ML20150A629
| ML20150A629 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 05/31/1988 |
| From: | Baran R GENERAL PUBLIC UTILITIES CORP. |
| To: | |
| Shared Package | |
| ML20150A633 | List: |
| References | |
| NUDOCS 8807080110 | |
| Download: ML20150A629 (5) | |
Text
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MONTHLY OPERATING REPORT MAY 1988 The following Licensee Event Reports were submitted during the month of May 1988:
LER 88-007:
INADEQUATE SUPPORT OF REACTOR SAMPLE LINE DUE TO MISC 0FfiUNICATION OF TECHNICAL DATA CAUSED BY PERSONNEL ERROR On April 12, 1988 it was determined that a Reactor Coolant sample line containing a containment isolation valve was not adequately supported.
The discovery was made several days earlier by contractor personnel but a preliminary evaluation showed no problem existed.
Later, when additional information was obtained it was determined that the valve weight was greater than the limit established by the analysis.
The event is attributed to personnel error because in 1986 the valve in the line was replaced with a valve approximately three (3) times heavier than the original valve.
When the weight increase was analyzed the information was miscommunicated on the actual orientation of the valve so the analysis was not accurate.
The safety significance of this occurrence is considered minimal because present evaluations have determined that no piping failures would have occurred although code allowable stresses would have been exceeded in a design basis seismic event.
Additionally, the inside containment isolation valve would have remained operable and would have isolated the line.
The line will remain isolated until additional supports are installed.
This LER will be distributed as requirea reading for plant engineering personnel.
LER 88-008:
STANDBY GAS INITIATION CAUSED BY PROCEDURAL NONCOMPLI ANCE WHILE PLACING AUGEMENTED OFFGAS SYSTEM IN SERVICE On April 14,1988 at 0941 hours0.0109 days <br />0.261 hours <br />0.00156 weeks <br />3.580505e-4 months <br />, a Reactor Building Isolation and Standby Gas Treatment System automatic initiation occurred.
The reactor was operating at full power at the time.
The cause of the event was failure to drain the Augmented Offgas (A0G) system's offgas inlet line in accordance with the system operating procedure.
This caused system pressure oscillations which eventually forced radioactive gases past a drain line sump water seal, into the area under the plant's ventilation stack.
The safety significance is minimal because of the limited duration of the release into the stack base l
area and because the safety systems functioned as designed.
Immediate corrective action taken was to enter the plant's Emergency Operating Procedures for secondary containment control.
The offgas inlet line was drained before the A0G system was returned to service.
The A0G system operating procedure will be revised to drain the offgas inlet line immediately before placing the A0G system in service.
The drain line sump water seal will be evaluated for adequacy and modified if necessary.
Personnel involved in this event will receive counseling on the importance of proper turnover and strict procedural compliance. Additionally, this report will be made required reading for Radwaste Operations personnel.
8807000110 880615 dmd:0841 A kDR ADOCK 05000219 PDR
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50NTHLY OPFRATING REPORT - hiAY 1988 s
At the beginning of the report period, Oyster Creek was operating at approximately 656 hWe.
Throughout the month, plant load was slightly:
lower than expected due to a leak in a high pressure feedwater heater.
In addition, rising intake canal water - temperature is affecting plant load by impacting condenser efficiency.
On hiay 20 at 2008 hours0.0232 days <br />0.558 hours <br />0.00332 weeks <br />7.64044e-4 months <br />, a planned power reduction commenced to accommodate a main steam isolation. valve ($1SIV). full. closure test.
Plant load was decreased to approximately 220 hWe by 0301 hours0.00348 days <br />0.0836 hours <br />4.976852e-4 weeks <br />1.145305e-4 months <br /> on-hiay 21.
Various other maintenance and operational.-tasks were completed while at reduced load.
Following satisfactory test completion, plant load was increased at 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br />.
Full load was achieved at 2150 hours0.0249 days <br />0.597 hours <br />0.00355 weeks <br />8.18075e-4 months <br /> on biay 22 and'was maintained for the balance of the report period.
Average gross generator load varied between 643 and 650 SWe due to changes in the intake canal water temperature.
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DOCKET NO. 50-219 UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT NAME Oyster Creek June 1988 DATE COMPLETED BY R. Baran TELEPflONE 971-4640 REPORT MONTII Mav I988 METHOO OF SHUTTING DOWN TYPE F: FORCED DURATION THE REACTOR OR NO.
DATE S: SCHEDULED (HOURS)
REASON (1)
REDUCING POWER (2)
CORRE CTIVE ACTIONS /COMMEN15 66 9/10/87 F
1804.4 A
1 Maintenance outage following forced shutdown - September 10 to November 24.
SUAM4ARY:
(2) METHOD (1) REASON A:
Equipment Failure (Explain)
E:
Operator Training &
1: Manual B: Maint. or Test License Examination 2: Manual Scram C: Refueling F: Administrative 3: Automatic Scram D:
Regulatory Restriction G: Operational Error (Explain) 4: Other (Explain) li: Other (Explain) 4
OPERATING DATA REPORT OPERATING STATUS 1.
DOCKET:
50-219 2.
REPORTING PERIOD: MAY, 1988 3.
UTILITY CONTACT:
JOHN H. SEDAR, JR.
609-971-4698 4.
' LICENSED THERMAL POWER (MWt):
1930 5.
NAMEPLATE RATING (GROSS MWe):
687.5 X 0.8 = 550 6.
DESIGN ELECTRICAL RATING (NET MWe):
650 7.
MAXIMUM DEPENDABLE CAPACITY (GROSS MWe):
642 8.
MAXIMUM DEPENDABLE CAPACITY (NET MWe):
620 9.
IF CHANGES OCCUR AB0VE SINCE LAST REPORT, GIVE REASONS:
NONE 10.
POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWe):
11.
REASON FOR RESTRICTION, IF ANY: NONE MONTH YEAR CUMULATIVE 12.
REPORT PERIOD HRS 744.0 3647.0 161640.0
- 13. HOURS RX CRITICAL 744.0 3647.0 104103.4 14.
RX RESERVE SHTDWN HRS 0.0 0.0 918.2 15.
HRS GENERATOR ON-LINE 744.0 3647.0 101439.9 16.
UT RESERVE SHIDWN HRS 0.0 0.0 1208.6
- 17. GROSS THERM ENER (MWH) 1408000 6924000 169571789 l
- 18. GROSS ELEC ENER (MWH) 474660 2374430 57292784
- 19. NET ELEC ENER (MWH) 457540 2289384 55010380 20.
UT SERVICE FACTOR 100.0 100.0 62.8 21.
UT AVAIL FACTOR 100.0 100.0 63.5 22.
UT CAP FACTOR (MDC NET) 99.2 101.2 54.9
UT FORCED OUTAGE RATE 0.0 0.0 11.1 25.
FORCED OUTAGE HRS 0.0 0.0 12686.3 26.
SHUTDOWNS SCHEDULED OVER NEXT 6 MC IHS (TYPE, DATE, DURATION): Cycle 12 ref ueling outage scheduled for Oc' ober 1 through December 29, 1988.
27.
IF CURRENTLY SHUTDOWN ESTIMATED IARTUP TIME: N/A
AVERAGE DAILY POWER LEVEL NET MWe DOCKET 4........
50219 UNIT.
..... 0YSTER CREEK #1 REPORT DATE....... June 02, 1988 COMPILED BY.
. JOHN H. SEDAR JR.
TELEPHONE #......
609-971-4698 MONTH MAY, 1988 DAY MW DAY MW 1.
632 17 626 2.
631 18 628 3.
632 19 630 4,
632 20 625 5.
632 21 335 6.
632 22 559 7.
633 23 623 8.
631 24 621 9.
527 25 622 10.
627 26 626 11, 628 27 623 12.
627 28 621 13.
626 29 620 14, 626 30 616 15.
629 31 616 16.
629 1968B l
l
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