ML20050B012

LER 82-013/03L-0:on 820302,control Switch for Containment Pressure Equalization Fan in Stop & Backdraft Damper for Opposite Fan Was Open.Cause Could Not Be Determined.Startup Procedures Revised

ML20050B012
Person / Time
Site:	Cook
Issue date:	03/24/1982
From:	Don Krause INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20050A961	List: ML20050A960 ML20050A968 ML20050B001 ML20050B012
References
LER-82-013-03L-01, LER-82-13-3L-1, NUDOCS 8204020497
Download: ML20050B012 (2)

Text

NRC FORM 3GG U. S. NUCLEAR REGULATORY COMMISSION (7 77)

• 1 , ,

LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l (PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATION) i IO lil l M I I I D I C I C I 11@l 010101010101010101010 I d 9 LICE'JSEE CODE 14 lb LICENSE NUMtiLH 2dl@l 411LICENSE 26 1111111@l TYPE JO l

57 L A T $8 l@

COvT IoIiI J d

'E"C S l60L l@l61 0 l 5 lDOCKET 0 l 010 NUMBE R l 3 l 115 68 l@l b3 0 lEVENT 310DATE l 2 l 8 l 2 l@l0REPORT 14 75 l 3 l2DATE l4 l 8 80l 2 l@

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 lWHILE PERFORMING ROUTINE CONTROL BOARD CHECKS OPERATOR FOUND THE CONTROL SWITCH FOR I lo ia l l THE CCNTAINMENT PRESSURE EQUALIZATION (CEQ) FAN IN STOP AND THE BACKDRAFT DAMPER FOR I l

t I o i41 1 THE OPPOSITE FAN WAS OPEN. THE FAN WOULD NOT HAVE STARTED AUTOMATICALLY lo MINUTFS lo isi IAFTER RECEIPT OF A CONTAINMENT ISOLATION PHASE B SIGNAL. THE ABILITY TO MANUALLY I  ;

(SEE SUPPLEMENT) I IO la l l START THE FAN WAS NOT IMPAIRED.  ;

l0 l7 l l l I

10181I 80 l 7 8 9 '

SYSTEM CAUSE CAUSE COVP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE 10l91 1 S l H l@ LD_J@ l Z l@ lC lK lT lB lR lK l@ l E l@ l20Zl @ f i 8 9 10 11 12 13 18 19 Lgn no lVENT YE AR REPORT O CODE Y N

@ agg 1812 l l-l l0lll3l l/l l 0l 3l _

lLl l-l l 0l ,

_ 21 22 23 24 26 21 28 29 30 31 32 [

TAKE 4 ACTI 04PL NT T HOURS 22 S B IT D FO tb B. SUPPLIE MAN F CTURER -

lGl@lZl@

3J J4 lZl@

35 l36Z l@ 1010 l010 l J1 40

[Y_J 41

@ [N_j@

42 lZl@ lZl9l9l9l@ l 43 44 47  !

CAUSE DESCRIPTION AND CORPECTIVE ACTIONS h IitolIIT COULD NOT BE DETERMINED WHEN THE CONTROL SWITCH WAS PLACED IN STOP. THE BACKDRAFT I I

Iiiii l DAMPER FOR THE OTHER FAN BEING IN THE OPEN POSITION HAD NO EFFECT ON ITS OPERABILITY ,

i,,,i lAS IT MOVED TO THE CLOSED PGSITION WHEN THE TEST SWITCH WAS PLACED IN TEST. STARTUP l ;

i ii i,i j PROCEDURES WERE REVISED TO VERIFY CONTROL SWITCH POSITION PRIOR TO CHANGING TO MODE 4 1 f I1 14I (_ l I STS$5  % POWE R OTHER STATUS IS O RY DISCOVERY DESCRIPTION IilSI LcJ @ lo Io Io l @ l NA l [3_J@l OPERATOR OBSERVATION l  ;

A TiVITY CO TENT RELEASE D OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE ,

lilclLlj@lZl@l NA l l NA l 44 45 80 l

7 8 9 to 11 }

PERSONNEL E XPOSUMES ,

NOUBE R TYPE DESCH4PTION -

i i l 010l 0l@l Zl@l NA so l (

' " ' ,E RsONNE 2 L ,~iu'a,,,

i2 NUMu n nESCntPnO~@  ;

i 4 l 0101 Ol@l NA l 7 8 9 11 12 80 i

' ' " ^" ' t T l'E ESC MiON ' " " @

NA l 1

i 9 3 9 l ZI@l10 80 Pm ici"

' " "'"" "@ B204020477 820324 NRC USE ONLY j,joj gg DR ADOCK 05000 , yy,y y9y g i M 9 10 G8 69 80 5 I NAME OF PREPARER PHONE: (616) 465-5901 ext.1097 2

SUPPLEMENT TO 82-013/03L-0

10) EVENT DESCRIPTION AND PROBABLE CONSEQUENCES-WHILE PERFORMING ROUTINE CONTROL BOARD CHECKS OPERATOR FOUND THE CONTROL SWITCH FOR THE CONTAINMENT PRESSURE EQUALIZATION (CEQ) FAN IN STOP AND THE BACKDRAFT DAMPER FOR THE OPPOSITE FAN WAS OPEN.

THE FAN WOULD NOT HAVE STARTED AUTOMATICALLY 10 MINUTES AFTER RECEIPT OF A CONTAINMENT ISOLATION PHASE B SIGNAL. THE ABILITY TO MANUALLY START THE FAN WAS NOT IMPAIRED. THE ACTION STATEMENT OF T.S. 3.6.5.6 ALLOWS THIS CONDITION TO EXIST FOR 72 HOURS IN MODES 1, 2, 3 AND 4. THIS TIME LIMIT WAS NOT EXCEEDED, HOWEVER, THE REQUIREMENT OF T.S. 3.0.4 " APPLICABILITY" NOT TO RELY UPON PROVISIONS OF THE ACTION STATEMENT TO CHANGE MODES WAS EXCEEDED AS MODE 4 WAS ENTERED WITH THE SWITCH IN THE STOP POSITION. THE OPERABILITY OF THE OPPOSITE FAN WAS NOT AFFECTED BY ITS DAMPER BEING IN THE OPEN POSITION AS IT WOULD HAVE RETURNED TO THE CLOSED POSITION IF IT WAS EXPOSED TO A BACKPRESSURE, AS WAS SUBSEQUENTLY VERIFIED THROUGH USE OF ITS TEST SWITCH.