05000255/LER-1982-047-03, /03L-0:on 821126,routine Sample of Safety Injection Tank T-82D Showed Boron Concentration Below 1,720 Ppm.Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Check Valve.Leak Rate Monitored

/03L-0:on 821126,routine Sample of Safety Injection Tank T-82D Showed Boron Concentration Below 1,720 Ppm.Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Check Valve.Leak Rate Monitored

ML20028C138
Person / Time
Site:	Palisades
Issue date:	12/21/1982
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028C130	List: 05000255/LER-1982-047, Forwards LER 82-047/03L-0 05000255/LER-1982-047-03, /03L-0:on 821126,routine Sample of Safety Injection Tank T-82D Showed Boron Concentration Below 1,720 Ppm.Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Check Valve.Leak Rate Monitored
References
LER-82-047-03L, LER-82-47-3L, NUDOCS 8301070103
Download: ML20028C138 (2)

LER-1982-047, /03L-0:on 821126,routine Sample of Safety Injection Tank T-82D Showed Boron Concentration Below 1,720 Ppm.Caused by Minor Leakage Past Loop Check Valve & Safety Injection Tank Check Valve.Leak Rate Monitored

Event date:
Report date:
2551982047R03 - NRC Website

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Attachment to Licensee Event Report 82-47 Consumers Power Company Palisades Plant Docket 50-255 At 2213 on November 26, 1982, a routine sample of T-82D (D Safety Injection Tank) showed boron concentration to be 1700 ppm.

Since the boron concentration was less than the 1720 ppm Technical Specification limit, T-82D was declared inoperable. The tank was subsequently drained and refilled from the Safety Injection Refueling Water (SIRW) tank to restore the boron concentration.

Boron concentration was restored at 2303 The decrease in T-82D boron concentration has been attributed to minor PCS leakage (within Technical Specification limits) into the tank. This leakage is past loop check valve 3146 and either the tank check valve 3147 or the fill and drain valve CV-3003 Inspection and repair of check valve 31h6 is currently scheduled for the next refueling outage. Additional monitoring vill be performed to determine which other valves are leaking and necessary repairs will also be made during the next refueling outage.