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

NII0 I:ofIM-106 ' u.s. NucLEAn nrouI.ATonv cof sfoN Docllr T NUMoFB 50-335 I2 70)

F ILc NUMOEfl NRC DISTRIBUTION ron PART 60 DOCI(ET MATI:-RIAL INCIDI hIT HI'".VOHT TO: FROM: DATC OF DOCUMCNT Florida Power & Light Company 8/5/76 Mr. Norman,C ~ Moseley Miami, Florida- DATE flCCCIVCD A. D. Schmi.dt 8/12/76 Lc TTcn QNOTOBIZED pnop INPUT FoflM NUMOEB OF COPIES BECFIVED QonfoINAI. UN C LASS IF I E D

+copv One signed copy DCSCfIII'TION ENCLOSURE Ltr. 'trans the following: 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 (1-P) ( ) DO NOT REMOVE PLANT NAME; NOTE: IFi PERSONNEL EXPOSURE IS INVOLVED

'St. Lucie 81 SEND DIRECTLY TO KREGEH/J..COLLINS FOR ACTION/INFORMATION aHANCH CHIEF: n M CYS i<OR ACTION TIC..ASST.: Di s W CYS CYS HOLDTNG SEN'm ACHS

'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 EXTERNAI. DISTRIBUTION CONTROL NUMBER LPDH.

TIC:

r

, r F Pt V f 4

~ . AO 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 ~<NI':

Office of Inspe'ction and Enforcement U. S. Nuclear Regulatory Commission 230 Peachtree Street, N.W., Suite 818 AUGl21976 ~ "~~

Atlanta, Georgia 30303 g P> ~clthk NCQA'~X

-'ow~isso>i

+ 'MJ /glow lp

Dear Mr. Moseley:

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 jg1S7 g

lg( g'c gyral'EAR RE~

g QQC g ()

~g~ ~los peg

LICENSEE EVENT REPORT CONTROL BLOCK: (P E PRINT ALL REQUIRED INFORMATION]

1 L&cNSEE UCENSE CLIENT NAME UCENSE NUM8ER TYPE TYPE 01- F L 0 0 0 4

~

7 89 14 15 25 26 30 31 32

'EPORT REPORT 7

~os ccav 8

CATFGORY 57 58 TYPE

~z, 59 SOURCE L

60 61 0

'OCKET 5 0 NUM8ER 0 3 3 68 69 07057'608057 EVENT OATS 74 75 REPORT OATE 6

80 '

QOg 7 8 9 W 'm EVENT DESCRIPTION in water from the rimar water tank to the s ent fuel ool operations personnel found that the Refueling Water Tank (RWT) was 80 =

Qpg 7 89 80 tOgpj overflowing. The valve lineup was checked and a crossover valve 7 8 9 ~

eo between the RWT 'and the spent fuel pool system was found open. The

~

[os]

7 8 9 80 Qo g valve was closed and'he RWT was recirculated'n order to get a es PAME 80 e SYSTEM CAUSE COMPONENT COMPONENT Q077 7 8 9 10 COOE

~RB COOE

~A 11 12 A C COMPONENT COOE C U M U 17 SUPPLER

~A 43 44 C 3 l MANUFACTURER 0

47 VC CAUSE DESCRIPTION Qo 8 A crossover valve between the RWT and the s ent fuel ool s stem was 7 8 9 80 tocm inadvertently left open causing the RWT boron concentration to be 7 8 9 80 Q~O diluted below 1720 m.

7 89 METHOO OF 80 OTHER STATUS OISCOVERY OISCOVERY OESCRIPTION Q~g N A N A a 9 10 12 13 44 45 46 80 FORM OF ACTMTY CO@TENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Hl 7 8 9 LzJ IzJ 10 11 44 45 N A 80 PERSONNEL EXPOSURES NUMSER TYPE OESCRIPTION

[~$ 3 [gJgi JJJ [zJ N A as 11 12 13 PERSONNEL INJURIES OESCRIPTION

~4 oo o N/A 7 8 9 11 12 80 PROBABLE CONSEQUENCES

~15 N/A 7 8 9 80 LOSS OR DAMAGE TO FACIUTY TYPE OESCRIPTION

. z N/A 7 89 ~ 10 80 PUBLICITY N/A 7 89 ~ 80 ADDITIONAL'ACTORS

+18 See Pa e 2 for continuation of Event Description 7 8 9 80 7 89 80 NAME: N- A. Scho oman PHONE: 305 552 3779 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).

UCENSEE UCENSE EVENT NAME LICENSE NUMBER TYPE TYPE 01 F L 0 0 0' 4

.7 89 14 15 25 26 30 31 32 REPORT REPORT

, CATEBORY TYPE SOURCE OOCKET NUMBER EVENT OATE REPORT OATE

[OD1]OON'T~ L ~L 0 5 0 .0 '3, 3ii3 0 7 0 3 '7 6 0 8 0 5 7 6 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION 7

@02 8 9 W i um in water from the rimar water tank to the s ent fuel ool 80 top3] operations personnel found that the Refueling Water Tank (RWT) was 7 89 80 Qp~] overflowing. The valve lineup was checked and a crossover valve 7 8 9 80

~05 between the RWT and the spent fuel pool system was found open. The "7 89 80 tOOI valve was closed and the RWT was recirculated in order to get a; 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT COOE COO E COMPONENT COOE SUPPlKA MANUFACTURER VclATKlN

[P] ~RB 7 8 9

~A A C C U M U ~A C 3 3 0: N 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 7 8 9 80

~09 inadvextently left open causing the RWT boron concentration to be 7 8 9 80

, Q~O diluted below .1'720 m.

7 89 80 FACIUTY METHOO OF 7 8 STATUS 9

[rJ FORM OF

~B 10 POWER 12 13 OTHER STATUS N A 44 OISCOVERY Ll 45 46 OISCOVERY OESCRIPTION N A 80 ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE KRI N A 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION 7

[~@3 8 9

~IJJJ 11

~z 12 13 N A 80 PERSONNEL INJURIES NUMBER OESCRIPTION

~4 ~oo 0 N A 7 89 11 12 80 PROBABLE CONSEQUENCES QS] N/A 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE OESCRIPTION z N/A 7 89 10 80 PUBLICITY

[is~] N/A 7 8 9 ~ 80 ADDITIONAL for continuation of FACTORS'18]

See Pa e 2 Event Description 7 8 9 80 7 89 80 NAME M. A. scho man PHONE.305 552 3779 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 ind'zca e d a boron or 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 cond occurrence at St. Lucie Unit 1 affecting a borated secon t source I however,I the two occurrences were un related with respect to cause. The first occurrence (335-7 6-32 ) involved a leaking gasket on a relief valve in the boric acid makeup system. (335-76-33) .

A t 1