ML18227A440
| ML18227A440 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 02/25/1976 |
| From: | Schmidt A Florida Power & Light Co |
| To: | Moseley N NRC/RGN-II |
| References | |
| PRN-LI-76-30 | |
| Download: ML18227A440 (7) | |
Text
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NRC DISTR>IRUTION roA PART 50 DOCI<ET MATERIAL DOCKET NUMOER 50-251 FILr NUMBER INCIDENT REPORT TO:
N.
C. Moseley FROM:
~Florida Power 6 Light Miami, Florida -33101 A. D. Schmidt DATE OF DOCUMENT 2-25-76 DATE RECEIVED 3-4-76
~ETTER
&ORIGINAL Q COPY QNOTOR IZED Q VNC LASS IF I E D PROP INPUT FOAM NUMBER OF COPIES RECEIVED 1 si ned DESCRIPTION Ltr trans the following reportable occurrence:
ENCLOSU AE Reportable Occurrence'251-76-1.
on 1-30-76 re High Setpoint for Overtemperature DELTA-T Reactor Trip Channel II (1 cy encl' PLANT NAME.
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FLORIDA POWER 5 LIGHT COMPANY February 25, 1976 PRN-LI-76-30 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 251-76-1 TURKEY POINT UNIT 4 DATE OF OCCURRENCE:
JANUARY 30, 1976 HIGH SETPOINT FOR OVERTEMPERATURE DELTA-T REACTOR TRIP CHANNEL II The attached Licensee Event. Report is being submitted in accordance with Technical Specification 6.9.2 to provide 30-day notification of the subject occurrence.
Very truly yours,
.chmidt Vice President Power Resources MAS/jn Attachment cc:
Jack R.
Newman, Esquire Director, Office of Inspection and Enforcement (40)
Director, Office of Management Information and Program Control (3)
HELPING BUILD FLORIDA
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~ LICENSEE EVENT REPORT Jog 7
89 CONTROL BLOCK:
UCENSEE NAME L'T P
LICENSE NUMBER 0
0 14 15 t'PLEASE PRINT ALLREQUIRED INFORMATION)
LICENSE EVENT TYPE TYPE 0
0 4
1 1
1 1
~0033 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE I001IGQNT~
L L
0 7
8 57 58 59 60 61 DOCKET NUMBER EVENT DATE REPORT DATE 5
0 0 2
5 1
0 l 3 0
7 6
0 2
2'57 68 69 74 75 80 EVENT DESCRIPTION
[0D2J.
Durin a
eriodic test.
7 8 9 the Channel Two overtem erature delta-T reactor 80 7
89
[oO~]
ermitted b Technical S ecification 2.3.
Redundant, Channels One 80 7
8 9 Qo g and Three were available and o erable thereb satisf in the re-7 8 9
[oD~J uirement that at least two overtem erature delta-T channels be 80 80 7
89 PRME SYSTEM CAUSE COMPONENT CODE CODE COMPONENT CODE SUPPLER
~0> ~IA
~E I'N 0 T R U
N 7
8 9 10 11 12 17 43 CAUSE DESCRIPTION
~08 The failure of two 500 MFD filter ca COMPONENT MANUFACTURER H
0 2
0 Y
44 47 48 acitors in si nal summator 80 7
8 9
[0Dg TM-4-422F, 'Model 4lll084-004, ermitted an a >~c.> si nal to be su er-7 8 9
@~ 0 im osed on a d. c. si'al in th'e corn arator that corn ares the actual 80 80 OTHER STATUS NA 7
8 9 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION tj66 z
7 89 10 PUBLICITY 7
89 NA NA 7
89 FACIUTY STATUS POWER o
o 7
8 9
10 12 13 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY Q~g z
z NA 7
8 9
10 11 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION
~13 ~I~0 z
7 89 11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION Q~~j Loaoo 7
89 11 12 PROBABLE'ONSEQUENCES
~15 NA METHOD OF DISCOVERY b
44 45 46 44 45 DISCOVERY DESCRIPTION NA LOCATION OF RELEASE NA 80 80 80 80 80 80 80 80 ADDITIONAL FACTORS Qi g See next a e for continuation of Event Descri tion and Cause 7
89
~19 Descri tion.
7 89 80 80 NAMEI PHONE:
OPO sat Sev
'eportable Occur ence 251-76-1 Licensees Event Report Pagg. Two Event Descri tion (continued) operable.
This is the first Reportable Occurrence related to a non-conservative overtemperature delta-T setpoint.
Two capacitors in a signal summator were found to be open and were replaced with new capacitors.
The overtemperature delta-T setpoint was then satisfactorily retested.
(251-76-1).
Cause Descri tion (continued) delta-T with the overtemperature delta-T setpoint.
This caused the setpoint to be raised above the required value.
I