Table 4 Averted collective dose by evacuation and 5 cm topsoil removal at tcleanup = 1 y for indoor occupancy per unit area and deposition of 137Cs (manSv km-2)/(MBq m-2 137Cs) in three typical residential areas for different 134Cs/137Cs ratios and for the three different soil migration parameters given in Table 2. Average population densities in one-story buildings and high-rise building areas are assumed to be 2140 inhabitants km-2 and 11,600 inhabitants km-2, respectively.

From: Time-dependence of decontamination efficiency after a fallout of gamma-emitting radionuclides in suburban areas: a theoretical outlook on topsoil removal

 

Wood

Brick

Multistory

134Cs/137Cs-ratio

0.56

1

1.47

0.56

1

1.47

0.56

1

1.47

JAPAN_01

126.3

121.0

134.3

63.6

60.9

67.6

99.1

95.0

105.4

SWEDEN_01

103.3

118.3

138.0

52.0

59.6

69.5

81.1

92.9

108.3

SWEDEN_02

54.5

57.4

62.0

28.9

27.4

31.2

42.8

45.1

48.7

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