ML19290D643

LER 80-002/03L-0:on 800111,while Performing in-place Charcoal Absorber Leak Rate Test on Standby Gas Treatment sys,1.93% Leakage Found.Caused by Damaged Gasket on 4x4 Inch Access Plate.Gasket Replaced

ML19290D643
Person / Time
Site:	Quad Cities
Issue date:	02/07/1980
From:	Kan S COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19290D638	List: ML19290D637 ML19290D643
References
LER-80-002-03L-02, LER-80-2-3L-2, NUDOCS 8002220445
Download: ML19290D643 (1)

Text

M 366 U. S. NUCLEAR REGULATORY COMMISSION i

LICENSEE EVENT REPORT NTROL BLOCK:

1 l l l l l 6

lh (PLEASE PRINT OR TYPE ALL REQUf RED INFORMATION)

ITI l 8I 9il t 1 LICENSEE 7

0 l A lCODE 0 l 1 l@l 14 0 l 0 l 0 l - l LICENSE 15 0 l 0NUMBEM l 0 l- l0 l0 l0 l@l 25 426 l 1 LICENSE l 1 l 1TYPE l 1JOl@l$7LATSdl l@

CON'T lelil 7 8

%',"C (4

Ll@l015l0l0l0121514l@l011 61 DOCKET NUM8 ER eid 63 11EVENT 11 DATE 18 lo l@l 0121REPORT 74  ?$

ol 7181 DATE o80l@

EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES h IOTT1I While performina the Standby Gas Treatment System inolace Charcoal Adsorber leak o a l Rate Test, procedure QTS 160-2, the 1/2-B-7509 Standby Gas Treatment System (SBGT) l l0 l4 l l charcoal bed was found to have a leakage of 1.93% which was in excess of the 1 o s l Technical Specification 3.7.B.2.a.2 1% allowable penetration. Each of the two SBGT l l0 l6 Ll systems has a 100t, flow capacity, thus only one system is needed to maintain l

[O l7] l secondary containment integrity. The 1/2 A SBGT system was demonstrated operable 1 o 4 l prior to the test. 1 DE CODE SUSC E CcMPONENrCODE SU8 CODE SU E lTTT] l Ml B j@ lE l@ lB l@ F l l l L l T l E l R [@ y@ l Zl @ '

7 8 9 10 11 12 13 18 19 .O

_ SEQUENTI AL OCCURRENCE REPORT REVISION gg EVENT YEAR REPORT NO. CODE TYPE NO.

@ s(rg,po a t la In I l-l l0 10121 1/ 0laI Lt_J l-J LO_1

_ 21 22 2J 24 26 27 28 23 30 31 J2 K N AC 0 ON PL NT ME HOURS S8 IT FOR 8. SUP LIE MANUFACTURER

(_A_j@[_Z_j@ Zl@ lZ@ l 0l 0l 0 Ol 37 W@ lNl@ lNl@ B l 0 l 7 1547 l@

33 34 35 J6 40 41 42 43 44 CAUSE DESCRIPTION AND CORRECTIVE ACHONS h i o l An inspection revealed a damaged casket on a 4 X 4 inch access olate. The nasket I i i l was replaced and a second test was performed satisfactorily. The charcoal I gl adsorbent itself was intact and functional, i 1 3 l l i 4 l l 7 8 9 80 STA S  % POWER OTHERSTATUS DIS O HY DISCOVERY 0ESCRIPTION Q l El@ l 0 l 9 l 7 l@l NA l lBl@l Routine Test l ACTivtTY CO TENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELE ASE 1 6 l Zl @ l Z lg NA l l NA l 7 as 9 to i 44 45 80 PERSONNEL EXPOSURES NUM8ER TYPE DE SCRIPTION NA

• 7 10 l 0 l0 l@l Z l@l l PERSONNE L INJUHIES NUM8ER DESCRIPTION i a 0 l 0 l0 lgl NA l 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY h h y,,200 7

, o 8 9

""Zjg l ' "'"' '

10 NA Y(( 80 l

PU 8 L ICIT Y NRC USE ONLY ISSU E D DESCRIPTION

• E LN_j@l NA -

l lllllllllllll2 7 8 9 10 68 69 80. .

NAME OF PREPARER S . Ka n PHONE: 309-654-2241 Ext. 174 2,