Shielding analyses of the ITER NBI ports

Sato, Satoshi; Takatsu, Hideyuki; Seki, Yasushi; *; *; Iida, Hiromasa; Plenteda, R.*; Santoro, R. T.*; Valenza, D.*; Ohara, Yoshihiro; et al.

Fusion Technology, 34(3), p.1002 - 1007, 1998/11

no abstracts in English

2-D overall shielding analysis of ITER tokamak machine

Sato, Satoshi; Takatsu, Hideyuki; *; *; Iida, Hiromasa; R.Santoro*

Fusion Technology 1996, 0, p.1587 - 1590, 1997/00

no abstracts in English

Parametric calculations using VANESA model in CONTAIN/LMR code

*; *

PNC TJ9582 96-003, 292 Pages, 1996/01

PNC-TJ9582-96-003.pdf:6.61MB

This report describes parametric calculations and program investigation carried out as a preparation work for applying VANESA (the FP emission analytical model from the debris) installed in containment system safety analysis code CONTAIN/LMR to the fast reactor analysis. In the parametric calculations, the VANESA model was made to combine with CORCON (the debris-concrete interaction analytical model) on the assumption of the system in which the sodium pool existed on the debris which fell from the reactor vessel in melt-through accident of the fast reactor. In making sodium pool temperatures, sodium pool depth, debris temperatures and decay heat, to be a parameter, five calculations were carried out. The following were mainly investigated in the program investigation (1)chemical reactions considered in present model, (2)decision procedures of the priority of each chemical reaction, (3)effects of the sodium pool for the FP/aerosol emission, (4)and delivery and acceptance method of data between CORCON/VANESA and the other aerosol behavior analytical model. This paper describes main result in following. (1)FP/aerosol emission rate by the debris-concrete interaction also increases, when the debris initial temperature rises. On the contraly, the FP/aerosol emission rate decreases, when a decay heat decreases. (2)When initial sodium pool temperature was heightened, though it was anticipated that the debris-concrete interaction was promoted, since the cooling of the debris slows down, such result could not be seen in the calculation. This reason though temperature gradient between debris and sodium pool decreases, it is because the heat removal quantity of the debris does not change as a result almost, since heat transfer rate between debris and sodium pool rises in order to offset this just. (3)By the above reason, FP/aerosol emission rate by the debris-con㎝rete interaction hardly changed, even if sodium pool temperature and depth are changed as an initial ...