ML20212A406

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Forwards Revised Pages to ERDS Data Point Library.Described Unit 2 Changes for 2R7817 & 2R7828 Were Completed on 990818 & Unit 3 Change for 3R7828 Was Completed on 990903
ML20212A406
Person / Time
Site: San Onofre  Southern California Edison icon.png
Issue date: 09/14/1999
From: Scherer A
SOUTHERN CALIFORNIA EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9909160192
Download: ML20212A406 (9)


Text

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September 14, 1999 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555

Subject:

Docket Nos. 50-361 and 50-362 Emergency Response Data System San Onofre Nuclear Ganerating Station Units 2 and 3 Gentlemen:

This letter is to inform the NRC of changes that have been made to the Emergency Response Data Systems (ERDS) at the San Onofre Nuclear Generating Station Units 2 and 3. As required by 10 CFR 50 Appendix E, Section VI.3.a, any hardware and software changes that affect the transmitted data points identified in the ERDS Data Point Library must be submitted to the NRC within 30 days after the changes are completed. Accordingly, revised pages to the ERDS Data Point Library are provided in the Enclosure to this letter.

Two points in the Unit 2 ERDS database point identifications were revised from RT7817 to R7817QCV and RT7828C to R7828GCV. Additionally, a Unit 3 ERDS database point identification was revised from RT7828C to R7828GCV. The point identification changes and name descriptor changes are being made to reflect an upgrade to the computer database for the Radiation Monitoring Data Acquisition System. The analog radiation monitors are now routed to the ERDS database by a 4

new computer system, and this new computer system has different point identification j

descriptor files (database numbering files). The ERDS database for these new descriptors is being revised so the computer system will continue to pass quarterly i

NRC ERDS testing and maintain its communication ability to link with the NRC l

Operations Center in an emergency situation when required.

The above described Unit 2 changes for 2R7817 and 2R7328 were completed on August 18,1999 and the Unit 3 change for 3R7828 was completed on September 3, 1999.

99o916o192 990914 PDR ADOCK OSC 31 J

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P. o. Box 128

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San Clemente, CA 92674-0128 k

949-368 7501 l

Fax 949 368-7575

D,ocument Control Desk 2-l If you have any questions regarding this matter, please feel free to contact me or Mr.

Jack Rainsberry at (949) 368-7420.

Sincerely, Enclosure i

cc: E. W. Merschoff, Regional Administrator, NRC Region IV L. Raghavan, NRC Project Manager, San Onofre Units 2 and 3 J. A. Sloan, NRC Senior Resident inspector, San Onofre Units 2 and 3 4

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