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Historic waste

机译：历史性的浪费

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Barnhart became a part of the cleanup of the Washington Closure Hanford site when it was contracted to remove, transport and dispose of an experimental plutonium reactor (309 Reactor) and a highly contaminated vault (340 Vault) in Area 300 of the Hanford site. The units were taken to an engineered land fill known as the Environmental Restoration Disposal Facility (ERDF), located about 30 miles from Area 300. Engineering began in January 2012 and the final piece was set at the ERDF in February 2014. Both the reactor and the vault were located below grade, meaning they would have to be lifted to the surface. The highly radioactive reactor had to be removed concurrently with its 5-foot thick shielding structure as one large monolith. Special lifting and transportation securement devices had to be designed, fabricated and tested. The 1,000 ton loads then were transported to the ERDF. The 309 Reactor could not be disassembled due the high radiation levels, and because it was constructed in place, there were no means to attach rigging. The bio-shield was not connected to the reactor and the lifting method had to include a means of lifting both the shield wall and reactor simultaneously. The weight of both exceeded 2 million pounds. The dimensions were 28 feet in diameter and 21 feet tall.
机译：当Barnhart被签约清除，运输和处置Hanford厂区300区的实验p反应堆（309 Reactor）和高度污染的穹顶（340 Vault）时，它成为Washington Closure Hanford厂区清理工作的一部分。这些装置被送往距离300区约30英里的工程填埋场，即所谓的环境恢复处置设施（ERDF）。工程于2012年1月开始，最后一块设于2014年2月在ERDF。保险库位于坡度以下，这意味着必须将其提升到地面。高放射性反应堆必须连同其5英尺厚的屏蔽结构一起作为一个整体式拆除。必须设计，制造和测试特殊的起重和运输固定装置。然后将1,000吨的货物运输到ERDF。 309反应堆由于高辐射水平而无法拆卸，而且由于它是就地建造的，因此没有附加索具的方法。生物防护罩未连接到反应器，提升方法必须包括同时提升防护壁和反应器的装置。两者的重量均超过200万磅。尺寸为直径28英尺，高21英尺。

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    《American cranes & transport》 |2015年第5期|50-50|共1页
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