ML20210H930
| ML20210H930 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 08/08/1997 |
| From: | Kraft E COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ESK-97-156, NUDOCS 9708140244 | |
| Download: ML20210H930 (2) | |
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( uninuinwv.ao. I awn rumiun, Qu.ad Latir$ &ncuting station m m 2mdustnuc Mrth Cordin t II. 612 6 2 9' 40 ici Sm s i 22 o ESK-97-156
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August 8,1997 United States Nuclear Regulatory Commission Washington, D. C. 20555-0001
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Attention:
Document Control Desk
Subject:
Quad Cities Nuclear Power Station Units I and 2 Status of Diagnostie Evaluation T eam (DET)
Material Condition Improvements 3
NRC Docket Numhers 50-254 and 50-265
)
Reference:
(a) J. J. O' Conner to J. Taylcr letter concerning DET Response dated g;
'w December 30,1993.
.l (b) E. S. Kran, Jr. to USNRC letter (ESK-96-197) concerning Status of DET Improvements dated October 30,1996.
(c) E. S. Kran, Jr. to USNRC letter (ESK-97-Il7) concerning Status of DET 1mprovements dated June 19,1997.
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In reference (a), Quad Cities provided plans and actions to improve the material conditicn of the plant, which included replacement of the Source Range Monitoring (SRM) and Intermediate Range Monitoring (IRM) cables. In reference (b), the status of) those action plans were provided. At that time, I committed to replace the SRM/lRM / g1 cables on iJnit 2 during the Q2R!4 refueling outage. In reference (c), I reported that these cables were not replaced during the Q2R14 refueling outage and stated that an evaluation to determine our future plans concerning replacement of the SRM and IRM cables on Unit 2 would be completed.
,i f 1 " '" 9 9708140244 970808 PDR ADOCK 05000254 P
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U.' S. NRC ESK-97-156 2
August 8,1997.
Since 1993, several actions have been taken on both Unit I and Unit 2 to address the spiking problem, items such as the replacement of the under vessel connectors, improved detector and connector maintenance, improved testing techniques and replacement of preamplifiers. These measures have proven effective in reducing the spiking problems associated with the SRM/lRMs. During QlR14 the SRM/IRM cables were replaced. The replacement cables have not resulted in a quantifiable improvement in the reduction of spiking.
Therefore, we do not intend to install the SRM/lRM cables on Unit 2 as committed to in Reference A. It is our intent to continue monitoring these problems and to take appropriate steps to ensure spiking is minimized.
If yeu have any questions concerning this letter, please contact Mr. Charles Peterson, Regulatory Affairs Manager, at (309) 654-2241, extension 3609.
Respectfully, S
- /6t /
E. S. Kraft Jr.
Site Vice President Quad Cities Station cc:
A. B. Heach, Regional Administrator, Region III R. M. Pulsifer, Project Manager, NRR C. G.. Miller, Senior Resident Inspector, Quad Cities W. D. Leech, MidAmerican Energy Company D. C. Tubbs, MidAmerican Energy Company F. A. Spangenberg, Regulatory Affairs Manager, Dresden INPO Records Center OfTice of Nuclear Facility Safety, IDNS DCD License (both electronic ana hard copies)
M. E. Wagner, Licensing, Comed
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