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This bibliography provides a ready listing of reactor digital computer codes presently available or in preparation, and is arranged in such a manner as to enable the engineer or physicist to determine which codes will be of assistance to him in his work.

This document presents a general analysis of charge-discharge during pile operation. It is not a detailed technical, operational, economic, or political analysis but, rather an attempt to cover the subject with a broader viewpoint than is usually prsented in the many detailed reports which have been written in the past five years. This letter is occasioned at this time because efforts are in progress to implement plans for proceeding with the expenditure of substantial amounts of money in order to demonstrate that the system, as developed, will allow the attainment of certain desirable objectives.

Calculations are presented for the estimated minimum critical mass of Pu that would be allowed in Hood No. 5 and the filter boat cleaning and testing hood of the Plutonium Finishing Plant. Hood No. 5 contains the overflow tank and two vacuum traps. Limits are given for several pile exposure rates. These limits do not allow the approach of personnel into Hood No. 5 when these vessels are full.

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The Isolation Process, contained in the 231 Building, has an operational cost of approximately $35,000 per month. The location of this process in the 224-T Building would result in lower manpower requirements and effect an estimated savings of $5,000 per month. This report details study made to determine the feasibility and approximate cost for installing this process in 224-T.

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Process flow diagrams, process-equipment descriptions, and a preliminary economic evaluation of the Fluorox Process are presented. (See also CF-55-5-176.). (C.W.H.)

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