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[en] The problem of removing after-heat from fuel stored in the MSRE drain tanks is considered. It is shown that a system capable of removing 100 kw is considered adequate for 80 hr after the reactor is shut down. A cooling system of 50 kw capability is adequate for 80-500 hr. Several alternative cooling schemes are considered. A system using concentric thimbles projecting into the mass of salt, with boiling water in the inner thimble, is recommended on the basis of relative simplicity. Methods of calculating the heat transfer performance of such a system are presented. It is shown that the emissivity of the oxidized metal surfaces is the most serious uncertainty in the calculated cooling performance.