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{{#Wiki_filter:P.O.BOX 013100, MIAMI, FL 33101~jar~~FLORIDA POWER&LIGHT COMPANY August 31, 1977 Nr.James P.O'Reilly, Director, Region II Office of Inspection and Enforcement U.S.Nuclear Regulatory Commission 230 Peachtree Street, N.W., Suite 1217 Atlanta, Georgia 30303  
{{#Wiki_filter:P. O. BOX 013100, MIAMI, FL 33101
                                                                            ~ jar ~ ~
FLORIDA POWER & LIGHT COMPANY August 31, 1977 ld -335 Nr. James P. O'Reilly, Director, Region Office of Inspection and Enforcement II U. S. Nuclear Regulatory Commission 230 Peachtree Street, N. W., Suite 1217 Atlanta, Georgia 30303


==Dear Mr.O'Reilly:==
==Dear Mr. O'Reilly:==
ld-335 REPORTABLE OCCURRENCE 335-77-32 ST.LUCIE UNIT 1 DATE OF OCCURRENCE:
 
AUGUST 1, 1977 REFUELING WATER TANK LEVEL SETPOINT DRIFT The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9 to provide 30-day notification of the subject occurrence.
REPORTABLE OCCURRENCE 335-77-32 ST. LUCIE UNIT 1 DATE OF OCCURRENCE: AUGUST 1, 1977 REFUELING WATER TANK LEVEL SETPOINT DRIFT 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,~,g.~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)
Very truly yours,
CONTROL BLOCK: ,1 UCENSEE UCENSE NUMBEA 0-0 0 0 0 0 e F L S L S 1 0 89 14 15 0 0 f PLEASE PRINT ALL REOUIRED INFORMATION)
~,g.     ~
LCENSE EVENT TYPE TYPE 4 1 1 1 1~03 26 30 31 32 REPORT REPORT CATEGORY TYPE SOUACE i 00NV~8 57 58 59 60 68 69 OOCKET NUMBEA EVENT OATE AEPOAT OATE 0 0 61~'4 75 80 EVENT OESCRIPTION Durin routine testin , 2 of the 4"Refueling Water Tank-Low" instrumentation channels 89 80 for initiation of containment sum recirculation were found to have set oints sli htl 8 9 80 out of tolerance.
D. Schmidt Vice President Power Resources MAS/cpc Attachment cc:   Robert Lowenstein, Esquire Director, Office of Inspection and Enforcement       (30)
The set oints should have been"48 inches above tank bottom" but one 8 9~80 an el tri ed at 49.1 inches and a second channel tri ed at 50.25 inches.'he set-8 9 60 6 pints were ad usted to brin them within s ecification Technical S ecification 3.3.2.1 8 8 COOS COO E~ZS~E 1 8 9 10 11 12 CAUSE OESCRIPTION COMPONENT COOE N S T R U~N 17 43 S 1 8 5 47 80 The cause a ears to hav been instrument drift.More fre uent testin of these instru-8 9 60 ments has shown no si nificant anomalies.
Director, Office of Management Information and Program Control (3)
If an roblem is found in the future the 8 9 80 instruments will be re laced, the old instruments will be evaluated, and a followup LER 89 OTHER STATUS NA AMOUNT OF ACTIVITY NA FACILITY STATUS%POWER~E~ip 0 8 9 10 12 13 FOAM OF ACTIVITY CO A TENT RELEASEO OF RELEASE LzJ hJ PERSONNEL EXPOSURES NUMBER TYPE 0ESCAIPTKlN
 
~oo 0~z 89 11 12 13 PERS'ONNEL IN JURIES NUMBER 0ESClVPTION 0 0 0 8 9 11 12 ROBABLE CONSEQUENCES
                                                                                          '4 e
'ETHOO OF OlSCOVEAY B 44 45 46 44 45 NA 80 OICOVERY OESCAIPTlON NA 60 LOCATCN OF RELEASE NA 60 80 89 LOSS OR OAMAGE TO FACILITY'TYPE OESCAlPTlON g~z 89 10 PUBUCITY 89 NA NA 60~60 AOOITIONAL FACTORS I]See a e two for continuation of Event Description and Cause Description.
CONTROL BLOCK:                                                                             fPLEASE PRINT ALL REOUIRED INFORMATION)
89 80 89 M.A.Scho PHDNF.(305)552-3802 80 REPORTABLE OCCURRENCE 33-77-32 LICENSEE EVENT REPORT PAGE TWO EVENT DESCRIPTION (Continued)
                                                    ,1 UCENSEE                                                                                             LCENSE              EVENT UCENSE NUMBEA                                   TYPE                TYPE F    L    S    L    S    1                  0   0   0       0 0     0   0         0   0         4   1   1   1   1     ~03
This was the first occurrence of this type at St.Lucie Unit l.(335-77-32)
            ~
CAUSE DESCRIPTION (Continued) will be submitted.
89                                14                15                                                    26                 30     31     32 REPORT                 REPORT CATEGORY         TYPE               SOUACE               OOCKET NUMBEA                         EVENT OATE                   AEPOAT OATE i 00NV                                                        0       0 8        57      58        59                    60      61                         ~
Also, since the actual RWT level is always maintained at least one foot higher than the minimum required by Technical Specification 3.5.4, a recirculation phase setpoint drift of 2.25 inches poses no significant safety consideration from the standpoint of water volume available in the RWT prior to recirculation.}}
68    69                            75                     80 EVENT OESCRIPTION Durin routine testin ,                                 2   of the   4 "Refueling Water Tank               Low"     instrumentation channels 89                                                                                                                                                         80 for initiation of containment                                 sum   recirculation           were found to have set           oints     sli htl 8 9                                                                                                                                                       80 out of tolerance.                             The   set oints should have been "48 inches above tank bottom" but one 8 9                                                                                                                                                       80 el tri               at 49.1 inches and a second channel tri ed at 50.25 inches. 'he set-
                                                                                  ~
an                  ed 8 9                                                                                                                                                       60 6       pints were           ad   usted to brin them within s ecification Technical S ecification 3.3.2.1 8 8                                                                                                                                                       80 COOS       COO E                           COMPONENT COOE
    ~ZS           ~E               1               N   S   T   R   U       ~N               S   1   8     5 8 9 10              11          12                                    17      43                              47 CAUSE OESCRIPTION The cause a             ears to hav                     been instrument         drift.       More   fre uent testin of these instru-8 9                                                                                                                                                       60 8 9 FACILITY ments has shown no                             si nificant       anomalies.         If an       roblem is found in the future the 80 instruments           will be                   re laced, the old instruments                 will be     evaluated, and     a   followup   LER 89                                                                                                                                                       80
                                                  'ETHOO OF STATUS             % POWER                             OTHER STATUS          OlSCOVEAY                        OICOVERY OESCAIPTlON 8
        ~E 9
                        ~ip 10 0
12 13 NA 44 B
45      46 NA 60 FOAM OF ACTIVITY       CO ATENT RELEASEO     OF RELEASE                        AMOUNT OF ACTIVITY                                            LOCATCN OF RELEASE LzJ             hJ                                     NA 44      45 NA 60 PERSONNEL EXPOSURES NUMBER           TYPE         0ESCAIPTKlN
    ~oo         0       ~z                                                                 NA 89               11       12     13 PERS'ONNEL INJURIES NUMBER           0ESClVPTION 0   0     0 8 9               11   12                                                                                                                                 80 ROBABLE CONSEQUENCES 89 LOSS OR OAMAGE TO               FACILITY'TYPE OESCAlPTlON g ~z                                                                                       NA 89         10                                                                                                                                           60 PUBUCITY NA 89                                                                                                                                                       ~ 60 AOOITIONAL FACTORS I]   See     a e two       for continuation of                         Event Description and Cause Description.
89                                                                                                                                                         80 89                                                                                                                                                       80 M. A. Scho                                                                         PHDNF. (305) 552-3802
 
REPORTABLE OCCURRENCE 33   32 LICENSEE EVENT REPORT PAGE TWO EVENT DESCRIPTION   (Continued)
This was the first occurrence of   this type at St. Lucie Unit l.
(335-77-32)
CAUSE DESCRIPTION   (Continued) will be submitted. Also, since the actual RWT level is always maintained at least one foot higher than the     minimum required by Technical Specification 3.5.4, a recirculation phase setpoint     drift of 2.25 inches poses no significant safety consideration from the standpoint of water volume available in the RWT prior to recirculation.}}

Latest revision as of 07:19, 21 October 2019

LER 1977-335-32 for St. Lucie, Unit 1 on Refueling Water Tank Level Setpoint Drift
ML18110A875
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 08/31/1977
From: Schmidt A
Florida Power & Light Co
To: O'Reilly J
NRC/IE
References
LER 1977-335-32
Download: ML18110A875 (3)


Text

P. O. BOX 013100, MIAMI, FL 33101

~ jar ~ ~

FLORIDA POWER & LIGHT COMPANY August 31, 1977 ld -335 Nr. James P. O'Reilly, Director, Region Office of Inspection and Enforcement II U. S. Nuclear Regulatory Commission 230 Peachtree Street, N. W., Suite 1217 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

REPORTABLE OCCURRENCE 335-77-32 ST. LUCIE UNIT 1 DATE OF OCCURRENCE: AUGUST 1, 1977 REFUELING WATER TANK LEVEL SETPOINT DRIFT 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,

~,g. ~

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)

'4 e

CONTROL BLOCK: fPLEASE PRINT ALL REOUIRED INFORMATION)

,1 UCENSEE LCENSE EVENT UCENSE NUMBEA TYPE TYPE F L S L S 1 0 0 0 0 0 0 0 0 0 4 1 1 1 1 ~03

~

89 14 15 26 30 31 32 REPORT REPORT CATEGORY TYPE SOUACE OOCKET NUMBEA EVENT OATE AEPOAT OATE i 00NV 0 0 8 57 58 59 60 61 ~

68 69 75 80 EVENT OESCRIPTION Durin routine testin , 2 of the 4 "Refueling Water Tank Low" instrumentation channels 89 80 for initiation of containment sum recirculation were found to have set oints sli htl 8 9 80 out of tolerance. The set oints should have been "48 inches above tank bottom" but one 8 9 80 el tri at 49.1 inches and a second channel tri ed at 50.25 inches. 'he set-

~

an ed 8 9 60 6 pints were ad usted to brin them within s ecification Technical S ecification 3.3.2.1 8 8 80 COOS COO E COMPONENT COOE

~ZS ~E 1 N S T R U ~N S 1 8 5 8 9 10 11 12 17 43 47 CAUSE OESCRIPTION The cause a ears to hav been instrument drift. More fre uent testin of these instru-8 9 60 8 9 FACILITY ments has shown no si nificant anomalies. If an roblem is found in the future the 80 instruments will be re laced, the old instruments will be evaluated, and a followup LER 89 80

'ETHOO OF STATUS  % POWER OTHER STATUS OlSCOVEAY OICOVERY OESCAIPTlON 8

~E 9

~ip 10 0

12 13 NA 44 B

45 46 NA 60 FOAM OF ACTIVITY CO ATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATCN OF RELEASE LzJ hJ NA 44 45 NA 60 PERSONNEL EXPOSURES NUMBER TYPE 0ESCAIPTKlN

~oo 0 ~z NA 89 11 12 13 PERS'ONNEL INJURIES NUMBER 0ESClVPTION 0 0 0 8 9 11 12 80 ROBABLE CONSEQUENCES 89 LOSS OR OAMAGE TO FACILITY'TYPE OESCAlPTlON g ~z NA 89 10 60 PUBUCITY NA 89 ~ 60 AOOITIONAL FACTORS I] See a e two for continuation of Event Description and Cause Description.

89 80 89 80 M. A. Scho PHDNF. (305) 552-3802

REPORTABLE OCCURRENCE 33 32 LICENSEE EVENT REPORT PAGE TWO EVENT DESCRIPTION (Continued)

This was the first occurrence of this type at St. Lucie Unit l.

(335-77-32)

CAUSE DESCRIPTION (Continued) will be submitted. Also, since the actual RWT level is always maintained at least one foot higher than the minimum required by Technical Specification 3.5.4, a recirculation phase setpoint drift of 2.25 inches poses no significant safety consideration from the standpoint of water volume available in the RWT prior to recirculation.