ML18283B419

LER 1977-015-00 for Browns Ferry Nuclear Plant, Unit 3, HPCI Turbine Speed Controller Would Not Control Turbine During Surveillance Testing

ML18283B419
Person / Time
Site:	Browns Ferry
Issue date:	09/19/1977
From:	Fox H Tennessee Valley Authority
To:	O'Reilly J NRC/IE, NRC/RGN-II
References
LER 1977-015-00
Download: ML18283B419 (11)

Text

0 REGULATORY INFORMATION DISTRIBUTION SYSTEM < RIDS)

DISTRIBUTION FOR INCOMING MATERIAL 50-296 REC: OREILLY J P ORG: FOX H S DOCDATE: 09/19/77 NRC TN VALLEY AUTH DATE RCVD: 02/22/78 DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED

'UBJECT: LTR 1 ENCL 1 LICENSEE EVENT REPT'O'0 296 CONCERNING THE HPCI TURBINE SPEED CONTROLLER WHICH WOULD NOT CONTROL THE TURBINE DURING SURVEILLANCE TESTING...

PLANT NAME:BROWNS FERRY UNIT 3 REVIEWER INITIAL: XRL DISTRIBUTOR INITIAL;

.<<<<<<<<<<<<<<<<+ DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS LER < BACKFIT)

(DISTRIBUTION CODE FO INTERNAL: CL NRC PDR<<W/ENCL I 0 E~~~W/2 ENCL EXTERNAL: LPDR'S ATHENS'L<<W/ENCL T I C<<W/ENCL ACRS CAT B<<W/0 ENCL DISTRIBUTION: LTR 6 ENCL 6 CONTROL NBR: 780530225

'SIZE: 1P+1P+3P THE END <<~4<<<<<<<<<<<<<<<<~<<<<<<~~<<<<~%

f' e

4 TENNESSEE VALLEY AUTHORiTY CHATTANOOGA. TENNESSEE 37401 Mr. James P. O'R ly, Dire'ctor U~S Nuclear RQ ulatory Commission

~

Office of Ins ction and Enfox'cement Reg'ion XI 230 Peachtr e Street,;iU., Suite 3217 Atlanta - orgia 30303 Deax Mr 0'a 1 ~

illy:

TENNESSEE VALLEY AUTHORITY BROLiNS FERRY NUCLEAR PLANT UNIT 3 DOCKET NO ~ 50-296 FACILITY OPERATINQ LICENSE DPR-68 REPORTABLE OCCURRENCE REPORT BFRO-50-296/77/5 The enclosed report provides details concerning the HPCI turbine

.speed controller which would not control 'the turbine dur'ing surveillance testing. This report is submitted in accordance with

.Browns Ferry unit 3 Technical Specifications, Section 6.7.2.n(2) ~

Vex'y truly. yours, TENNESSEE 'VALLEY AUTHORITY

~ h H S ~ Fox Dixector of Power Production K[gg')Il Ogtr~It F0~ <Op~

Enclosure (3) cc (Enclosure):

Director (3)

Office of Management Information;and,.Pro ram Control

.U.:S ~ 'Nuclear Regulatory Corned,ssion 0

Director (40)

Office of Inspection and Enforcement U.ST Nuclear Regulatory Commission Vashington, D.C. 20555 P U

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V Oo An Equal Opportunity Employer

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LNSEE EVENT REPORT.'

CONTROL BLOCK: (PLEASE PRINT ALL REOUIREO INFORIVIATIOBtg 1 6 LCENSEE LCENSE EVENT NAME LICENSE NUMBER TYPE TYPE

[os 'A'I L 0 0 0 0 4 ~o B R P 3

'5 Ol

.. 0 0 0 0 1 1 1 1

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7 89 14 25 26 30 31 REPORT REPORT 32'EPORT CATEGORY TYPE SOURCE OOC K ET NUMBE EVENT CATE Nnt-,

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~01 CON'7 L ~L " 0 5 0 2 9 6 0 8 3 0- n 9 1 Fi. 7 7 7 8 57 58 59 60 61 68 69 74 75 80*,

EVENT OESCRIPTION

~02 SEE ATTACHED SHEET) 7 89 80 89 80 7-o8 9 LoOg 7 8'9

~06 7 89 ~E 80 SYSTEM CAUSE COMPONENT COMPONENT COOE COOE COMPONENT COOE SUPPUER MANUFACTURER VOLATION 7

KI8 9LCLLl 10 M11 12 17

~N 43 44 W 2 9 0 47 N

48 CAUSE OESCRIPTION

~0 8 The dropping resistor. assembly (Woodward Part No..8270-282) which supplies power 7 ~89 80

[OD~] to the Woodward overnor failed due to an opened resistor.

7 89 80

[iso]

7 80 8.9'3 METHOO OF OISCOVERY ~ OICOVERY'ESCRIPTION 7 8

'tzJ 9

~aLzl 10 12 13 44 B

45 46 N A 80 fORM OF ACTMTY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Qg ~a ~a N/A N/A 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES CG3 LQLZLQJ lKJ 7 89 11 12 13 80

'PERSONNEL INJURIES NUMBER OESCRIPTION

[i+~ ~oo N/A

'/A 7 89 11 12 80 OFFSITE CONSEQUENCES Qs] N A 7 89 80 "LOSS OR OAMAGE TO FACILITY .

TYPE OESCRIPTION Q1] ~8

~ 7 89 10 80

~ PUBLICITY Q~~] N/A 7 89 80 AOOITIONAL FACTORS Qe] '/A 7 89 80 7 89 80 NAME: PHONE:

GPO II41 ~ 447

EUENT DESCRIPTION 4

During surveillance*thsting, the AtCE turoine speed controller would'not control the turbine. The controller was repaired and returned to service prior to completing al'he backup system testing required by section 3.5.E.2 of the limiting conditions.~

of operation in the technical specifications; therefore, only the CSS and RHR (LPCI) tests were completed. This is a repetitive occurrence. (BFRO-50-296/7715)

MAR:SSN 9/15/77

~ J

/ V Llt SEE EVENT REPORT 1

CONTROL BLOCK: (PLEASE PRINT'ALL REQUIRED INFORIIIIAYION) 6 LCENSEE LICENSE EVENT

'AME LCENSE NUtvIBEA TYPE TYPE

@01 A L B R P 3 0 0 0 0 0 0 0 0 0 4 1 1 1 1 ~03

~

7 89 14 15 25 26 30 31 32 REPORT REPORt CATEGORY TYPE SOURCE DOCKET NUMBER EVENT DATE AEPORT DATE QOji CON'T L L 0 5 0 0 .2 9 6 0 8 3 0 '9 l Fi 7 -7 7 8 57 58 59 60 68 69 74 75 80 61'VENT DESCRIPTION 7

7 7

I Jag toO~]

8 9 89 8 9 5 P~<D E', I

'C CD O>TROLL 7-/$ 3 P lodL ( d Conc LE'7ING MOLL I QV g,tan-

"C,~M~ RIOT'.CORI< g,Zt 5 uCI/E>L4<NC ~

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H.PC.I f'u'g)9fPI>

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80 80 80 toOs] f' ~eh'PS C '9 7 8 9 80 QOQ 7 8.9 PAME 80 SYSTEM CAUSE COMPONENT COMPONENT COOE CODE COMPOS.ENT CODE SUPPER MANUFACTURER VIOLATION tooj7 8

LCL0 9 10 LZJ N 43 44 W 2 9 0 N 7 11 12 17 47 48 CAUSE "DESCRIPTION foOI The dropping resistor assembly (Woodward Part No. 8270-282) which supplies power 7 89 80 Qg to the Woodward overnor failed due to an opened resistor.

7 89 80

~10 .

7 89 METHOD OF 80 OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION 7

E<G'zl 8 9 LaLaLzl12 10 13 A

44 45 B

46 N A 80 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 1112 ~a a N/A N/A 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES 7

EG3 89 LaL~ 11 lal 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION 7

~14 89

~00 N/A 11 12 80 OFFSITE CONSEQUENCES Q~g N A 7 89 80 LOSS OR DAMAGE TO FACILITY TYPE OESCAIPtlON

~a N/A 7 89 10 80 PUBLICITY N/A 7 89 80 ADDITIONAL FACTORS

[i(s) N/A 7 89 80 7, 89 NAME: PHONE'0 S>0 IIII Odt

ENT DESCRIPTION During surv'eillance testing, the HPCI turbine. speed controller would not control the turbine. The controller was repaired and returned to service prior to completing all the backup system testing required by section 3.5.E.2 of the limiting conditions of operation in the technical specifications; therefore, only the CSS and RHR (LPCI) tests were completed. This is a repetiti've occurrence. (BFRO-50-296/7715)

MAR:SSN 9/15/77

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