ML18227A426
| 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 I2.7SI DOCKFT NUMBER wO-FILE NUMBER INCIDENT REPORT Florida Pwr & Light Co Miami, Fla A D Schmidt Mr Moseley DATE OF DOCUMENT0--
DATE RECEIVED 10 18 76 ONOTORIZED XUNCLASSIFIF D HLETTER OORIGINAL 2fcor v PROP INPUT FORM NUMBER OF COPIES RECEIVED DESCRIPTION ENCLOSURE CORRECTION TO:
a Licensee Evnet Report (R($76-6) on 7-26-76 MIXCH zecgear6edntripping of g4 generator lockout action......
Ltr trans the following:
NOTE; IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J..COLLINS Turkey Point 8'4 FOR ACTION/INFORMATION r)m~7,H Cn~~:
W CYS FOR ACTION LIC..ASST.:
W CYS ACRS CYS ISTRI BUTION INTERNAL D 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 CONTROL NUMBER EXTERNALDISTRIBUTION QXQ~
U.S. NUCLEAR REGULATORY MISSION NRC DISTRIBUTION FoR PART 50 DOCKET MATERIAL
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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 Atlanta, Georgia 30303
Dear Nr. Hoseley:
REPORTABLE OCCURRENCE 251-76-6 TURKEY POINT UNI' DATE OF OCCURRENCE:
JULY 26, 1976 eKEVEs
OCT1B I97BL p Sq I;., 'E
<<REGVihroRy JP C ghII~ION hIeN ~I 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, Vice President Power Resources.
OOCKETE0 VSNRQ OCT 181
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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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Lqenerator lockout action.
The startu transformer breaker (4B 4l60 7
8 0 Jog LVolt Bus >>o.
4N26456) failed to close durinq the autoTI!atic transfer 8
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100j se uence from the'uxi3.iar transforme".
Tnis left the 4B 4160 Volt Bus
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showed that "he HEI switch !has not makinc(
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.. Descriotion ancl Cause Dc.sc!. i.r>tion.
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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 Atlanta, Georgia
. 30303
Dear Mr. Moseley:
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'+1 REPORTABLE OCCURRENCE 251-76-6
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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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L!CENSEE EVENT con"soL BLoe'(:~gjJ REPORT As'= ~rnl."iT ALLREGUIP.=-a)
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25 26 UCeNSc TYPLe EVcNi TYPc l
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8 57 58 59 REPORT SQURCc 80 60 S1 OQC<cT I'Ui'= R EPQRT CATE I oL6 I oJ LoO716 I i J ol7 216 17
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EV=i'4T OESCPIPTION t002 Durin normal stead state o eration, the No.
4 Generator was tripped by a9I qenexator lockout acti.on.
The startuo transformer breaker (48 4l60 7
89 Q0J Volt 80 Bus No.
4N26456) failed to close durinq the automatic transfer J
Kl tnlj6 deener ized Xns ecti.on of the breaker showed that the FFFF svFitch was not J
80 7
8 9 SY ST E>.'I COOE Pn VE CCiAW"'-'IT CAUScCQOE'Ciirri4-iT h'~'<l.'FA~C+r-l ViCLATiCN CONIPQN i IT CQQE
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7 89 10 iT7 7
8 9 80 05 se uence from the auxi3.iar transformer.
This left the 4B 4160 Volt Bus CAUSE OESCRIPT!Oi'4 zz Lx='.~-'
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9 PQo lowered then raised to establish 7 O>
contact.
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80 mi CXO=~~o ~hC >~>>~kL=r w.i=~J 80 The fol3.owup investigation htETHCQ CF c5 N/A 89 Ii FAClLITY STATUS
'.Y PCiVeFI OTHeR STATUS Icj
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10 12 13 44 45 FOR!i OI-AC.irfii'O%TENT RELEASEQ QF i"ELEASE ASIQUNT QF ACiiVITY Lil
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~ ION Iiirl LOOO OOI I
)89 11 12 PPOT)ei+T E CONSEGUE!VICES 60 OISCCVERY OESCFilPTiCil LCCA ION OF AELe'SE N/A 60 80
- 7. 89=
LOSS OR OhlAAGE TO FACILITY TYPE OEeCn.'PTIQN
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'7 8 9 10 PUBLICITY KQ7 I
7 89 AOOITIOiXAL FACTOPS go t~r c~ot.i~nIation of 7
89 80 Fvent Descri ti.on ancl Cause Doscr~i~tion.
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Abraham PHONE 305/552-3779 r ~ ~
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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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