ML18227A507

Transmittal of Licensee Event Report 251-77-4, Steam Generator Tube Plugs

ML18227A507
Person / Time
Site:	Turkey Point
Issue date:	07/29/1977
From:	Schmidt A Florida Power & Light Co
To:	Moseley N NRC/RGN-II
References
PRN-LI-77-247 LER 251-077-04
Download: ML18227A507 (8)

Text

NRC FORM 195 I2-76)

U.S. NUCLEAR REGUI.ATOR MISSION ao-DOC~T NUMBER FILE NUMBER NRC'DISTRIBUTION FQR PART 50 DOCKET MATERIAL TO FROM: DATE OF DOCUMENT Florida Pwr ~ & Light Company 7/29/77 Mr. Norman C~.Moselay Miami, Flora:da DATE RECEIVED A D~ Schmidt 8/19/77 ONOTORIZED PROP INPUT FORM NUMBER OF COPIESRECEIVED

/LETTER ORIGINAL UNCLASSIFIED COPY e DESCRIPTION ENCLOSU RE Licensee Event Report (RO 50-251-77-4) on 5/19/77 concerning a tube plug in Row 1 Column 23 being apparently missing during eddy current examinations of the, steam generator "4B" coldlleg. ~ ~ ~ ~

PLANT NAME:

Turkey Point Unit RJL 8/19/77 No~ 4 (1-P) "" OomTee@

NOTE: IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J. COLLINS n)c.L cc FOR ACTION/INFORMATION INTERNAL DISTR I BUTION EXTERNAL DISTRIBUTION CONTROL NUMBER AT B 77'/dd fb ACRS 16 SENT AS

C l a

+v 1

t P. O. BOX 013100, MIAMI, FL 33101 h

I t FLORIDA, POWER & LIGHT COMPANY 8K[ 5) July 29, 1977 AUG19 j977'~ 'I RS~

t U,S tIUCtfAR COkhhhI SSI0ig PRN-LI-77-247 Q IAall SedISIS t~~tP .

+egu~latottSS Mr. Norman C. Moseley, Director, Region II Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 230 Peachtree Street, N. W., Suite 1217 Atlanta, Georgia 30303

Dear Mr. Moseley:

REPORTABLE OCCURRENCE 251-77-4 TURKEY POINT UNIT 4 DATE OF OCCURRENCE: JUNE 29, 1977 STEAM GENERATOR TUBE PLUGS The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9.2 to provide 30-day notification of the subject occurrence.

Very truly yours, JP A. D. Schmidt Vice President, Power Resources MAS/cpc Attachment cc: Robert Lowenstein, Esc(uire Director, Office of Inspection and Enforcement, (30)

Director, Office of Management Information and Program Control (3) 77& pi~ Dp'~

PEOPLE... SERVING PEOPLE

I P

LICENSEE EVENT REPOR~

~egu ato+ File Cgg CONTROL BLOCK: (PLEASE PRINT ALL REOUIREO INFORMATION)

~ ~

LICENSEE UCENSE EVENT NAME LICENSE NUMSER TYPE TYPE

[oa~] z. p sl e 0 0 0 0 0 0 0 0 0 0 1 1 1 1 L0CC3~I 31'2 F'7

~

89 14 15 25 26 30 REPORT. REPORT CATEGORY TYPE SOURCE OQCIIET NUMSER EVEN% OATE, REPORT OATS

[CD1]CCN'T LIJ L 0 5 0 0 2 5 1 0 5 1 9 7 7 0 7 2 9 7 7 7 8 57 58 59 60 61 68 69 74 75 80 EVENT OESCRIPTION 7

~0 2 8 9 Durin edd current examinations of the steam enerator "4B" cold leg, it was noted that 80

~0 3 a tube lu in Row 1 Column 23 was a arentl missin . Preliminar investi ation indica-7 89 80

[OD4] ted that the lu ma have mi rated u the tube to the U-bend re ion. A search of the 7 8 9 80 U-bend re ion the channel'head and intermediate loop ipin gave no evidence of the 7 8 9 VOLATION 80 Jog r osed for the refuelin fuel shuffle and then 7 8 9 PRME 80 SYSTEM CAUSE IF COMPONENT CQ MPQN 84T COOS COO E COMPONENT COOE SUPPUER MANUFAClUPER LccC~c H 2 E x c H W 1 2 0 7 8 9 10 11 12 17 47 48 CAUSE OESCRIPTION t008 The cause of this occurrence is not known. A metal im act monitorin s stem has been 7 8 9 ~

80 t00I installed on the reactor vessel and will be used to monitor for lo'ose ob'ects. A more 7 8 9 80 Q~ 0 detailed re ort of this occurrence was forwarded to the NRC (DOR) on July 27, 1977.

7 89 FACILITY METHOO OF 80 STATUS . 5 POWER OTHER STATUS OISCOVERY OISCQVERY OESCRIPTIQN 7 8

~0 9

FORM OF ACTIVITY

'0 ~OO CQATENT 0

12 13 NA 44 45 46 Steam Generator Inspection 80 RELEAS'EO OF RELEASE AMOUNT QF ACTIVITY LOCATION OF RELEASE 2

5 LFJ [ZJ NA NA 7 0 9 10 11 44 45 PERSONNEL EXPOSURES 7

UQ3 8 9

~La( le 11 12 13 NA PERS'ONNEL INJURIES 7

EH 8 9 LOJ NUMSER I~ 11 12 OESCRIPTION 80 PROBABTE CONSEQUENCES Q~g NA 7 8 9 LOSS OR OAMAGE TO FACIUTY TYPE OESCRIPTIQN

~z NA 7 89 10 80 PUBLICITY NA 7 89 AOOITIONAL FACTORS CO1 8 See Pa e Two for continuation of Event Description.

7 89 80 7 89 80 NAME: N- A. Scho man PHONE:305 552-3802 0$ 0 dd5 ddT

1 ~

REPORTABLE OCCURRENCE 251-77-4 LICENSEE EVENT REPORT PAGE TWO Event Descri tion (continued) reopened after the fuel shuffle to complete eddy current testing. During this testing, it was noted that an additional 10 plugs were apparently missing (Row 1 Columns 1-9, Row 1 Column 31). A search of the reactor vessel and intermediate loop piping by remote visual means and of portions of the pressurizer spray line by radiographic methods gave no evidence of the missing plugs.

This occurrence was identified as being reportable on June 29, 1977.'251-77-4)

RECEIYEO DOCUMEHT PROCESSING UIIIT 19(f AUG l9 PM I2 09