View source for 05000324/LER-1982-024, Updated LER 82-024/01T-1:on 820205,determined That Control Bldg Emergency Ventilation Sys Trains Will Not Isolate Upon Receipt of Chlorine Isolation Signal If Control Switch in on Position Due to Design Deficiency

{{Adams
| number = ML20082D590
| issue date = 11/14/1983
| title = Updated LER 82-024/01T-1:on 820205,determined That Control Bldg Emergency Ventilation Sys Trains Will Not Isolate Upon Receipt of Chlorine Isolation Signal If Control Switch in on Position Due to Design Deficiency
| author name = Allen M, Dietz C
| author affiliation = CAROLINA POWER &amp; LIGHT CO.
| addressee name = Oreilly J
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| docket = 05000324
| license number = 
| contact person = 
| document report number = BSEP-83-3386, LER-82-024-01T, LER-82-24-1T, NUDOCS 8311220477
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 3
}}
{{LER
| Title = Updated LER 82-024/01T-1:on 820205,determined That Control Bldg Emergency Ventilation Sys Trains Will Not Isolate Upon Receipt of Chlorine Isolation Signal If Control Switch in on Position Due to Design Deficiency
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000324
| LER year = 2082
| LER number = 24
| LER revision = 
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

=text=
{{#Wiki_filter:wu                                                                                                                                                                        ...z.a...._
                                                                                                                                   . . _.      2 _ m         --. , . _
7 LICEN3EE EVENT REPORT                        U Pdate Report:
        '),          r .                                                     .
Previous ~ Report'Date:                                2-18-82 CONTROL BLOCK: l 1
l      l       l    l  l      lh 6
(PLEASE PRINT OR TYPE ALL REQUIRED INFCRMATIC'N) 7 o 1 8 9 l N lLICENSEE C l BCODE    l E l P l 2 l@l 0 -l 0 14      15                         l- l NUM8ER LICENSE   0 10 l0 10 l025l- l0 l0LICENSE                 l@264l1l1l1l1l@l TYPE JO l
57 CAT 58 l@
CON'T o i               jv,
                       " '0"y l I, l@! 0 l 5 l 0 l - l 3 l 2 l 4 l l@l01210 l5 l8 l2 l@l1 l 1 REPORT 68      69                               74        75 l1 l 4DATEl 8 l380l@
7          8                   60            61                DOCKET NUMBER                                 LVENT DATE EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h o 2 l While reviewina loFic orints for the Control Buildinn Emergency Ventilation System, it l o          l was determined the system trains will not isolate upon the receipt of a chlorine                                                                                               j o 4        l isolation signal if the system control switch is in the "on" position. Due to                                                                                                  l o s         l problems experienced with the high radiation initiation function for the emergency                                                                                            l s
o6 l Ventilation trains, the Brunswick station had been running a train with the switch in 1 o 7 l the "on" position from January 25, 198 2, to February 4,                                                             1982. This event did not                                         l oe         I affect the health 'and safety of the public.                                                  -Technical Specification 6.9.1.8i.                                               l 7         89                                                                                                                                                                                 80 SYSTEM                cAUSE          CAUSE                                                          COMP.           VALVE CODE                   CoOE      SU8 CODE                   COMPONENT CODE                     SUSCODE           SUCCODE 7
o 9 8
I Sl Glh Wh dh l ZI ZI Zl ZI Zl Z lh Wh U h 9          10             11            12            13                              18              19               20                                         .
                                   ,,,                                          SEQUENTIAL                           OCCURRENCE             REPORT                            ' REVISION       _
LERiRo      EVENT YE AR                                REPORT NO.                              CODE                  TYPE                                  N O.
                  @ ,aig l21 81 2l                             [---J          l Ol 2l 4l               [,(,)          l0l1l                   [JJ             [--j                [IJ
_             22             23            24            26         27             3       29              30               31                 32        -
KN A        O            ONP NT                ME                      HOURS              S8 i            FOR 1        8.       SU Li                       MAN F CTURER g
33
[J4X,,J@                  [Z,,j@
35 J@
36 l0l0l0l0l
                                                                                   ' 31                     40
[N,j@
41 W@ [Aj@
42                   43 ,                l Z l 9 l 9 l9 l@
44                    47 CAUSE DESC"RIPTION AND CORRECTIVE ACTIONS h i o       lDue to a design deficiency when the system is run in the "on" position, the chlorine                                                                                             l' i i        icontacts are bypassed in the circuit. Plant Mod 81-032 is being revised to rearrance i
         ,         lthe chlorine contacts so that when a chlorine isolation signal is received while in thel
        , 3 l " Preferred", " Standby", or "On" position, the system will isolate.                                                                          Installation of                          l 3 4       l Plant Mod 81-032 will restore the system to the original design intent, and is expected l 7        8 Ig,. ouOF                                                                                         "
                ,fCftgbe complete prior to December                                                                            -
STATUS             % POWER                          OTHER CTATU3               DISCOVERY                                 D:CCOVERY CEOCR:PTIO*:
i s W@ l0 l3 l5 ]@l                                               NA          l      l B l@l Routine system review                                                                    l A TIVITY CO TENT AMOUNT OF ACTIVITY                                                         LOCATION OF RELEASE 1 6       [ Z,,j                                                        NA           l            l     NA                                                                                  l 7
F.ELEASED@OP 8 9               10           tt RELEASE @l44                                 46                                                                                     80 PERSONNEL EXPOSURES NUMBER             TYPE           DESCRIPTION i 7
_l0l0l0l@ W     ''      '
                                                @l      ''
                                                                                                        ,       NA l
PERSONNEL m;UdiES NUU8ER              DESCRIPTION 7
i s 8 9 l0l0l0l@l     11       12 NA 80 l
LOSS 08 OR DAMAGE To FACluTY 43 TYPE     D                                                                                                                              IQ t 9
                         @l ESCRIPTION                                                                          NA                                                        ll[l l
7_       8 9           to                                                                                                                                                                   30 8311220477 831114                                                                                NRC USE ONLY h "'"' @
2 o                                                                                                                                            g    g;,;;;;;;;;,g 7       8 9           10
{DRADOCK05000                                                                  68 69                                      80 -
NAVE OF PREPARER y T. Men                                          PHONE:
919-457-9521

P
          +
LER ATTACHMENT - RO #2-82-024 SUPPLEMENT Facility:    BSEP Unit No. 2                    Event Date: February 5, 1982 While reviewing logic prints for the Control Building's Emergency Ventilation System, it was determined that the system trains will not isolate upon the receipt of a chlorine isolation signal if the system control switch is in the "on" position, Due to problems experienced with the high radiation initiation function for the emergency ventilation trains, the Brunswick station had been running a train with the switch in the "on" position from January 25, 1982, to February 4, 1982.
Due.to a design deficiency, when the system is run in the "on" position, the chlorine contacts are bypassed in the circuit. There is currently an administrative control in effect on the use of the emergency ventilation control switch while in the "on" position. This control is OP-37,                                                                      '
Section II.I, which states:
If an emergency air fan is in the 'on' position,'the chlorine alarm may not close the normal and or emergency make-up air dam;trs. If the Control Building chlorine alarm is received, the emergency fan switches should be immediately placed in the standby readiness condition and ensure the normal and emergency make-up air dampers close.
Plant Modification 81-032 is being revised to rearrange the chlorine contacts so that when a chlorine isolation signal is received while in the " preferred,"
                        ~
                     " standby," or "on" position, the system will isolate. Installation of Plant Modification 81-032 will restore the system to the original design intent and eliminate the use of the aforementioned administrative control. The plant modification is' expected to be installed prior to December 31, 1983.
ki r         i .

p-- -       9, - g 3
             ** F e
Cp&L Carolina Power & Light Company
                                        $3 Nb Brunswick Steam Electric Plant P. O. Box 10429 Southport, NC        28461-0429 November 14, 1983 FILE: B09-13510C SERIAL: BSEP/83-3386 Mr. James P. O'Reilly, Administrator U. S. Nuclear Regulatory Commission Region II, Suite 3100 101 Marietta Street N.W.                                                           1 Atlanta, GA     30303 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-324 LICENSE NO. DPR-62 SUPPLEMENT TO LICENSEE EVENT REPORT 2-82-024

==Dear Mr. O'Reilly:==

In accordance with Section 6.9.1.9b of the Technical Speci fications for Brunswick Steam Electric Plant, Unit No. 2, the encle. sed supplemental Licensee Event Report is submitted. The original report fulfilled the requirement for a written report within thirty (30) days of a reportable occurrence and is in accordance with the format set forth in NUREG-0161, July 1977.
Very truly yours, C. R. Dietz, General Manager Brunswick Steam Electric Plant RMP/pms/LETPS1 Enclosure cc:   Mr. R. C. DeYoung NRC Document Control Desk l
ff [ b I
}}

{{LER-Nav}}