ML19259C024

LER 79-020/03L-0 on 790503:solution Temp in Standby Liquid Control Sys Found to Be 2 F Less than Tech Spec Requirement for Existing Boron Concentration.Caused by Incorrect Acceptable Temp Controller Setpoint Range

ML19259C024
Person / Time
Site:	Peach Bottom
Issue date:	06/01/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-020-03L, LER-79-20-3L, NUDOCS 7906080290
Download: ML19259C024 (1)

Text

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F This L.E.R. refers to Standby Liquid Control System temperature, c,3'_

O M.,y which was found to be 20 7 less than required. The governing Technical

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-l_At i power, the temperature of the solution in the Standby Licuid Control i_ System (SBIAS) was found to be 780 7. 2 7 less than the Tech Spec i p' i requirement of 300F for the existing boron concentration. The safety

. . . . ' .t.s_i_gnificance was minimal since the soluti__on saa above the saturation r-] 1 '

temperature for the existing boron concentration and the boron concent-

{.T 7 i ration was greater than required to perform the system function.

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n as au c:nes: vt acMss Q) l The acceptable temperature controller setpoint range, as specified 5v r- G i procedure, was incorrect. The temperature controller setpoint was r r- increased and SELCS temperature was in s;sc within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. Appropriate s..T. . J r_pr_ocedures will be revised to ensure Tech Spec requirements are met.

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