ML19031B564

LER 1977-032-01 for Salem Unit 1 Inadequate Air Flow Through No. 11 HEPA Train

ML19031B564
Person / Time
Site:	Salem
Issue date:	05/13/1977
From:	Schneider F Public Service Electric & Gas Co
To:	O'Reilly J NRC/IE, NRC Region 1
References
LER 1977-032-01
Download: ML19031B564 (4)

Text

l Frederick W. Schneider Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 201/622-7000 Vice President Production May 13, 1977 Mr. James P. O'Reilly Director of USNRC Off ice of Inspections and Enforcements Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. O'Reilly:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 77-32/03L

• \

Pursuant to the requirements of Salem Generating Station un*i t No. 1 Technical Specifications, Section 6.9.1, we are submitting Licensee Event Report for Reportable Occurrence 77-32/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours, CC: Director, Office of Inspection and Enforcement (30 copies)

Director, Office of Management Information and Program Control (3 copies)

Report Number: e-32/03L

.I

~epor-t Date: 5/4/77 Occurrence Date: 4/25/77 Facility: Salem Generating Station Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 11. HEPA Exhaust Filter Air Flow less than allowed by Technical Specification.

CONDITIONS PRIOR TO OCCURRENCE:

Unit in Mode 1 DESCRIPTION OF OCCURRENCE:

At 1230 hours0.0142 days <br />0.342 hours <br />0.00203 weeks <br />4.68015e-4 months <br />, during testing on the Auxiliary Building Exhaust system, it was found that the air flow through NG. 11 HEPA filter was 14,877 cfm.

Technical Specifications require 21,400 cfm + 10%. Action Statement (a) for LCO 3.7.7.1 was implemented.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Low air flow was caused by hi differential pressure across the 11 filter train roughing filters. No. 13 damper was also slightly out of adjustment.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.7.7.1 allows 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to restore an inoperable HEPA filter train. No. 11 HEPA train was returned to service within the allowed time. At no time was there any danger to the general public or site personnel.

CORRECTIVE ACTION:

All roughing filters in the No. 11 filter train were replaced. No. 13 damper was adjusted. Air flow was then measured and found to be within the Tech Spec value. The.Action Statement was* terminated at 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> on.4/26/77.

FAILURE DATA:

Not Applicable Prepared by T. Spencer Manager - Sale'IIlGeilerating Station SORC Meeting No. 48-77

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LER 77~32/03L 5/4/77

,. LICENSEE EVENT REPORT CONTROL BLOCK 6

LICENSEE LICENSE EVENT NAME LICENSE NUMBER TVP£ TVPE REPORT REPORT CATEGORY Tvn SOURCE COCKET NUMBER EVENT CATE REPORT CATE

~CON'T~; !OJ l~I l~I ~p I 51 0 I -I 0 I 2 I 71 2J 1014121517171 69 74 I 0 15 I 0 14 17 75

!7J EVENT OESCAIPTlON

@:§]I During Mode 1 operation, it was discovered that air flow through No. 11 I 7 8 9 eo

@:I!l,~~--~---~--___.;.:.;.____.;_.:,....:..:....~~~--..!..-~---___.;~----~~

HEPA train was less than required by Tech Specs. No. 12 HEPA train was 7

@El, ........operable but air flow does not meet minimum requirements.

7 ~~~~~~~~~~~~~~~~~~~~~.;.._~~~~~~~~~~__.,,

Rd.ughing

[fil!JI were replaced and damper adjusted. This is the first occurrence of this I 7 8 9 eo

~I 7 8 9 type. (77-32/03L)

PRIME eo r

SYSTEM CAUSE COMPONENT COMPONENT

. COCE COCE COMPONENT COCE SUP9UER MANUFACTURER VIOLATION

@lil1x1x1 L£J I F I I I L I T I EJ_ RI l1!..I IZ 19 19 I 91 lNJ 7 8 9 10 11 1'2 17 43 4" 47 48 CAUSC CESCAIPTION

~I Dirt on roughing filter caused hi differential pressure- and low air flow. I 9

~1 No. 13 damper also required slight adjustment. j 1 &9 eo

[IT§]

1 a~9~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~---~~eo~

!l"P.CILITY . METMOOOF r.r.'t STATUS ... POWER OTHER STATUS OISCOVERV 015COVERY OE3CRIPTION

~- l..EJ. IO I 8 l-61 l.__--"'N"""/...._A.___ ___.I *@.! N/A 7 IJ 9 10 1'2 13 44 45 so

!"ORM OF ACTIVITY CONTENT REL.EASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF REL.EASE GE8 7 9 w w10 I

11 N/A 44 I 'L.-:-~~~---.~N~./=A---'~,__,__,__,__~l

~ so PERSONNEL EXPOSURES r.T:f NUMUR TYPE CESCRIPTION

~lOIO!OI LZJ ~'~~--=N~/~A""--~~~~~~~~~~~~~~~--.-.iJ 7 8 9 11 1'2 13 so PERSONNEL INJURIES NUMBER DESCRIPTION

(!'EJIOIO!OI ~lr--,_____,,__---'N=/~A:.=.-___,___,___,___,___,___,___,___,___,___,___,___,___,___,___,___,_,,.,jl 1 a§ h 12 eo OFFSITE CONSEQUENCES

~19 .. N/A LOSS OR OAMAQE TO FAClLl1'Y TVP!: OESCAIPTION l1'ali;J ~~o~~~~~~~N~/A=-~~~~~~~~~~~~~~~_,.,,J PUBLICITY (ill]

7 8~9~~~~~~~~~~~~u..i:....o.~~~~~~~~~~~~~~~~~~~~~~~--I AOOITIONAL FAC1'0RS l.Irn]~~~-~~~~~~-N~/A~~~~~~~--~~~-------~-=1 1 a9 so

!Ii!lt;:-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--....1 1 a9 an PHONE: ( 6 0 9) 3-65-7 0 0 0 Ext. Salem-52t

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RECEIVED OOCUMDIT PROCESSING Ul~lT 19T7 MAY 19 flM 9 12

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