PNO-III-89-058B, on 890922,licensee Took Initial Steps to Restart UF6 Conversion Process Shutdown Since 890829.Util Upgraded Safety of Conversion Process,Including Usage of Vital Equipment Repair Statusboard.New Stack Sys Designed: Difference between revisions

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#REDIRECT [[PNO-III-89-058, on 890829,potential UF6 Release Through Hydrogen Fluoride Scrubber Stack Serving UF6 Conversion Process Sys.Process Closed Down,Equipment Dismantled & Cracks Found in Filters Preceeding Scrubber]]
| number = ML20248C126
| issue date = 09/22/1989
| title = PNO-III-89-058B:on 890922,licensee Took Initial Steps to Restart UF6 Conversion Process Shutdown Since 890829.Util Upgraded Safety of Conversion Process,Including Usage of Vital Equipment Repair Statusboard.New Stack Sys Designed
| author name = Mallett B, Sreniawski D
| author affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
| addressee name =
| addressee affiliation =
| docket = 07000036
| license number =
| contact person =
| document report number = PNO-III-89-058B, PNO-III-89-58B, NUDOCS 8910030373
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION & AUDIT & I&E CIRCULARS
| page count = 2
}}
{{#Wiki_filter:(                            -                          ._ ..      -    -      - - _                                      - _ _ _                              - - _ _ - - - - -
PRELIMINARY NOTIFICATION''0F EVENT OR UNUSUAL OCCURRENCE PHO-III-58B Date Stptember 22,.1989
      .c          .
B This preliminary notification constitutes EARLY. notice of events of POSSIBLE.
                                                                                                                                                                                      'p i safcty or public interest significance. The information is as initially received                                                                                                      d without' verification or evaluation, and is. basically all that is known by the Region''III staff on this date.
Fccility: Combustion Engineering, Inc. Licensee Emergency CE Hematite:-                  Classification:
liematite, Missouri                    Unusual Event                                                                                                              -l Alert                                                                                                                        i
                    ' Docket No. 7 M036                      Site Area Emergency                                                                                                        _!
L                                                          General Emergency                                                                                                          1 X Not' Applicable
                                                                                                                                                                                          ]
Subjecti POTENTIAL UF6 RELEASE-(SECOND UPDATE)                                                                                                                                      l l
On September 22,-1989, the licensee took the latt1a1 steps to restart its                                                                                                            i uranium-hexafluoride (UF6) conversion process, which has.been shut down since
: August 29,:1989, as the result of an unplanned UF6 stack release on
    . August 28,.1989.          (See PNO-III-89-58A) A Region III (Chicago) fuel facility                                                                                                  j
    -inspector is on site monitoring the restart.                                                                                                                                          ;
During the downtime, the licensee upgraded the safety of the conversion process, including usage of a vital equipment repair status board for all citems which are required to be operational. The board item must be reviewed and signed off by'the shift supervisor before start-up of the system. On_1y the shift supervisor has the key to unlock the control for start-up..
The nitrogen feed control-valve, whost failure resulted'in the release,                                                                                                            ~'
J has been interlocked to the UF6-feed line so that the conversion process cannot;takel place unless the valve.is operational. A position indicator
    . light has been instelled on-the control panel to show the_ status of each' of the nitrogen valves,                                                                                                                                                              j i
1A new, improved stack monitoring system also has been designed, installed
,    and tested. The NRC inspector verified that all these systems and procedures were in place as of 1:00 p.m. (CDT), September 22, 1989.
,:The State"of Missouri will be notified.
This information is current as of 3:30 p.m. (CDT), September 22, 1989.
c          4 0 %.k D. i                          If%.S.Mallett i
CONTACT:'                reniawski FTS 388-5611                      FTS 388-5612 ef    /                        '
1 o \                                                                                ;
i                                                                -!
i 8910030373 890922
              .PDR      18cE
  ,            .PNO-III-05BB            PNU  .-. .
3
 
PR      ARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-III-58B Date Septcmber 27, 1989
    /                                                _,_
  . DISTRIBUTION:
HEAD 00ARTERS OFFICES Ehairman Carr tlilRC1718/CARRPN)        NM55      (TNRC0506 &
Comm. Roberts (lNRC1718/ WRIGHT)                      1NRC0304/NRRPN)
Comm. Rogers (lNRC1718/ VAN CISE)        GPA: SLIP (lNRC0304/SLIPN)                                        i l
Comm. Curtiss (lNRC1718/CURTISPN)        GPA:PA    (1NRC02/0PAPN)
ED0              (1NRC1718/ED0PN)        AEOD      (NRCRH/AE0DPN)                                        i G:n.' Counsel    (lNRC1516/0GCPN)        *01G      (NRCRMP/0IGDV)
NRR              (lNRC1112/NRRPN)        *ASLAP    (NRCRMP/ASLAPDW)
GPA:CA          (lNRC1718/0CAPN)        Research (NRCRES/RESPN) 1NRC1718/GRIGGS)                                                                        !
Enforcement      (lNRC0708/0EPN)
REGIONS                MAIL T0:      FAX T0:
                                                              ~
: R gion I      (NRCRI/RIPN)        DCS (Orig.)      INP0 R:gion II (NRCRII/RIIPN)          DOT (Trans.      NSAC  -
R;gion III (NRCRIII/RIIIPN)            Only)      LIC  -
Region ~IV  (NRCRIV/RIVPN)                        NRC OPS CTR WO3 Region V    (NRCRV/RVPN)                          PDR (8/634-3R3 T 4/1 0                                  I cDenotes a Displaywriter/PC not an IBM 5520 Terminal.                                                      '
Rev. 07/20/89 I
(                                                                                                              1 I
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