ML17059B544
| ML17059B544 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 05/08/1997 |
| From: | Hood D NRC (Affiliation Not Assigned) |
| To: | Catherine Scott AFFILIATION NOT ASSIGNED |
| References | |
| NUDOCS 9705190013 | |
| Download: ML17059B544 (6) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 2055&4001 Hay 8, 1997 Hs. Colleen Scott 130 Calkins Road
- Volney, NY 13069
Dear Hs. Scott:
During the meeting of April 14, 1997, in Fulton, New York, between the U.S.
Nuclear Regulatory Commission (NRC) and the public, you provided a petition requesting that the NRC and State of New York not allow Niagara Hohawk Power Corporation to restar t Nine Hile Point Unit 1 unless and until the cracked core shroud is replaced.
The petition was signed by 134 residents of New York.
On Hay 6,
- 1997, you faxed five additional pages to this petition containing the signatures of 68 residents of New York.
The NRC has reviewed Niagara Hohawk's letter of April 8,
- 1997, as supplemented April 11, 23, 25 (two letters),
26, 27 (two letters),
30, and Hay 7, 1997.
In these letters, Niagara Hohawk describes changes made to ensure that the four tie rod assemblies will perform as originally intended to eliminate the need fot any horizontal weld integrity.
Niagara Hohawk describes and evaluates the cracks in the vertical'welds in the Unit 1 core shroud using conservative assumptions to determine their future growth potential.
The results demonstrate that the shroud is acceptable for continued operation for at least 10,600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> (about 14-1/2 months),
at which time Unit 1 will shut down for reinspection and further. evaluation.
The NRC finds that the changes to the tie rod assembly are acceptable and that the shroud is suitable in its present condition for at least this period of operation.
Enclosed is a copy of the NRC's safety evaluation report to this end.
We have discussed our findings with the State of New York and they had no comment.
Accordingly, we find that replacement of the core shroud at this time is unnecessary inasmuch as it continues to comply with codes and standards required by the Commission's regulations and is acceptable for continued service for at least 10,600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br />.
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I appreciate your interest in this matter.
Please convey my gratitude and response to the other residents that signed the petition.
Sincerely, g~z~~
Darl S.
Hood, Senior Project Manager Project Directorate I-I Division of Reactor Projects I/II Office of Nuclear Reactor Regulation Docket No. 50-220
Enclosure:
Safety Evaluation Report
I I appreciate your interest in this matter.
Please convey my gratitude and response to the other residents that signed the petition.
Sincerely,
/s/
Docket No. 50-220
Enclosure:
Safety Evaluation Report DISTRIBUTION:
Docket File PUBLIC PDI-I Reading SVarga SBajwa SLittle DHood OGC ACRS CCowgill, RI Darl S.
Hood, Senior Project Manager Project Directorate I-l Division of Reactor Projects I/II Office of Nuclear Reactor Regulation 150075 DOCUMENT NAME:
G: iNMPIiSCOTT. LTR To receive a copy of this document, indicate in the box:
"C" = Copy without attachment/enclosure "E" = Co y with attachment/enclosure "N" = No co y OFFICE PM:PDI.1 E
LA:PDI-1 D:PDI-1 NAME DATE DNood:mw 05/
/97 SLitt SBajwa 05/
/97 05/
/97 0
1cTa Recor Copy 05/
/97 05/
/97
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