ML18142A876

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LER 1978-006-00 for R. E. Ginna, Main Steam Line Snubbers, Positions MS146 Top and Bottom
ML18142A876
Person / Time
Site: Ginna Constellation icon.png
Issue date: 08/03/1978
From: White L
Rochester Gas & Electric Corp
To: Grier B
NRC/IE, NRC Region 1
References
LER 1978-006-00
Download: ML18142A876 (5)


Text

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ROCHESTER GAS AND ELECTRIC CORPORATION ~ 89 EAST AVENUE, ROCHESTER, H.Y. 14649 I ECIN D. WHITE. JR. TELEPIIDNE VICE PRESIDENT ARE* CDDE 7III 546-2700 August 3, 1978 C

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jr I Mr. Boyce H. Grier, Director I CA U. S. Nuclear Regulatory Commission C Al A7 =

CID Office of Inspection and Enforcement R Region I Dl CA I

631 Park Avenue King of Prussia, Pennsylvania 19406

Subject:

LER 78-006/03L-O, Main steam line snubbers, positions MS146 top and bottom R. E. Ginna Nuclear Power Plant, Unit No. 1 Docket No. 50-244

Dear Mr. Grier:

In accordance with Technical Specifications, Article 6.9.2.b. (2) operation in a degraded mode permitted by a limiting condition for operation, the attached report of Reportable Occurrence 78-006, 30-day, is hereby sub-mitted. Two additional copies of this letter and the attachment are enclosed.

Very truly yours, L. D. White, Jr.

Attachment cc: Director, IE, Washington (30)

Mr. William G. McDonald (3) 782230094'

~ '4 Y t 1

't II

NRC FORM 366 U. S. NUCI.EAR REGULATORY COMMISSION (7-77l P LlCENSEE EVENT REPORT (CAR 1192 & 1196)

. CONTROL BLOCK: (PI.EASE PRINT OR TYPE ALL REQUIRED INFORIVIATION)

I 6

~01 7 8 9 N Y R LICENSEE CODE E G 1 14 Qz 0 0 0 0 0 0 LICENSE NUMBER 0 - 0 0 25 Qz 26 4 1 1 LICENSE TYPE 1 1 30 QE~ 57 CAT 58 QE CON'T KDD8 7

soUROE MLO 60 61 0 5 0 0 0 DOCKET NUMBER 2 4 4 68 7

69 0 7 1 EVENT DATE 3 7 8 74 B 0 75 8 0 3 REPORT DATE 7 8 80 Q

EVENT DESCRIPTION AND PROBABL.E CONSEQUENCES QIO

~o2 During snubber inspection position MS146 (bottom) was found with low accumulator

~o3 level ~ After adding'nd later reche cking level, snubber unit a long withI unit in position MS 146 (top) were replaced for maintenance. When tested both units failed to lock up in compres sion and tension modes ~ (T ~ S ~ 3 ~ 13 ~ 1) ~

~OB

~DB 7 8 9 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENTCODE SUBCODE SUBCODE

~OB ~HB 9 10 QTT E Q2 UBQ>> S U P 0 R T QQ UDQ'9 UZ Q'9 7 8 11 12 13 18 19 20 SEOUENTIAL OCCURRENCE REPORT REVISION LERIRO I EVENT YEAR REPORT NO.

U CODE TYPE NO.

Q17 REPoRT I

L

~~q 21 22 23

~oo 24 9

26 U~

27 M~

28 29 UL 30 LJ 31 Uo 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDQ PRIME COMP, COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER UCOTR U<OER 33 34 UOzo 35 UZO 36 37 0 0 0 0 40 MNOzz 41 UYO24 42 UAO29 43 44 B 2 0 9 47 Qze CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o Constant movement of pipe resulted in check valve failure and wear on accumulator tube, piston, piston shaft and shaft seal on each unit. Top unit had broken spring.

Both units are Bergen-Paterson model HSSA-30. They were replaced with tested 3 spares . Inspection of snubbers will be as dictated in schedule given in Technical 4 Specifications.

7 8 9 80 FACILITY ~3P METHOD OF STATUS 'YQ POWER OTHER STATUS QP DISCOVERY DISCOVERY DESCRIPTION Q32 1 9 E Q29 ~10 0 Q29 NA UBQET Surveillance of enubbere 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Q36

~6 7 8 9 Z Q33 ~ZQ34 10 44 45 NA 80 PERSONNEL EXPOSURES NUIABER TYPE DESCRIPTION

~17 [~00 0 QET UZQEE NA 7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41

~l8 ~00 0 Q49 NA 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY 43 TYPE DESCRIPTION

~IB1 (~zQ42 NA 7 8 9 10 80 PUBLICITY NRC USE ONLY ISSUED DESCRIPTION Q46 L~JQ44 NA 8 9 10 68 69 80 NAME OF PREPARER S. Spector PHQNE.716/546-2700, ext. 291-215

+ ur. (iq/e I DS REGULATORY I NFOR 'TION DISTRIBUTION SYSTEM ( >

DISTRIBUTION FOR INCOMING MATERIAL 0-244 DOCDATE: 06/06/78 REC:

NRC GRIER B H ORG: WHITE L D ROCHESTER GAS 8c ELEC 'ATE RCVD: 06/12/7 DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED

SUBJECT:

LTR 1 ENCL 1 FORWARDING SUPPLEMENTAL LICENSEE EVENT REPT (RO 50-244/77-'007> ON 06/29/77 CONCERNING DURING TEST C SI PUMP FAILED TO START FROM BUS 14 BREAKER ON 2 I

ATTEMPTS.

PLANT NAME: RE GINNA UNIT 1 REVIEWER INITIAL: X JM DISTRIBUTOR INITIAL:

DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS INCIDENT REPORTS

'-'(DISTRIBUTION CODE A002) %I FOR ACTION: BR F ORB02 BC~~W/4 ENCL INTERNAL: 4+W/ENCL NRC PDR+4W/ENCL I 8 E~~W/2 ENCL MIPC++W/3 ENCL I 5 C SYSTEMS BR44W/ENCL EMERGENCY PLAN BR++W/ENCL NOVAK/CHECK++A/ENCL EEB~~W/ENCL AD FOR ENG44W/ENCL PLANT SYSTEMS BR~%W/ENCL HANAUER+4W/ENCL 'AD FOR PLANT SYSTEMS>>W/ENCL AD FOR OPER TECH44W/ENCL REACTOR SAFETY BR<4W/ENCL ENGINEERING BR++M/ENCL VOLLMER/BUNCH+~W/ENCL KREGER/J. COLL I NS4 4 W/ENCL POWER SYS BR4%W/ENCL K SEYFRIT/IE+~W/ENCL EXTERNAL: LPDR S ROCHESTER NY4+W/ENCL T I C+4 W/ENCL NS IC++W/ENCL ACRS CAT B++W/16 ENCL DISTRIBUTION: LTR 45 ENCL 45 CONTROL NBR: 781650068 SIZE-. 1P+iP THE END

NRC 3031305 006 UNITED STATES NUCLEAR REGULATORY COMMI DDC DAILY ACCESSION LIST 05/04/78 FILE LEVELS... DOC. DA'TE ma~w~w~wwm~w~~mmmww~ww~~wwma~~~~~~~~

STN 50 484 NORTHERN STATES POWER.'COMPANY TYRONE Pi...

50 02/22/78 ACCESSION NBR! 77346 0280 NBR:

484 DOCUMENT TYPE: MEMO FICHE NBR !

C DOCUMENT SIZE. 1 p NOTARIZED!

DOCKET DATE: LPDR:

REPORT NBR!

RECP! CARLSON R T RECP AFFI4 ORG! REINMUTH 'G W INSPECTIONS'TASK ORG AFF ILI SUBJECT! "SNUPPS" 50 04/20/78 ACCESSION NBR! 78118 0200 'TASK NBR:

484 DOCUMENT TYPE,; L'ETTER 'FICHE NBR !

'C DACUMFNT SIZE! 2P . NOTARIZED:

DOCKET DATE! 04/21/78 LPDR!

RFPORT NBR!

RECP! SMITH I W RECP AFFIL KORNBLITH L ANDERSON G C ORG'EWIS S H ORG AFF ILI

SUBJECT:

RESPONSE TO THE BOARD'S MEMO 8, ORD BY 04/21'/78 THEIR VIEWS ON "WHETHE, CONSIDERATIONS Li IF SOr WHAT SCHE CONSIDERING THE REMANDED MATTERS."

50 04/21/78 ACCESS IQN NRR! 78121 0006 TASK NBR:

484 DQCUMFNT TYPE! OTHERS FICHE NBR C DOCUMghlT SIZE: bP+2P NOTARIZED:

DOCKET DATE: 04/24/78 L'PDR!

RFPORT NBR:

RECP! RECP AFF IL ORG! CHARNOFF ORG AFF ILI BAXTER T SUBJECT! PERMITTEES'EGATIVE RESPONSE TO A WHETHER MA'TTERS 'REMANDED TO ASLB C APPL'ICAhlT S MN "CORP ~ TO WI SUBSID I'F SVC.