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| issue date = 12/03/1980
| issue date = 12/03/1980
| title = LER 80-043/03L-0 for Dresden, Unit 2 Re Surveillance Testing of the Condenser Low Vacuum Switches, Pressure Switch 2-503D Was Found to Have a Trip Point of 22.85 Inches Hg
| title = LER 80-043/03L-0 for Dresden, Unit 2 Re Surveillance Testing of the Condenser Low Vacuum Switches, Pressure Switch 2-503D Was Found to Have a Trip Point of 22.85 Inches Hg
| author name = Scott D J
| author name = Scott D
| author affiliation = Commonwealth Edison Co
| author affiliation = Commonwealth Edison Co
| addressee name = Keppler J G
| addressee name = Keppler J
| addressee affiliation = NRC/RGN-III
| addressee affiliation = NRC/RGN-III
| docket = 05000237
| docket = 05000237
Line 17: Line 17:


=Text=
=Text=
{{#Wiki_filter:-* / . ,. ". "' I CommonweaaEdison Dresden Nuclear -r Station R.R. #1 Morris, Illinois 60450 Telephone 815/94?-2920  
{{#Wiki_filter:'V I
'V December 3, 1980 DJS /180-284 James 9. Keppler, Regional Director Directprate of Regulatory Operations U.S. Nµclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 -Region III v> tu .::::
CommonweaaEdison
-VI >o_.,. zz---
/
:l:rri :::0 < (") : &deg;'' ' ,.,, ._(I):' C> Report'able Occurrence Report tf80-43/03L-0,  
Dresden Nuclear - r Station R.R. #1
.Docket 11050-237 is being-...&*
  "'                  Morris, Illinois 60450 Telephone 815/94?-2920 December 3, 1980 DJS LT~ /180-284 I"*
submitted to your office in accordance with Dresden Nuclear Power Statio,n Technical Specification 6.6.B.2.  
v>                ,.
(a), reactor protection system or engineered safe.ty feature instrument settings which are found to be less conservative than those established by the technical fications but which do not prevent the fulfillment of the functional requirements of affected systems.
                                                                                -~
D. J. Scott Station Superintendent Dresden Nuclear Power Station ' DJS:lg I cc: Director of Inspection  
:.~
& Enforcement I pirector of Management.Information  
                                                                                              ~c~ *:~:__,
& Program Control p. S. NRC, Document Mgt. Branch iFile/NRC A \' /1 " ' I"* ,.
James 9. Keppler, Regional Director                                   tu          ;;rJ.-;';
_ _, ;;rJ.-;';
                                                                                .::::        :.:~ c::f Directprate of Regulatory Operations - Region III                ~-ic:
c::f r>CJ l"'
U.S. N&#xb5;clear Regulatory Commission                               zz---
C:::>".J
                                                                                -VI
-cc:: 0 ;;;c: DEC121J1)4 i ,
                                                                            >o_.,.     :&deg;''  r>CJ l"' l;--
* co"il'rR,oLaLocK, I. I I EVE,::::::::.oR TYPE ALL REouoRED 1NFORMAT10N1
(/)~
*. ... --'----'"_  
799 Roosevelt Road                                              0(/)~            C:::>".J
....... __. ___ ..... _6 \.:J. !ill I i I LI n I RI s I 2 l@I o l*o I-Io lo lo* lo 10 b Io I o IG)l 4 11 11 11 11 101
:l:rri
* I I 7 s 9 LICENSEE' COOE . 14' 15.* LICENSE NUMBER. ' 25 26.' LICENSE TYPE JO 57 CAT .58. ' ' i1!i t_;:J&#xa9;I 01s10*10 10 1213 11 10111111131s1o1&#xa9;1112 10 JS JB 10 I@ 7 8 60
                                                                                            ~c:;
* 61 DOCKET NUMBER . 68* 69 EVENT DATE . 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@  
Glen Ellyn, IL 60137                                                  :::0        -cc::
*. * [IJIJ 1nuring the monthly survei11ance testin . of the condenser low vacuum swi t.ches, *pressure This*is below*the
                                                                                <                ~
!TI[]. 1switch
(")
* 2-503D'.
                                                                              ._(I):' C>
was found to. have a trip. point of 22. 35* inches Hg*. []JIJ 1Tech Spec (Tab*le 3: 1.1) limit. of greater than or equal to: 23 in. Hg. This event*was  
0
[]]]]
                                                                                                  ;;;c:
* 1of minimal significance since the other three vacuum switches were capable of !TI[]. !performing required safety function.
Report'able Occurrence Report tf80-43/03L-0, .Docket 11050-237 is being-...&*
This is the first occurrence of this. type ITIIJ [ill] at Dresden.
submitted to your office in accordance with Dresden Nuclear Power Statio,n Technical Specification 6.6.B.2. (a), reactor protection system or engineered safe.ty feature instrument settings which are found to be less conservative than those established by the technical speci-fications but which do not prevent the fulfillment of the functional requirements of affected systems.
7 8. 9 [&sect;TI]: 7 8 SYSTEM . , CAUSE. CAUSE COMP. CODE . CODE SUBCOOE, COMPONENT CODE SUBCOOE*
D. J. Scott Station Superintendent Dresden Nuclear Power Station DJS:lg Enclo~ure cc:
I r1 Aj@ L:J@L:J@
I Director     of Inspection & Enforcement I
I r1 NI s IT IR 1u I@ L..:J@ 9 10 . 11 12 1J 18 19 ' SEQUENTIAL OCCURRENCE REPORT VALVE suBCOOE L.:J @. 20 -(.':;\ LEA/RO CVENT.YEAA:*
pirector of Management.Information & Program Control
REPORT NO. coos TYPE \:.:J I a , I 0 L I I I 0 I 4 I 3 I I ..,.... L I 0 13 I I . I 21 . 22 23 24 26 27 2B l9 JO 31 REVISION:
: p. S. NRC, Document Mgt. Branch iFile/NRC A0 11~ \ '
NO.
                                                                    /1 " '
32 L I. I 80 e ACT10N FUTURE EFFECT
DEC121J1)4
* SHUTDOWN  
 
. ATTACHMENT NPR04* PRIME COMP. TAKEN ACTION *' ... 'ON PLANT . METHOD * . HOURS 22 . . SUBMITTED FOAM :>UB. SUPPLJ.EA  
i
. Li@l.:J@'.
      , *.* ~1.                                                               ~I Lll~SEE EVE,::::::::.oR TYPE ALL REouoRED 1NFORMAT10N1 co"il'rR,oLaLocK, I.... - - ' -I- - - I' " _.......__.___....._6 \.:J.
LtJ@ L:J I 0 I 0 I 0 I L l::J@* COMPONENT
!ills 7
. I I 01* I I@ ' J3 34 JS . . JS. . 37 40
I i I LI n I RI s I 2 l@I o l*o I- Io lo lo* lo 9          LICENSEE' COOE              . 14'      15.*                      LICENSE NUMBER.
* 41 42 *
10      b Io I o IG)l 4 11
* 43 44' 47'
                                                                                                                                      '    25      26.'
* CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS @'. . . O:[&sect;] I 'This* event: cair be.*.attributed.  
11     11 11 101
;to* .'iristrument  
* I I LICENSE TYPE          JO    57 CAT .58. ' '
-drift.**  
i1!i 7          8
'Pressure*
:~~~i t_;:J&#xa9;I 01s10*10 10 1213 60
switch 2-503D: was reset t*o L [IJ:IJ j"trip at 23.75 inches Hg. vacuilm.
* 61                  DOCKET NUMBER          .
The test was.repeated three times to prove operabili-1 CIIIJ l ty. This surv.eillance will continue to be perf armed monthly.
11 10111111131s1o1&#xa9;1112 10 JS JB 10 I@
No further action . I o::.I]J...,_r_e_q_u_i_*r_e_d_._*--+.,.....-----------------------------------------------------------------'  
68*     69           EVENT DATE .             74       75       REPORT DATE           80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@                                                     *.                                                           *
! IJJI] 7 8 9 FACILITY STATUS % POWER !III] L:J@ Io I 4 I 7 l@)I .. l3c)\ . METHOD OF
[IJIJ           1 nuring the monthly survei11ance testin . of the condenser low vacuum swi t.ches, *pressure L
* OTHl;R STATUS \::;:J * . DISCOVERY  
!TI[]. switch
. . DISCOVERY  
* 2-503D'. was found to. have 1
.Q.ESCAIPTION 32 NI A !' ... I ___ M_o_n_t_h_l_y_s_u_rv_e_:u._.L_a_n_c_e
a trip.         point of 22. 35* inches Hg*.                               This*is below*the I.
______ 80. a 9 10 : 12 11 ACTIVITY' CONTENT' RELEASED OF RELcASE I AMOUNT OF ACTIVITY  
[]JIJ           1 Tech Spec (Tab*le 3: 1.1) limit. of greater than or equal to: 23 in. Hg.                                                                                       This event*was I
: ITEJ .LI@ L.:JI* NA *
[))))
* r* 7 B *9* 10 11 PERSONNEL EXPCSURES.
* of minimal sa~ety significance since the other three vacuum switches were capable of 1
, r.::;\
!TI[]. !performing                       th~ir          required safety function.                                     This is the first occurrence of this. type at Dresden.
O (.;":;\:TYPE DESCRIPTION
ITIIJ
[IE] 1
[ill]
* I I
7         8. 9                                                                                                                                                                                               80 SYSTEM . ,               CAUSE.             CAUSE                                                                   COMP.           VALVE CODE .                   CODE           SUBCOOE,                     COMPONENT CODE                           SUBCOOE*           suBCOOE
__ A-..,...
[&sect;TI]:
___________________
7          8 I r1         Aj@             L:J@L:J@ I r1 NI s IT IR 1u I@                                                           L..:J@ L.:J @.
__, a g . 11 12 13
9             10 .           11               12                 1J                                   18             19                 20    -
* PERSONNEL INJURIES  
                                                '                                        SEQUENTIAL                                   OCCURRENCE               REPORT                         REVISION:
. (,;'";\ NUMBER I Oj
(.':;\   LEA/RO CVENT.YEAA:*                                           REPORT NO.                                       coos                   TYPE                           NO.
________________
                \:.:J ~~~~~~          I a, I 0 21    .      22 L           I 23 I           I 24 0 I 4I 3I    26 I..,.... L 27 I 0 13 2B        l9 I           ~
79 9 11 12' !30 LOSS OF OR OAMA9E TO FACI LJTY . TYPE DESCRIPTION I ' IiID LJ@** ' ' A 7. 44 45 46 80 N/A LOCATION OF RELEASE*@
JO I. I 31 L..~..J 32
: 44. 46 so 1 a 9 10 PUBLICITY
    . e Li@l.:J@'.
. ' C\ _..,....  
ACT10N      FUTURE                  EFFECT
. ...,. ISSUEDl,;";\DESCRIPTION ' rn l.EJ6 * *.. . . *.
* SHUTDOWN                 .                 ~          ATTACHMENT           NPR04*           PRIME COMP.               COMPONENT TAKEN       ACTION *' ... 'ON PLANT .                   METHOD         *       .     HOURS       22 . . SUBMITTED         FOAM :>UB.           SUPPLJ.EA             M~NUFACT~AE'9      .
80 NRC USE ONLY ' "' I I I l I 1'11*1 I I I If :1 8 9 10 ' ! 68 '59 ii.J.
0            0
80*;;; 
            '    J3            34 LtJ@
--...........
JS .          .
1.A.r'----***---*-*****-*-
L:J JS.      .
**-** -*--* .. *--** ..... -***** ---@;,*** ,;* '-'* ** 'W . * .* 'commo*nweatth*
I 37 I I0 I 40L* l::J@* ~
Edison* DEVIATION REPORl . 9 STA* UNff YEAR. NO; 12 -2  
41                42 *
-.73 it 2 Condenser*
                                                                                                                                                                            ~@.
Low Vacuum Switch Below.Tech.
* 43                44' 0
s'pec. Limit OCCURRED*
I I 1* I I@
11-u:...so.
47'
110.0 TIME c SYSTEM AFFECTED  
* CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS                                       @'.                 .             .
*500 Reactor Protection System DESCRIPTION OF* EVENT. PLANT CONDITIONS
O:[&sect;] I 'This*               event: cair be.*.attributed. ;to* .'iristrument -drift.** 'Pressure* switch 2-503D: was reset t*o                                                                               L
. MODE .Run PWR MWT) 1207 DATE TESTING LOAD MW-E). 366 C:Xl .CI YES NO Pressure switch 2-'503D as found'*set point of 22.85.inches.Hg; vacuum is the requried set point* of greater.than or equal to*23 inches *Hg.vacuum,set point.was checked three times and *tripped at 22.85. inches Hg*. vacuum each. time. DESCRIPTION OF CAUSE
[IJ:IJ         j"trip at 23.75 inches Hg. vacuilm.                                               The test was.repeated three times to prove operabili- 1 CIIIJ l           ty.       This surv.eillance will continue to be perf armed monthly.                                                                           No further action                         .I o::.I]J...,_r_e_q_u_i_*r_e_d_._*--+.,.....-----------------------------------------------------------------'
* Set point drift .. . OTHER APPL I CABLE \J'IFORMATl ON . * . Reset switch to 23.75 Hg. vacuum* decreasing*
IJJI]
and checked repeatability three times w:ith no change in setpo.fnt noted. EQUIPMENT0Yes, CR NO. FAILURE' DD NO WR* NO. A. R'.
7         8     9 FACILITY STATUS               % POWER                               OTHl;R STATUS l3c)\ . METHOD OF
* Zapatocky 1n:SPriNSIBLE SUPERVISOR*
                                                                                                \::;:J * . DISCOVERY
PART 2 I OPERATING ENGINEERS COMMENTS  
                                                                                                                                                .         . DISCOVERY .Q.ESCAIPTION 32 80.
. Kema1ning three switches were capable of performing_
!III]          L:J@            Io I 4 I 7 l@)I ..                          NI A                        !'     ~@ I...___M_o_n_t_h_l_y_s_u_rv_e_:u._.L_a_n_c_e_ _ _ _ _ _~
the* required safety function.
: 7.       a     9               10         :         12       11                                     44      45            46                                                                          80 ACTIVITY' CONTENT'                                                               ~
11-13,..so DATE SAFEn'-.  
RELEASED OF RELcASE                           I   AMOUNT OF ACTIVITY             :
: . TYPE DEVl:A'Tl ON:* EVENT* OF*. POTENT.I AL .. **TECH" *SPEC.: NON*-REPORTABLE''.
r*
ANNUAL RELATED * :1 .. REPORTABLE  
LOCATION OF RELEASE*@
:OCCURRENCE'-**.  
ITEJ .LI@ L.:JI*
:
7         B *9*                 10               11 NA                  *                      *
* PUBL'f C' INTEREST'.
: 44.            46 N/A PERSONNEL EXPCSURES.                                  , r.::;\
VI OlATl ON***. OCCURRENCE.
                    ~UM~ER      O (.;":;\:TYPE
REPO'RTI NG. WR ISSUED . D 14. DAY D t0'CFR2.1  
[IE]           1*     I     I DESCRIPTION
*YES . 0 YES D' ; D .. o* D 30 DAY ON NO D NO w .6 .. . REPORTABLE.
                                  ~0~~------N_l A-..,..._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___,      __
ACT.I ON ITEM NO.* PROMPT ON-SITE NOTIFICATICN NUMBER I R, -M. *Ragan 11/17/80  
a   g       .         11       12               13
. 11:00 -: 80-43/031-0',.  
* so PERSONNEL INJURIES                 .     (,;'";\
; Tl TLE DATE TIME .. .. /* Tl TLE DATE TIME 24--HOURi NRC NOTIFICATION PROMPT .OFF-SITE NOTIFfCATION o*T?H N/A F. A, Palmer 11/17/80 3:35 ' N/ fEGl,ON I I I DATE TIME Tl TLE DATE TIME o*TG'A. REGION I I I & OOL CATE TIME Tl TLE DATE TIME . ' RESPONSIBLE.
NUMBER                 DESCRIPTION~
COMPANY OFFICER INFORMED OF IOCFR21 ,. CONDITIONS ANO THEIR REPORT TO NRC
~7,*          I   Oj 01*01@~*-..,...--..,...--N-/_A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _~---~
* DATE f I ME c REV! EW ANO. COMPLETED ACCEPTANCE BY: STATlON REVIEW AS REOU I RED . DATE* RESOLUTION.
79            9                11        12' LOSS OF OR OAMA9E TO FACI LJTY ~3                          .
APPROVED ANO AUTHOR I ZED FOR* DI STR I BUTI ON *. 11/17 /80 .. --DATE
                                                                                                                                                                                                            !30 TYPE          DESCRIPTION                                I '
* I ;L-IO-?fJ DATE -<}}
IiIDa 1
LJ@**
9            10
                                          '                '            A 80 PUBLICITY        . '        C\                                                                                                                                    NRC USE ONLY rn l.EJ6 * *..
:1
      . ...,. ISSUEDl,;";\DESCRIPTION 8    9            10
                                                  ~.'
                                                                'N/A~
68 I I I l I 1'11*1 I I I
                                                                                                                                                                              '59 If 80*;;;
  !                                                                                                                                                                    ii.J. J.)..042.,i,.?~Ul X~9.
 
DEVIATION REPORl .9
      ,;** .* 'commo*nweatth* Edison*
                            'W .                                           STA*   UNff YEAR.         NO; D.~  12 -       2 ~so.  -     .73 OCCURRED*
it 2 Condenser* Low Vacuum Switch Below.Tech. s'pec. Limit                                                                   11-u:...so.       110.0 DATE          TIME c SYSTEM AFFECTED *500                   PLANT CONDITIONS .                                                                                TESTING Reactor Protection System                                   .Run                             1207                                 366          C:Xl .CI MODE                      PWR MWT)                          LOAD MW-E).                     YES   NO DESCRIPTION OF* EVENT.
Pressure switch 2-'503D as found'*set point of 22.85.inches.Hg; vacuum is                                             belo~        the requried set point* of greater.than or equal to*23 inches *Hg.vacuum,set point.was checked three times and
    *tripped at 22.85. inches Hg*. vacuum each. time.
DESCRIPTION OF CAUSE
* Set point drift ..
              . OTHER APPL I CABLE           \J'IFORMATl ON         .   *           .
Reset switch to 23.75                         Hg. vacuum* decreasing* and checked repeatability three times w:ith no change in setpo.fnt noted.
EQUIPMENT0Yes,               CR NO.             WR* NO.                     A. R'.
* Zapatocky                                     11-13,..so FAILURE'      DD  NO                                                                    1n:SPriNSIBLE SUPERVISOR*                         DATE PART 2         I OPERATING       ENGINEERS COMMENTS
    . Kema1ning three switches were capable of performing_ the* required safety function.
SAFEn'-.     * :1
      . TYPE OF~ DEVl:A'Tl ON:*               .. EVENT* OF*. POTENT.I AL .. **TECH" *SPEC.:           NON*- REPORTABLE''.       ANNUAL                 RELATED
                                                                                                                                                                    ~
REPORTABLE :OCCURRENCE'-**. :
* PUBL'f C' INTEREST'.                         VI OlATl ON***.       OCCURRENCE.         REPO'RTI NG.           WR ISSUED .
D                     D     t0'CFR2.1                                                                                 *YES .
0             YES D'
  -~
: 14. DAY 30 DAY o"*O!,'~F~S~TI
                            .6 . . ~a ON                  D o*                     D               NO D             NO w               .
  . REPORTABLE. CCCURR~NCE                              ACT.I ON ITEM NO.*               PROMPT ON-SITE NOTIFICATICN NUMBER               I                                                     R, -M. *Ragan                         11/17/80 .             11:00 Tl TLE                        DATE              TIME
        ~-            80-43/031-0',.             ;                                     ..         ..
                                    /*                                                                     Tl TLE                         DATE               TIME         '
24--HOURi NRC NOTIFICATION                                     PROMPT .OFF- SITE NOTIFfCATION o*T?H                 N/A N/ fEGl,ON      I I I          DATE            TIME F. A, Palmer Tl TLE 11/17/80 DATE 3:35 TIME o*TG'A.
REGION     I I I & OOL         CATE           TIME                             Tl TLE                         DATE               TIME RESPONSIBLE. COMPANY OFFICER INFORMED OF                             IOCFR21
,. CONDITIONS ANO THEIR REPORT TO NRC
* DATE               f I ME
                                                                                                                                    *. ..11/17
                                                                                                                                          -      /80 REV! EW ANO. COMPLETED DATE ACCEPTANCE BY: STATlON REVIEW                                                                                                                   -
AS REOU I RED .
DATE*
RESOLUTION. APPROVED ANO
* I;L- IO-?fJ AUTHOR I ZED FOR* DI STR I BUTI ON                                                                                       DATE}}

Latest revision as of 13:34, 18 March 2020

LER 80-043/03L-0 for Dresden, Unit 2 Re Surveillance Testing of the Condenser Low Vacuum Switches, Pressure Switch 2-503D Was Found to Have a Trip Point of 22.85 Inches Hg
ML17252B538
Person / Time
Site: Dresden Constellation icon.png
Issue date: 12/03/1980
From: Scott D
Commonwealth Edison Co
To: James Keppler
NRC/RGN-III
References
DJS LTR 80-284 LER 80-043/03L-0
Download: ML17252B538 (3)
v • d • e


Text

'V I

CommonweaaEdison

/

Dresden Nuclear - r Station R.R. #1

"' Morris, Illinois 60450 Telephone 815/94?-2920 December 3, 1980 DJS LT~ /180-284 I"*

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-~

.~

~c~ *:~:__,

James 9. Keppler, Regional Director tu  ;;rJ.-;';

.::::  :.:~ c::f Directprate of Regulatory Operations - Region III ~-ic:

U.S. Nµclear Regulatory Commission zz---

-VI

>o_.,.  :° r>CJ l"' l;--

(/)~

799 Roosevelt Road 0(/)~ C:::>".J

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Glen Ellyn, IL 60137  :::0 -cc::

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Report'able Occurrence Report tf80-43/03L-0, .Docket 11050-237 is being-...&*

submitted to your office in accordance with Dresden Nuclear Power Statio,n Technical Specification 6.6.B.2. (a), reactor protection system or engineered safe.ty feature instrument settings which are found to be less conservative than those established by the technical speci-fications but which do not prevent the fulfillment of the functional requirements of affected systems.

D. J. Scott Station Superintendent Dresden Nuclear Power Station DJS:lg Enclo~ure cc:

I Director of Inspection & Enforcement I

pirector of Management.Information & Program Control

p. S. NRC, Document Mgt. Branch iFile/NRC A0 11~ \ '

/1 " '

DEC121J1)4

i

, *.* ~1. ~I Lll~SEE EVE,::::::::.oR TYPE ALL REouoRED 1NFORMAT10N1 co"il'rR,oLaLocK, I.... - - ' -I- - - I' " _.......__.___....._6 \.:J.

!ills 7

I i I LI n I RI s I 2 l@I o l*o I- Io lo lo* lo 9 LICENSEE' COOE . 14' 15.* LICENSE NUMBER.

10 b Io I o IG)l 4 11

' 25 26.'

11 11 11 101

  • I I LICENSE TYPE JO 57 CAT .58. ' '

i1!i 7 8

~~~i t_;:J©I 01s10*10 10 1213 60
  • 61 DOCKET NUMBER .

11 10111111131s1o1©1112 10 JS JB 10 I@

68* 69 EVENT DATE . 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@ *. *

[IJIJ 1 nuring the monthly survei11ance testin . of the condenser low vacuum swi t.ches, *pressure L

!TI[]. switch

  • 2-503D'. was found to. have 1

a trip. point of 22. 35* inches Hg*. This*is below*the I.

[]JIJ 1 Tech Spec (Tab*le 3: 1.1) limit. of greater than or equal to: 23 in. Hg. This event*was I

[))))

  • of minimal sa~ety significance since the other three vacuum switches were capable of 1

!TI[]. !performing th~ir required safety function. This is the first occurrence of this. type at Dresden.

ITIIJ

[ill]

7 8. 9 80 SYSTEM . , CAUSE. CAUSE COMP. VALVE CODE . CODE SUBCOOE, COMPONENT CODE SUBCOOE* suBCOOE

[§TI]:

7 8 I r1 Aj@ L:J@L:J@ I r1 NI s IT IR 1u I@ L..:J@ L.:J @.

9 10 . 11 12 1J 18 19 20 -

' SEQUENTIAL OCCURRENCE REPORT REVISION:

(.':;\ LEA/RO CVENT.YEAA:* REPORT NO. coos TYPE NO.

\:.:J ~~~~~~ I a, I 0 21 . 22 L I 23 I I 24 0 I 4I 3I 26 I..,.... L 27 I 0 13 2B l9 I ~

JO I. I 31 L..~..J 32

. e Li@l.:J@'.

ACT10N FUTURE EFFECT

  • SHUTDOWN . ~ ATTACHMENT NPR04* PRIME COMP. COMPONENT TAKEN ACTION *' ... 'ON PLANT . METHOD * . HOURS 22 . . SUBMITTED FOAM :>UB. SUPPLJ.EA M~NUFACT~AE'9 .

0 0

' J3 34 LtJ@

JS . .

L:J JS. .

I 37 I I0 I 40L* l::J@* ~

41 42 *

~@.

  • 43 44' 0

I I 1* I I@

47'

  • CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS @'. . .

O:[§] I 'This* event: cair be.*.attributed. ;to* .'iristrument -drift.** 'Pressure* switch 2-503D: was reset t*o L

[IJ:IJ j"trip at 23.75 inches Hg. vacuilm. The test was.repeated three times to prove operabili- 1 CIIIJ l ty. This surv.eillance will continue to be perf armed monthly. No further action .I o::.I]J...,_r_e_q_u_i_*r_e_d_._*--+.,.....-----------------------------------------------------------------'

IJJI]

7 8 9 FACILITY STATUS  % POWER OTHl;R STATUS l3c)\ . METHOD OF

\::;:J * . DISCOVERY

. . DISCOVERY .Q.ESCAIPTION 32 80.

!III] L:J@ Io I 4 I 7 l@)I .. NI A  !' ~@ I...___M_o_n_t_h_l_y_s_u_rv_e_:u._.L_a_n_c_e_ _ _ _ _ _~

7. a 9 10  : 12 11 44 45 46 80 ACTIVITY' CONTENT' ~

RELEASED OF RELcASE I AMOUNT OF ACTIVITY  :

r*

LOCATION OF RELEASE*@

ITEJ .LI@ L.:JI*

7 B *9* 10 11 NA * *

44. 46 N/A PERSONNEL EXPCSURES. , r.::;\

~UM~ER O (.;":;\:TYPE

[IE] 1* I I DESCRIPTION

~0~~------N_l A-..,..._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___, __

a g . 11 12 13

  • so PERSONNEL INJURIES . (,;'";\

NUMBER DESCRIPTION~

~7,* I Oj 01*01@~*-..,...--..,...--N-/_A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _~---~

79 9 11 12' LOSS OF OR OAMA9E TO FACI LJTY ~3 .

!30 TYPE DESCRIPTION I '

IiIDa 1

LJ@**

9 10

' ' A 80 PUBLICITY . ' C\ NRC USE ONLY rn l.EJ6 * *..

1

. ...,. ISSUEDl,;";\DESCRIPTION 8 9 10

~.'

'N/A~

68 I I I l I 1'11*1 I I I

'59 If 80*;;;

! ii.J. J.)..042.,i,.?~Ul X~9.

DEVIATION REPORl .9

,;** .* 'commo*nweatth* Edison*

'W . STA* UNff YEAR. NO; D.~ 12 - 2 ~so. - .73 OCCURRED*

it 2 Condenser* Low Vacuum Switch Below.Tech. s'pec. Limit 11-u:...so. 110.0 DATE TIME c SYSTEM AFFECTED *500 PLANT CONDITIONS . TESTING Reactor Protection System .Run 1207 366 C:Xl .CI MODE PWR MWT) LOAD MW-E). YES NO DESCRIPTION OF* EVENT.

Pressure switch 2-'503D as found'*set point of 22.85.inches.Hg; vacuum is belo~ the requried set point* of greater.than or equal to*23 inches *Hg.vacuum,set point.was checked three times and

  • tripped at 22.85. inches Hg*. vacuum each. time.

DESCRIPTION OF CAUSE

  • Set point drift ..

. OTHER APPL I CABLE \J'IFORMATl ON . * .

Reset switch to 23.75 Hg. vacuum* decreasing* and checked repeatability three times w:ith no change in setpo.fnt noted.

EQUIPMENT0Yes, CR NO. WR* NO. A. R'.

  • Zapatocky 11-13,..so FAILURE' DD NO 1n:SPriNSIBLE SUPERVISOR* DATE PART 2 I OPERATING ENGINEERS COMMENTS

. Kema1ning three switches were capable of performing_ the* required safety function.

SAFEn'-. * :1

. TYPE OF~ DEVl:A'Tl ON:* .. EVENT* OF*. POTENT.I AL .. **TECH" *SPEC.: NON*- REPORTABLE. ANNUAL RELATED

~

REPORTABLE :OCCURRENCE'-**. :

  • PUBL'f C' INTEREST'. VI OlATl ON***. OCCURRENCE. REPO'RTI NG. WR ISSUED .

D D t0'CFR2.1 *YES .

0 YES D'

-~

14. DAY 30 DAY o"*O!,'~F~S~TI

.6 . . ~a ON D o* D NO D NO w .

. REPORTABLE. CCCURR~NCE ACT.I ON ITEM NO.* PROMPT ON-SITE NOTIFICATICN NUMBER I R, -M. *Ragan 11/17/80 . 11:00 Tl TLE DATE TIME

~- 80-43/031-0',.  ; .. ..

/* Tl TLE DATE TIME '

24--HOURi NRC NOTIFICATION PROMPT .OFF- SITE NOTIFfCATION o*T?H N/A N/ fEGl,ON I I I DATE TIME F. A, Palmer Tl TLE 11/17/80 DATE 3:35 TIME o*TG'A.

REGION I I I & OOL CATE TIME Tl TLE DATE TIME RESPONSIBLE. COMPANY OFFICER INFORMED OF IOCFR21

,. CONDITIONS ANO THEIR REPORT TO NRC

  • DATE f I ME
  • . ..11/17

- /80 REV! EW ANO. COMPLETED DATE ACCEPTANCE BY: STATlON REVIEW -

AS REOU I RED .

DATE*

RESOLUTION. APPROVED ANO

  • I;L- IO-?fJ AUTHOR I ZED FOR* DI STR I BUTI ON DATE
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