ML18113A321

LER 1976-033-00 for St. Lucie Unit 1, While Pumping Water from Primary Water Tank to Spent Fuel Pool, Operations Personnel Found Refueling Water Tank Was Overflowing

ML18113A321
Person / Time
Site:	Saint Lucie
Issue date:	08/05/1976
From:	Schmidt A Florida Power & Light Co
To:	Moseley N NRC/IE, NRC/RGN-II
References
PRN-LI-76-198 LER 1976-033-00
Download: ML18113A321 (11)

Text

NII 0 I:ofIM-106 I2 70)'u.s.NucLEAn nrouI.ATonv cof sfoN Docllr T NUMoFB 50-335 NRC DISTRIBUTION ron PART 60 DOCI(ET MATI:-RIAL F ILc NUMOEfl INCIDI hIT HI'".VOHT TO: Lc TTcn QonfoINAI.

+copv DCSCfIII'TION QNOTOBIZED UN C LASS IF I E D Mr.Norman,C~Moseley pnop INPUT FoflM ENCLOSURE FROM: Florida Power&Light Company Miami, Florida-A.D.Schmi.dt DATC OF DOCUMCNT 8/5/76 DATE flCCCIVCD 8/12/76 NUMOEB OF COPIES BECFIVED One signed copy Ltr.'trans the following:

PLANT NAME;'St.Lucie 81 (1-P)Li.censee Event Report (RO 50-335/76-33) on 7/5/76 concerning'the Refueling Mater Tank overflowing while pumping water from the primary water tank to the spent fuel, pool~ACKNOWLEDGED

()DO NOT REMOVE NOTE: IFi PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGEH/J..COLLINS aHANCH CHIEF: M CYS i<OR ACTION TIC..ASST.:

W CYS ACHS CYS HOLDTNG SEN'm n Di s FOR ACTION/INFORMATION

'NTERNAL 0 IST Rl BUTION NHC PDR ICE 2 hIIPC SCHROEDEH IPPOLITO HOUSTON NOVAK CHECK GRIMES CASE HlTLEH'ANAUER TEDESCO hIACCARY EISENIIUT P~R SHAO VOLLhlEH ZmrCH KHEGER J.COLLINS LPDH.TIC: EXTERNAI.DISTRIBUTION CONTROL NUMBER r , r F Pt V f~.AO 4 E l~C 1

'/II//g l:-: FLORIO'OV'iR

<uGv>car.'.~;,~

~August 5, 1976 PRN-LI-76-198 Mr.Norman C.Moseley, Director, Region II Office of Inspe'ction and Enforcement U.S.Nuclear Regulatory Commission 230 Peachtree Street, N.W., Suite 818 Atlanta, Georgia 30303

Dear Mr.Moseley:

~<NI': AUGl21976~"~~g P>~clthk NCQA'~X+-'ow~isso>i

'MJ/glow lp REPORTABLE OCCURRENCE 335-76-33 ST.LUCIE UNIT 1 DATE OF OCCURRENCE:

JULY 5,'1'976 REFUELING WATER TANK 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, chmidt ice President Power Resources MAS:pg cc: Jack R, Newman, Esquire Director, Office of Inspection and Enforcement (30)Director, Office of Management Information and Program Control (3)nL paCKETKa!Q$8KQ ggQ jg1S7Žg lg(g'c gyral'EAR RE~()g g peg QQC~g~~los LICENSEE EVENT REPORT CONTROL BLOCK: 1 L&cNSEE NAME 01-F L UCENSE NUM8ER 0 0 0 7 89 14'EPORT CATFGORY TYPE~os ccav~~z, 7 8 57 58 59 15 REPORT SOURCE'OCKET NUM8ER L 0 5 0-0 3 3 60 61 (P E PRINT ALL REQUIRED INFORMATION]

UCENSE CLIENT TYPE TYPE 4 25 26 30 31 32 6 80'EVENT OATS REPORT OATE 07057'608057 68 69 74 75 EVENT DESCRIPTION QOg W'm in water from the rimar water tank to the s ent fuel ool 7 8 9 Qpg operations personnel found that the Refueling Water Tank (RWT)was 80=7 89 80 tOgpj overflowing.

The valve lineup was checked and a crossover valve 7 8 9~~eo[os]between the RWT'and the spent fuel pool system was found open.The 7 8 9 Qo g valve was closed and'he RWT was recirculated'n order to get a 80 47 es PAME SYSTEM CAUSE COMPONENT COMPONENT COOE COOE COMPONENT COOE SUPPLER MANUFACTURER VC Q077~RB~A A C C U M U~A C 3 l 0 7 8 9 10 11 12 17 43 44 CAUSE DESCRIPTION Qo 8 A crossover valve between the RWT and the s ent fuel ool s stem was 80 e 7 8 9 tocm inadvertently left open causing the RWT boron concentration to be 7 8 9 Q~O diluted below 1720 m.80 80 OTHER STATUS N A 7 8 9 LOSS OR DAMAGE TO FACIUTY TYPE OESCRIPTION

.z 7 89~10 PUBLICITY 7 89 Q~g a 9 10 12 13 FORM OF ACTMTY CO@TENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY Hl LzJ IzJ 7 8 9 10 11 PERSONNEL EXPOSURES NUMSER TYPE OESCRIPTION

[~$3[gJgi JJJ[zJ as 11 12 13 PERSONNEL IN JURIES OESCRIPTION

~4 oo o 7 8 9 11 12 PROBABLE CONSEQUENCES

~15 METHOO OF OISCOVERY 44 45 46 44 45 N A N/A N/A N/A N/A OISCOVERY OESCRIPTION N A LOCATION OF RELEASE N A 80 80 80 80 80 80 7 89 ADDITIONAL'ACTORS

+18 See Pa e 2 for continuation of Event Description 7 8 9~80 80 7 89 NAME: N-A.Scho oman PHONE: 305 552 3779 80 CPO 88I~gCT REPORTABLE OCCUR CE 335-76-33 L~CQNSEE EVENT REPORT PAGE TWO representative boron concentration sample.Sample analysis indicated a boron concentration of 1653 ppm which was below-the minimum boron concentration of 1720 ppm specified in Technical Specification 3.5.4.Concentrated boric acid was added and a'ample taken one hour later indicated a boron concentration greater that 1720 ppm.This was the second occurrence at St.Lucie Unit 1 affecting a borated water source, however, the two occurrences were unrelated with respect to cause.The first occurrence (335-76-32) involved a leaking gasket on a relief valve in the boric acid makeup system.(335-76-33).

'a P.O.BOX 3100 MIAMI, FLORIDA 33101 FLORIDA POWER 5 LIGIIT COMPANY August 5, 1976 PRN-LI-76-198 (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:

REPORTABLE OCCURRENCE 335 76-33 ST.LUCXE UNXT 1 DATE OF OCCURRENCE:

'ULY 5,1'976 REFUELXNG WATER TANK 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, chai,dt Vice President Power Resources MAS pg cc: Jack R, Newman, Esquire Director, Office of Xnspection and Enforcement (30)Director, Office of Management Xnformation and Program Control (3)HELPING BUILD FLORIDA LICENSEE EVENT REPORT CONTRQL BLOCK: (PLEASE PRINT ALL REQOIRED INFORIVIATION).

01 F L.7 89 UCENSEE NAME LICENSE NUMBER 0 0 0'14 15 4 25 26 UCENSE TYPE EVENT TYPE 30 31 32" REPORT REPORT , CATEBORY TYPE SOURCE OOCKET NUMBER EVENT OATE[OD1]OON'T~

L~L 0 5 0-.0'3, 3ii3 0 7 0 3'7 7 8 57 58 59 60 61 68 69 REPORT OATE 6 0 8 0 5 7 6 74 75 80 EVENT DESCRIPTION

@02 W i um in water from the.rimar water tank to the s ent fuel ool 7 8 9 top3]operations personnel found that the Refueling Water Tank (RWT)was 7 89 Qp~]overflowing.

The valve lineup was checked and a crossover valve 7 8 9~05 between the RWT and the spent fuel pool system was found open.The"7 89 tOOI valve was closed and the RWT was recirculated in order to get a;N 7 8 9~09 inadvextently left open causing the RWT boron concentration to be 7 8 9 PRME SYSTEM CAUSE COMPONENT COMPONENT COOE COO E COMPONENT COOE SUPPlKA MANUFACTURER VclATKlN[P]~RB~A A C C U M U~A C 3 3 0: 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION A crossover valve between the RWT and the s ent fuel ool s stem was 80 80 80 80 80 80 OTHER STATUS N A 7 8 9 , Q~O diluted below.1'720 m.7 89 FACIUTY STATUS POWER[rJ~B 7 8 9 10 12 13 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY KRI 7 8 9 10 11 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION

[~@3~IJJJ~z 7 8 9 11 12 13 PERSONNEL INJURIES NUMBER OESCRIPTION

~4~oo 0 7 89 11 12 PROBABLE CONSEQUENCES QS]7 8 9 LOSS OR DAMAGE TO FACILITY TYPE OESCRIPTION z 7 89 10 PUBLICITY[is~]7 8 9 METHOO OF OISCOVERY Ll 44 45 46 44 45 N A N A N/A N/A N/A OISCOVERY OESCRIPTION N A LOCATION OF RELEASE N A 80 80 80 80 80 80 80 80~80 ADDITIONAL FACTORS'18]

See Pa e 2 for continuation of Event Description 7 8 9 80 7 89 NAME M.A.scho man PHONE.305 552 3779 80 GPO Gbl dGT v-I i, REPORTABLE OCC-~/CD 335-.76-33 LICENSEE EVENT@PORT PAGE TWO'I l;representative boron concentration sample.Sample analysis in zca e a or d'd a boron concentration of 1653 ppm, which was below s ecified in the minimum boron concentration of 1720 ppm speci Technical Specification 3.5.4.Concentrated boric a'cid was added and a sample taken one hour later indicated a boron concentration greater that 1720 ppm.This was the secon cond occurrence at St.Lucie Unit 1 affecting a borated related with t source however, the two occurrences were un respect to cause.The first occurrence (335-7-)I I 6-32 involved a leaking gasket on a relief valve in the boric acid makeup system.(335-76-33)

.

A t 1