05000254/LER-1984-018, :on 840922 & 24,reactor Bldg Fuel Pool Channel B Area Radiation Monitor 1705-16B Spiked High, Tripping Ventilation.Cause Unknown.Corrective Actions for Both Events Will Be Documented in Suppl to LER 84-018

:on 840922 & 24,reactor Bldg Fuel Pool Channel B Area Radiation Monitor 1705-16B Spiked High, Tripping Ventilation.Cause Unknown.Corrective Actions for Both Events Will Be Documented in Suppl to LER 84-018

ML20106C010
Person / Time
Site:	Quad Cities
Issue date:	10/11/1984
From:	COMMONWEALTH EDISON CO.
To:
References
LER-84-018-03, LER-84-18-3, NUDOCS 8410230624
Download: ML20106C010 (1)

LER-2084-018, on 840922 & 24,reactor Bldg Fuel Pool Channel B Area Radiation Monitor 1705-16B Spiked High, Tripping Ventilation.Cause Unknown.Corrective Actions for Both Events Will Be Documented in Suppl to LER 84-018

Event date:
Report date:
2542084018R00 - NRC Website

text

seRC Per. Me U.S. feUCLEAR REGULATORY _ _ l H38 APPROVE 3 Oase leo. 3t30-0104 LICENSEE EVENT REPORT (LER)

PAC 8LITY 184AA8 til DOCKET efueMER (2) PAGE m Quad-Citles Nuclear Power Station o 15 l o Io l 0 l2 l 1;l 4 1l0Flol1 TITL4 les Standby Gas Treatment System Auto-Start GVENT DATS (Si LER NURAMR (6) REPORT DATE 17) OTMER FActLITl88 lefv0LVGO 88) 680 NTH OAV YEAR VEAR  :.

seo pqat MONTH DAY YEAR PACIUTV Names DOCKET NueASERIS) q e NA og5;ogogog , ;

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30.4084el(IHull 90.73teH2H4 M.73deH2HvillHAl JesAt 30.4884e:f1Hivl M.734eH2Hal 30.734eH2HviuHS) 30.40BleH1Het 30.734e (2HHH 90.734el(2)tal LICE 8stEE CONTACT FOR THIS LER liti NAME TELEPHONE NUMBER AREA COOE Gary F. Spedi, Technical Staff Supervisor 31019 6151 41 -12 12 1411 CJeAPLETE ONE LINE FOR EACM COMPONENT FAILURE DESCRISED IN THIS REPOftT (tai

A ' "" "I A COUSE SYSTEM COMPONINT TO PR CAUSE Sv8 TEM COMPONENT

• TU l I I I I I I I I i l l l l W l l I I I I I I I I I I I l _ M SUPPLEMENTAL REPORT EXPECTED 1148 nsONTM DAY l YBAR T} rES u,P ) no wm axrecrea sumssion cares AS. TRACT a , .e rsoo 1 l0 2l2 8l4

a. .--P wi.e. .we e er,.-, e., nel

.On September 24, 1984, at 10:30 a.m., both Unit 1 and Unit 2 were at approxi-mately 99% core thermal power. The Reactor Building Fuel Pool Channel B Area Radiation Monitor (IL), 1705-16B, spiked high tripping the Reactor Building Venti-lation (VA) and auto-starting the Standby Gas Treatment System (BN). The B Channel monitor had returned to normal when checked and no abnormal radiation levels were found on the Refuel Floor during the survey conducted by Radiation Protection Department.. The Reactor Building Ventilation System was returned to normal and Standby Gas Treatment System was secured.

This revision 00 of Licensee Event Report 84-18 was initiated to document the undesirable event described for the Station's records. Since an identical event had happened on September 22, 1984, no separate evaluation was deemed necessary for the September 24 occurrence. All evaluations and necessary corrective actions for both September 22 and hptember 24 events will be documented in a supplemental report to L.E.R. 84-18.

he 8410230624 841011 DR ADOCK 05000

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