ML20023C409

RO 389-83-005:on 830507,safety Injection Tank Isolation Valves Closed W/Plant in Mode 4 Above 276 Psia.Caused by Personnel Error.Procedural Step Overlooked During Plant Heatup.Valves Immediately Opened

ML20023C409
Person / Time
Site:	Saint Lucie
Issue date:	05/09/1983
From:	Wethy C FLORIDA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
1942, RO-389-83-005, RO-389-83-5, NUDOCS 8305170310
Download: ML20023C409 (1)

Text

P. O. BOX 128, FT. PIERCE FL 33450 CMW-PSL Ltr. Bk. #1942 \\tl/f Copies to: CMW, JHB, D/55, NGR, RRJ Offsite: JJW, KNH, HNP, PLP, REU FLORioA POWER & LIGHT COMPANY May 9, 1983 To: Mr. J. P. O'Reilly, Director, Region II Office of Inspection and Enforcement g

U. S. Nuclear Regulatory Commission Atlanta, Georgia 30303 3,__

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From: Mr. C. M. Wethy, Plant Manager p St. Lucie Plant NPF-16 g a]E m

Florida Power & Light Company .. 93 Miami, Florida 7,

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SUBJECT:

MEMO FOR FACSIMILE TRANSMISSION TO CONFIRM PROMPT REPORTABLE OCCURRENCE 389-83-005 ISOLATED SAFETY INJECTION TANKS This memo confirms the telephone call at 9:47 P.M. on 5/7/83 with the NRC Duty Call Supervisor.

At about 9:15 P.M. on 5/7/83, it was noted that the SIT isolation valves were closed with the plant in Mode 4 above 276 psia which is not in compliance with TS 3.5.1.a. The valves were immediately opened.

The condition had existed for 4.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />. The apparent cause is personnel error in that a procedural step had been overlooked during plant heatup for post core load hot functional testing. The plant was at about 260 F and 400 psia. It should be noted that the plant has not been critical and thus has no decay heat and that these valves open automatically at 515 psia.

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C. M. Methy Plant Manager St. Lucie Plant CMW/RRJ:esr

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