ML20029C230
| ML20029C230 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 03/15/1991 |
| From: | Wenzinger E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Mroczka E NORTHEAST NUCLEAR ENERGY CO. |
| Shared Package | |
| ML20029C231 | List: |
| References | |
| NUDOCS 9103270027 | |
| Download: ML20029C230 (2) | |
See also: IR 05000336/1991001
Text
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March 15, 1991
Docket No. 50-336
. Northeast Nuclear Energy Company
ATI'N: Mr. E. J. Mroczka
Senior Vice President - Nuclear
. Engineering and Operations
P.O. Box 270
Hartford, Connecticut 06141-0270
Gemlcmen:
Subject: NRC Region I Inspection No. 50-336/91-01
This letter transmits the NRC report of a routine resident inspection conducted by Mr. Peter
Habighorst of Region I on January 7 - February 16, 1991, at Millstone Unit 2.
At the
conclusion of the inspection, the findings were liscussed with Mr. J. S. Keenan and other
members of your staff.
Areas examined during the inspection are described in the enclosed report. Within these areas,
the inspection ' consisted of performance observations of ongoing activities, independent
.
,
verification of safety equipment status and design configuration, interviews with personnel, and
review of records. Overall operation of the facility was concluded to be satisfactory.
Although not. cited as a violation during this inspection, we are concerned with the poor
communications and breakdown in maintenance work controls which immediately preceded the
reactor _ trip on January 10th. While erratic operation of a main turbine EHC pump was a
contributing factor in the trip, experienced mechanics prematurely began unauthorized,
unsupervised, and unisolated replacement of a filter without an adequate pre job bricting. -We
will focus future inspection followup on these aspects which are critical to effective and safe
maintenance.
Your cooperation witn us is appreciated.
Sincerely,
Oris11 Signed By j
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Edward . Wenzinger, Chi f )
Projects Branch No. 4
Division of Reactor Projects
Enclosure: NRC Region I Inspection Report No. 50-336/91-01
OFFICIAL RECORD COPY
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cc w/encls:
W. D. Romberg, V!ce President, Nuclear Operations
D. O. Nordquist, Director of Quality Services
R. M. Kacich, Manager, Generation Facilities Licensing
S. E. Scace, Station Director, Millstone
' J. S. Keenan, Nuclear Unit Director, Millstone Unit 2
Gerald Garfield, Esquire
Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Senior Resident Inspector
State of Connecticut
bec w/encls:
Region 1 Docket Room (with concurrences)
Management Assistant, DRMA (w/o encl)
E. Kelly, DRP
J. Shediosky, SRI, Haddam Neck
W. Raymond, SRI, Millstone
K. Brockman, EDO
H. Gregg, DRS (See Section 7.1)
C. Anderson, DRS (See Section 6.1)
M. Gray, DRS (See Section 6.2)
bec w/ Report Cover Sheet and Executive Summary only:
W. Hehl, DRP
J. Wiggins, DRP
W. Hodges, DRS
W. Lanning, DRS
L. Bettenhausen, DRS
J. Durr, DRS
M. Knapp, DRSS
-R. Coop:r, DRSS
J. Joyner, DRSS
J. Stoltz, NRR/PDI-4
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