ML20003B664

Nonroutine Environ Operating Rept 335-B-80-03:on 801202, Ocean Intake Area Recording Thermograph Sys Was Reported Missing.Probably Caused by Storm Surge Wave Action or Commercial Fishing.Sys Was Replaced on 801210

ML20003B664
Person / Time
Site:	Saint Lucie
Issue date:	12/19/1980
From:	Robert E. Uhrig FLORIDA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
L-80-415, RO-335-3-80-03, RO-335-3-80-3, NUDOCS 8102250124
Download: ML20003B664 (3)

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f-07 FLCRIDA power & LIGHT COMPANY

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December 19, 1980 L 415 Mr. James P. O'Reilly, Director, Region II .

Office of Inspection and Enforcement 0

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U.S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

Re: St. Lucie Plant Unit 1 Dccket No. 50-335 Reportable Occurrence No. 335-B-80-03 Dare of Occurrence: Decenber 2, 1980 The attached Non-Routine Environmental Operating Report is being submitted in accordance with Environmental Technical Specification 5.6.2.a.2 to provide 30-day notification of the subject occurrence.

Very truly yours, Robert E. Uhrig Vice President Advanced Systems & Technolgoy REU/ATH/ku i Attachment 1

i cc: Mr. Victor Stello, Director Office of Inspection & Enforcement Harold F. Reis, Esquire C003

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4 FLORIDA POWER & LIGHT COMPANY ST. LUCIE UNIT NO. 1 REPORTABLE OCCURRENCE NO. 335-B-80-3

Title:

St. Lucie Plant Unit #1, Ocean Intake Area, Racording Thermograph Loss A. Descriotion, Analvsis and Evaluation The loss of the St. Lucie Plant Unit #1 Ocean Intake Area recording daermograph system was reported to ENV on December 2, 1980 by site personnel after an attempt to perform routine servicing. No debris or trace of the system was subsequently discovered. APPENDIX B TO OPERATING LICENSE NO. DPR-67, E'IVIRONMENTAL TECHNICAL SPECIFICATIONS FOR FLORIDA POWER AND LIGHT COMPANY ST. LUCIE UNIT NO. 1, DOCKET NO. 50-335, Section 3.1.A.5, requires continuous thermograph monitoring to verify compliance with the maxi-cum surface temperature rise of 5.5 F over ambient tempera-ture, within the zone of mixing. Because of the loss of Intake area thermographs, this measurement is not possible and therefore is reportable under Section-5.6.2.a.2.

B. Cause of Cccurrence The thermograph sys tem loss was most probably due to storm surge wave action or commercial fishing. Both activities increase markedly in mid-November of each year. A divar's inspection and search failed to discover any part of the system or accessories. Until the missing sys tem or sufficient parts can be recovered, an exact statement of the cause of this occurrence cannot be made.

C. Corrective Action The intake array, associated accessories, mooring system and

. recording thermographs were replaced at 1300 hrs. on December 10, 1980.

All reportable task groups have been directed to ensure that suf ficient replacement systems and components are held on hand to replace the loss of any single array, on an immediate basis.

Florida Power and Light continues to maintain reasonabje pre-cautions to prevent loss of ocean temperature monitori.ag equipment. The inshore navigation of vessels, commercial /

sport fishing activity, and winter storm surce, subject these thermograph arrays to high susceptability for damage or loss.

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- a o-Deletion of the St. Lucie Plant ocean thermal monitoring program was requested on April 12, 1979. When granted, this deletion will preclude the aforementioned problems.

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