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| issue date = 08/05/1976 | | issue date = 08/05/1976 | ||
| title = 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 | | title = 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 | ||
| author name = Schmidt A | | author name = Schmidt A | ||
| author affiliation = Florida Power & Light Co | | author affiliation = Florida Power & Light Co | ||
| addressee name = Moseley N | | addressee name = Moseley N | ||
| addressee affiliation = NRC/IE, NRC/RGN-II | | addressee affiliation = NRC/IE, NRC/RGN-II | ||
| docket = 05000335, 05000389 | | docket = 05000335, 05000389 | ||
Line 17: | Line 17: | ||
=Text= | =Text= | ||
{{#Wiki_filter: | {{#Wiki_filter: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 ~ | |||
()DO NOT REMOVE NOTE: IFi PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGEH/J..COLLINS aHANCH CHIEF: M CYS i<OR ACTION TIC..ASST.: | ACKNOWLEDGED (1-P) ( ) DO NOT REMOVE PLANT NAME; NOTE: IFi PERSONNEL EXPOSURE IS INVOLVED | ||
W CYS | '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 | '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 | |||
~<NI': AUGl21976~"~~g P>~clthk NCQA'~X | , r F Pt V f 4 | ||
'MJ/glow lp REPORTABLE OCCURRENCE 335-76-33 ST.LUCIE UNIT 1 DATE OF OCCURRENCE: | ~ . AO E | ||
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. | l ~ | ||
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 | C 1 | ||
The valve lineup was checked and a crossover valve 7 8 9~ | /II//g l:: | ||
FLORIO'OV'iR < uGv> car.'.~;,~ ~ | |||
[~$3[gJgi JJJ[zJ as 11 12 13 PERSONNEL | August 5, 1976 PRN-LI-76-198 Mr. Norman C. Moseley, Director, Region II ~<NI': | ||
~4 oo o 7 8 9 11 12 PROBABLE CONSEQUENCES | Office of Inspe'ction and Enforcement U. S. Nuclear Regulatory Commission 230 Peachtree Street, N.W., Suite 818 AUGl21976 ~ "~~ | ||
~15 | Atlanta, Georgia 30303 g P> ~clthk NCQA'~X | ||
+18 See Pa e 2 for continuation of Event Description 7 8 9 | ''-'ow~isso>i | ||
'a P.O.BOX 3100 MIAMI, FLORIDA 33101 FLORIDA POWER 5 LIGIIT COMPANY August 5, 1976 PRN-LI-76-198 (Mr.Norman C.Moseley, Director, Region II Office of Inspection and Enforcement U.S.Nuclear Regulatory Commission 230 Peachtree Street, N.W., Suite 818 Atlanta, Georgia 30303 | + 'MJ /glow lp | ||
==Dear Mr. Moseley:== | |||
REPORTABLE OCCURRENCE 335-76-33 ST. LUCIE UNIT 1 DATE OF OCCURRENCE: JULY 5, '1'976 REFUELING WATER TANK The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9 to provide 30-day notification of the subject occurrence. | |||
Very truly yours, chmidt ice President Power Resources MAS:pg cc: Jack R, Newman, Esquire Director, Office of Inspection and Enforcement (30) | |||
Director, Office of Management Information and Program Control (3) nL paCKETKa! | |||
Q$ 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}} | A t 1}} |
Latest revision as of 04:26, 3 February 2020
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