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Okumura, Keisuke; ; Mori, Takamasa; Nakakawa, Masayuki;
JAERI-M 90-096, 169 Pages, 1990/06
no abstracts in English
*; *; Sukekawa, Masayuki*; *
PNC TJ9124 88-001, 103 Pages, 1988/04
Strength tests of SUS304 stainless steel welded joint and Mod.9Cr-1Mo forging base metal at elevated temperature were carried out for the purpose of getting data needed for prototype Fast Breeder Reactor and Demonstration plant. Same as last year's, examined materials were welded joints of SUS304 plate (40t) and SUS304 forging (350t). For base metal test, Mod.9Cr-1Mo forging (550t) were applied. Creep test, bending creep and fatigue test of welded joint of SUS304 plate and SUS304 forging, and creep test of weld metal were carried out. Tensile test, creep test and fatigue test of Mod.9Cr-1Mo forging were carried out. Results of these tests are as follows. (1)308 weld metal and welded joint of 304 plate and forging show that their creep strength are higher than those of Material Strength Standard, PNC. (2)Bending creep fatigue strength of welded joint of plate and forging are a little higher than those strength on axial load at 500
C and are a considerable higher than those at 500C. (3)Tensile strength, creep strength and fatigue strength of Mod.9Cr-1Mo forging steel are same as Material Strength Standard, PNC (preliminary). And there are no significant difference between two data of surface and middle of forging.
; Nakagawa, Masayuki;
JAERI-M 86-124, 57 Pages, 1986/08
no abstracts in English
Nakagawa, Masayuki; ;
JAERI-M 85-009, 55 Pages, 1985/02
no abstracts in English
Nakagawa, Masayuki; ; *
Journal of Nuclear Science and Technology, 15(4), p.302 - 309, 1978/04
Times Cited Count：2no abstracts in English
; ; Nakagawa, Masayuki; ; Katsuragi, Satoru
JAERI 1255, 200 Pages, 1978/03
no abstracts in English
Katsuragi, Satoru; ; ; Nakagawa, Masayuki
JAERI 1199, 116 Pages, 1970/12
Improvements have been made for the treatments of effective cross section of heavy nuclides in the resonance energy region, and fast reactor group constants in this energy region have been produced for nuclides 
U, 
U, 
Pu, and 
Pu. These group constants are thought to be accurate compared with existing fast group constants in the following sense. (1) The resonance parameters (including those in the unresolved resonance energy region) are evaluated so as to fit measured cross sections. (2) Accurate cross sections are obtained by a calculating procedure, which uses a reasonable representation of cross sections, without waste of huge computing time. (3) The effective cross sections are obtained using exact spectra as weights, because conventional approximation methods yield less accurate results. (4) An investigation was made for the treatment of interference effects. And interference effects. And interference effects with U is taken into account for shielding factors. (5) The energy variation of 
(
/
) values and for U and Pu is properly reproduced, and an appropriate group structure is adopted taking this energy variation into consideration. For analyses and design studies of fast reactor systems, the present group constants should be used together with those listed in the report JAERI 1195.
