Actions for NUCLEAR MERCHANT SHIP REACTOR PROJECT QUARTERLY TECHNICAL REPORT FOR JULY-SEPTEMBER 1958

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NUCLEAR MERCHANT SHIP REACTOR PROJECT QUARTERLY TECHNICAL REPORT FOR JULY-SEPTEMBER 1958

Published
United States : [publisher not identified], 1958.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1958.
Physical Description
microopaque : positive ; 8 x 13 cm

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Summary
Studies of the completed one-tweifth scale model of the power plant resulted in some auxiliary system arrangement changes. The large margin of safety inherent in the NMSR design is further emphasized by continued thermal and hydraulic studies. Core nuclear studies resulted in the elimination of burnable poison, since a probable core life of 822 days at 63.5 Mw can be achieved without burnable poison. Experiments by the Critical Experment Laboratory are described. The fuel enrichment was set at 4.20 wt.% U/sup 235/ for the 16 inner pass fuel elements and 4.60 wt.% U/sup 235/ for the 16 outer pass elements. The change from tube sheet fuel element design to the brazed ferrule design reduced the bundle length from 72 to 69 in. The basic reactor internals designs were established. Modlfications were made to the pressurizer, primary coolant pumps, steam generators, primary gate valves, and thermal insulation in the primary system. An 8 in. maximum lead thickness of secondary shield is required to reduce dose rate in passenger spaces to 0.5 rem/year. An 8 in. required minimum polyethylene thickness of secondary shield was calculated to ensure effective removal of the inelastically scattered fast flux. (For preceding period see BAW- 1118.) (W.D.M.)
Report Numbers
BAW-1124
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: AT(30-0)-274
NSA number: NSA-14-006029
OSTI Identifier 4212571
Research organization: Babcock and Wilcox Co. Atomic Energy Div., Lynchburg, Va.
Funding Information
Sponsored by USDOE.
View MARC record | catkey: 38672930