IR 05000245/1987022
| ML20236S677 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 11/24/1987 |
| From: | Bettenhausen L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Mroczka E NORTHEAST NUCLEAR ENERGY CO. |
| Shared Package | |
| ML20236S679 | List: |
| References | |
| NUDOCS 8711300030 | |
| Download: ML20236S677 (2) | |
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NOV 2 4 ha
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Docket / License:
50-423/NPF-49 Northeast Nuclear Er,ergy Company ATTN:
Mr. Edward J. Mroczka Senior Vice President, Nuclear Engineertrg and Operations P.O. Box 270 H&rtford, Connecticut 06101-0270 Gentlemen:
Subject:
Millstone 3 Routine Inspection 50-423/87-21 (9/22/87-11/2/87)
This refers to above subject the routine resident safety inspection of Millstone Nuclear Power Station, Unit 3.
The results of the inspection are described in the NRC Region I Inspection Report enclosed with this letter and were discussed with Mr. C. H. Clement of your staff at the conclusion of the inspection.
No notices of violation are being forwarded with the enclosed report and no reply to this letter is required. The security events in detail 3.2 of the enclosed report are, however, being separately addressed in conjunction with i
the physical security findings ir, Inspection Report 50-245/87-22; 50-336/87-20; I
50-423/87-18.
Detail 9 of the enclosed report updates the NRC review of unnecessary control
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room annunciations at Millstone 3.
For the radiation monitoring system (RMS),
it was noted that 10-50 annunciations per hour are received during power operation.
In one case, as documented in Report Detail 6.1, a high radiation
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level was masked by other, nuisance alarms. Also, the operating staff has
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acknowledged that nuisance alarms adversely impact on operator attention to valid alarms. We therefore recommend increased attention to effective elimination of nuisance alarms.
Your cooperation with us is appreciated.
Sincerely, Lee H. Bettenhausen, Chief Projects Branch No. 3 Division of Reactor Projects Enclosure:
NRC egion I Inspection Report 50-423/87-21
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8711300030 871394 DR ADOCK 05000423 ICIAL RECORD COPY 1R MILL 3 87-21 - 0001.0.0 PDR 11/23/87 i
$ 6C/ s g
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NOV 2 41987-2-
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cc w/ encl:
Mr. W. D. Romberg, Vice President, Nuclear Operations Mr. S. E. Scace, Station Superintendent Mr. E. R. Foster, Director, Generation Construction Mr. R. M. Kacich, Manager, Generation Facilities Licensing Mr. D. O. Nordquist, Director of Quality Services Mr. V. Papadopoli, Supervisor, Engineering Assurance'
Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Senior Resident Inspector State of Connecticut bcc w/ encl:
Region I Docket Room (with concurrences)
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Management Assistant, DRMA (w/o enclosures)
DRP Section Chief B. Ferguson, LPM, NRR Robert J. Bores, DRSS A. Shropshire, RI (See Detail 10.0)
M. Shanbaky, DRSS)
J. Joyner, DRSS (See Detail 3.2)
l R. Summers, DRP D. Holody, RI
RI:DRP@ib
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RI:DRP P
E Raymond/mlb McCabe Bettenhausen 11/9/87 11/9 /87 11R'//87 0FFICIAL RECORD COPY IR MILL 3 87-21 - 0002.0.0 11/23/87
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