ML18144A722

LER 1976-011-00 for St. Lucie Unit 1, Steam Driven Auxiliary Feedwater Pump

ML18144A722
Person / Time
Site:	Saint Lucie
Issue date:	05/07/1976
From:	Schmidt A Florida Power & Light Co
To:	Moseley N NRC/IE, NRC/RGN-II
References
PRN-LI-76-111 LER 1976-011-00
Download: ML18144A722 (3)

Text

" 0, BOX 013100, MIAMI, FLORIDA 33101

'Sp FLORIDA POWER & LIGHT COMPANY May 7, 1976 PRN-LI-76-111 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 335-76-11 ST. LUCIE UNIT 1 DATE OF OCCURRENCE: APRIL 8,, 1976 STEAM DRIVEN AUXILIARY FEEDWATER PUMP 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, D. chmidt Vice President Power Resources MAS/cpc Attachment cc: Jack R. Newman, Esquire Director, Office of Inspection and Enforcement (30)

Director, Office of Management Information and Program Control (3)

HELPING BUILD FLORIDA

LlCENSEE EVENT REPORT a~ CONTROL BLOCK: [P ASE PRINT ALL REQUIREO INFORMATION}

UCENSEE UCENSE EVENT NAME LICENSE NUMBER TYPE TYPE F L S L S 1 0 0 0 0 0 0 0 0 0 4 1 1 1 1 ~03 89

~

7 14 15 25 26 30 31 32 REPORT REPORT

, CATEGORY TYPE SOURCE OOCKET NUMBER EVENT OATE REPORT OATE

[oD1)CONT L ~L 0 5 0 0 3 3 5 0 4 0 8 7 6 0 5 0 7 7 6 7 8 57 58 59 60 61

• 68 69 74 75 80 I

EVENT OESCRIPTION

[oa~] Durin reo erational testing, the steam driven auxiliary feedwater pump 7 8 9 7 89 tri ed on overs eed. Subse uent attem ts to electrically cycle governo 80 80 4 re unsuccessful and the valve was manuall closed. A 7 8 9 80

[Q manufacturer's re resentative was notified and, after investigation, the 7 8 9 80

~o 6 roblem was corrected. The feedwater pump was then returned to service.

7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT COOE COOE COMPONENT COOE SUPPUER MANUFACTURER

[OO7] ~HH ~E V A L V 0 F ~A W 2 9 0 N 7 8 9 10 11 12 17 43 44 47 CAUSE OESCRIPTION The a arent cause of the overs eed tri was faulty speed control by the 7 8 9 80 Qg overnor. Xt was found that the governor valve actuator would not 7 8 9 80

~1 0 res ond to voltage signals from the controller because of an open 7 89 FACIUTY 80 METHOO OF STATUS POWER OTHER STATUS 06COVERY OISCOVERY OESCRIPTION

~H ~OO O N/A N/A 7 8 9 10 12 13 44 45 46 80 FORM OF ACTIVITY CONTENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Q~g z z N/A N/A 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION

~4~00 7 8 9 o z N/A 11 12 13 80 PERSONNEL INJURIES OESCRIPTION

~4 0 0 0 N/A 7 8 9 11 12 80 PRPBABLE CONSEQUENCES Qs] N A 7 8 9 80 LOSS OR OAMAGE To FACILITY TYPE OESCRIPTION EK L~l N/A 7 89 10 80 PUBLICITY N/A 7 8 9 ~ 80 AOOITIONAL FACTORS'ee Pa e Two for continuation of Event and Cause descriptions.

7 8 9 80 7 89 80 NAME M. A. Scho man PHONE 305 552-3779 GPO SSt o SHIIT

~ ~

REPORTABLE OCCURRENCE 335-76-11 LICENSEE EVENT REPORT PAGE TWO EVENT DESCRIPTION (continued)

This was the first occurrence of this type. (335-76-11).

CAUSE DESCRIPTION (continued) circuit in a solder joint in the external amphenol plug that mates to the actuator. It was also found that the ramp generator signal convertor gain could not, be set properly. The spare ramp signal convertor was calibrated, installed, and satisfactorily tested.

The original ramp signal convertor was returned to the manufacturer for repair.