The GE Nucleonics Division Staff Department which now is called the Radiological Sciences Department was formerly known as the ``Health Instrument Divisions. A part of this department, presently known as the Biology Section, was formerly identified as the ``Biology Division.`` This project is concerned with a laboratory facility which is being built for the use of the Aquatic Biology Unit of the Biology Section. The Aquatic Biology group was established in 1945 to study the effect of the pile effluent on the Columbia River salmon industry. A hutment was erected to provide space for a laboratory, fish troughs, equipment, offices, and service. Thirteen outside ponds were built. Although minor improvements were subsequently added to the original facility, the expansion of the plant did not keep pace with the expansion in the operating program. This inadequacy gave rise to the project hereafter described.

Members of the Working Committees for RDA DC-4 and RDA DC-7 (KE and KW Reactors) have reviewed and approved the design basis being used for the preparation of the 200 Area portion of the Program X preliminary project proposal. This design basis includes the following: plant capacity of 275 tons per month, average flow rate; the basic chemical process used will be the Purex process; the plant will be located in the Southeast Quadrant of the 200 East Area; the plant will contain a double line of canyon process equipment, each line being so designed as to operate independently of the other line; all facilities in the 202-A Area will be designed for earthquake (Zone 2) resistance; in the design of Building 202-A, 276-A, 291-A, and 203-A, consideration will be given to achieving the highest degree of blast protection compatible with economical design, availability of data on the effects of bomb blast, and design and construction schedules; and building 211-A will include chemical storage capacity required for operation of the plant at full capacity for sixty days; building 203-A will include uranyl nitrate hexahydrate storage capacity of three 60,000 gallon stainless steel tanks; Building 241-A, Waste storage tank farm, will …

A high-density concrete shield is proposed for the biological shield. Adequate shielding of personnel and equipment can be obtained for about two-fifths the cost of a laminated shield of steel and masonite. The proposed shield is expected to behave satisfactorily during the life of the Reactor Unit and, in addition, the shield will possess considerable resistance to earthquake and blast loads. Details of design specification are given.

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Pertinent calculations for the WN System adsorption units were carried out on heat transfer, heat exchangers, and adsorption beds. Static and dynamic adsorption data are presented for Kr, Xe, CO, and N/sub 2/ on charcoal. (D.L.C.)

It is the purpose of this document to describe the proposed modifications to the cooling water treatment process used in reactor areas B, D, F, DR and H.

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A number of alloys of zirconium have been investigated as part of a program aimed at improving the high-temperature tensile and creep strength of zirconium. These alloys include aluminum, beryllium, lead, magnesium, molybdenum, niobium, tantalum, tin, titanium, tungsten, vanadium, and zinc, binary and ternary alloys.

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In order to obtain data for the development and design of the Purex dissolvers and to demonstrate to Manufacturing and Technical personnel the feasibility of increasing the size of dissolver cuts at BiPO{sub 4} and Redox, a dissolver production test program in a BiPO{sub 4} dissolver is requested. These tests are expected to supplement the program already initiated on the 321 Bldg. dissolver, explaining dissolver behavior to the extent that existing dissolvers can be operated under more nearly optimum conditions and that new dissolvers can be designed with accuracy.

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Sometime was available for development and improvement for future designs before K pile design was authorized. One of the objectives of this development program va was to improve upon downcomer design. It as evident that the proper approach to the problem lay not in duplication because of inadequate facilities as a means of circumventing the resultant effects of failure, but rather in the adoption of a more logical engineering approach -- analyze the cause of failure, profit from the past operating experience and concentrate upon the removal of these inherent difficulties. Accordingly, a downcomer design embodying a superior method of operation was designed and tested. The design minimizes vibration by dissipation of energy through a series of orifice screens rather than impact loading of large parcels of water and turbulent friction. It greatly simplifies the maintenance problems by designing for essentially complete replacement of the downcomer by ordinary maintenance methods. It provides for very rigid construction of the inlet section and 30 parallel flow paths in the vertical portion and thus the problem of blocking the flow has been eliminated. A detailed analysis of the points is presented in this report.

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This memorandum discusses slug rupture frequency which appears to be a factor that may limit the power level of C Pile. Since additional exposure of Group 8 uranium slugs has increased the available information on the behavior of material similar to that which will be charged into C Pile, a review of this tube power limitation has been made. Utilization of additional data has been possible by use of the revised method of calculating rupture rates discussed in reference (2).

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