The Fukushima Event: The Outline and the Technological Background

Table 7

Conjectural, hypothetical, conservative, and realistic radiological impact on environment of the Fukushima event.

Scenario No.	Type	Release (TBq)			Notes
I	Conjectural	2.37e8			Physical limit—Table 3
II	Conjectural	0.30e8			Theoretical limit—Table 6
III*	Hypothetical	0.21e8			Theoretical limit w/o Noble Gases
—		RC	RB	TOT	—
IV*	Conservative	4.5e5	8.3e5	1.3e6	Assumptions (A) to (E) in text
V*	Realistic	18.0	3.7e4	3.7e4	Mitigation factors (1) to (4) in text

*Without Noble Gases. Total amount of radioactivity associated with Noble Gases in Fukushima NPP, Units 1 to 4, is 9.37e6 TBq (from Tables 3 and 6).