTRICTION, IF ANY:
1 Output Transformer Available.
MONTH YEAR CUMJLATIVE
- 12. REPORT PERIOD HRS 744.0 5087.0 171863.0
- 13. HOURS RX CRITICAL-574.8 1707.5 107952.9
- 14. RX RESERVE SHTDWN HRS 0.0 0.0.
91 8. 2 15.. HRS GENERATOR ON-LINE 525.4 1518.8 105062.3 16.
UT RESERVE SHTDWN HRS 0.0 0.0 1208.6 j
- 17. GROSS THERM ENER ( WH) 651800 2386670 175907559
- 18. GROSS ELEC ENER ( WH) 193830-760080 59364264
- 19. NET ELEC ENER (WH) 182696 707289 56967157 20.
UT. SERVICE FACTOR 70.6 29.9 61.1 i
. 21. UT AVAIL FACTOR 70.6 29.9 61. 8 I
' 51. 0 l
- 24. UT FORCED OUTAGE RATE 29.4 23.0 11.7' 25.
FORCED OUTAGE HRS 21 8.6 454.3 13965.0 l
- 26. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE, DURATION):
None 27.
IF CURRENTLY SHUTDOWN ESTIMATED STARTUP TIVE:
N/A 4
16198/0045X l
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AVERAGE DAILY POWER LEVEL
. NET MWe.
I 4
-DOCKET #.........50219 UNIT........... 0YSTER CREEK #1
- REPORT DATE........ August 3 1989 COMPILED BY........HARI S. SHARMA-TELEPHONE #......
609-971-4638' MONTH
' JULY, 1989 DAY-W DAY W
1.-
0
- 17.
0 2.
262 18.
-0 t
3.
309 19.-
118 4.
309 20.
.378 5.
31 4.
21.
389 6.
31 7
- 22. -
404 1
7.
31 5 2 3.-
398 8.
31 5 24.
4 01
'94 31 4 25.
4 01 10.
31 4 26.
366 11.
5 27.
404
- 12. :
0 28.
-403 13.
0 29.
408 1
i d
14.
0 30.
411 l
1
-15.
0 31.
409 16.
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- 1619B/0045X i
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Oyster Creek Station #1 Docket No. 50-219
!:I. FUELING INFORMATION - JULY,1989 Name of Facility: Oyster Creek Station #1 Scheduled date for next refueling shutdown: Ja nua ry 11, 1991 pending necessary state approval.
Scheduled date for restart following refueling: April 13,1991
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Will refueling or resumption of opera tion thereafter require a Technical Specification change or other license amendu.ent?
Yes Scheduled date(s) for submitting proposed licensing action and supporting infonnation:
July 15,1990 Important licensing considerations associated with refueling, e.g.,
new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures:
- 1. General Electric Fuel Assemblies fuel design ano parforma nce analysis methods have been approved by the NRC.
- 2. Exxon Fuel Assemblies - no major changes have been made nor are there any anticipated.
The number of fuel assemblies (a) in the core 560
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(b) in the spent fuel storage pool 1595
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(c) in dry storage 37
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The present licer.;. spent fuel pool storage capacity and the size of any increase in licensed storage capacity that has been requested or is planned, in number of fuel assemblies:
Present licensed capacity: 2600 The projected date of the last refueling that can be discharged to the spent fuel pool essuming the present licensed capacity:
Reracking of the fuel pool is in progress.
Nine (9) out of ten (10) racks ha ve been installed to date.- When refacking is completed, discharge capacity to the spent fuel pool will be available until 1994 refueling outage.
1619B/0045X
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