ML20217N307: Difference between revisions

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{{Adams
#REDIRECT [[IR 05000321/1998001]]
| number = ML20217N307
| issue date = 04/21/1998
| title = Discusses Insp Repts 50-321/98-01 & 50-366/98-01 Issued on 980420 & Informs That NRC Determined That Violation of NRC Requirements Occurred.Violation Resulted in Mcrec Sys Not Being Able to Perform Intended Safety Function
| author name = Reyes L
| author affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
| addressee name = Sumner H
| addressee affiliation = SOUTHERN NUCLEAR OPERATING CO.
| docket = 05000321, 05000366
| license number =
| contact person =
| document report number = 50-321-98-01, 50-321-98-1, 50-366-98-01, 50-366-98-1, EA-98-209, NUDOCS 9805050287
| document type = CORRESPONDENCE-LETTERS, OUTGOING CORRESPONDENCE
| page count = 5
}}
See also: [[see also::IR 05000321/1998001]]
 
=Text=
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                                          April 21.1998
        Southern Nuclear Operating Company. Inc.
        ATTN: Mr. H. L. Sumner. Jr.
                    Vice President. Hatch Plant
                    Nuclear Operations
        P.O. Box 1295
        Birmingham AL 35201
        SUBJECT:      EXERCISE OF ENFORCEMENT DISCRETION
t
                      (NRC INTEGRATED INSPECTION REPORT 50-321/98-01. 50-366/98-01)
        Dear Mr. Sumner:
        On March 21. 1998, the Nuclear Regulatory Commission (NRC) completed an
        inspection at your Hatch facility. The results of that inspection were
        discussed at an exit meeting conducted on March 27. 1998. and documented in
        NRC Inspection Report No. 50-321/98-01. 50-366/98-01 issued on
        April 20.1998.
        During the inspection, the NRC examined an issue related to the Main Control
        Room Environmental Control (MCREC) system. On February 16. your staff
        identified that a tem 3erature switch was not installed on each of the two
        MCREC trains. On eac1 MCREC filter train, the missing temperature switch left
        an approximately one-half inch diameter hole that was open to a conduit
        containing the wiring for each missing temperature switch. The holes left by
'
        the missing temperature switches allowed bypass flow to enter the control room
        without filtration by charcoal filters installed in the affected MCREC filter
        trains. The design basis of the plant includes limiting thyroid dose to
        control room personnel to less than 30 Rem during and following a design basis
        accident. As documented in NRC Inspection Report No. 50-321/98-01.
        50-366/98-01. and in your Licensee Event Report 50-321/98-001. Inoperable
        MCREC System Filter Trains Result in Entry Into LCO 3.0.3. dated March 18.
        1998. with the charcoal filters in both MCREC trains bypassed as a result of
l      the openings created by the missing temperature switches. the thyroid dose            I
        received by control room personnel would have exceeded 30 Rem in the event of
,
        a design basis accident.
        Based on the information developed during the inspection. the NRC has
;        determined that a violation of NRC requirements occurred. 10 CFR 50
        Appendix B. Criterion III. Design Control, requires that measures shall he
'
        established to verify the adequacy of design, such as by design reviews,
        alternate or simplified calculational methods, or suitable testing.    In this
        case. the requirements of Appendix B. Criterion III. were not met because
        measures were not established to verify the adequacy of the as-installed MCREC        ,
        system filter tr.in d a ign. This violation resulted in the MCREC system not
        being able to pe:Torm its intended safety function under certain design basis      !
                                                                                              l
        conditions A violctirm involving a safety-related system which is unable to
        perform its intended safety function under certain conditions is generally      )
                                      ~
      98050502a7 980421
      PDR      ADOCK 05000321
      G                    PDR                                                                {
                                                                                        .1?O!
 
  . -
            .
    SNC                                      2
    characterized as a Severity Level III violation in accordance with the
      " General Statement of Policy and Procedures for Enforcement Actions"
      (Enforcement Policy). NUREG-1600. However, as provided in Section VII.B.3 of
    the Enforcement Policy, the NRC may refrain from issuing a Notice of Violation
      (Notice) and proposing a civil penalty for a Severity Level III violation
    which involves old design issues.
    After review of this violation and consultation with the Director Office of
      Enforcement, the NRC has concluded that while a violation did occur,
    enforcement discretion is warranted end issuance of a Notice is not
      appropriate in this case. The specific bases for the decision to exercise
    enforcement discretion are: (1) your staff identified the deficiency during
      planned testing and calibration of the MCREC filter trains, when a special
    effort was made to remove the charcoal filter beds out of Josition to look
      behind a portion of the system that was not easily accessi)le: (2) you
    promptly declared both MCREC system filter trains inoperable and entered the
      required action statement of Technical Specification (TS) 3.0.3: (3) as part
    of your immediate corrective actions, the Standby Gas Trer.tment Systems for
      both units, which have a similar configuration as the MCREC system, were
      verified to have no missing temperature switches: (4) you promptly implemented
      an appropriate temporary modification for each MCREC system filter train in
      accordance with plant procedures, and exited TS 3.0.3: (5) the temporary
    modification for each train was removed and a temperature switch for each
      train was installed and properly tested in accordance with plant procedures:
      (6) the deficiency is considered an old design issue, was not likely to be
      identified through routine licensee efforts, and is not reflective of current
      licensee performance: and (7) the issue was reported to the NRC in Licensee
,
      Event Report 50-321/98-001. Inoperable MCREC System Filter Trains Result in
      Entry Into LCO 3.0.3, dated March 18, 1998.
    This letter closes apparent violation EEI 50-321,366/98-01-08, and no formal
      response to the apparent violation is recuired. NRC's final evaluation of
    your corrective actions will be addressec during the review and closeout of
    -LER 50-321/98-001.
                                    *
!                                .
i    In accordance with 10.CER 2.790 of the NRC's " Rules of Proctice " a copy of
I    this letter will be'pbiced in the NRC Public Document Room.
                                *
                        .
                                            Sincerely.
                            %
                                            Original Signed by L.  A. Reyes
                                            Luis A. Reyes
                                            Regional Administrator
      Docket Nos.      50-321 and 50-366
      License Nos..        DPR-57 and NPF-5
      cc: see Page 3
 
      T
    ,  -
                .
          SNC                                  3
          cc:
        . J. D. Woodard
          Executive Vice President
          Southern Nuclear Operating Co., Inc.
          P.. 0. Box 1295
          Birmingham AL' 35201-1295
          Mr. P. H. Wells
          General Manager. Hatch
          Southern Nuclear Operating Co., Inc.
;        U.S Highway 1 North
          P. O. Box 2010
-
l        Baxley, GA 31515
          D. M. Crowe
;        Manager Licensing - Hatch
l        Southern Nuclear Operating Co., Inc.
;        P. O. Box 1295
          Birmingham AL 35201-1295
          Ernest L. Blake. Esq.
          Shaw. Pittman. Potts and
            Trowbridge
          2300 N Street. NW
  -
          Washington, D. C.  20037              j
          Charles H. Badger
          Office of Planning and Budget
          Room 610
          270 Washington Street. SW
          Atlanta, GA 30334
!        Harold Reheis. Director
          Department of Natural Resources
          205 Butler Street. SE. Suite 1252
          Atlanta, GA 30334
I        Thomas Hill Manager
l        Radioactive Materials Program
i        Department of Natural Resources        !
l
          4244 International Parkway              1
          Suite 114
          Atlanta. GA 30354                      ;
          Chairman
                                                !
          Appling County Commissioners
          County Courthouse                      1
          Baxley. GA 31513
 
    .,
      --
  .            .
l
        SNC                                4
i
!
        cc:  Continued
        R. D. Barker
        Program Manager
i
        Fossil & Nuclear Operations
i        Oglethor3e Power Corporation
:        2100 E. Exchange Place
!        Tucker, GA 30085-1349
        Charles A. Patrizia. Esq.
        Paul    Hastings, Janofsky & Walker
        10th Floor
          1299 Pennsylvania Avenue
        Washington, D. C. 20004-9500
,        Steven M. Jackson
        Senior Engineer - Power Supply
i        Municipal Electric Authority
            of Georgia
~
.
          1470 Riveredge Parkway NW
l        Atlanta, GA 30328-4684
                                              1
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        LChandler. OGC
l      JGoldberg OGC
        EJulian,:SECY
        BKeeling CA
l        Enforcement Coordinators
l          RI. RIII. RIV
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        JLieberman. OE
l      WBeecher. OPA
l      GCaputo. 01
l      TMartin. AE0D
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        PUBLIC
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      .NRC Resident Inspector
,      U.S. Nuclear Regulatory Commission                              ,
        11030 Hatch Parkway North-
l
        Baxley GA 31513                                          .
                                                                          (                ,
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                  DATE      4/ N /98 I/      /98  4/ d[/ /98      4/ M /98-      k/ N /9 0
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                  OfflCIAL RECORD M Y DOCUMENT NAME:H'I\1980 PEN.ENF\98209 HAT.DIR\DISCLTR.HA V
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