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{{#Wiki_filter:NPC FORM 3G6 U. i NUCLE AR REGULATORY COMMISSION (7 77)LICENSEE EVENT REPORT CONTROL BLOCK: l lllllh (PLEASE PRINT OR TYPE AL! REQUIRED INFORMATION)
{{#Wiki_filter:NPC FORM 3G6                                                                                                                       U. i NUCLE AR REGULATORY COMMISSION (7 77)
: 6 o-o o o lo o l- lo lo l@l 411l 1 1l1l@lll@IN lC la le lp 12 l@lo o i F 8 9 LICENSEE CODE 14 15 LICENSE NUMHE*4 25 26 LICENSE TYPE Ju b 7 C A T 58 CON T 3[gC l L l@
LICENSEE EVENT REPORT CONTROL BLOCK: l l          l    l    l      lh 6
015 0 l - l o l 3 l 2 l4 l@l 0 l8 13 l1 l7 l9 lg 0 l 9 l 2 l 5 l 7 9lg" " o 1#8 60 61 DOCK ET NUMBER 68 63 EVENT DATE 14 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 lDuring normal plant operation, the operator noticed that the drwell oxygen / hydrogen j Imonitor, CPC-1263, had a low flow condition and was not indicating normally. Drywell l O 3l oxygen concentration was maintained less than 47. by the CAC-1259 instrument.
(PLEASE PRINT OR TYPE AL! REQUIRED INFORMATION) o     i      IN lC la le lp 12 l@lo                          o  -       o   o   o lo o l- lo lo l@l 411l 1 1l1l@l l l@
lo 4[ o l s j l Technical Specifications 3.6.6.4, 6.9.1.9b l0 6l0 7lO s !I 80 7 8 9 SYST E M CAUSE CAUSE C O*.* P.VALyg CODE CODE SUBCODE COYPONENT CODE SU8 CODE SUBCODE ITTsl IS lr l@ U@ l xl@ l A11l al D j al Yl@ g@ g @
F           8 9         LICENSEE CODE               14   15                     LICENSE NUMHE*4                   25       26       LICENSE TYPE Ju         b 7 C A T 58 CON T o    1 3[gC       l L l@ 015 0 l - l o l 3 l 2 l4 l@l 0 l8 13 l1 l7 l9 lg 0 l 9 l 2 l 5 l 7809lg
1 8 9 10 11 12 IJ 18 19 2Q ,,_SEQUENTI AL OCCU R R E N CE REFORT REVISION LER EVENT YEAR REPORT NO.
  #           8                     60           61             DOCK ET NUMBER               68   63       EVENT DATE               14       75       REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o   2 lDuring normal plant operation, the operator noticed that the drwell oxygen / hydrogen                                                                                       j O    3      Imonitor, CPC-1263, had a low flow condition and was not indicating normally. Drywell l o    4      l oxygen concentration was maintained less than 47. by the CAC-1259 instrument.                                                                                       l
CODE TYPE NO.O17 Rg'ROl7 9l_j 0l 7l 9ll ,,,, -l0l3lL [_l@_ 21 22 2J 24 26 21 28 2')30 31 J2 TAKEN A T ON ON PLANT A T1 HOURS 22 S B ITT D FOH UB.SU PLIE MAN FACTURER x lgZ]gl35 Z lglJuZ@0l 0[ 0lgg Y lgl A glH[0 4l1lg 34 3/40 41 42 43 44 47 JJ CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27
[ o l s j l Technical Specifications 3.6.6.4, 6.9.1.9b                                                                                                                                 l 0  6                                                                                                                                                                              l 0    7                                                                                                                                                                            l O  s !                                                                                                                                                                           I 7           8 9                                                                                                                                                                     80 SYST E M           CAUSE         CAUSE                                                       C O*.* P.         VALyg CODE             CODE       SUBCODE                 COYPONENT CODE                     SU8 CODE           SUBCODE ITTsl 1            8 IS lr l@ U@ l xl@ l IJA11l al D j al Yl@ g@ g @
[ An investigation found that the air dryer had frozen, blocking the sample air flow.
9         10         11             12                                           18           19               2Q
i O I1 Iil lThe dryer was deenergized and allowed to thaw, and a dry nitrogen purge was used to
                                    ,,_                                        SEQUENTI AL                       OCCU R R E N CE         REFORT                     REVISION LER           EVENT YEAR                             REPORT NO.                           CODE                   TYPE                         NO.
[j, j7j l blow out the moisture and dry the coils. The dryer was inspected by a contract heat- l lij3;ing and air-conditioning company and no problem could be found with the dryer. The lg l system was returned to service and monitored for several days with no problems noted; l 7 8 9 (LON'l)80 STNS^% POWE R OTHER STATUS IS O RY DISCOVERY DESCRIPTION y@ l 0l 9l 3lgl NA llAlgl Operator Surveillance li s ACTIVITY CONTENT RELEASED CF RELE ASE AVOUNT OF ACTIVITY LOCATION OF R2 LEASE LL11] LzJ @ LzJ@l n i Im i 1 8 9 10 11 44 45 go PE RSONNE L EXPOSURES NUMBE R TYPE DESCRIPTION lo o l o l@L Z J@l NA i 7'''" 8'' 'PE RSONNE L iN;UdiES NUMBER DESCRIPTION l o l o l o l@l NA li a 1 8 9 11 12 po LOSS OF OR DAVAGE TO FACILITY 7909280LI De TvPE D E SC "'"' N
O17 Rg'RO l7 9l
-Li Ltj l z l@l NA l_7 8 9 10 80 ts DESCRIPTION vle 12101 NSUE @l u i I i i i iIi15 1 8 9 10 68 09 80 %NAME OF PREPARERA. C. To111 son, Jr.
_ 21          22        2J
WWMM 2 pnnyg
_j 24 0l 7l 9l 26 l ,,,, -
.-LER CONTINUATION -- RO# 2-79-079 Facility: BSEP Unit No. 2 Event Date:
21 l0l3 28         2')
8-31-79 therefore, this is considereil an isolated event and no further action is required.s-M--J w}}
lL [
30
_l 31 J2 TAKEN A T ON                 ON PLANT         A T1                   HOURS 22         S B ITT D       FOH       UB.       SU PLIE           MAN FACTURER x lgZ]g JJ        34 l35 Z lg          lJuZ@           3/
0l 0[ 0l 40 gg 41                42 Y lg            l A g lH[0 4l1lg 43           44                 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 i  O      [ An investigation found that the air dryer had frozen, blocking the sample air flow.
I1 Iil lThe dryer was deenergized and allowed to thaw, and a dry nitrogen purge was used to                                                                                             [
j, j7j l blow out the moisture and dry the coils. The dryer was inspected by a contract heat- l lij3;               ing and air-conditioning company and no problem could be found with the dryer. The                                                                                 l g l system was returned to service and monitored for several days with no problems noted; l 7           8 9                                                                                                                                               (LON'l)             80
                  ^
STNS               % POWE R                     OTHER STATUS                 IS O RY                               DISCOVERY DESCRIPTION i  s        y@ l 0l 9l 3lgl NA                                                     l    lAlgl Operator Surveillance                                                           l ACTIVITY       CONTENT RELEASED CF RELE ASE                       AVOUNT OF ACTIVITY                                                       LOCATION OF R2 LEASE LL11]               LzJ @ LzJ@l n                                                         i         Im                                                                           go i
1           8 9               10           11                                       44         45 PE RSONNE L EXPOSURES NUMBE R               TYPE       DESCRIPTION i    7      lo     o l o l@L Z J@l NA PE RSONNE L iN;UdiES
                                          '            "                                                                                                                          8 NUMBER               DESCRIPTION i    a                                                                                                                                                                            l 1            8  9 l o l o l o 11l@l 12    NA                                                                                                                                       po LOSS OF OR DAVAGE TO FACILITY Li Ltj l z l@l NA TvPE       D E SC "'"' N 7909280LI De                      -
l 7            8 9             10                                                                                                                                                     80 ts         DESCRIPTION                                                                                                               vl                                  e 12101 NSUE @l u                                                                                                                                     i   I       i     ii      iIi15 1           8 9             10                                                                                                                   68 09                           80 %
NAME OF PREPARERA. C. To111 son, Jr.                                                               pnnyg            WWMM                                     2
 
LER CONTINUATION -- RO# 2-79-079 Facility: BSEP Unit No. 2                         Event Date: 8-31-79 therefore, this is considereil an isolated event and no further action is required.
s-M J w}}

Latest revision as of 06:47, 2 February 2020

LER 79-079/03L-0:on 790831,operator Noticed Drywell Oxygen/Hydrogen Monitor Had Low Flow Condition & Indicated Abnormally.Caused by Frozen Air Dryer.Dryer de-energized & Allowed to Thaw.Dryer Inspected W/No Problem
ML19208D438
Person / Time
Site: Brunswick Duke Energy icon.png
Issue date: 09/25/1979
From: Tollison A
CAROLINA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19208D437 List:
References
LER-79-079-03L, LER-79-79-3L, NUDOCS 7909280427
Download: ML19208D438 (2)
v • d • e


Text

NPC FORM 3G6 U. i NUCLE AR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l lh 6

(PLEASE PRINT OR TYPE AL! REQUIRED INFORMATION) o i IN lC la le lp 12 l@lo o - o o o lo o l- lo lo l@l 411l 1 1l1l@l l l@

F 8 9 LICENSEE CODE 14 15 LICENSE NUMHE*4 25 26 LICENSE TYPE Ju b 7 C A T 58 CON T o 1 3[gC l L l@ 015 0 l - l o l 3 l 2 l4 l@l 0 l8 13 l1 l7 l9 lg 0 l 9 l 2 l 5 l 7809lg

  1. 8 60 61 DOCK ET NUMBER 68 63 EVENT DATE 14 75 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 lDuring normal plant operation, the operator noticed that the drwell oxygen / hydrogen j O 3 Imonitor, CPC-1263, had a low flow condition and was not indicating normally. Drywell l o 4 l oxygen concentration was maintained less than 47. by the CAC-1259 instrument. l

[ o l s j l Technical Specifications 3.6.6.4, 6.9.1.9b l 0 6 l 0 7 l O s ! I 7 8 9 80 SYST E M CAUSE CAUSE C O*.* P. VALyg CODE CODE SUBCODE COYPONENT CODE SU8 CODE SUBCODE ITTsl 1 8 IS lr l@ U@ l xl@ l IJA11l al D j al Yl@ g@ g @

9 10 11 12 18 19 2Q

,,_ SEQUENTI AL OCCU R R E N CE REFORT REVISION LER EVENT YEAR REPORT NO. CODE TYPE NO.

O17 Rg'RO l7 9l

_ 21 22 2J

_j 24 0l 7l 9l 26 l ,,,, -

21 l0l3 28 2')

lL [

30

_l 31 J2 TAKEN A T ON ON PLANT A T1 HOURS 22 S B ITT D FOH UB. SU PLIE MAN FACTURER x lgZ]g JJ 34 l35 Z lg lJuZ@ 3/

0l 0[ 0l 40 gg 41 42 Y lg l A g lH[0 4l1lg 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 i O [ An investigation found that the air dryer had frozen, blocking the sample air flow.

I1 Iil lThe dryer was deenergized and allowed to thaw, and a dry nitrogen purge was used to [

j, j7j l blow out the moisture and dry the coils. The dryer was inspected by a contract heat- l lij3; ing and air-conditioning company and no problem could be found with the dryer. The l g l system was returned to service and monitored for several days with no problems noted; l 7 8 9 (LON'l) 80

^

STNS  % POWE R OTHER STATUS IS O RY DISCOVERY DESCRIPTION i s y@ l 0l 9l 3lgl NA l lAlgl Operator Surveillance l ACTIVITY CONTENT RELEASED CF RELE ASE AVOUNT OF ACTIVITY LOCATION OF R2 LEASE LL11] LzJ @ LzJ@l n i Im go i

1 8 9 10 11 44 45 PE RSONNE L EXPOSURES NUMBE R TYPE DESCRIPTION i 7 lo o l o l@L Z J@l NA PE RSONNE L iN;UdiES

' " 8 NUMBER DESCRIPTION i a l 1 8 9 l o l o l o 11l@l 12 NA po LOSS OF OR DAVAGE TO FACILITY Li Ltj l z l@l NA TvPE D E SC "'"' N 7909280LI De -

l 7 8 9 10 80 ts DESCRIPTION vl e 12101 NSUE @l u i I i ii iIi15 1 8 9 10 68 09 80 %

NAME OF PREPARERA. C. To111 son, Jr. pnnyg WWMM 2

LER CONTINUATION -- RO# 2-79-079 Facility: BSEP Unit No. 2 Event Date: 8-31-79 therefore, this is considereil an isolated event and no further action is required.

s-M J w

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