ML18227A426

Referring Licensee Event Report Submitted on 8/25/1976 with Occurrence Date of 7/26/1976. in the Report, Reportable Occurrence Report No 250-72-2 Should Be Changed to 250-76-2. Attached Corrected Report

ML18227A426
Person / Time
Site:	Turkey Point
Issue date:	10/06/1976
From:	Schmidt A Florida Power & Light Co
To:	Moseley N Office of Nuclear Reactor Regulation
References
PRN-LI-76-250
Download: ML18227A426 (14)

Text

N)+C FORM 195 U.S. NUCLEAR REGULATORY MISSION DOCKFT NUMBER I2.7SI wO-FILE NUMBER NRC DISTRIBUTION FoR PART 50 DOCKET MATERIAL INCIDENT REPORT Mr Moseley Florida Pwr & Light Co DATE OF DOCUMENT Miami, Fla 0--

A D Schmidt DATE RECEIVED 10 18 76 HLETTE R ONOTORIZED PROP INPUT FORM NUMBER OF COPIES RECEIVED OORIGINAL XUNCLASSIFIF D 2fcor v DESCRIPTION ENCLOSURE CORRECTION TO:

Ltr trans the following: a Licensee Evnet Report (R($ 76-6) on 7-26-76 MIXCH zecgear6edntripping of g4 generator lockout action......

Turkey Point 8'4 NOTE; IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J..COLLINS FOR ACTION/INFORMATION r)m~7,H Cn~~:

W CYS FOR ACTION LIC.. ASST.:

W CYS ACRS CYS INTERNAL D IST RI BUTION REG FIXE NR~DR IREE 2 MIPC i SCHROEDER IPPOLITO HOUSK)N NOVAK CIIECK GRIMES CASE TEDESCO MACCARY EISENHUT BAER SHAO VOLLMER 8JNCH KI EGER J.COLLINS EXTERNAL DISTRIBUTION CONTROL NUMBER QXQ~

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FLORIO'O'4V R & LIGH" COMPANY October 6, 1976 PRN-LI-76-250 Nr. Norman C. lioseley, Director, Region II Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 230 Peachtree Street, N. N., Suite 818 eKEVEs Atlanta, Georgia 30303 Sq OCT1B I97BL I;., 'E <<REGVihroRy p

Dear Nr. Hoseley:

C ghII~ ION JP hIeN ~I REPORTABLE OCCURRENCE 251-76-6 TURKEY POINT UNI' DATE OF OCCURRENCE: JULY 26, 1976 CORRECT ION A Licensee Event Report for the subject occurrence was sent to you on August 25, 1976. The last sentence of the Cause Description stated that a followup investigation was being conducted as ment'oned in previous Reportable Occurrence Report 250-72-2. Tne referenced report numbe is incorrect and should be changed to 250-76-2. A corrected Licensee Event Report is attached.

Very truly yours, OOCKETE0 VSNRQ Vice President OCT 181 Power Resources. %1 9 V.S. E~i i~hR r '<

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cc: Jack R. Newman, Esquire Director, Office of Inspection and Enforcement (40)

Director, Office of llanagement In ormation and Program Control (3)

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f=. Lqenerator lockout action. The startu transformer breaker (4B 4l60 7 8 0 8 Jog LVolt Bus >>o. 4N26456) failed to close durinq the autoTI!atic transfer 7 8 9 6(

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Reportable Occurrence 251-76-6 Licensee Event Report Papa Two Event Description (continued) making full contact which prevented the breaker from closing.

Previous occurrences involving this.,type breaker have been described in Reports 3-72-3, 3-72-'4, 250-74-2, 250-75-4, 250-75-5, 250-75-6, 251-75-8 and 250-76-2. (25l-76-6).

Cause Description (continued) being conducted by the Off-Site Support Staff as mentioned in Report 250-76-2 will include the operation of tn=s switch.

FLORIDA POWER 5 LIGHT COMPANY October 6, 1976 PRN-LI-76-250 Mr. Norman C. Moseley, Director, Region II Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 230 Peachtree Street, N. N., Suite 818 ggfy~

Atlanta, Georgia . 30303 '+1

Dear Mr. Moseley:

REPORTABLE OCCURRENCE 251-76-6 ~/ v, TURKEY POINT UNIT 4 DATE OF OCCURRENCE: JULY 26, 1976 CORRECTION A Licensee Event Report for the subject occurrence was sent to you on August 25, 1976. The last sentence of the Cause Description stated that a followup investigation was being conducted as mentioned in previous Reportable Occurrence Report 250-72-2. The referenced report number is incorrect and should be changed to 250-76-2. A corrected Licensee Event Report is attached.

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

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

HELPING BUILD FLORIDA

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EV=i'4T OESCPIPTION t002 Durin normal stead state o eration, the No. 4 Generator was tripped by a9 qenexator lockout acti. on. The startuo transformer breaker (48 4l60 7 89 80 Q0J Volt Bus No. 4N26456) failed to close durinq the automatic transfer J80 7 8 9 Kl05 se uence from the auxi3.iar transformer. This left the 4B 4160 Volt Bus Xns ecti.on of the breaker showed that the tnlj6 7 8 9 deener ized CQOE'Ciirri4- Pn VE CCiAW"'-'IT FFFF svFitch was not 80 J

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ncooe~ioitect: w2uwIi pmmveote~ 7 O> mi CXO=~~o ~hC >~>>~kL=r w.i=~ J 80 PQo lowered then raised to establish contact. The fol3.owup investigation 89 FAClLITY htETHCQ CF 60 Ii STATUS '.Y PCiVeFI OTHeR STATUS OISCCVERY OESCFilPTiCil 7 8 Icj 9 10

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Reportable Occurrence 251-76-6 Licensee Event Report

. Page Two Event Description (continued) making full contact which prevented the breaker from closing.

Previous occurrences involving this, type breaker have been described in Reports 3-72-3, 3-72-4, 250-74-2, 250-75-4, 250-75-5, 250-75-6, 251-75-8 and 250-76'-2. (251-76-6)

Cause Description (continued) being conducted by the Off-Site Support Staff as mentioned in Report 250-76-2 Iwill include the operation of th-s switch.

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