ML20133G902
| ML20133G902 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 05/31/1985 |
| From: | Emrich W, Molnar J GENERAL PUBLIC UTILITIES CORP. |
| To: | |
| Shared Package | |
| ML20133G887 | List: |
| References | |
| NUDOCS 8508090116 | |
| Download: ML20133G902 (5) | |
Text
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t MON 111LY 0 PIRATING REPORT - MAY 1985 At the beginning of the report period, Oyster Creek was operating at 98%
thermal power (646 MWe).
On the evening of May 1, while in the process of replacing collector rings on No. 3 circulating water pump motor, No. 4 circulating water pump tripped. A rapid load reduction to approximately 450 FMe was required to prevent a reactor scram on low condenser vacuum.
Repairs were completed and the units were returned to service.
Power was increased to approximately 650 MWe on May 2 and maintained between 620 and 650 MWe, as restricted by core thermal (MAPUiGR) limits and/or condensate header pressure, for the remainder of the report period except as noted.
On May 13, power was reduced to approximately 590 FMe in response to elevated feedwater pump motor stator temperatures.
Feedpump room ventilation system inspections revealed obstructed exhaust duct turning vanes and partially closed dampers which restricted air flow.
Power was increased to approximately 610 MWe on May 14, following damper adjustments and cleaning of accessible flow turning vanes.
Installation of access ports to allow inspection of inaccessible turning vanes in the Feedpump Room Ventilation System has been scheduled for May
- 31. After installation of access ports and cleaning of turning vanes, a system flow test and evaluation will commence.
On May 18, power was reduced to 400 MWe to accommodate a control rod sequence change. On May 20, power was slowly increased to 590 MWe.
Late in the evening on May 20, a salt leak developed in "B" north main condenser requiring an emergency reduction in power to approximately 445 FHe.
Power was maintained between 450 and 500 MWe while maintenance crews attempted to identify the leak source.
On May 22, two (2) condenser tube leaks were identified and plugged and power was increased to 630 MWe on May 23.
On May 25, power was increased to 645 MWe and was maintained between 635 and 650 MWe for the balance of the report period.
Corrective maintenance completed during the report period included:
Emergency service water pump 52A failed its associated surveillance o
test on low discharge pressure on May 16.
The pump was returned to operable status on May 21.
Plant Engineering determined that low discharge pressure was caused by a Chlorine System line which cross-connects the two Emergency Service Water Systems.
The Chlorine System will be isolated when testing is in progress to prevent recurrence of the low pressure condition.
System flow was measured with the Chlorination System connected and was determined to be satisfactory.
The thermocouple for reactor safety valve NR-28N was returned to o
service by connecting a
digital voltmeter to monitor the temperature.
o
'A' Control Rod Drive pump motor bearing was replaced. Testing was completed and the pump declared operable.
G50BO90116 850611
.7 PDR ADOCK 05000219 R
I MONIELY OPERATING REPORT - MAY 1985 Page 2 Investigations / Repairs in progress at the end of the report period include:
o On May 2, while conducting an operability test on
'B' Isolation Condenser, condensate return line isolation valve V-14-35 failed to operate.
On May 8, following torque switch setting adjustments, the operability test was successfully completed and
'B' Isolation Condenser was declared operable.
The plant continued to experience through-valve leakage on isolation condenser valve V-14-35.
"B" Isolation Condenser shell side temperature has remained approximately 1860F.
Plant Engineering and Tech. Functions personnel have analyzed the problem and determined that no action can be taken while the plant is operating to correct the condition.
Valve V-14-35 will be inspected during the October Mini-Outage.
In the interim, weekly MOVATS tests will be conducted to verify operability.
o Plant Engineering conducted an investigation of elevated Trunnion Room temperatures.
A joint Tech.
Functions / Plant Engineering Diagnostic Plan has been developed for implementation June 3.
o As a result of NRC Inspection 85-14 and their evaluation of Oyster Creek's response to IGE Bulletins 79-02 and 79-14, Technical Functions is conducting a substantial pipe hanger inspection.
o No. 1 seal has failed on "E"
By
- design, the No.
2 seal is functioning properly to maintain operability of the pump.
o Repairs to No. 1 dilution pump were completed. Testing of the pump was in progress at the end of the report period.
NOTE: At the end of the report period, drywell unidentified leak rate was 0.98 gpm.
Identified leak rate was 4.40 gpm.
0156g L.
e-Oyster Creek Station il Docket No. 50-219 REFUELING INFORMATION - May, 1985 Name of Facility: Oyster Creek Station il Scheduled date for next refueling shutdown:
April 12, 1986 Scheduled date for restart following refueling: October 13, 1986 Will refueling or resumption of operation thereaf ter require a Technical Specification change or other license anendment?
Yes Scheduled date(s) for submitting proposed licensing action and supporting information:
June, 1985 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.
New operating procedures, if necessary, will be submitted at a later date.
- 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 = 1161 The present licensed 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: 2,600 The projected date of the last refueling that can be discharged to the spent fuel pool assuming the present licensed capacity:
Recacking of the fuel pool is in progress.
Four 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 1990 refueling outage.
r OPERATING DATA REPORT OPERATING STATUS 1.
DOCKET:
50-219 2.
REPORTING PERIOD:
May 1985 3.
UTILITY CONTACT:
JOSEPH R. MOLNAR 609-971-4699 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):
650 8.
MAXIMUM DEPENDABLE CAPACITY (NET MWe):
620 9.
IF CHANGES OCCUR ABOVE 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 3624.0 135337.0 13.
HOURS RX CRITICAL 744.0 2965.0 88592.9 14.
RX RESERVE SHTDWN HRS 0.0 0.0 469.7 15.
HRS GENERATOR ON-LINE 744.0 2822.7 86359.4 16.
UT RESERVE SHTDWN HRS 0.0 19.6 22.3 17.
GROSS THERM ENER (MWH) 1332000 4856940 142119269 18.
GROSS ELEC ENER (MWH) 447750 1661710 48044705 19.
NET ELEC ENER (MWH) 431110 1594705 46157270 20.
UT SERVICE FACTOR 100.0 77.9 63.8 21.
UT AVAIL FACTOR 100.0 78.4 63.8 22.
UT CAP FACTOR (MDC NET) 93.5 71.0 55.0 23.
UT CAP FACTOR (DER NET) 89.1 67.7 52.5 24.
UT FORCED OUTAGE RATE 0.0 21.7 10.1 25.
FORCED OUTAGE HRS 0.0 781.7 9732.8 26.
SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE, DURATION):
OCTOBER 1, 1985 - (1 month) 27.
IF CURRENTLY SHUTDOWN ESTIMATED STARTUP TIME:
N/A
r AVERAGE DAILY POWER LEVEL NET MWe DOCKET d........
50-219 UNIT.
. Oyster Creek il REPORT DATE.
. JUNE 05, 1985 COMPILED BY.
. WILLIAM J. EMRICH, JR.
TELEPHONE I....... 609-971-4637 MONTH MAY, 1985 DAY MW DAY NW 1.
587 16.
590 2.
628 17.
587 3.
630 18, 411 4.
616 19.
455 5.
617 20.
546 6.
604
- 21..
446 7.
603 22.
467 8.
599 23.
534 9.
601 24.
618 10.
589 25.
617 11.
585 26.
623 12.
584 27.
616 13.
554 28.
616 14.
579 29.
625 15.
597 30.
621 31.
619