ML20206E042
| ML20206E042 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 11/01/1988 |
| From: | Cockfield D PORTLAND GENERAL ELECTRIC CO. |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| IEB-88-002, IEB-88-2, NUDOCS 8811170370 | |
| Download: ML20206E042 (2) | |
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RECD \\n NRC
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David W. Cockfield Vice President Nuclear t
November 1, 1988 l
Trojan Nucitar Plant Docket 50-344 1.icenso NPF-1 i
i Mr. John D. Martin Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lano, Suite 210 Walnut Creek CA 94596-5368
Dear Mr. Martin:
Nuclear Regulatory Commission (NRC)Bulletin 88-02, Rapidly Propage. ting Fatigue Cracks in Steam Cenerator Tubes NRC Bulletin 88-02 requested licenseos with Westinghosso-designed r,uclear i
power reactors with stoam r,enerators containing carbon steel support platos, to implement actions necessary to minimize the potential for a steam generator tutio rupture event caused by a rapidly propagating fatigue i
crack such as occurred at North Anna Unit 1.
The evaluation of this event l
for its applicability to the Trojan Nuclear Plant has been completed. The
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conclusion of this evaluation is that the steam generator tubes remaining in service at Trojrei are not expected to be susceptibio to fatigua rupture at the top support plate in a manner similar to the rupture that occurred a'. North Anna Unit 1.
Thereforo, no modifications, preventivo tubo plugging, or other mossures are necessary to provent a Noeth Anna-typo tube rupture at Trojan.
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8311170370 381101 FDR ADOCK 05000344 i
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f Mr. John B. Martin November 1, 1988 page 2 l
I Though the detailed evaluation is complete, the final report from our contractor has not been received. We expect to receive the report by mid-November, at which timo it will bo submitted for NRC review.
I Sincerely, t
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U.S. Nuclear Regulatory Commission i
ATTN: Document Control Desk Washington DC i
4 Mr. William T. Dixon I
State of Oregon
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Department of Energy i
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Mr. R. C. Barr
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NRC Resident Inspect.or j
Trojan Nuclear Plant i
Subscribed and sworn to before me this 1st day of November 1988.
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Notary Public of Oregon l
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My Commissior Expires
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