ML20097G210

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Provides Response to NRC Ltr Dated 920421,requesting Addl Info Concerning Importance of Stress Improvement Work,When Viewed in Relation to Other Work Currently Being Considered for Cycle 14R Refueling Outage
ML20097G210
Person / Time
Site: Oyster Creek
Issue date: 06/16/1992
From: Long R
GENERAL PUBLIC UTILITIES CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
C-92-1789, C000-92-1789, C321-92-2177, NUDOCS 9206160375
Download: ML20097G210 (11)


Text

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OPU Nuclear Corporation a.. Nuclear o- ~~

Partereny, New Jersey 07o54 201 316 7000 TELEX 136 482 Wnter's Direct Dial Numtwer C300-92-1789 C321-92-2177 U. S. Nuclear Regulatory Commission Attention:

Document Control Desk Washington, D.C.

20555 Gentlemen:

Subject:

Oyster Creek Nuclear Generating Station facility License No. C)R-16 Docket No. 50-219 Cycle 14R Outage Workscope

Reference:

GPU Nuclear letter C321-92-2080 to the NRC dated April 21,1992, " Deferral of Isolation Condenser Piping Stress Improvement in the above reference, we indicated our intent and provided technical justification to defer the stress improvement of welds in the new isolation condenser piping installed during Oyster Creek's last (Cycle 13R) refueling outage. We requested the NRC staff's concurrence that this deferral would not negatively impact the application of leak-before-break technology to the piping.

This letter is in response to a staff request that we provide additional information concerning the importance of the stress improvement work when viewed in relation to the other work currently being considered for the Cycle 14R refueling outage. The request was made by telephone on May 8,1992.

Attached is a listing of projects that are being considered for the 14R outage including a short definition of their respective priority. The outage scope as currently ide-tified bounds tiie resources available for the 14R outage at Oyster Creek. The work scope for the 14R outage includes projects which are regardeu as higher in priority than the stress improvement of the isolation condenser piping welds and are due to NRC commitments and requirements, Technical Specification requirements, and requirements of other organizations (i.e.

E.P. A.,1NPO,N.M.L.,0SHA). This work is considered mandatory scope for the 14R outage.

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C321-92-2177 Page 2 In addition to those projects which are NRC required, required by federal or state agencies or the insurance carrier, the listing of scope proposed for the 14R outage also contains high priority projects to improve plant reliability and material condition and reduce collective radiation exposure. Several of these pro'<ts are regarded as necessary for a reliable and safe operating cycle. Those projects not regarded as mandatory support an ongoing effort to improve equipment operability and overall material condition. These projects are considered high priority due to the productive results experienced during recent operating periods after similar efforts.

The lower priority assigned to isolation condenser weld stress improvement is based on the technical assessment which indicates a negligible potential for IGSCC-related problems in the absence of stress improvement over the next cycle or beyond.

Sincerelyy[

/

,v A. L. Long O

/ Vice President and Director

/

Corporate Services /TMI-2 RLL/PFC/amk Attachment

ct Admir.htrator, Region I NPC Oyster Creek Project Manager

'RC Oyster Creek Resident inspector 12N217? let i

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