ML20236P962
| ML20236P962 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 07/10/1998 |
| From: | Wiggins J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Maret G VERMONT YANKEE NUCLEAR POWER CORP. |
| Shared Package | |
| ML20236P964 | List: |
| References | |
| 50-271-98-09, 50-271-98-9, NUDOCS 9807170224 | |
| Download: ML20236P962 (3) | |
See also: IR 05000271/1998009
Text
Mr. Gregory A. Maret
!
Director of Operations
'
Vermont Yankee Nuclear Power Corporation
RD 5, Box 169
Ferry Road
Brattleboro, Vermont 05301
SUBJECT:
NRC SPECIAL INSPECTION REPORT 50-271/98-09 AND NOTICE OF
VIOLATION
Dear Mr. Maret:
From June 9-19,1998, the NRC conducted a special inspection at the Vermont Yankee
facility to evaluate the personnel actions and equipment response associated with an event
of June 9,1998,in which there was a reactor vessel high water level turbine trip and
reactor scram followed by an electrical transient about an hour later.
Overall crew performance was acceptable with some shortcomings noted surrounding the
circumstances of the electrical transient event. The team found your review of these
events effective and timely with some exceptions noted. Your review was sufficient to
identify causes of the reactor trip and the electrical transient and provide adequate
corrective actions to support a safe restart of the unit. However, deficiencies exist
regarding the thoroughness of your review on electrical bus 1 overcurrent relay calibration
setpoints.
Based on the results of this inspection, the NRC has determined that tvio widns of NRC
requirements occurred. The violations are cited in the enclosed Notice of Violation (Notice)
and the circumstances surrounding it are described in the report. The first deals with two
examples of inadequate procedures for operation of the reactor feedwater pumps and for
re-energizing electrical bus 6. This violation is of concern because there was a challenge
to safety systems, i.e., in one instance, the 4160 v safety bus 3 was deenergized and, in
the second instance, primsry containment isolation occurred. The second violation deals
with inadequate corrective action for deficiencies found during protective relay calibration.
I
Please note that you are required to respond to this letter and should follow the
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instructions specified in the enclosed Notice when preparing your response. The NRC will
.
use your response, in part, to determine whether further enforcement action is necessary
to ensure compliance with regulatory requirements.
0\\
The cesponse directed by this letter and the enclosed Notice are not subject to the
clearm= procedures of the Office of Management and Budget as required by the
-
PaperwoA P.cduction Act of 1980, Pub. L. No.96-511.
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9807170224 980710
ADOCK 05000271
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Mr. Gregory A. Maret
2
In accordance with 10 CFR 2.790 of the NRC's " Rules of Practices," a copy of this letter
and the enclosed Notice will be placed in the NRC Public Document Room.
Sincerely,
James T. Wiggins, Chief
Division of Reactor Safety
Docket No. 50-271
Enclosure: NRC Specialinspection Report 50-271/98-09and Notice of Violation
cc w/enci:
R. McCullough, Operating Experience Coordinator - Vermont Yankee
G. Sen, Licensing Manager, Vermont Yankee Nuclear Power Corporation
D. Rapaport, Director, Vermont Public Interest Research Group, Inc.
D. Teift, Administrator, Bureau of Radiological Health, State of New Hampshire
Chief, Eafety Unit, Office of the Attorney General, Commonwealth of Massachusetts
D. Lewis, Esquire
G. Bisbee, Esquire
J. Block, Esquire
T. Rapone, Massachusetts Executive Office of Public Safety
D. Katz, Citizens Awareness Network (CAN)
M. Daley, New England Coalition cn Nuclear Pollution, Inc. (NECNP)
State of New Hampshire, SLO Designee
State of Vermont, SLO Designee
Commonwealth of Massachusetts, SLO Designee
_ _ ______ _ _ -
.,
,
Mr. Gregory A. Maret
3
Distribution w/ encl:
Region i Docket Room (with concurrences)
PUBLIC
Nuclear Safety Information Center (NSIC)
NRC Resident inspector
H. Miller, RA/W. Axelson, DRA (1)
D. Screnci, PAO
J. Wiggins, DRS
L. Nicholson, DRS
R. Conte, DRS
J. Shediosky, DRS
G. Morris, DRS
0. Cowgill, DRP
R. Summers, DRP
C. O'Daniell, DRP
R. Nimitz, DRS
DRS File
Distribution w/enci (VIA E-MAIL):
I
B. McCabe, OEDO
C. Thomas, NRR (COT)
R. Croteau, NRR
3
R. Correia, NRR
F. Talbot, NRR
inspection Program Branch, NRR (IPAS)
DOCDESK
. DOCUMENT NAME: g:\\olhp\\ conte \\vy9809. ins
T3 receive a copy of this document. Indicate in the box: 'C' = Copy without attachment / enclosure
'E' = Copy with attachment / enclosure
'N' = No
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OFFICE
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NAME
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JTWiggins
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DATE
07/06/98
07q /98
07/ 9 98
07/ /98
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OFFICIAL RECORD COPY
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