ML20246A565
| ML20246A565 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 07/31/1989 |
| From: | Chrzanowski R COMMONWEALTH EDISON CO. |
| To: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 8908230019 | |
| Download: ML20246A565 (2) | |
Text
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- Address Reply to: Post Office Box 76T
.4 72 West Adams Street, C%go, lllinois
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. Chicago, Illinois 60690 0767 4
- July 31, 1989 f
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' Mr.-A.'Bert' Davis
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Regional: Administrator Region'III U.'S. Nuclear Regulatory Commission
- 799 Roosevelt Road Glen Ellyn,-ILi 60137 li._
Subject:
Byron Stat. ion Units 1 and 2 Additional.Information Regarding Safeguards Inspection Report
'50-454/89008'and 50-455/89011
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NRC Docket Nos.' 50-454/455 References. (a) April 24,1 1989, letter from L.-R. Gregor to Cordell Reed (b) May 26, 1989, letter from T. J. Kovach to.
A. B.-Davis Dear Mr.' Davis Reference (a) provided the results of a routine Safeguards Inspection at Byron Station conducted by Mr. G. L. Pirtle_.on' March 27 through April 3, 1989. Reference (b) provided Commonwealth Edison's response'to the inspection report. As described in reference (b), Attachment A'to.this letter providesz the additional information regarding the reduction of communication alarms.
Please direct any questions regarding this matter to this office.
Very truly yours, R.p.Chrzanowski Nuclear Licensing Administrator
. RAC/Im cc: Byron Resident Inspector I
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ATTACIMENT A OPEN ITEM 454/89008-04 AND 455/89011-04 On June 7, 1989, a meeting has held with Security, Maintenance, and Process Computer Systems in order to identify an approach to resolving communication alarm issues.
The root cause for the majority of the communication alarms is directly linked to card reader malfunctions.
In an attempt to reduce these malfunctions, the following acitons have or will take place by the following dates:
- 1) The Instrument Maintenance and Operational Analysis Departments have developed an on-site computer simulator to test card readers ut. der plant conditions. This simulator will be used in conjhetion with present test equipment to identify card reader problems and ensure they are properly repaired.
- 2) The Station will develop a list of individual parts / components needed to repair the card readers.
Expected completion:
9/29/89
- 3) Any necessary parts /compcnents not currently in the inventory at Byron Station will be ordered.
Expected completion:
10/6/89 Items 2) and 3) are required since Byron Station intends to repair cardreaders on site rather than contracting repairs to a vendor.
In addition, the station will test new cardreaders when they are received on site. This will ensure that new cardreaders function properly when installed, and thus reduce the number of communication alarms.
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