ML18110A885

LER 1977-335-20 for St. Lucie, Unit 1 Ginca Code

ML18110A885
Person / Time
Site:	Saint Lucie
Issue date:	05/15/1977
From:	Schmidt A Florida Power & Light Co
To:	Moseley N NRC/IE, NRC/RGN-II
References
LER 1977-335-20
Download: ML18110A885 (8)

Text

NRC FORM 195 U.ar NUCLEAR BFGULATORV COMMISSION

{2 T'AI)'%r iw~r.NRC DISTRIBUTION FoB PART 50 DOCKET MATERIAL'OCKET NUMOE B~SO-333 FILE NUMOE B XNCIDENT REPORT;gfLETTER SQRIG INAL OCOPV ONOTORIZEO ASUNCLASSIFIED

'TO r~~4.Mr.Norman.Co Moseley PROP INPUT.FORM

~~FROM: Florida Power 5;Light'Company Miami,.Fla,.A,'D+Sch'midt.DATE OF DOCUMENT.5/15/77 DATE RECEIVED 6/13/77'UMOER OF COPIES BFCEIVED DESCRIPTION j r'pp gpT-gLMOVS ENCLOSURE~'Licensee Event'.Report (RO 50-335/77-20) on 4/l5/77.rconcerning the'ncare.

alarm setpointsl being 9/.nonconservative'

~~~,.'-."..~rV 4 r,N r XCKNOW LEDGE@PLANT NAME: ','-S~Lucie Unit No..1;.RJL,: 6/14/77~I r C2 P).NOTE:, IF PERSONNEL EXPOSURE IS INVOLVED~, SEND DIRECTLY TO KREGER/J, COLLINS'RANCH CHEEP: '8 3 CYS FOR ACTION LXC~ASSTo H CYS FOR ACTION/INFORMATION ACRS G FXLE CYS NT INTERNAL D IST Rl BUTION IAE (2 SCH ROE DER/XPPOLXTO HOUSTON NOVAK/CHECK GRIMES BUTLER HANAUER.TEDESCO/MACCARY EISENHUT BAER~SHAO VOLLNER/BUNCH KREGER/J COLLXNS LPDR: TIC: EXTERNAL DISTRIBUTION, CONTROL NUMBER 771650133 NBC I'OBM IOII IO 7nl 4 I I t I', t A~~~~~I P.O.BOX 013100, MIAMI, FL 33101 FLORIDA POWER&LIGHT COMPANY%MIN%)5%KG Hlg+May 15 197 PRN-LI-77 146 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:

8 BEcawEO JUN 18 gyp Qig~RKWLlCg$$llMISSIN4 55l5zt REPORTABLE OCCURRENCE 335-77-20 ST-LUCIE UNIT 1 DATE OF OCCURRENCE:

APRIL 15, 1977 GINCA CODE The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9 to provide 30-day notification of the subject occurrence.

Very truly yours, A.D.Schmidt Vice President Power Resources MAS/cpc Attachment cc: Robert Lowenstein, Esquire Director, Office of Inspection and Enforcement (30)Director, Office of Management Information and Program Control (3)I7716501$3PEOPLE...SERVING PEOPLE C 1~~I II dLI>y, 0 ir l,,4%Pl',jF)II j' CONTROL BLOCK: ILICENBEE EVENT REPORT UCENSE 0 o-0 ol 14 15 ,7 89 UCENSEc NAME m~~~~~~LCENSE TYPE 4 1 1 1 1 30 25 26 NUMBcR 0 0 0 0 0 EVENT TYPE 31 32 REPORT REPORT CATEGORY TYPE SOURCE Ioo~j corn'7 8 57'8 59 60 61 DOCKET NUMBER 1 o 68 69~EVENT OATE 4 1 5 7 7 74 75 REPORT OATS 0-5 1'7 7 EVENT OESCRIPTION t002J S ecification 4.2.1.4 re uires that a rod bow enalt factor of 1.05 be included in the aa 80 t003 set oints of the incore detector monitorin s stem Local Power Densit alarms.Calcula-7 8 9 ao Iool data from the incore flux detectors.

This code'is su ied and maintain b SSS 7 8 9~0 6 vendor.On December 12 1976.the vendor removed the rod bow enalt factor from he 7 8 9 SYSTEM CAUSE COOS, COOC IoOTI~zz~z 7 8 9 10 11 12 CAUSE OESCRIPTION

~0!-" The RC a roved COMPONENT MANUFACIU~

CQMPCNENT COOE z z z z z N CI4 9 lo 17'3 44 47 N the de1etion of the rod ow a 80 the same vendor;The vendor removed the fa or f om l 7 S 9 t009 tions of another unit su lied b 7 8 9 eo tOD4]'o f z s t ints is ase o o t t ro..IN m'u er 0 v 7 8 9 Q~0 Lthe GINCA code a arentl assumin eo that the deletion a olied to all lants h wever the l 7 6 9 FAClLPiY STATUS POWER z~lo 0 7 8 9 10 12 13 FCRII QF ACTIVITY CONTENT RELBLSEO OF RELEASE AMCUNT HI LJ LzJ 7 o o 10 11 PERSONNEL EXPOSURES NUMBER TYPE OFSCRIPTION

[W~ool o~z 7 8 9 11 12 13 PERSONNEL INJURIFS NUI IBER CESCRIPTlON EH Lel oLul 7 89 11 12 PRO'BAELP CON 6EGIUE>ICES 7 8 9 LOSS OR OAMAGE TO FACIUTY~YPE OESCRIPTL~N 7 89 10 PUBLICITY 7-89 OTHER STATUS NA OF ACTNITY NA METHOO OF OISCOVERY 44 45 46 NA NA NA NA NA OSCQVERY OESCRIPTION LOCATION OF RELcCISE NA 80 ao 80 80 80 80~80 ADDITIONAL FACTORS CG See a e 2 for continuation of Event Descri tion and Cause Descri tion.7 89 80 7 89 H.A.Scho man PHONE.305/552 3802 CFO 881 r

H C rpp REPORTABLE OCCURRENCE 335-77-20 LICENSEE EVENT REPORT PAGE TWO EVENT DESCRIPTION (Continued)

GINCA code.This resulted in the incore alarm setpoints being 5R non-conservative.

The Florida Power 6 Light Company staff noted during an internal review that the factor had been deleted.The alarm setpoints were promptly corrected to include the penalty factor.A review of transient data for the time involved indicated that the corrected setpoints had not been exceeded.The penalty factor has been reincorporated into the setpoints.

This was the second occurrence (335-76-34) of non-conservative incore alarm setpoints.

(335-77-20).

CAUSE DESCRIPTION (Continued) factor had not been deleted from the St.Lucie Technical Specifications.

We have requested that the vendor promptly inform us of any proposed changes to the GINCA code.We are also preparing a proposed amendment to Technical Specification 4.2.1.4-to officially remove the rod bow penalty factor.

RECEIYEO 00CUHEllT PMCESSlHG Ut<lT Slt JUNKS Ni 9 04