ML20247E591
| ML20247E591 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/19/1989 |
| From: | Hukill H GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| C311-89-2078, GL-89-08, GL-89-8, NUDOCS 8907260225 | |
| Download: ML20247E591 (2) | |
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- P GPU Nuclear Corporation
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- ,,mnm48o Middletown, Pennsylvania 17057 0191 717 044 7621 TELEX 84 2386 Writer's Direct Dial Number
July 19,1989
-C311-89-2078 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.
20555
Dear Sir:
Three Mile Island Nuclear Generating Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Response to NRC Generic Letter 89-08 Erosion / Corrosion-Induces Pipe Wall Thinning i
GPUN has implemented an erosion / corrosion monitoring program at TMI-1 which j
meets the intent of the NUMARC program (Attachment A to NUREG-1344). This I
program will serve in the interim and will subsequently be modified to provide a long term corporate level approach.
The utility industry is still evaluating the erosion / corrosion issue. Ongoing EPRI sponsored activities are being evaluated by our corporate engineering staff for incorporation into our program.
For example, we are currently comparing the EPRI CHEC and CHECMATE programs with our in-house generated computer program to determine which will best serve to identify a component's susceptibility to erosion / corrosion and thereby identify additional components for inspection. EPRI's acceptance criteria for structural evaluation of thinned piping is also under evaluation.
He consider completion of the EPRI sponsored activities and our evaluation of l
them to be prerequisites to establishing our formal long term program. Our current erosion / corrosion monitoring program will be used until our long term a
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1 GPO Nuclear Corporatlor, is a subsidiary of the General Public Utilities Corporation
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C311-89-2078 July 19, 1989
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program is implemented. We expect to implement our long term program.
consisting of formalized implementing documents or administrative controls in time to support the inspections scheduled for the 9R outage at TMI-1.
Sincerely, v.j' f
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u ill Vice President & Director, TMI-1 HDH/WGH/emw cc:
R. Hornan W. Russell F. Young Sworn and subscribpd to before iotpis
/Y_ day of hht 1989.
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