ML20196H052
| ML20196H052 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 07/18/1997 |
| From: | Subalusky W COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-89-13, NUDOCS 9707230299 | |
| Download: ML20196H052 (2) | |
Text
-.
_..__m Commonw calth lilison Company
. l2Salle Generating Station
,d W 2601 North 21st Road o
Marxiues ll.61341-9757 Tcl H15-35%%I 4
July 18,1997 i-United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 i
Subject:
LaSalle County Nuclear Power Station Units 1 and 2 Service Water System Problems Affecting Safety-Related Equipment. (Supplemental Response to 3
NRC Docket Nos. 50-373 and 50-374
References:
1.
W. Subalusky letter to A. Beach, dated January 13,1997, Status of LaSalle County l
Station 2.
J. Lockwood letter to U. S. NRC, dated May 18,1994, LaSalle letter Regarding Service Water System Problems Affecting Safety-Related Equipment. (Supplemental Response to NRC i
Generic Letter 89-13) i As discussed in the Reference (1) letter, LaSalle County Station has been l
performing system functional performance reviews (SFPR) of systems l
important to. safe and reliable operations to identify any deficiencies that may i
' need correction prior to startup. ' As part of that review, LaSalle County Station has identified some errors in a letter that was previously submitted to the NRC. The purpose of this letter is to inform the NRC of the appropriate corrections.
Reference (2) provided an update on LaSalle County Station's actions pertaining to NRC Generic Letter 89-13 with regard to Residual Heat Removal (RHR) heat exchanger testing. Reference (2) stated that the "1 A". RHR heat exchanger has had 3 heat transfer tests without any cleaning between tests and all have passed. During the SFPR it has been determined that one of the tests for the "1 A" RHR heat exchanger did not pass. Reference (2) also stated that the "2B" RHR heat exchanger had 3 tests without cleaning and all have passed. During the SFPR 11 was determined that hydrolazing (cleaning) was performed once in between tests for the "2B" RHR heat exchanger. Reference (2) also stated that the "1B" RHR heat exchanger had two heat transfer tests that both passed 6l9 without cleaning between them.
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t During the SFPR it was determined that the "1B" RHR heat exchanger was
' tested three times and that hydrolazing (cleaning) was performed once in i
between tests for the "1B" RHR heat exchanger. This information was provided in Reference (2) as the basis for no longer performing heat transfer testing of the heat exchangers.
As a result of the system functional reviews, GL 89-13 is being reevaluated, and certain plant activities that address lho Generic Letter will be revised (NTS #373-104-89-01314). Elements of the revision willinclude heat exchanger performance monitoring, eddy current testing and trending of key system performance indicators. Program elements important to the assurance of system functionality and operability will be implemented prior to restart of the units.
If there are any questions or comments concerning this letter, please refer them to Perry Barnes, Regulatory Assurance Supervisor at (815) 357-6761, extension 2383.
Respectfully, W. T. Subalusky Site Vice Presiden LaSalle County Station ec:
A. B. Beach, NRC Region lli Administrator M. P. Huber, NRC Senior Resident Inspector - LaSalle D. M. Skay, Project Manager - NRR - LaSalle F. Niziolek, Office of Nuclear Facility Safety - IDNS
,