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 Start dateReporting criterionTitleEvent descriptionSystemLER
ENS 4640619 October 2010 05:00:00Agreement StateAgreement State Report - Fixed Gauge Shutter Not Operating ProperlyThe following information was reported via email by the State of Ohio: A licensed service provider (AHP) visited the licensee's site on 10/19/10 and completed an inspection of six fixed level gauges with the following results: a) Four device shutters functioned as designed and were secured closed for maintenance activities. b) One shutter device was inoperable due to the fact that the shutter positioning pin was rusted and could not be removed. Through lubricating and gentle mechanical persuasion the pin was removed and the shutter cycled properly. c) The last device had a shutter operating handle that turned freely but did not rotate the shield block into the beam path. This device obviously did not function as designed and meets the reporting criteria. Through the use of more aggressive measures that did not include disassembly the shutter was eventually closed. These activities were closely monitored by the service provider's representative and at no time were licensee personnel exposed to the direct beam. The shutter on this device is now seized in the closed position. Upon identification of the shutter hanging up the service provider contacted the Bureau by telephone and e-mail. All six devices remain bolted in their fixed positions. The licensee intends to have the service provider unbolt and transfer all six devices to a secure storage location on licensee property where they will be properly packaged for transfer for disposal. The 2 sealed sources are both 50 milliCuries of Cs-137. The manufacturer of the fixed gauge is General Nucleonics, Model # 13250, serial # 114 & 116. Ohio Item Number: OH100027