ML17266A156

RO 335-B-79-05/B:on 791210,during Routine Checks of Recording Thermographs,Ocean Discharge Area Recording Thermograph Flotation Buoy Assembly Found Missing.Caused by Cable Failure from Rough Weather or Vandalism

ML17266A156
Person / Time
Site:	Saint Lucie
Issue date:	01/08/1980
From:	Robert E. Uhrig FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17208A349	List: ML17208A348 ML17266A156
References
NUDOCS 8003260636
Download: ML17266A156 (2)

Text

FLORIDA, POMER' LIGHT COMPANY'T.

LUCIE NO, 1 REPORTABLE OCCURRFNCE NO. 335-3-79" 05 Ocean Discharge Area - Recording Thermographs 'itle:

A. Descri tion Anal sis & Evaluation On Decem'oer 10, 1979 during routine .checks of the St. Lucie Temperature Recording Thermographs,~

Florida Power & Light Company's contractor fo biological monitoring and evaluation services found that the St. Lucie Ocean Discharge Area Recording Thermograph flotation buoy assembly was miss ing.

,Subsequent inspection of the anchoring system by divers revealed that the concrete anchor was in place, but the array-to'-anchor cable, the array, and the thermographs were also missing, As of this report none of the missing apparatus has..

been recovered.

Section 3.1..A.5 of the Environmental Technical Specifications (ETS) for St. Lucie Unit No. 1 requires that the maximum temperature rise in the zone of mixing be measured using recording thermo-:

graphs. Because of the loss of the discharge area thermographs, this measurement 'is not possible S008260

and therefore is reportable under ETS 5.6.2.a.2.

B, Cause of Occurrence Inspection of the concrete anchoring system and associated hardware indicated ithat the stainless steel cable holding the array to the anchor was

. disconnected due to cable failure eithex from rough weather conditions or vandalism. The exact r'eason cannot be determined without inspection of the missing cable.

C, Corrective Action The discharge array and associated hardware were replaced on December 14, 1979. The recording thermographs were replaced on December 20, 1979.

Replacement materials are kept on hand for occurrences

'of this type.

Florida Power 6 Light has taken reasonable pre-cautions to prevent loss of the temperature monitor-ing equipment. However, their location in the open ocean near commercial fishing and recreational boating lanes makes them highly susceptible to damage and/or loss.

Deletion of the St. Lucie ocean thermal monitoring pxogram was requested on April 12, 1979. When granted, the delete.on will alleviate the continual problems experienced with vandalism as wel1 as natural damage which occurs in the hostile ocean environment.