ML18227A434

Letter Transmitting Licensee Event Report, Steam Generator Tube Support Plate, Occurred in Unit 4 on 5/17/1976 in Accordance with Technical Specification 6.9.2 to Provide Prompt Notification

ML18227A434
Person / Time
Site:	Turkey Point
Issue date:	05/27/1976
From:	Schmidt A Florida Power & Light Co
To:	Moseley N NRC/RGN-II
References
PRN-LI-76-128
Download: ML18227A434 (7)

Text

U.S. NUCLEAR REGULATORY EMISSION DOC - NUMIIER NRC FORM 195 I&lO)

FILE NUMOER NRc DISTRIBuTION FoR PART 60 OOCI(ET MATERIAL XNCXDENT REPORT FROM: FLORIDA POWER  % LIGHT CO DATE OF DOCUMENT

'MR-N C MOSEY'Y MIMAM MIAMI'IA S~Q 1

'A D SCHMIDT DATE RECEIVED 4- 3"'l0 LETTER CINO RIZED PROP INPUT FORM NUMBER OF COPIES RECEIVED Cl I G IN AL NCLASSIFIED COPY DESCRIPTION ENCLOSURE LTR TRNS THE FOLLOWING......... 0/2)l/76-3 on 5 f6 RE REPUI@XNG OUT AGE A SECTION OF THE SIXTH THE SUPPORT PLATE WAS RRBVED FROM STEAM GENERATOR.. ~ ..BASED-ON PRELIMINARY RESULTS'OME CRACKING OF THE TUBE HAS BEEN IDENTIFIED.... ~ ~ .. ~ ~ ~ .

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~~/pe l.g+~ Jg FLdRIOA POWER EL LIGHT COMPANY May 27, 1976 o f14 gpss QgOqr - F gX'~ M.. ~ / PRN-LI-76-128'Dear I

Mr. Norman C. Moseley, Director, Region II Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 230 Peachtree Street, N. W., Suite 818 Atlanta, Georgia 30303 Mr. Moseley:

REPORTABLE OCCURRENCE 251-76-3 O TURKEY POINT UNIT 4 DATE OF OCCURRENCE: MAY 17, 1976 STEAM GENERATOR TUBE SUPPORT PLATE The attached Licensee Event Report is being submitted'n accordance with Technical Specification 6.9.2 to provide prompt notification of the subject occurrence..

Very truly yours, Vice President Power Resources MAS/cpc Attachment cc: Jack R. Newman, Esquire Director, Office of Inspection and Enforcement (40)

Director, Office of Management Information and Pxogram Control (3)

LICENSEE EVENT REPORT 4 ,~ ~ , COhlTROL BLOCK: SE PRINT ALL REQUIRED INFQRIVIATION) 1 6.

UCENSEE UCENSE EVENT Jag F L T NAME S 4 0 0 00000 UCENSE NUMBER 00411'11~01 TYPE TYPE

~'8 7 89 14 15 25 26 30 31 32 REPORT REPOAT CATEGORY TYPE SOURCE ~

COCKET NUMSEA ~ EVENT OATE REPORT OATE

[001lcoN'T LLj- ~0 0 5 0 0 2 .5 1 '0 5 1 7 7 6 0 5 7 8 57 59 60 61 68 69 74 75 80 EVENT OESCRIPTION t00g 7 8 9 Dur'n the current refuelin outa e a section of'he sixth tube su ort 80 7

Jag 89 b t manufacturer. The sectio 60

[OO4] man facturer's Research and Develo ment Laborator for 7 8 9 80 7 8 9 80 7

QOQ 89 ection as been identified. Several observations were PAME ao SYSTEM CAUSE

"~NW12 COMPONENT COMPONENT 7 8 9 10 COOS

~CCFHTEXCH COOS 11 12 COMPONENT COOE 17 SUPPLER 43 44'7 MANUFACTURER 0

VOILA~

48 I

CAUSE OESCRIPTION

.,Qo g8 Laborator examination results and evaluations have not determined the 7 9 80 u of his occurrence. The manufacturer has undertaken a dia nostic 7 89 80 t110 ro ram to develo an understanding of the observed conditions.

7 89 80 FACXlTY METHOO OF STATUS  % POWEA OTHEA STATUS OISCOVEAY OISCOVERY OESCRIPTION 7

Qig 8 9

~H ~oo o N A 44

~c 45 Vendor Inspection 10 12 13 . 46 80 FORM OF

'0 ACTIVITY COFITENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE LzJ ~z N A N/A 7 8 9 11 ao PERSONNEL EXPOSURES NUMBER TYPE 0ESCRIPTION 7

EG3 89 Lglg~o11 LZJ 12 N A 13 80 PERSONNEL INJURIES 7

~4000 8 9 11 OESCAIPTION 12 N/A 80 PROBABLE CONSEQUENCES Qs] N/A' 7 89 80 LOSS OR OAMAGE TO FACIUTY TYPE OESCRIPTCN '0 A

PUBLICITY' N/A 89 ~ 80 AOOmONAL FACTORS

+ca Eee pa e Two for Continuation of Event Description.

7 89 80 7 89 80 NAME: M. A. Schoppman ONE.305/552-3779 CFO ddT ~ ddt

~ ~ ~

REPORTABLE OCCURRENCE 251-76-3 LICENSEE EVENT REPORT PAGE TWO Event Descri tion (Continued) made of cracking of the ligament between a tube hole and an interstitial flow hole. The manufacturer's diagnostic program is continuing. 'This is the first reportable occurrence report to degradation of a steam generator tube support plate. 'elated (251-76-3).

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