Thia repo rt was prep ared as an acco unt of Gove rnme nt spon sore d work . Neith er the Unite d State s, nor the Com miss ion, nor any perso n actin g on beha lf of the Com miss ion: A. Make s any warra nty or repre senta tion, expre ssed or impli ed, with respe ct to the accuracy . com plete ness , or usef ulne ss of the infor mati od cont aine d in this repo rt. or that the use of any Infor matio n, appa ratus . meth od, or proc ess discl osed in thie repo rt may not infrin ge prlva tely owne d right s; or B. Assu mes any liabil ittes with resp ect to the use of, or for dam ages resu lting from the use of any inform ation . appa ratus , metb od, or proc ess discl osed in this repo rt.As used in the above .•'pers on actin g on beha lf of the Com miss ion" inclu des any employee or contr actor of the Com miss ion, or emp loy e of such cont racto r, to the exten t that such empl oyee or contr actor of the Com miss ion, or empl oyee of guch contr actor prepa res, disse mina tes, or prov ides acce ss to, any infor matio n purs uant to his emp loym ent or contr act wlth the Com miss ion, or hi B empl oyme nt with such contr actor .

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II-1. Material Buckling as a Function of Core Composition (US in W) II-2. Material Buckling as a Function of Core Composition (UO2 in Mo) 3 2 III-l. Core Effectiveness vs NTU 44 III-2. Core Parameter Study 48 IV-1. Temperature Dependent Properties of Normal Hydrogen. .