1.5 MSBR INDUSTRIAL DESIGN STUDY
M. I. Lundin
The subcontract' negotiated between ORNL and the Ebasco Services group, consisting of Ebasco, Babcock and Wilcox, Byron Jackson, Cabot, Conoco, and Union Carbide Companies, was signed. This subcontract covers the conduct of an industrial design study of a 1000-MW(e) MSBR plant.
12. MSR Program Semiannu. Progr. Rep. Feb. 28, 1971, ORNL-4676, p. 36.
Task I, the selection of a reference conceptual design, is essentially complete. Two progress reports were submitted. The overall core size is the same as that in the O W L reference concept: but a slab-type graphite element is proposed. Several of these slabs are held at the top and bottom in a hexagonal array as shown in Figs. 1.10 and 1.1 1. This assembly is sufficiently small to be handled and replaced as a unit. One hundred fifty-seven such arrays are required for the core. A 2-ft-thick radial graphite reflector surrounds the core. A boron-containing thermal shield separates the reflector from the pressure vessel to reduce the radiation damage resulting from transmutation of boron in the Hastelloy N.
FiG 1.10. MSBR industrial study proposed graphite array.
Fig. 1.11. MSBR industrial study proposed graphite array zone I - section at midplane.