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RADIOACTIVE WASTE MINIMIZATION AT A LARGE ACADEMIC MEDICAL FACILITY

机译：大型学术医疗设施的放射性废物最小化

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The University of Texas Medical Branch (UTMB) at Galveston is a large academic medical center. It houses about 12,700 employees, of which 200 are permitted radioactive materials users encompassing 350 laboratories. Consequently, UTMB generates a large amount of radioactive waste. The majority of this waste contains short- lived isotopes, such as P-32, P- 33, and S-35, which is held for decay and then disposed at a sanitary landfill. However, some waste, including long- lived waste and stock vials, is packaged in drums, compacted, and stored in a warehouse facility on-site, perpetually awaiting disposal at a contract facility. Space in the warehouse is at a premium and shrinking, but these drums cannot currently be disposed due to the prohibitive cost involved. The continued pressure on university hospital budgets prompted this review of the waste program. Recent reevaluation of the waste stream has resulted in shifting most of the material that was being drummed for disposal to landfill and incineration. Furthermore, materials that were previously assumed to be radioactive are now being evaluated prior to disposal to determine if they may be disposed of as non-radioactive waste. In one waste stream which was evaluated, long lived dry solid (gloves, paper, plastic, etc.), the amount of waste being drummed was decreased by 75% in the pilot program, which represents about 15% of the waste collected by UTMB’s Environmental Protection and Management (EPM) group. Additionally, materials such as radioactive labels and decayed stock vials were removed from the drum waste stream and either sent to the land fill or incinerated. Separation of the waste was handled by EPM technicians since the technicians must correlate the tracking numbers on the vials with the numbers on the disposal forms turned in with the waste. The space that was saved due to the decrease in drumming for disposal is now used to hold the increased volume of landfilldisposable material. The monetary savings due to the drastic reduction in drum production is calculated to be about $45,000/yr. This program is currently being expanded to reduce other waste streams at the university.
机译：德克萨斯州大学医疗分支（UTMB）在加尔维斯顿是一个大型学术医疗中心。它拥有约12,700名员工，其中允许200名允许的放射性材料，包括350名实验室。因此，UTMB产生大量放射性废物。这些废物的大部分含有短寿命的同位素，例如P-32，P-33和S-35，其被保持用于腐烂，然后在卫生填埋场处置。然而，一些浪费包括长寿的废物和储蓄小瓶，包括在滚筒，压实和储存在现场仓库设施中，永久等待在合同设施处置。仓库中的空间处于溢价并缩小，但由于涉及禁止的成本，目前不能处理这些鼓。关于大学医院预算的持续压力促使对废物计划进行了评论。最近对废物流的重新评估导致大部分钻入垃圾填埋场和焚烧的大部分材料。此外，现在在处理之前评估先前假定的材料以确定它们是否可以作为非放射性废物处理。在一次评估的废物流中，长寿命干燥固体（手套，纸张，塑料等），试点计划中搅拌的废物量减少了75％，这占UTMB收集的废物的约15％环境保护与管理（EPM）组。另外，从滚筒废物流中除去诸如放射性标签和腐烂的牲畜籽粒等材料，并送到陆地填充或焚烧。废物的分离由EPM技术人员处理，因为技术人员必须将瓶子上的跟踪号与垃圾交替相关的数量相关联。由于Dismost的减少而节省的空间现在用于占据覆盖物质的增加的体积。由于鼓励的急剧减少，货币节约计算为约45,000美元/年。该计划目前正在扩大，以减少大学的其他废物流。

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