View source for 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

{{Adams
| number = ML20106C010
| issue date = 10/11/1984
| title = :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
| author name = 
| author affiliation = COMMONWEALTH EDISON CO.
| addressee name = 
| addressee affiliation = 
| docket = 05000254
| license number = 
| contact person = 
| document report number = LER-84-018-03, LER-84-18-3, NUDOCS 8410230624
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = :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
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000254
| LER year = 2084
| LER number = 18
| LER revision = 
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

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