ML19324B516
| ML19324B516 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 10/30/1989 |
| From: | Richter M COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 0296K, 296K, GL-89-16, NUDOCS 8911070029 | |
| Download: ML19324B516 (2) | |
Text
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i 72 West Adams Street. Chicago, Ilhnois
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Y Chicago, Ilknois 60690 0767 -
L, October 30, 1989 V
i-U.S'. Nuclear' Regulatory Commission ATTH:~ Document Control Desk I
Washington, D.C.
.20555 t
Subject:
Quad Cities Station Units 1 and 2 i
Response.to Generic Letter 89-16 NRC Docket Nos. 50-254/265
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Reference:
Generic Letter 89-16, Installation of a Hardened Hetwell Vent, dc.ted September 1, 1989.
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Dear Str:
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The referenced Generic Letter informed the licensees of Bolling. Hater Reactor (BWR) plants with Mark I containments of the NRC program for li disposition of the issues related to the Mark I Containment Performance Improvement Program.- The Generic Letter encouraged licensees to voluntarily insta11'aihardened vent under the provision of 10 CFR 50.59, and requested i
l that. licensees provide notification of their plans for this issue.
This l
1etter provides Commonwealth Edison's (Edison's) response to that request.
l SE'CY.89-017 indicates that the primary benefit of the hardened vent is'the reduction of risk associated with the 1H (loss of decay heat removal) t sequence.. To address this TH sequence issue, it is Edison's intent-to provide I
a hardened vent at Quad Cities Station Units 1 and 2.
Edison is participating I
with the BNR Owners'-Group (BHROG) in the development of generic design I
criteria for the hardened vent.
It is anticipated that the BNROG will provide this design criteria by. April 30, 1990, for NRC review.
Plant specific design features will be developed subsequent to formulation of the generic design criteria in accorde.nce with the'10 CFR 50.59 process to ensure system interaction issues are addressed.
The hardened vent will be provided for Quad Cities Station Units 1 and 2 by January 1, 1993.
1 1
Edison will be performing an Individual Plant Examination (IPE) for Quad Cities Station to fulfill the requirements of Generic Letter 88-20, with an expected completion date of June 1993.
Upon completion of this IPE, a review of its results may identify additional design and operational considerations specific to Quad Cities Station with respect to the hardened vent.
g0k 0296k:4 0911070029 891030 ADOCK0500g4 DR
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U.S. NRC October 30, 1989 It is Edison's understanding that the provision of the hardened vent will make a significant contribution to closing the NRC's Mark I Containment Performance Improvement Program.
Please direct any questions that you may have concerning this response to this office.
Respectfully, fYY.
1 M.H. Richter Generic Issues Administrator cc:
A.B. Davis - Regional Administrator, Region III Resident Inspector - Quad Cities t
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