ML19257D818

Supplemental LER 79-104/03L-1:on 791206,while Performing Flow Rate Test,Hpci Sys Isolated Due to High Suction Pressure Signal Which Tripped HPCI Turbine Stop Valve. Caused by Leakage of Diaphragm on 1E41-PSH-N031

ML19257D818
Person / Time
Site:	Brunswick
Issue date:	01/29/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19257D812	List: ML19257D811 ML19257D818
References
LER-79-104-03L, LER-79-104-3L, NUDOCS 8002060534
Download: ML19257D818 (1)

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I 8 f,0 61 DOCnET NUYbE R EVENT QESCRIPTION AND PROBAULE LO4 SEQUENCES h a 2 i While performing PT 9.5, HPCI 1000i! Flow Rate Test, the HPCI system isolated due to o 3 1 a high suction pressure signal from lE41-PSH-N031 which tripped the HPCI turbine l stop valve, j o a i l

o s I o c l a17 i o 8 i Technical Specifications 3.5.1, 6.9.1.9b I a.

CAUSE COY P. VA LV E SYSTE\1 CAUSE CODE CODE SUSCODE CCYPONENT CODE SUSC00E SUSCODE 7

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42 43 lB]0l6l9i 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o ] The diaphragm oa 1E41-PSH-N031 was found to be leaking, thus providing a false high i

[i g i ; j pressure signal. The diaphragm was replaced end returned to service satisfsetorily. [

, ,  ; This switch is checked on a quarterly basis per the calibration program. Thir is I considered an isolated event and no further action is required. i gl 1 4 1 80 7 8 9 STA S . POWER OTHER STATUS .

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