ML20059A343
| ML20059A343 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 12/17/1993 |
| From: | Durr J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Opeka J NORTHEAST NUCLEAR ENERGY CO. |
| Shared Package | |
| ML20059A347 | List: |
| References | |
| GL-89-10, NUDOCS 9312300116 | |
| Download: ML20059A343 (3) | |
See also: IR 05000245/1993026
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DEC I71993
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Docket Nos. 50-245
50-336
50-423
Mr. John F. Opeka
Executive Vice President - Nuclear
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Northeast Nuclear Energy Company
. P. O. Box 270
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Hartford, Connecticut 06141-0270
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Dear Mr. Opeka:
SUBJECT:
COMBINED INSPECTION REPORT NOS. 50-245/93-26, 50-336/93-22,
AND 50-423/93-21
I
This letter refers to the announced safety inspection conducted by Mr. J. Stewart and others
of this office from August 30 to September 3,1993. The inspectors reviewed the programs
being implemented in response to NRC Generic Letter 89-10, " Safety-Related Motor-
Operated Valve Testing and Surveillance." This generic letter and its supplements provided
guidelines to ensure motor-operated valves would be functional during design basis accident
conditions thereby protecting the health and safety of the public. At the conclusion of the
on-site inspection, the results were discussed with Mr. F. Dacimo and others of the Millstone
station. Additional information was obtained after the on-site inspection and the inspection
concluded on December 15,1993, with a review of the status of the findings as detailed in
the report.
During the inspection, your staff determined that the Millstone Unit 2 power operated relief
block valves would not isolate a design basis failure of the power operated relief valves.
This determination was made using preliminary data from EPRI sponsored valve testing.
Although the determination that the block valve capability was outside the design basis for
the system, the NRC is refraining from issuing a notice of violation because among other
items, your actions to evaluate the valve capability using preliminary data is considered
prudent.
This letter also refers to the presentation by your staff regarding your self-assessment of the
Northeast Utilities Motor-Operated Valve Program. 'niis presentation was held in the NRC
Region I office on September 28,1993, and the handout provided by your staff is included as
Enclosure 2 to this letter. We have found this assessment to be comprehensive and of high
quality. Weaknesses identified during the assessment were significant to the satisfactory
completion of the generic letter program and were being corrected at the time of our
inspection. We request your continued attention for the timely and effective disposition of
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these weaknesses. We intend to review these corrective actions in future inspections.
9312300116 931217
ADOCK 05000245
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Northeast Nuclear Energy
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In accordance with 10 CFR 2.790, a copy of this letter and its enclosures will be placed in
the NRC Public Document Room.
Sincerely,
crictual m a s Ly;
Jacque P. Durr, Chief
Engineering Branch
Division of Reactor Safety
Enclosures:
1. NRC Inspection Report Nos. 50-245/93-26,50-336/93-22 and 50-423/93-21.
2. Handout provided by NNECo at September 28,1993, meeting.
cc w/ encl:
W. D. Romberg, Vice President - Nuclear, Operations Services
S. E. Scace, Vice President, Millstone Station
J. P. Stetz, Vice President, Haddam Neck Plant
H. F. Haynes, Nuclear Unit Director
G. Bouchard, Nuclear Unit Director
F. R. Dacimo, Nuclear Unit Director
R. M. Kacich, Director, Nuclear Licensing
J. Solymossy, Director, Nuclear Quality and Assessment Services
Gerald Garfield, Esquire
Nicholas Reynolds, Esquire
K. Abraham, PAO (2)
Public Document Room (PDR)
local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector
State of Connecticut SLO
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DEC I 71993
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Northeast Nuclear Energy
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Company
bec w/ encl:
Region I Docket Room (with concurrences)
bec w/enci (VIA E-MAIL):
J. Stolz, NRR/PD I-4
V. McCree, OEDO
J. Andersen, NRR
T. Scarbrough, NRR
C. Casto, RII
J. Jacobson, RIII
T. Westerman, RIV
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OFFICIAL RECORD COPY
A: MIL 9326. INS