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 Start dateReporting criterionTitleEvent descriptionSystemLER
ENS 4714022 July 2011 05:00:00Agreement StateAgreement State Report - Fixed Gauge Shutter FailureThe following information was received by e-mail: On August 8, 2011 the licensee's radiation safety officer called to advise the Agency (Illinois Emergency Management Agency) of a gauge shutter failure. During the performance of routine operability checks and area surveys on July 22, 2011 it was found that the shutter lever on a Kay- Ray/Sensall 7062P could not be completely closed. The gauge is permanently mounted to a 12 inch pipeline in a remote area of the refinery. The line runs overhead at a height of approximately 10 to 12 feet. Arrangements were made to have personnel with duties in the area to be notified of the shutter failure and to prohibit any work in the immediate area. The nearest work station was determined to be over 200 feet away. Radiation levels at one foot from the gauge were measured at less than 1 milliR/h. After contacting the manufacturer on August 8 to determine the best course of action, the licensee applied a lubricant to the shutter area. Subsequently, after waiting a day, attempts to close the shutter were successful. The shutter is now operating as expected. Arrangements have been made to have a service licensee visit the site to ensure operation is as expected. As the failure was noted during performance of routine tests designed to detect such failures, no changes to the licensee's procedures or protocols are anticipated. The licensee was reminded of the importance of promptly reporting such events in the future. The sealed source gauge is a Kay-Ray/Sensall model 7700-Y containing 0.14 Ci of CS-137. The fixed gauge is a Kay-Ray/Sensall, Model number 7063P; Serial number S96G1816. Illinois Event Number IL11105
ENS 4775921 March 2012 05:00:00Agreement StateAgreement State - Process Gauge Shutter Stuck in Open PositionThe State of Illinois reported the following information via email: The Wood River Refinery reported that a shutter mechanism on a fixed gauge (Ohmart Model SH-F1B, S.N. 2508CN) was found stuck in the open position during a routine survey and maintenance check. The gauge contained a 3.7 GBq (100 mCi) Cs-137 source. Staff were unable to return it to the shielded position. The gauge is in an unoccupied area. The device/area has been posted. Surveys indicate normal radiation levels in the vicinity of the device compared to the SSD registry. There is product in the vessel and 2 other gauges are in the vicinity. Personnel and shift managers have been informed of the situation. A service vendor has been on scene and so far has been unable to close the shutter after lubrication. Additional service measures are being pursed by the vendor. IL Item No. IL12005
ENS 4777926 March 2012 05:00:00Agreement StateIllinois Agreement State Report - Shutter Mechanism FailureThe following information was obtained from the State of Illinois via email: The Radiation Safety Office for the licensee reported a second device at their facility had a shutter mechanism failure. The shutter was found stuck in the open position on March 26, 2012 during continuation of their routine maintenance check and survey. The gauge is near the top floor of a coker drum away from any routinely occupied work station. The device/area has been posted with appropriate warning notices. Measured radiation levels appear normal for this type of device with the shutter open. There are two other gauges on this vessel which are operating normally. Operators in the area have been informed of the situation and vessel access is prohibited. The area is subject to high humidity and rust build up is the suspected cause of the shutter failure. In the past, the manufacturer has recommended covers for these devices but none are available. The licensee's consultant and the vendor have been called. Both will be on-site again on March 30, 2012 as previously arranged to service a similar other device that failed last week. They will investigate this recent failure at that time. The gauge is an Ohmart Corp. model number SHLG-2, serial number 2605CN and contains a 5 Ci Cs-137 source. The previous failure was reported under NRC EN# 47759. Illinois Item Number: IL12006