ML18110A883

LER 1977-335-29 for St. Lucie, Unit 1 Safety Injection Line Weld

ML18110A883
Person / Time
Site:	Saint Lucie
Issue date:	05/24/1977
From:	Schmidt A Florida Power & Light Co
To:	Moseley N NRC/IE, NRC/RGN-II
References
LER 1977-335-29
Download: ML18110A883 (7)

Text

" ' U,O, NUCLEAR REGULATORY COMMISSION DOCKET NUMBER NRQ FORM )95

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+(%RC DISTRII3UTION FoR Norman go Moseley'ROM:

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50 DOCKET MATERIAL '.

Florida. Power 5 Light Miami, .Fla,.

Company FILE NUMRER INCIDENT REPORT DATE OF DOCUMENT

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DATE RECEIVED 5/24/77 6/13/77 Ao Do Schmidt" QLETTE R ONOTORIZED PROP INPUT FORM NUMBER OF COPIES RECEIVED ABORIGINAL JiBCOP Y DL'SCRIPTION ZfuXCLASSIFIED d

ENCLOSURE l cc;'.

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Iicensee'Font'Report"(RO 50-'335/77-29) on 5/10/7V:.'.i"dnchrning, a srqall cr'ack in the..'..( .

socket"Afield"'aiea'of 1",drain line 'SX-228o dDAZOigjj0iii r

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Sta Lucie Unit.No. 1.: ..'.(i.-P) (2-P)

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R JL,. 6/14/77 NOTE:. IF PERSONNEL EXPOSURE IS INVOLVED rgOKZOSL'EDGKD ~

. SEIG) DIRECTLY TO KREGER/J, COLLINS FOR ACTION/INFORMATION BRANCH CHXEF:

M 3 CYS FOR ACTION LXC ~ ASSTo I:I CXS ACRS CYS EN%dRHI SENT C'WP INTfRNAL 0 IST Rl BUTION I&E (2 MIPC SCEIROEDER/XPPOLITO HOUSTON NOVAK/CHECK GRIMES BU'CLER HANAUER TEDESCO/MACCARY EXSENEIUT BAER SHAO VOLLMER/BUNCH I<REGER/J COLLINS fXTfANAL DISTRIBUTION CONTROL NUMBfR LPDR: +~

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,,771650134, .,

NRC FORM IIIIIl2.1nl

P. O. BOX 013100, MIAMI, FL 33101 FLORIDA POWER 8( LIGHT COMPANY May 24, 1977 PRN-LI-77-161 Kmztw.DOI,f(v I:i<<mly 8 Sg Mr. Norman C. Moseley, Director, Region II >kbcS Office of Inspection and Enforcement ANXg@yy ~

U. S. Nuclear Regulatory Commission lb'uaag II 230 Peachtree Street, N. W., Suite 1217 Atlanta, Georgia 30303

Dear Mr. Moseley:

REPORTABLE OCCURRENCE 335-77-29 ST. LUCIE UNIT 1 DATE OF OCCURRENCE: MAY 10, 1977 SAFETY INJECTION LINE WELD The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9 to provide prompt.

notification of the subject occurrence.

Very truly yours, D. Schmidt.

Vice President Power Resources MAS/cpc Attachment ld I

cc: Robert Lowenstein, Esquire Director, Office of Inspection and Enforcement (40)

Director, Office of Management Information and Program Control (3) 77165pfsq PEOPLE .. ~ SERVING PEOPLE

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LICENSEE EVENT REPORT CONTROL BLOCK: fPL 88 PRINT ALL REQUIRED INFORMATIOM7 f~ 6 UCENSEE UCENSE EVENT NAME LICENSE NUMBER TYPE TYPE

[ODg F L S L S 1 0 0 0 0 0 0 0 0 0 4 1 1 1 1 L0OO1~I

,7 89

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14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE OOCKET NUMBER EVENT OATE REPORT DATE

[oa~jcom ~T L 0 5 0 0 3 3 5 0 5 1 0 7 7 0 5 2 3 7 7 8 57 58 59 60 61 68 69 74 75 80

~02 7 8 9 EVENT OESCRIPTION Dur in normal lant o eration make t Safe In'o 80

~03 was re uired to maintain water level. Visual ins ection of the s stem 7 89 80

[004] revealed a small crack in th ock t w d a II 7 8 9 80 Qg The reactor was shut down in com lianc with 7 8 9 h i 80 7

joan]

8 9 "3.4.6.2. Radio ra hs of the drain line lus thr PRME t 80 SYSTEM CAUSE COMPONENT COMPONENT CQOE COOE COMPONENT COOE SUPPUER MANUFACTURER IOO2I 7 8 9

~SF 10 E P I P E X X 17 44 E 0 6 5 N 11 12 47 48 CAUSE OESCRIPTION Qg 7 8 9 The cause of leaka e in the SI head r drain l'ne w 80 Q~

7 I8 9 weld made durin construction. Weld failure was due to lack of fusion.

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~a 7 89 80 FACIUTY METHOO OF STATUS POWER OTHER STATUS OISCOVERY OISCOVERY OESCRIPTIQN

@~7" E ~09 2 NA A NA 7 8 9 10 12 13 44 45 46 80 FORM OF ACTIVITY CONTENT RELEASEO OF RELEASE AMOUNT OF ACTNITY LOCATION QF RELEASE r11j Lzl r NA. NA 7 8 9 10 11 44 45 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION Pg ~oo 7 8 9 0

11

~z 12 13 PERSONNEL INJURIES NUMBFR OESCRIPTIQN 7 8 9

~oo 0 NA 11 12 80 PROBABLE CONSEQUENCES EQ5 I NA 7 8 9 80 LOSS OR OAMAGE TO FACIUTY TYPE OESCRIPTION

~16 Z NA 7 89 10 80 PUBLICITY 7 8 9 ~ 80 AOOITIONAL FACTORS Q1 7

I8 9 See a e two for continuation of Event. Descri tion.

80 7 89 80 M. A. Scho man PHONE 305 552-3802 CPO OSI ~ SOT

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V REPORTABLE OCCURRENCE 335-77-29 LICENSEE EVENT REPORT PAGE TWO 49,"'

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EVENT DESCRIPTION (Continued) service in the other SI lines were taken. The 1A2 SI header was drained and the cracked joint cut out. A new section of drain line was re-welded in place. The new weld was inspected and hydro-statically tested as required by Technical Specification 4.4.10.lb.

The radiography and liquid penetrant inspections of eight joints in the four SI header drain lines did not show any crack defects other than the leaking weld. The leak was a single occurrence that developed from a defective interior weld pass made during construction and is not considered generic to this system.

(335-77-29)

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