ML20236W224
| ML20236W224 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/28/1998 |
| From: | Grant G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Jeffery Wood CENTERIOR ENERGY |
| Shared Package | |
| ML20236W226 | List: |
| References | |
| 50-346-98-09, 50-346-98-9, NUDOCS 9808050161 | |
| Download: ML20236W224 (4) | |
See also: IR 05000346/1998009
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UNITED STATES
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July.28, 1998
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Mr. John K. Wood :
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Davis-Besse Nuclear Power Station
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5501 North State Route 2
Oak Harbor OH 43449
SUBJECT:
DAVIS-BESSE INSPECTION REPORT 50-346/98009(DRP) AND
' Dear Mr. Wood:
On June 23,1998, the NRC completed an inspection at your Davis-Besse site. The enclosed
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report presents the results of that inspection.
During the 6-week period covered by this inspection report, activ.ities at the Davis-Besse facility
were generally characterized by safe and conscientious operations. The restart activities
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following the refowling outage and the subsequent power reduction to repair a main feedwater
pump were carefully controlled and well coordinated. However, on two occasions, operators
performed actions without management approval when faced with unanticipated circumstances
after operator errors occurred._ Additionally, we are concemed about one violation of NRC
requirements that was identified.- Specifically, NRC inspectors identified that the design basis
requirement of preventing debris from plugging containment spray nozzles was not translated
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into the design of the emergency sump in that a design drawing permitted several unscreened
openings around the base of the sump screen enclosure. These openings, which existed since
plant construction, were larger than the screen size openings and could have allowed particles of
sufficient slee to bypass the emergency sump screen and plug containment spray nozzles.
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This violation is cited in the enclosed Notice of Violation, and the circumstances surrounding the
violation are described in detailin the enclosed report. Please note that you are required to
respond to this letter and should follow the 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.
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ADOCK 05000346
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J. Wood
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In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and its
enclosures will be placed in the NRC Public Document Room.
Sincerely,
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Geoffrey E. Grant, Director
Division of Reactor Projects
Docket No.: 50-346
License No.: NPF-3
Enclosures:
1.
2.
Inspection Report No. 50-346/98009(DRP)
cc w/encis:
J. Stetz, Senior Vice
President - Nuclear
J. Lash, Plant Manager
J. Freels, Manager
Regulatory Affairr,
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M. O'Reilly First energy
State Liaison Officer, State
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of Ohio
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- R. Owen, Ohio Department
of Health
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C. Glazer, State of Ohio
Public Utilities Commission
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- - - - - - - - - - - - - - _ - _ - - - - -
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_____ ___ _ _ _ -
_ _ _ _ - _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _
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J. Wood
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In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and its
enclosures will be placed in the NRC Public Document Room.
Sincerely,
/s/ Marc L. Dapas for
Geoffrey E. Grant, Director
Division of Reactor Projects
Docket No.: 50-346
License No.: NPF-3
Enclosures:
1.
2.
Inspection Report No. 50-346/98009(DRP)
cc w/encis:
J. Stetz, Senior Vice
President . Nuclear
J. Lash, Plant Manager
J. Freels, Manager
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Regulatory Aff&s
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M. O'Reilly, Rest energy
State Liaisor, Officer, State
of Ohio
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R. Owen, Ohio Department
of Health
C. Glazer, State of Ohio
Public Utilities Commission
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DOCUMENT NAME: G:/DAVI/DAV98009.DRP
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J. Wood
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Project Mgr., NRR w/enci
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C. Paperiello, Rill w/enci
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J. Caldwell, Rill w/end
B. Clayton, Rill w/enci
SRI Davis-Besse w/ encl
DRP w/enci
TSS w/enci
DRS (2) w/enci
Rill PRR w/enct
PUBLIC IE-01 w/enci
Docket File w/enci
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GREENS
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DOCDESK (E-Mail)
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