ML18113A297

LER 1976-045-00 for St. Lucie Unit 1, During Plant Heatup, Low Pressure Safety Injection Pumps Were Stopped When System Pressure Had Been Raised Above 250 Psia

ML18113A297
Person / Time
Site:	Saint Lucie
Issue date:	12/28/1976
From:	Schmidt A D Florida Power & Light Co
To:	Moseley N C NRC/IE, NRC/RGN-II
References
PRN-LI-76-313 LER 1976-045-00
Download: ML18113A297 (8)

Text

NRC FDRM 195 I2-76 I U.S.NUCLEAR REGULATOR MISSION DOCKET NUMBER NRC DISTRIBUTION FOR PART 50 DOCKET MATERIAL 50-335 LETTER~ORIGINAL QCOPV ClNOTORIZED J5NCLASSIF I ED Norman C.Moseley TO: PROP INPUT FORM FROM: Florida Power 8a Light Co.Miam'1, Florida 33101 A.D.Schmidt FILE NUMBER INCIDENT REPORT DATE OF DOCUMENT 12-28-76 DATE RECEIVED 1-14-77 NUMSER OF COPIES RECEIVED 1 signed.org.DESCRIPTION Ltr.Trans The Following:

Licensee Event Report (RO-50-'335/t76 45)onll-28-76 concerning (LPSI)pumps vere stopped.when sys'em pressure raised.above 250 psia due to fifteen minute transitoion time limit was exceeded..

~.PLANT NAME.ST LUCIE UNIT l~ACKNOWLEDGED DO NOT REMOVE C I e~e I v ec'8)~~P~7 NOTE: IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J, COLLINS'BRANCH CHIEF!W 3 CYS.FOR ACTION LIC, ASST': W$CYS ACRS CYS 5 i'FOR ACTION/INFORMATION REG FILE'NRC PDR I&E 2 MIPC SCHROEDER/IPPOLITO HOUSTON NOVAK/CHECK GRIMES CASE BUTLER HANAUER TEDESCO/MACCARY Jt EISENHUT BAER SHAO VOLLMER/BUNCH KREGER/J COLLINS INTERNAL DISTRI BUTION LPDR TIC: N~EXTERNAL DISTRIBUTION CONTROL NUMBER p l t P.0)BOX 013100, MIAMI, I FL 33101 Oj,418v~sea@55 FLORIDA POWER&LIGHT COMPANY December 28, 1976 PRN-LI-76-313 n 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

Dear Mr.Moseley:

~D go~ac u~gpss 1<np~gi'g~<'i C REPORTABLE OCCURRENCE 335-76-45 ST.LUCIE UNIT 1 DATE OF OCCURRENCE:

NOVEMBER 28, 1976 ll SHUTDOWN COOLING FLOW 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, 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)PEOPLE...SERVING PEOPLE 4 Pa P 4~

CONTROL 8LOCK: LICENSEE EVENT REPORT 1 LEasE PRwT aU.REauIREn INFORMaTIom) 6 ,7 89 UCENSEE 14 15 UCENSE NUMBER 0 0 0-0 0 EVENT TYPE UCENSE TYPE 4 1 1 1 1~03 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE~01 CCN'I~~L L 7 8 57 58 59 60 OOCKET NUMBER EVENT OATE 0 5 0-0 3 3 5 l l 2 8 61 68 69 74 75 REPORT OATE 2 80 EVENT OESCRIPTION

[oOz]Durin lant heatu , the Low Pressure Safet In'ection (LPSI um s were 89[OD3]sto ed when s stem ressure had been raised above 250 sia.The LPSI 7 89 t004]um s which are also used for shutdown coolin SDC were sto ed 7 8 9 Qo 5 because the maximum ressure for shutdown coolin s stem o eration is 7 8 9 268 sia.Transition to the.Reactor Coolant Pumps RCP's was de av 80 80 80 7 8 9 SYSTEM CAUSE COOE COOE COMPONENT COOE IQD>]~CF A.P U M PX X 7 8 9 10 11 12 17 CAUSE OESCRIPTION The fi t m'ra i io PRME COMPO N&lT SUP PLGI MANUFACTURER B 5 8 0 44 47 time imi was exceed N 48 80 80 7 8 9 Q~O startin RCP'.0 erations ersonnel have been instructed on the 7 8 9~80 tOOI on the 6.9 KV buses which revented o erations ersonnel from immediatel 7 89 IZ~"I I3LI lZaLJ 7 8 9 10 12 13 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE EH LiJ LiJ 7 8 9 10 11 PERSONNEL EXPOSURES 7 89 11 12 13 PERS'ONNEL IN JURIES NUMBER"'ESCRIPTION

~~4~00 0 7 8 9 11 12 OTHER STATUS AMOUNT OF ACTIVITY N A PROBABLE CONSEQUENCES 7 8 9 LOSS OR DAMAGE TO FACILITY TYPE OESCR:PTION z 7 89 10 PUSLICITY 7 8 9 AOOITIONAL FACTORS METHOO OF OISCOVERY 44 45 46 44 45 N A N A N A N/A OISCOVERY DESCRIPTION LOCATION OF RELEASE N A 80 80 80 80 80 80 7 89 aio o D s ri'on and ause Descri tion.80'7 89 NAME.M.A.Scho man PHONE.3 05 552-37 7 9 80 CPO ddt ddT y~

Reportable Occurrence 335-76-45 Licensee Event Report Page Two Event Descri tion (Continued) because the 6.9 KV buses from which they.receive power were de-energized.

The 6.9 KV buses were energized and the RCP's were started, but the transition from SDC to RCP operation exceeded the fifteen minute time limit of Technical Specification 3.4.l.Similar occurrences which involved ex-ceeding the time allowed for transition from SDC to RCP operation were described in Reportable Occurrences 335-76-6, 335-76-40, and 335-.76-41, however, this was the first such occurrence caused by the 6.9 KV buses being de-energized.

(335-76-45).

Cause Descri tion (Continued) importance of ensuring proper initial conditions at the beginning of plant evolutions.

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