ML20236V861
| ML20236V861 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 08/31/1987 |
| From: | Baran R, Fiedler P GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC |
| References | |
| NUDOCS 8712070136 | |
| Download: ML20236V861 (7) | |
Text
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MONTHLY OPERATING REPORT - AUGUST 1987 At the beginning of the report period, Oyster Creek remained shut down as a result of a July 30 Reactor Scram.
i Reactor restart commenced on August 4 after repairing the air supply valve manifold which caused the scram.
The generator was placed on-line on August 5, and power was increased to maximum load on August 8.
On August 16, load was reduced to 385 MWe to repair a leaking drain line on the discharge side of the reactor feed pump.
Repairs were completed on August 18, and load was increased to 585 MWe.
Then, a reduction to 511 MWe was required to investigate a high temperature alarm on reactor feed pump motor bearings.
The alarm setpoints were raised per vendor recommendations and the problem was still being investigated at the end of the month.
After raising the setpoints, generator load was raised to 632 MWe on August 21.
Maximum generator load was maintained until the end of the month.
Throughout the
- month, plant load varied with changes in intake temperature.
On two (2) occasions, load had to be reduced to avoid exceeding the discharge temperature limit.
Additional load reductions were required periodically to back wash the main condensers.
Generator load was 641 MWe at the end of the report period.
2316g 8712070136 B70831 LN PDR ADOCK 050C0219
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PDR R
MONTHLY OPERATING REPORT AUGUST 1987 The following Licensee Event Report was submitted during the month of August 1987:
LER 87-027:
" Electrical Storm Induced Containment Isolation and Standby Gas l
Treatment System Initiation Due to Automatic Bus Transfer Time Exceeding RPS Relay Dropout Time" On July 30, 1987 at approximately 0648 hours0.0075 days <br />0.18 hours <br />0.00107 weeks <br />2.46564e-4 months <br />, and on July 31,1987 at approximately 0355 and 820 hours0.00949 days <br />0.228 hours <br />0.00136 weeks <br />3.1201e-4 months <br /> primary and secondary. containment isolations with Standby Gas Treatment System (SBGTS) initiations occurred as a result of an automatic electrical bus transfer caused by a lightning strike of the 34.5 KV offsite power supply. At the time the reactor was in the REFUEL mode and was in the process of a controlled cooldown following a scram which occurred July 30,1987 at 0459 hours0.00531 days <br />0.128 hours <br />7.589286e-4 weeks <br />1.746495e-4 months <br />.
The events occurred when lightning struck the i
34.5 KV lines outside the plant causing voltage transients in the lines.
The voltage transients caused Vital AC Power Panel 1 (VACP-1) to transfer to its alternate power supply.
The power supply transfers caused several Reactor Protection System (RPS) relays to de-energize, causing the containment isolations and SBGTS initiations.
The isolation signal was reset manually each time and SBGTS was secured.
The safety significance of this event is minimal as only a challenge to the containment isolatif ons and SBGTS occurred.
A previous evaluation discovered that the shortest transfer time achievable with the installed alternate power automatic transfer switch exceeds the dropout time for the associated RPS relays. To prevent recurrence of this event, GPUN engineering has proposed that the power supply for the affected relays be changed to an existing rotary-inverter fed :ontinuous power source.
Pending corporate management approval, this will be accomplished during a
. future outage.
A
.w (0841 A)
Oyster Creek Station #1 Docket No. 50-219 REFUELING INFORMATION - AUGUST, 1987 Name of Facility: Oyster Creek Station #1 Scheduled date for next refueling shutdown: N/A Scheduled date for restart following refueling:
Will refueling or resumption of operation thereafter require a Technical Specification change or other license amendment?
No Scheduled date(s) for submitting proposed licensing action and supporting information:
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 and performance 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
=
(b) in the spent fuel storage pool = 1392 (c) in dry storage 20
=
The present licensed spent fuel pool storage capacity and the size of any inccease in licensed storage capacity that has been requested or is planned, in ranber of fuel assemblies:
Present licensed capacity:
2600 The projected date of the last refueling that can be discharged to the spent fuel pool assuming the present licensed capacity:
Reracking of the fuel pool is in progress.
Six (6) out of ten (10) racks have been installed to date.
When reracking is completed, discharge capacity to the spent fuel pool will be available until 1994 refueling outage.
1619B l
OPERATING DATA REPORT OPERATING STATUS 1.
DOCKET:
50-219 L
2.
REPORTING PERIOD:
AUGUST, 1987 L
3.
UTILITY CONTACT:
JOHN H. SEDAR, JR.
609-971-4698 4.
LICENSED THERMAL POWER (Wt):
1930 5.
NAMEPLATE RATING (GROSS We):
687.5 X 0.8 = 550 1
6.
DESIGN ELECTRICAL RATING (NET We):
650 7.
MAXIMUM DEPENDABLE CAPACITY (GROSS MWe):
650 8.
MAXIMUM DEPENDABLE CAPACITY (NET MWe):
620 9.
IF Q1ANGES OCCUR AB0VE SINCE LAST REPORT, GIVE REASONS:
NONE
- 10. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWe):
N/A
- 11. REASON FOR RESTRICTION, IF ANY:
NONE MONTH YEAR CUMULATIVE
- 12. REPORT PERIOD HRS 744.0 5831.0 155064.0
- 13. HOURS RX CRITICAL 663.0 4448.8 99285.3
- 14. RX RESERVE SHTDWN HRS 0.0 0.0 918.2
- 15. HRS GENERATOR ON-LINE 637.1 4299.4 96669.4
- 17. GROSS THERM ENER (MWH) 1164000 7601304 160557689
- 18. GROSS ELEC ENER (MWH) 382940 2536450 54204695
- 19. NET ELEC ENER (MWH) 367759 2430971 52041048
- 20. (Jr SERVICE FACTOR 85.6 73.7 62.3 21.
lJr AVAIL FACTOR 85.6 73.7 63.1'
- 24. UT FORCED OUTAGE RATE 14.4 26.3 11.2 I
25.
FORCED OUTAGE HRS 106.9 1531.6 12183.4
- 26. SHUTDOWNS SQ1EDULED OVER NEXT 6 MONTHS (TYPE, DATE, DURATION):
N/A
- 27. IF CURREKTLY SHUTDOWN ESTDiATED STARTUP TIME:
}
1965B t
l AVERAGE DAILY POWER LEVEL NET MWe DOCKET #........
50-219 l
UNIT.......... 0YSTER CREEK #1 REPORT DATE.......SEPE'IMBER 1,1987 COMPILED BY....... JOHN H. SEDAR, JR.
TELEPHONE #......
609-971-4698 MONTH AUGUST, 1987 DAY MW DAY MW 1.
0 16.
554 2.
0 17.
398 3.
0 18, 505 4.
0 19, 564 5.
96 20.
595 j
6.
447 21.
608 7.
520 22.
611 8.
609 23.
615 9.
598 24.
622 10, 601 25.
620 11.
611 26.
620 12.
615 27.
619 13.
615 28.
620 14.
617 29.
617 15, 613 30.
619 31.
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j GPU Nuclear Corporation
, NQQIgf Post Office Box 388 Route 9 South F
p Forked River, New Jersey 08731-0388 609 971-4000 Writer's Direct Dial Number:
Director Office of Management Information September 15, 1987 U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Sir:
Subject:
Oyster Creek Nuclear Generating Station
-l Docket No. 50-219 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 Oyster Creek Nuclear Generating Station.
If you should have any questions, please contact Mr. Joseph D. Kowalski, Oyster Creek Licensing Manager at (609)971-4643.
Very truly yours, A
~'
P ter. Fiellier Vice Presi-dent and Director Oyster Creek
[
PBF:KB:dmd(0841 A) q Enclosures (1
cc: Director (10)
/
Office of Inspection and Enforcement I(/
U.S. Nuclear Regulatory Commission
,9 Washington, DC 20555 Mr. William T. Russell, Administrator Region I U.S. Nuclear Regulatory Commission 631 Park Avenue N
King of Prussia, PA 19406 8
\\
Mr. Alexander W. Dromerick, Project Manager U.S. Nuclear Regulatory Commission i
Division of Reactor Projects I/II l
7920 Norfolk Avenue, Phillips Bldg.
/,;
I Bethesda, MD 20014 f
I NRC Resident Inspector Oyster Creek Nuclear Generating Station i
GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation J