U-600840, Advises of Change in Compliance W/Reg Guide 1.45 Re Leak Detection Sys,Per Util Describing Revs to Facility Fsar.Fsar Rev Will Be Implemented in Next Update
| ML20210T731 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 02/16/1987 |
| From: | Spangenberg F ILLINOIS POWER CO. |
| To: | Butler W Office of Nuclear Reactor Regulation |
| References | |
| RTR-REGGD-01.045, RTR-REGGD-1.045 U-600840, NUDOCS 8702180289 | |
| Download: ML20210T731 (2) | |
Text
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. ILLIN018 POWER COMPANY CLINTON POWER STATION. P.o. Box 678 CUNTON. ILLINolS 61727 February 16, 1987
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Docket' No.150-461 h.
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Director of Nuclear Reactor Regulation 9-
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Attention: 'Dr. W. R. Butler, Director BWR Project' Directorate No. 4 i
Division of BWR Licensing:
U U.S.. Nuclear Regulatory Commission i
Washington, D.C.
20555 lI
Subject:
Clinton Power Station 7
Revision to the CPS FSAR Concerning 1
j Change'in Compliance of Leak Detection System to Regulatory Guide 1.45 L
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Dear Dr. Butler:
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On January 12,' 1987, Illinois Power Company (IP) ' submitted a letter
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(U-600809) describing revisions to the Clinton Power Station Final _ Safety' y'
Analysis Report (FSAR). The purpose of this letter.is.to inform the NRC i
of a change to the information submitted in the above. referenced letter..
This revision has been discussed with your Messrs.J. Ridgely and B.
Siegel.
y t-Regulatory Guide 1.45, " Reactor Coolant Pressure Boundary Leakage 1,n Detection Systems," states that the source of reactor coolant-leakage
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should be identifiable to the extent practical. Leakage detection and
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collection systems should be selected and designed according to Position -
C.5, such that leakage to the containment building from unidentified' sources should be collected and the flow monitored with an accuracy of 1 l
gallon per minute in one hour (gpm/hr.), or better, i
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In Section 5.2.5.10 of the CPS FSAR, " Regulatory Guide 1.45 i
Compliance," IP commits to comply with Regulatory Guide 1.45 and describes-j the details of that compliance. In the Clinton Safety Evaluation Report j
(SER), Section 5.2.5, the NRC finds the Clinton compliance to Regulatory.
i Guide 1.45 acceptable and Item (5) of 'the SER states, "The sensitivity and j
response time of the systems... for the detection of unidentified..
3 leakage are adequate to detect a leakage rate ofL1-spa in less than 1 j
hour." The Leak' Detection System will comply with Regulatory Guide 1.45 as currently specified in the FSAR, except that the'drywell. atmospheric particulate and gaseous radioactivity monitoring systems'are not capable' j
of measuring a' leakage rate of 1 gpm within an hour, as. required by Position C.5 of Regulatory Guide 1.45.
Therefore, the airborne j
radioactivity monitoring systems will be considered as a secondary j
detection method, along with the monitoring of pressure and temperature, j
to detect gross unidentified leakage, pi '
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8702180289 870216 PDR ADOCK 05000461 P
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'U-600840 e
L30-87 ( 02-16)-L 1A.120 Section 5.2.5.1, 5.2.5.2 and 5.2.5.10 as well as the Project Position of Regulatory Guide 1.45 in Section 1.8 of the CPS FSAR, will be revised to reflect these changes (including a detailed description of limitations.
of the airborne radioactivity monitoring system).
In accordance with discussions held with your Messrs. J. Ridgely and B. Siegel, appropriate changes to the Clinton Power. Station Technical Specifications (similar to those changes approved for use at Limmerick Units 1 and 2) will be submitted for your review / approval and issuance with the full power operating license.
The FSAR revision will be implemented in the next update of the FSAR.
Sincerely yours, e.g cs 3
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F. A. Spa genb' g
Manager - Licensing and Safety TLR/bsa ec:
Mr. B. L. Siegel, NRC Clinton Licensing Project Manager NRC Resident Office Region Administrator, Region III, USNRC Illinois Department of Nuclear Safety
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