05000296/LER-2077-015, For Browns Ferry Nuclear Plant, Unit 3, HPCI Turbine Speed Controller Would Not Control Turbine During Surveillance Testing

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)

LER-2077-015, For Browns Ferry Nuclear Plant, Unit 3, HPCI Turbine Speed Controller Would Not Control Turbine During Surveillance Testing

Event date:
Report date:
2962077015R00 - NRC Website

text

0 REGULATORY INFORMATION DISTRIBUTION SYSTEM

< RIDS)

DISTRIBUTION FOR INCOMING MATERIAL 50-296 REC:

OREILLY J P

NRC ORG:

FOX H S TN VALLEY AUTH DOCDATE: 09/19/77 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:

EXTERNAL:

CL I 0 E~~~W/2 ENCL LPDR'S ATHENS'L<<W/ENCL TIC<<W/ENCL ACRS CAT B<<W/0 ENCL NRC PDR<<W/ENCL DISTRIBUTION:

LTR 6

'SIZE:

1P+1P+3P ENCL 6 CONTROL NBR:

780530225 THE END

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TENNESSEE VALLEYAUTHORiTY 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 illy:

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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 'VALLEYAUTHORITY

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S ~ Fox Dixector of Power Production K[gg')IlOgtr~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 An Equal Opportunity Employer P

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Ol 14 '5 REPORT REPORT CATEGORY TYPE SOURCE

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EVENT OESCRIPTION

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LICENSE NUMBER 0 0 0

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to the Woodward overnor failed due to an opened resistor.

7 89

~E SYSTEM

CAUSE

COMPONENT COMPONENT COOE COOE COMPONENT COOE SUPPUER MANUFACTURER VOLATION KI LCLLl M

~N W

2 9

0 7

8 9 10 11 12 17 43 44 47 48 CAUSE OESCRIPTION

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

89 [iso]

7 8.9'3

'tzJ

~aLzl 7

8 9

10 12 13 fORM OF ACTMTY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY Qg

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8 9

10 11 PERSONNEL EXPOSURES CG3 LQLZLQJ lKJ 7

89 11 12 13

'PERSONNEL INJURIES NUMBER OESCRIPTION [i+~ ~oo N/A 7

89 11 12 OFFSITE CONSEQUENCES Qs]

N A 7

89 "LOSS OR OAMAGE TO FACILITY.

TYPE OESCRIPTION Q1] ~8 '/A METHOO OF OISCOVERY B

44 45 46 44 45

~ OICOVERY'ESCRIPTION N A LOCATION OF RELEASE N/A 80 80 80 80 80 80 80

~ 7 89 10

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PUBLICITY Q~~]

7 89 AOOITIONAL FACTORS Qe]

7 89 N/A

'/A 80 80 80 7

89 NAME:

PHONE:

80 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

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CONTROL BLOCK:

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DOCKET NUMBER 0

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DESCRIPTION

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CAUSE

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0 N

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89 E<G'zl LaLaLzl 7

8 9

10 12 13 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY 1112

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89 11 12 13 PERSONNEL INJURIES NUMBER

DESCRIPTION

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89 11 12 OFFSITE CONSEQUENCES Q~g N A 7

89 LOSS OR DAMAGE TO FACILITY TYPE OESCAIPtlON

~a N/A 7

89 10 PUBLICITY N/A 7

89 METHOD OF OTHER STATUS DISCOVERY A

B 44 45 46 44 45 7

89 Qg to the Woodward overnor failed due to an opened resistor.

DISCOVERY DESCRIPTION N A LOCATION OF RELEASE N/A 80 80 80 80 80 80 80 80 80 80 ADDITIONAL FACTORS [i(s) 7 89 N/A 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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