Modeling of the Radiation Doses during Dismantling of RBMK-1500 Reactor Pressurized Tanks from Emergency Core Cooling System

Table 1

Workers operations and corresponding duration for dose calculation.

Number	Activity	Duration of activity if the automatic cutting equipment is used, min	Duration of activity if the manual cutting equipment is used, min
(1)	Preparation for cutting upper or lower ellipsoid	—	2 ± 0.5
(2)	Cutting upper or lower ellipsoid into two pieces*	—	18.6 ± 2.0
(3)	Preparation for radial cutting	5 ± 0.5	3 ± 0.5
(4)	Radial cutting*	27.8 ± 2.3	37.3 ± 4.1
(5)	Preparation for vertical cutting (four times)	6 ± 1	2 ± 0.5
(6)	Vertical cutting (four times)*	13.1 ± 1.1	17.5 ± 1.9

∗Time is calculated based on cutting equipment rate.