Criteria For Safe Storage

Procedures and safeguards vhlch have proven successful In preventing the attainment of critical masses vlth enriched fuel in the older Hanford reactors have been based on the following criteria. 

1) Xhe handling shipping and storage of unlrradiated enriched uranium shall be such that both an error or accident in the 3 sical arrangement or mass of fuel 8 water inundation is required to achieve a critical mass. 

3) In cases where control over configuration or shape is not possible, the allowed mass or volume of enriched uraniim will be 2/3 of the value for the uranlum-to-water volume ratio which yields the minimum critleai nmaa or volume and will be calculated for the optimum shape (sphere  

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The novel features of the Hope plant are continuous dissolving relaxed, yet safe, criticality criteria sampling only for process control a realistic approach to waste storage and a new operating-maintenance philosophy. 

Hazardous liquids must be stored safely away firom process and public areas and in such a manner that leaks or spills can be contained. Good separation criteria can be incorporated into the layout of a processing facility but are not easy to implement for a laboratory or packaging operation that handles a variety of hazardous liquids. The operator must then balance hazardous liquid accessibility against e[Pg.35]

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