ML20065H862
| ML20065H862 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 09/28/1982 |
| From: | Wuller G ILLINOIS POWER CO. |
| To: | Thomas C Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0853, RTR-NUREG-853 U-0554, U-554, NUDOCS 8210050278 | |
| Download: ML20065H862 (2) | |
Text
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ILLINOl8 POWER COMPANY ffy 73 z99_ggy_t 500 SOUTH 27TH STREET, DECATUR, ILLINOIS 62525 September 28, 1982 Mr. Cecil 0. Thomas, Chief Standardization & Special Projects Branch Division of Licensing Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C.
20555
References:
1.
IP letter 11/17/81 (U-0329), G. S. Green to M. Tokar, NRC Core Performance Branch, 2.
IP letter 3/12/82, D. L. Holtzscher (LRG-II Chairman) to J. R. Miller, NRC.
3.
Internal NRC Memorandum, 8/19/82, L. S. Rubenstein to T. Novak, subject:
Resolution of LRG-II Channel Box Deflection Issue (LRG-II Issue 3-CPB).
4.
IP letter 3/30/82, (U-0454), G. E. Wuller to J. R. Miller, NRC; LRG-II Positions for CPS.
Dear Mr. Thomas:
Clinton Power Station Unit 1 Docket No. 50-461 Channel Box Deflection Issue The Safety Evaluation Report for the Clinton Power Station (NUREG-0853) addresses the issue of Channel Box Deflection in Section 4.2.3.13.
It is indicated there that Illinois Power will implement a program to monitor channel box deflec-tion which is based upon a multistep procedure proposed by the Zimmer Project and accepted by the Staff.
The triggering point for initiating the control rod drive friction test portion of the Zimmer program would be 30,000 Mwd /t associated fuel bundle exposure.
Illinois Power did not agree with the 30,000 Mwd /t exposure value as the trigger point and indicated, in reference (1) letter that it would work through the Licensing Review Group-(LRG-II) to justify a higher value.
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.L30-82(09-28)-L September 28, 1982 Page 2 i
Since that time LRG-II has prepared a position paper on this subject and -submitted it to the NRC via reference (2) letter.
That position paper accepts the basic Zimmer program and the 30,000. Mwd /t exposure value as the triggering i
point for-initiating control rod drive friction tests. -The LRG-II-position however, substitutes a screening-type friction i
test _in place of the settling friction test proposed in the Zimmer~ program.. The LRG-II position paper has since been l
reviewed by the NRC Staff and found acceptable as indicated
- Ln reference (3) letter.
Since Illinois Power Company is a member of.LRG-II and has incorporated the above position paper on our operating license application via reference (4) letter, we are re-questing that the above-discussed LRG-II program on the channel box deflection concern be incorporated into a' future supplement-to the'Clinton Safety Evaluation-Report as superseding i
the information contained in SER Section 4.2.3.13..
7 1
l Please contact me if you have any questions cn1 this request.
Sincerely, G. E. Wuller Supervisor-Licensing Nuclear Station Engineering GEW/DLH/lt
' Enclosure i
M. J. H. Williams, NRC Clinton Project Manager-1 r
cc:
Mr.
H.-H. Livermore, NRC Resident Inspector Illinois Dept. of Nuclear Safety s-
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