ML19254E207
| ML19254E207 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 10/22/1979 |
| From: | Dale L MISSISSIPPI POWER & LIGHT CO. |
| To: | |
| References | |
| NUDOCS 7910310320 | |
| Download: ML19254E207 (1) | |
Text
f MISSISSIPPI POWER & LIGHT COMPANY i
Helping Build Mississi pi s
P. O. B O X 16 4 0, J A C K S O N, Ml3SISSIPPI 39205 PRODUCTtON DtP&RTWENT Office of Inspection & Enforcemet.t October 22, 1979 U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 ATTENTION:
Mr. J. P. O'Reilly, Director Gentlemen:
SUBJECT:
Grand ;u'f Nuclear Station File 02/0/15525/15526 Interim Report No. 3 for PRD-79/07 As Defined in 10 CFR 50.55(e)
AECM-79/117 On March 23, 1979, Mississippi Power & Light Company notified Mr. J. K. Rausch of your office of a potential reportable deficiency at the Grand Gulf Nuclear Station Construction site.
The deficiency concerns circuit separation discrepancies found in the Unit 1 and Unit 2 Power Generation Control Complexes.
The problem specifically concerns redundant class IE wiring, Division 1 and Division 4, terminating on a common device FK-48B in panel 2H13692.
This design represents inadequate implementation of circuit separation as required by Regulatory Guide 1.75 entitled " Physical Independence of Electrical Systems."
General Electric is currently inspecting the subject paneJs for wir-ing discrepancies.
We expect to receive the inspection results from G. E. and make a determination on reportability by January 31, 1980.
Yours truly, f,
W JRF/JDR:pa L. F. Dale Nuclear Project Manager cc:
Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner Mr. Victor Stello, Jr., Director Division of Inspection & Enforcement b
U. S. Nuclear Regulatory Comission D
~5 025 Washington, D. C.
20555 O
Q Member Middle South Utilities System h