ML17174B100
| ML17174B100 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 12/20/1991 |
| From: | Ring M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML17174B098 | List: |
| References | |
| 50-237-91-38, 50-249-91-42, NUDOCS 9201210098 | |
| Download: ML17174B100 (1) | |
Text
NOTICE OF DEVIATION I.
.commonwealth Edison Company Dresden Power station
- units 2 and*J Docket Nos.: 50-237; 50-249 Licens~ Nos.: DPR-19; DPR-~5 During an NRC inspection conducted December 2 tbrough 6, 1991, a deviation of your Final Safety Analysis Report (FSAR) was
.identified.* In accordance with the "General Statement of Policy and Procedure for NRC Enforcement Action, ii 10 CFR Part 2, Append.ix.c (1991), *the deviation Js listed below:
- FSAR Section a.2.2.2 states, in part; that all protective circuit bieakers are sized according to standard el~ctrical industry practice.whererilaximtim current interrupting capabilities of circuit breakers exceed the available line-to-line or *three (3) phase short circuit current takihg into account the impedance of
.the generator, transformer arid other electrical system components.
Contrary to the above, as.of December 6, 1991, breakers in the 4kV system were sized such that a fault current condition could exceed their ~aximtim current interrupting ~ap~bility by up to 14 percerit.
- Please provide to the u.s. Nuclear Regulatory Commission, ATTN:
Document Control Desk, Washington, D.C. 20555, with a copy to the Regional Administrator, Region III, and a copy to the NRC Resident Inspector.at the facility that is the subject of. this Notice, in writing within 30 days of the date of this Notice, the
- reason for*the deviation, the corrective steps which have been taken and the results achieved, the corrective steps which will be taken to avoid further deviations, and the date when your 6oriective a6tion will.be completed.
Where good cause is shown, consideraiion will b~ given to extending the response time.
Dated attplen Ellyn, Illinois this.'[_,o ;:-
- day of 1/e.L-
, 1991
- )_ - -------.----"-'
Mari A. Ring,/ Chief Engineering Branch