05000266/LER-1980-012-03, /03L-0:on 801005,logs Showed Decrease in Holdup Tank Pressure During 801002-05.Evaluation Showed Leak on Compression Fitting on Inlet to Valve IPCV-1022C.Caused by Improper Reinstallation of Valve After Cleaning

/03L-0:on 801005,logs Showed Decrease in Holdup Tank Pressure During 801002-05.Evaluation Showed Leak on Compression Fitting on Inlet to Valve IPCV-1022C.Caused by Improper Reinstallation of Valve After Cleaning

ML19339B953
Person / Time
Site:	Point Beach
Issue date:	10/31/1980
From:	Fay C WISCONSIN ELECTRIC POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19339B950	List: 05000266/LER-1980-012, Forwards LER 80-012/03L-0 05000266/LER-1980-012-03, /03L-0:on 801005,logs Showed Decrease in Holdup Tank Pressure During 801002-05.Evaluation Showed Leak on Compression Fitting on Inlet to Valve IPCV-1022C.Caused by Improper Reinstallation of Valve After Cleaning
References
LER-80-012-03L, LER-80-12-3L, NUDOCS 8011100487
Download: ML19339B953 (2)

LER-1980-012, /03L-0:on 801005,logs Showed Decrease in Holdup Tank Pressure During 801002-05.Evaluation Showed Leak on Compression Fitting on Inlet to Valve IPCV-1022C.Caused by Improper Reinstallation of Valve After Cleaning

Event date:
Report date:
2661980012R03 - NRC Website

text

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U. S. NUCLEA2 REGULATORY COMMISSION (7771 LICENSEE EVENT REPORT CONTROL BLOCK: l l

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61 DOCKET NUM8ER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h fiiT 1 I on 10-5-80 the Shift Supervisor noted the auxiliary building logs showedi ITTil I a decrease in holdup tank pressure during the period of 10-2 to 10-5-80.l I O 14 l l Evaluation showed the leak to be on a compression fitting on the inlet l lo isi i to valve IPCV-1022C.

The vent stack monitor R14 had noted no increase l l O ls l l in airborne activity during the period.

This event is reportable in l

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42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS g; I The cause of the incident was attributta to improper reinstallation of l

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g lapproximately 1945 hours0.0225 days <br />0.54 hours <br />0.00322 weeks <br />7.400725e-4 months <br /> on 10-5-80.

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f ATTACHMENT TO LICENSEE EVENT REPORT 80-012/03L-0 Wisconsin Electric Power Company Point Beach Nuclear Plant Unit 1 Docket No.50-26G During a normal Duty Shif t Supervisor review of logs on October 5, 1980, it was observed that the primary auxiliary v-building log showed a 0.9 psig decrease in waste holdup ta pressure during the period October 2 to 5, 1980.

Evaluatio..

showed the leak to be on a compression fitting on the inlet to valve 1PCV-1022C (pressure control valve on the line from the reactor coolant drain tank to the gas analyzer).

The fitting was properly reinstalled at approximately 1945 hours0.0225 days <br />0.54 hours <br />0.00322 weeks <br />7.400725e-4 months <br /> on Octoler 5, 1980.

No trend on the vent stack monitor R14 had been observed, no alarms had been generated, nor had strip chart recorders identified the leak.

Subsequent calculations by Chemistry showed the average release rate to be 1.995E-07 Ci/second or.0001% of the 0.2 Ci/second Technical Specification limit.

The total activity released was calculated to be 0.056 Curies based on Xe-133 equivalent.

The cause of the incident, although not specifically determined, was probably attributable to improper reinstallation of the pressure control valve following cleaning.

The Radiochemical Technician responsible for the incident has received individual counseling and all other Radiochemical Technicians have been informed of the incident and have been admonished to pay close attention to the propar method of reinstalling pressure control valves to avoid recurrence of this incident.

This event is reportable in accordance with Technical Specification 15.6.9.2.B.4.

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