ML19318C406

LER 80-065/03L-0:on 800430,four Fire Barrier Penetrations Discovered to Be Breeched Leading from Reactor Bldg to Emergency Gas Filter Treatment Sys Filter Room.Caused by Const Error

ML19318C406
Person / Time
Site:	Sequoyah
Issue date:	06/23/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19318C401	List: ML19318C400 ML19318C406
References
LER-80-065-03L, LER-80-65-3L, NUDOCS 8007010438
Download: ML19318C406 (2)

Text

- _

f]

\j , .

.  ?. 1 e.

e e, .

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT EXHIBIT A CONTROL OLOCK. ] I l l l l6 Ih I (PLE ASE PRINT OR TYPE ALL EEQUIRED INFOR*.tATIoNI O i I l 7 8 9

! T INLaCsNatt I S I Cuot N I P I14 II@'lo I o l l O lL604%k S

0 I oeef A'eid 01 O ! l o l OQ l@l26 ti l L6GENSE 111 l 111 TYPE JJl@l63 sadad@

CCv7 .

Lo_LJ E'.0' LLJ@lo I s ! of n I ol3 I 2 I 71@Lil.L4 J_.11.018 I ol@l 74 of 6 REPORT 75 I 213DAfI ga 1 Ol@ 43 8 -63 6' G <tTrVUtga e (4 63 EvtNT D ATE EVENT DESCRIPTf 0N AND PROSA9LE CONSECUENCES h IOf2i i Two 16 inch and two 20 inch mechanical nenetration fire barrier nenetratiorf,s

~ '

- ~ ~ " - - - ~

foT21 I were discovere[tS be branchad land 4ne Ernm va=< ene hi'41 di mr Mn-  ? inen ehJ

~

o A 1 emergency gas filter treatment system filter room. This area'contains umig ITTTl 11 safety related eouipment. These open penetrations degraded the fire I

~

g i barrier compartmentalization- for the ECTS room Under extremely adverse I o , [ conditions, had a fire developed in the unit 2 reactor building, it might I i o n i j have propogated into the EGTS room. I

'ScE *^is' Co sNCSe CovientsT Ceos sueTEe's sE?as ITrri I A I B l@ [Aj@ l E l@ 12 I Z lZ 12 l ZlZ l@

- , . . .o ,, ,,

SE duTNTI AL

,2 ..

OCCUsefNCE U,,

REPom?

@ (, Zj @ .RfvlS80N 2.

. to og (VENTVEAR PEPOA T NO. CODE Tvrt NO

..- @ .-(r,gpr 1810 l [--J 101615 l [f_J [2801329l LLJ 33 L-J 34 LEJ 32

_2' 22 23 24 26 27

'j

~

n'J7 "eWJ4 O'#tHT 5;GM' Av.s @ ^L^r? fs'

,o*!",it.. 'Tu"M,i%* f5'fs'uL LAJSlHJ@

JJ J6 Lg_l@

26 LZJ@

is l 0Io I O 10 3J 40 I l3J@

45 LN.1@

42 LZ J@ lZ 43 44 l 919 I 943 ff CAUSE DESCRIPTION AND CORREC flVE ACTIONS ITTT11 These penetrations are associated with reactor buildine No. 2 and were I g ievidently omitted by Construction as a unit I requirement due to location.I gi These penetrations are in the process of being placed into functional I g i status on our MR's 098760, 098761, 098762 and 098763. This will be i m

, , i completed by June 13, 1980. -

l 1 i s , es

'5 T  % POWER CTMER$TATuS 50 Y Ot$COVCRY DESCni8 TION i b LBj @ l0l OIO l@l N/A l LB.j@lEngineer'sobservation l ACTivlT V CO f traf AYQT;T CF ACTiveTY LOCAT'ON CF pf LEA $t HELEAt!O 18 ' C LC A5S I i G N/A l -l M/A l L,21 @ L,.Z.J@L,, .. 4 ..

P(n-ry.NEL g yrcysset g 99"S t p Tv78 CC0Cf'IPT'O's -

i i l01010l@Lg_j@l N/A I

,i..sO. ...

. 't miuZts Ne,vttn OtsCsttPTIO's ,

E I of 0 lo !@l 7 E 3 i3 I .'

N/A .

J N

.' 'Ui "iEEPE"'"" O i

I ITTTI LZ_lSleJ N/A N y n y

'uflL118 3 Y Nf'.c UTf. 8#3L Y

'at'/.It.P t :0?a ' '

2 . g sg

..mr*$l . N/A I I I l'I I I I ' l I I I I 68 69

• N' p .g g NAVF CF Pf tLPAfQft PHON E:

l 8007010 g

~ - *

. I

^

Tennessee Valley Authority Sequoyah Nuclear Plant LER SUPPLEMENTAL INFORMATION SQRO-50-327/8065 Technical Specification Involved 3/4.7.12 Reported Under Technical Specification Sections 3.7.12 and 6.9.2 Date of Occurrence: 4/30/80 Time of Occurrence: 1530 hours0.0177 days <br />0.425 hours <br />0.00253 weeks <br />5.82165e-4 months <br /> Unit 1 Identification and Description of Occurrences

,. , ,,5 ;

Four (4) mechanical penetrations passing through a fire zone boundary leading into the emergency gas filter treatment system filter room in the auxiliary building were discovered to be breached. This room contains. equipment which

• • is safety-related for unit 1.

' Condition Prior to Occurrence Unit 1 in Mode 5 _

Action specified in the Technical Specification met due to inoperable equipment.

Describe. ,

Within one (1) hour following discovery of the condition it was verified that the fire detection system was functional on one side of the fire barrier and hourly fire watch coverage was verified as required by LCO Action Statement 3.7.12. These requirements shall be met until repairs are completed and the penetration fire barriers verified as restored to functional condition as required by SR 4.7.12.b.

Apparent Cause of Occurrence These penetrations are associated with reactor building No. 2 and were evidently a* omitted by Construction as being a requirement for unit I due to their location.

.t Analysis of Occurrence mn .

There was no hazard to public health or safety.

~

Corrective Action c All four (4) mechanical penetration will be repaired and verified as functional as required by SR 4.7.12.b by June 13, 1980

{lt Failuro Date 3;

s .

N/A h

"dO,*f #

_ _