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Take 5 for Safety

Building 801 Release of 25-day Sr -82 Collider-Accelerator Department 4-23-2013. Take 5 for Safety. Sr -82 Release Discovered on Filter. Outdoor Filter Bank. Target Processing Lab. April 18, 2013, 4:30 PM – surface of filter housing 1 R/h at 1 foot

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Take 5 for Safety

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  1. Building 801 Release of 25-day Sr-82 Collider-Accelerator Department 4-23-2013 Take 5 for Safety

  2. Sr-82 Release Discovered on Filter Outdoor Filter Bank Target Processing Lab • April 18, 2013, 4:30 PM – surface of filter housing 1 R/h at 1 foot • Filter at exhaust stack indicated no release to environment • Lead blankets on the fence near the filter housing added to reduce the dose and allow shrinkage of the posted areas • About 2 Ci of Sr-82, 100 mg, $200,000 value on filter bank

  3. Possible Direct Causes Hot Box 6 Clam Shell

  4. Configuration Management of Process: Consider adding radiation detection/alarms at filter bank and/or on ventilation piping Consider adding shielding to the outdoor filter bank Consider calibrating the hot plates or going back to digital and use procedure Consider making radiation measurements of the target material during each step of the processing Consider improving acid scrubber trunk hosing and enclosure over product Consider thoughtful review all changes to processing (e.g., Arronax product batching, hot plate changes) Consider controlled ventilation system drawings that indicate flow rate in each hot box including flow rate through scrubber Consider assigning QA level to Sr-82 process based on value of product Configuration Management of Targets: Consider heat transfer calculations for all targets Consider controlled drawings of all targets and any added BNL collars Consider estimating radioactivity yield using documented calculations Consider thoughtful review of all new or modified targets Considerations to Date

  5. I know, I saw it right away too....No safety glasses or hearing protection!!!

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