ML18283B453

LER 1976-018-00 for Browns Ferry, Unit 3, Torus Oxygen Sensor Failed to Respond Properly to Calibration Gas While Performing Surveillance Test During Startup Testing

ML18283B453
Person / Time
Site:	Browns Ferry
Issue date:	12/16/1976
From:	Fox H Tennessee Valley Authority
To:	Moseley N NRC/RGN-II
References
LER 1976-018-00
Download: ML18283B453 (15)

Text

NRC F.uRM -'I85 U.S. NUCLEAR REGUI.ATORY COIAi "iSS ION DOCKET NUMGER I2 7GI ' 50-296 FILF NUMBER NRC DISTRIBUTION FDR PARl GO OOCKET IVIATERIAL XNCIDENT REPORT TO: N.C. MOSELEY FROM: TENNESSEE VALLEY AUTHORITY DATC OF DOCUMENT CHATTANOOGA, TENN. 12-1 H.ST FOX DATE RECEIVED 12-20-76 QLETTER C3 NOT OR IZ E D PR,OP INPUT FORM NUMBER OF COPIES RECEIVED Rl ORIGINAL SUNCLASSIF IED 0 COPY DESCRIPTION LTR. TRANS THE FOLLOWING.......'NCLOSURE LICENSEE EVENT REPORT FOR R.O. /j 7618, ON 11-17 76, CONCERNING THE TORUS OXYGEN SENSOR FAILING TO START DURING TESTING......

( 1 SIGNED CY. RECEIVED)

( 2 PAGES)

PLANT NAME: BROWNS FERRY /33

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NOTE: XF PERSONNEL EXPOSURE IS XNVOLVED SEND DXRECTLY TO KPZGER/J, COLLINS FOR ACTION/INFORIVIATION BRANCH CHIEF: STOLZ W 3 CYS FOR ACTION LXC~ ASSTo: LEE W CYS ACRS 16 CYS lcm S NT IN TE R MAL D I ST R I BUTION NRC PDR I &E 2 MIPC SCHROEDER/XPPOLXTO HOUSTON NOVAK/CHECK GRIMES CASE BUTLER HANAUER TEDESCO/MACCARY EISENHUT SHAO VOLL>IER/BUNCH KREGER/Jo COLLXNS EXTERNAL DISTRIBUTION CONTROL NUI4IBER LPDR: LA.

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oiuTio+ Repifatorg n j' TENNESSEE VALLEY AUTHORITY m

CHATTANOOGA. TENNESSEE 37401 b 4e~

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December'6, 1976 oo~

llsH o Mx. Norman C. Moseley, Director U.S. Nuclear Regulatory Commissio I; -,QQ)87g~

Office of Xns P ection and Enforcemc t >.@i~"

Region II b 230 Peachtree Street, Ãl.,'8th Floor Atlanta, Georgia 30303

Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY BROMHS FERRY NUCLEAR PLANT UNIT 3-DOCKET NOo 50-296 - FACILITY'PERATING LICENSE DPR-68 - REPORTABLE OCCURRENCE REPORT BFRO-50-296/7618 The enclosed report is to provide details concerning the torus oxygen sensor that failed to respond properly to calibration gas while performing a surveillance test during startup testing. This report is submitted in accordance with Browne Ferry Technical Specifications Section 6.

This event occurred on Browne Ferry Nuclear Plant unit 3 ~

Very truly youx's, TENNESSEE VALLEY AUTHORITY H, S, Fox Director of Power Px'oduction Enclosure (3)

CC (Enclosure):

Director (3)

Office of Managem nt Information and Program Control U.S. Nuclear Reg latory Commission Washington, D.C 20555 Dixector 40 Office of Inspection and Enforcement U.S. Nuc'lear Regulatory Commission Hashington, D.C. 20555 An Equal Opportunity Employer

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Mr. Norman C. Moseley, Director U.ST Nuclear Regulatory Commission Office of'nspection and Enforcement Region II 230 Peachtree Street, NM., 8th Floor Atlanta, Georgia 30303

Dear Mr. Moseley:

TRtNESSEE VALLEY AUTHORITY BROftNS FERRY NUCLEAR PLANT UNIT 3-DOCKET NO, 50-296 FACILITY OPERATING LICENSE DPR-68 REPORTABLE .

OCCURRENCE REPORT BFRO-50-296/7618 The enclosed report is to provide details concerning the torus oxygen sensor that failed to respond properly to calibration gas while performing a surveillance test during startup testing. This report is submitted in accordance with Browne Ferry Technical Specifications Section 6.

This event occurred on Browns Ferry Nuclear Plant unit 3.

Very truly yours, TENNESSEE VALLEY AUTHORITY H. S. Fox Director of Power Production Enclosure (3)

CC (Enclosure):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Reg'latory Commission Washington, D.C 20555 4

Office of Inspection and Enforcement U.ST Nuclear Regulatory Commission washington, D.C. 20555 f8864 An Equal Opportunity Employer

LtgEggEEcvENT REPORT CONTROL BLOCK: )

I CASE PRINT ALI REGUIREO INFORh1ATION) .

6 LICENSE EVEt4T LICENSEE TYPE LFCENSE NUMBEA TYPE I A L,R NAME

-ii 3' 0 I 0 0 0 0 0 0 0 4 1 Il 1 1 ~03 32

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7 69 14 15 25 26 . 30 31 REPORT REPORT DATE CATEGORY TYPE 'SOURCE DOCKET NUMBER EVENT DATE 6'EPORT

~0) CON'l . 1, 0 5 0 0 2 9 1 7 7 6 57 58 59 60 61 68 69 ~

. 74 75 80 8 .

EVENT OESCRIPTION

,"l7 During startup testing the torus oxygen sensor failed to respond properly to calibra-7 8 9 80 as while erformin

)'ion a surveillance test. The redundant vd 80 7

89'perable. 'his is a repetitiv'e problem. Inspection of sensor and calibration piston 8 9 80 requires shutdown within 30 days to determine cause ~ BFRO-50-296/7618 89 80 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT

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'DCE CODE, VCIATCN COMPONENT CODE SUPPUcA MAt4JFACTUAEA

~I=I7 T. N S U ~N 0 8 0 7 8 9 10 11 12 17 43 44 47 CAUS:. CESCRIPTION NA

@8 7 8 80 Q

8 80 7 9 80 FAN.ITY METHOD OF STATUS POWER OTHER STATUS DISCOVERY DISCOVERY OESCAIPTtDN

. ~o ~ov NA Surveillance Test 80 7 9 9 . 10 12 13 44 as ,

a6 FOAM OF A>>TIVITV CONTENT REEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Z Z NA NA 7, 8 9 10 11, 44 as PERSONNEL EXPOSURES N) )MB-A TYPE DESCRIPTION NA LoJ eLaJ L~J 80 8 9 11 12 13 PERSONNEL INJURIES

~oo I o NA 8 9

• 11 12 80 OFFSITE CONSEQUENCES Q~g NA 7 89 80 LOSS OR OAMAGE TO FACILITY TYPE DESCRIPTION 7 8.9 10 80 PUBLICITY NA 7 89 80 AOOITIONAL FACTORS NA 80 0 9 NAME:

NA PHONE'0,

TENNESSEE VALLEY AUTHORITY CHATTANOOGA, TENNESSEE 37401 0

December 16, 1976 Mr. Norman C. Moseley, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 230 Peachtree Street, NW., 8th Floor Atlanta, Georgia 30303

Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLANT UNIT 3-DOCKET NO. 50-296 FACILITY OPERATING LICENSE DPR-68 REPORTABLE OCCURRENCE REPORT BFRO-50-296/7618 S'.

The enclosed report is to provide details concerning the torus oxygen sensor that failed to respond properly to calibration gas while performing a surveillance test during startup testing. This report is submitted in accordance with Browns Ferry Technical Specifications Section 6.

This event occurred on Browns Ferry Nuclear Plant unit 3.

Very truly yours, TENNESSEE VALLEY AUTHORITY H. S. Fox Director of Power Production Enclosure (3)

CC (Enclosure):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Director (40)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 An Equal Opportunity Employer

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4 TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 87401 December 14, 1976 Mr. Norman C. Moseley, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 230 Peachtree Street, NW., 8th Floor Atlanta, Georgia 30303

Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNIT 3-DOCKET NO. 50-296 FACILITY OPERATING LICENSE DPR-68 REPORTABLE OCCURRENCE REPORT BFRO-50-296/7619 The enclosed report is to provide details concerning start circuit 1 of D/G 3D that was found inoperable because of a relay failure in the speed sensing circuit during the performance of a scheduled maintenance test. This report is submitted in accordance with Browns Ferry Technical Specifications Section 6. This event occurred on Browns Ferry Nuclear Plant unit 3.

Very truly yours, TENNESSEE LEY AUTHORITY H. S. Fox Director of Power Production Enclosure (3)

CC (Enclosure):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Director (40)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 An Equal Opportunity Employer

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~ ~ "~ 'ONTROL BLOCK:

4 (PLEASE PRITJT ALL REOUIRED INFORMATION) 1 6 LICENSEE LICENSE EVENT NAME LCENSE NUMBER

• TYPE TYPE Jog A L B o P 3 0 0 0 0 0 0 0 0 0 4 1 1 1 1

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7 09 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE O0CK ET N UMGER EVENT DATE REPORT OA ~ E

~a~ coMT L L 0 5 0 0 2 9 6 1 1 2 6 7 6 7 8 57 58 59, 60 61 68 69 74 75 80 EVENT OESCRIPTION .

[@gal f During the performance of a scheduled maintenance test, start circuit 1 of D/G .3D was 8 9 80

~03 found ino erable because of a rela failure in the s eed sensin ci cuit 7

@04 redundant st:art circuit 2 was operable. The relay was replaced. (BPRO-50-296/7619) 7 8 9 7 8 9 80 Jog 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT COBE COOE COMPONENT COOS SUPPUER MANUFACTURER

~a~ ~za Z R E L A Y X 44 E 1 6 0 7 8 9 10 11 -

12 17 43 47 48 CAUSE OESCRIPTION

~0 0 An Electromotive Division model 8327263 rela failed in start circuit 1 s eed 7 8 9 80 CG sensin circuit reventin the circui't from sensin diesel s eed 7 8 9 80

~10 I was replaced and the test in progress was completed.

7 0 9 80 FACILITY METHOD OF STATUS 46 POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION o ~oui 5 NA 7 8 9 10 12 13 44 45 46 80 FORM OF NA'MOUNT ACTIVITY CONTENT RELEASEO OF RELEASE OF ACTIVITY LOCATION OF RELEASE NA NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES 9 11 12 13 80 PERSONNEL INJURIES I~oo o 7 8 9 11 12 OFFSITE CONSEQUENCES KJ 00 "

LOSS OR OAMAGE TO FACILII'Y TYPE OESCRIPTION

~16 Z 7 89 10 80 PUBLICITY 7 8 9 80 AOOITIONAL FACTORS

$ 89 10 This was a random failure and no additional action is re uired.

7 80 NAME: PHONE'0

Tennessee Valley Authority Docket No. 50-296 Browns Ferry Unit 3 License No. DPR-68 REPORTABLE OCCURRENCE REPORT NOS:

RO-296/76-18 76-19 DISTRIBUTION:

)Don Lanham, ADM cc With Enclosures Region II Docket Files 50-296 Region II Inspector with enclosures

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