ML20140C581

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Forwards Insp Rept 50-271/97-02 on 970119-0308 & Notice of Violation
ML20140C581
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 04/09/1997
From: Conte R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To: Reid D
VERMONT YANKEE NUCLEAR POWER CORP.
Shared Package
ML20140C585 List:
References
NUDOCS 9704170132
Download: ML20140C581 (3)
v • d • e


See also: IR 05000271/1997002

Text

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                                                April 9,1997
       Mr. Done'd Reid
       Vice President, Operations
       Vermont Yankee Neclear Power Corporation                                                            l
       RD 5, Box 169                                                                                       l
       Ferry Road                                                                                          I
                                                                      ~
       Brattleboro, Vermont 05301                                                                          j
                                                                                                           i
       SUBJECT:       NRC INTEGRATED INSPECTION REPORT 50-271/97-02                                        i
                      NOTICE OF VIOLATION
       Dear Mr. Reid:                                                                                      I
                                                                                                           !

, On March 8,1997, the NRC completed an inspection at your Vermont Yankee reactor l 

       facility. The enclosed report presents the results of that inspection.                              )
                                                                                                           l
       As discussed in Sectial E1.2 of the enclosed report, a root cause evaluation of the mixing
       of electrical power supply neutral and ground wires in the advanced off-gas (AOG) system
       had not been completed during the on-site inspection by a representative of the Office of           I
       Nuclear Reactor Regulations. The neutral mixing problem and other wiring error problems
       appear to be limited to the AOG system, and they do not adversely impact AOG system
       operable. However, the full extent of this wiring control problem has yet to be determined
       and resolved. Without the completed root cause analysis, we are concerned that the
       identified non-safety related neutrals and grounds wiring problem may potentially involve
       safety related systems. Upon completion of your stz f's evaluation of this issue, please
       provide us, in writing, your findings, corrective actiorm, and bar,is for assuring that those
       problems do not adversely impact safety related or important to safety systems. Also, we
       request that you provide us with a status of resolution of all of the AOG system wiring
       errors and, if not resolved, provide a date when these errors will be corrected.
       Inspector review of the November 25,1996 event involving the on-line de-energization of
       the 480V electrical bus No. 6 for preventive maintenance identified that your staff failed to
       implement the administrative control requirements for removing power supplies from
       service. This failure to implement the procedural requirements of Aoministration Procedure

, (AP)-0125 and Technical Specification 6.5 is a violation. Of particular concern to us was 

       that this evolution was previously performed durin] unit outages and that more rigorous
       reviews were not conducted prior to conducting th.s planned activity at power. We viewed
       the shift supervisor's performance es the last line of dew which failed leading to this
       event and the maintenance and planning staff's failurA as more programmatic.
       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             t
       regulatory requirements.
     9704170132 970409
                                                                              .                    _
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   Mr. Doncid Reid                                  2
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                                                                                               .
   In ac,:ordance 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,
                                                                                                       [
                                                      Richard J. Conto, Chief

' 

                                                      Reactor Pro [ects Branch 5
                                                      Division of Reactor Projects
                                                                                                       ,
   Enclosures:
   1.    Notice of Violation                                                                           i
   2.    NRC Inspection Report 50-271/97-02                                                            ;

, , 

   Docket No. 50-271
   cc w/enci:
   R. McCullough, Operating Experience Coordinator - Vermont Yankee
   R. Wanczyk, Director, Safety and Regulatory Affairs

. G. Maret, Plant Manager 

   J. Duffy, Licensing Engineer, Vermont Yankee Nuclear Power Corporation
   J. Gilroy, Director, Vermont Public interest Research Group, Inc.
   D. Tefft, Administrator, Bureau of Radiological Health, State of New Hampshire
   Chief, Safety Unit, Office of the Attorney General, Commonwealth of
      Massachusetts
   R. Gad, Esquire
   G. Bisbee, Esquire
   T. Rapone, Massachusetts Executive Office of Public Safety
   State of New Hampshire, SLO Designee

, State of Vermont, SLO Designee 

   Commonwealth of Massachusetts, SLO Designee
                                                                                                 .

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                     Mr. Donald Reid                                               3
                     Distribution w/ encl:
                     Region i Docket Room (with concurrences)
                     PUBLIC                                                                                                                           l
                     Nuclear Safety Information Center (NSIC)
!                    NRC Resident inspector
                     D. Screnci, PAO (2)
R. Conte, DRP
                     W. Axelson, DRA
                     L. Harrison, DRS
                     D. Beard, DRP
                     L. Peluso, DRS
                     D. Vito, RI, File No. 96-A0128

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                     Distribution w/enci (VIA E-MAIL):                                                                                                1
                    W. Dean, OEDO

$ V. Rooney, NRR

P. Milano, NRR

i R. Correia, NRR l D. Taylor, NRR

T. Koshy, NRR

f Inspection Program Branch, NRR (IPAS) 4 i ! 

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