The Optimization of Radiation Protection in the Design of the High Temperature Reactor-Pebble-Bed Module

Figure 6

(a) Sketch of the graphite sphere cask; (b) the dose limit plane (0.03 mSv/h) and the dose rate contour of the graphite sphere storage cask with respect to distance and the thickness of shielding; (c) the dose rate and prohibited distance before and after optimization.

(a)

(b)

(c)