ML20030D299
| ML20030D299 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 08/27/1981 |
| From: | Phyllis Clark JERSEY CENTRAL POWER & LIGHT CO. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.2, TASK-2.B.3, TASK-2.E.4.1, TASK-2.F.1, TASK-2.K.2.19, TASK-2.K.3.14, TASK-2.K.3.25, TASK-TM NUDOCS 8109010144 | |
| Download: ML20030D299 (3) | |
Text
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- 7 Jersey Central Power & Ught Company Madison Avenue at Punch Bowl Road Mornstown, New Jersey 07960 (201)455-8200 August 27, 1981 6'%
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' g Director, Nuclear Reactor Regulation h
United States Nuclear Regulatory Commission Wash!19 on, DC 20555 C>
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Dear Sir:
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Subject:
Oyster Creek Nuclear Ger. eating Station i
Docket No. 50-219 l
Cycle 10 Refueling /Ma!ntenance Outage The purpose of this letter is to Inform you of our intention to reschedule our Cycle 10 Refueling / Maintenance Outage from November 30, 1981 until the time period of February or March 1982 and to request approval of revised dates for specific regulatory requirements and I
comrr.i tments.
There are several f actors which necessitated this change in schedule.
The scope of the Cycle 10 Refueling / Maintenance Outage is significantly larger than any previous Oyster Creek Outage.
The large outage scope has resulted in the need for an extended time period, in whl h to better plan, prepare for, and ccordinate all the a :tivities associated with the Cycle 10 reload. One of the major outage projects, the Core Spray Sparger replacement, involves an extensive amount of work inside the reactor vessel.
Some of the extended planning and cocirdination ef fort involves training on a reactor vessel mockup.
This will prepare the work crews to ef ficiently do the sparger replacement and thereby significally reduce man-hour exposure. Also, a shutdown on November 30, 1981 will cause unnecessary economic hardship for the Jersey Central Power & Light Company (JCP&L) and its customers since TMI Unit 1 is not expected to achieve full power until after the November 30 date. Therefore, JCP&L would be forced to purchase electrical power at the PJM interchange rate.
Il addition to the general problems associated with properly preparing for the outage, there are several key pieces of equipment required for modifications to the plant which will not be delivered until after the November 30 date.
gf 1.
Since a full core of fload is required to install the new core spray spargers, an upgrade to the fuel pool cooling system is being engineered. The motor starters required for this project will not be 8109010144 810827 PDR ADOCK 05000219 P
PDR Jersey Central Power & Light Company is a Member of the General Public Utilities System
. e delivered until February 15, 1982.
2.
All of the equipment required for upgrading the Reactor Protection System (RPS) instrumentation will not be delivered until approximately April 1982.
3.
We are still in the process of designing the modifications to the Scram Discharge Volume (SDV) and do not expect that this project will be ready to support a November 30, 1931 outage.
Due to this change in outage schedule, we are requesting a change in the commitment dates of several regulatory required modifications.
1.
By NRC Order dated January 13, 1981, we are required to have completed all major Mark l Containment modifications by December 30, 1981.
We request that this Order be revised to require that these modifications be completed prior to startup from Cycle 10 reload refueling / maintenance outage. We feel that this delay will not pose an undue threat to public health and safety since the Oyster Creek facillry has completed all of the requirements of the short-term Mark i Program and some of the modifications of the long-term program.
2.
By letter dated July 31, 1980, we committed to replace, by December 1, 1981 the Containment Ventilation and Purge Valves with " qualified" valves. We Jequest that this commitment be revised to require these modifications prior to startup from our Cycle 10 reload refueling / maintenance outage. We feel this delay is justified since we are presently f ollowing the NRCs interim guidelines for these valves.
These are normally closed valves; and when opened they are mechanically restricted from opening more than 30'.
In addition, attached is our engineering evaluation showing that these valves can close against full dynamic blowdown loads from the 30' position.
3.
We have committed to comp lete the f oi lowing NUREG 0737 items by January 1, 1982:
ITEM SHORT TITLE
! l.E.4.1 Dedicated Hydrogen Penetrations l l.F.1 Accident Monitors ll.K.3.14 Isolation Condenser Isolation Signals iI.K.2.19 Recirculation Loop Intes;ock Ii.K.3.25 Recirculation Pump Seals lI.B.2.2 Pl ant ShleIding II.B.3.2 Post-Accident Sampling We request that the commitment date for these items be revised
to require that these items be completed prior to startup from our Cycle 10 reload refueling / maintenance outage.
We feel that the delay of these items is justified since they all are longer-term TMI Lessons Learned items that can be planned and scheduled to coincide with scheduled plant outages.
Also, all of the short-term Lessons Learned plant changes have been implemented at the Oyster Creek plant.
NUREG 0737, Item II.E.4.2, Containment Isolation, requires that all vent and purge valves be modified to isolate on a high radiation signal.
It was our original intention to use the Containment High Radiation Signal for this purpose and have this completed by the NUREG reguired date of January 1,1982. After carefully examining this requirement, we have concluded that it would not be an appropriate modification to the Oyster Creek facility. This determination is based upon the fact that the Purge and Vent Valves at OysterCreek are normally closed during power operation and in the event they were open, they would isolate on the diverse parameters of either low-low reactr water level or high drywell pressure.
It should be noted that we have also requested relief from the United States Environmental Protection agency National Pollutant Discharge Elimination System (NPDES) permit and the New Jersey Department of Environmental Protection NJPOES permits.
These permits prohibit scheduled plant shutdowns during the months of December, January, February, or March.
Since several different agencies are involved, the scheduling of the ref ueling outage is contingent upon receipt of relief from all agencies.
Your expeditious review of this request would be appreciated.
If you have any further questions, please contact Mr. James Knubel (201 299-2264) of my staff.
Very truly yours, f
,f u
Philip R'. Clark Vice President-Nuclear Jersey Central Power & Light Company