TNAG-1776-FCO40-2530-Daya-Bay-nuclear-power-station-project-safety-concerns-in-Ho-1988 — Page 222

Treatment of Grass Sample Results

I. Divide activity per m2 by the lower DERL for the relevant isotope taken

from the table below.

2.

Express the result in DERL's (Milk) or DERL's (Veg) as appropriate.

Isotope

Lower DERL (Bq m−2)†

Basis

Sr-89

1.8 X 106

Milk

Sr-90

1.0 X 105

Milk

Ru-103

1.7 X 107

Veg

Ru-106

1.2 X 106

Veg

I-131

1.3 X 104

Milk

1-133

7.2 X 105

Milk

Cs-134

3.1 X 104

Milk

Cs-137

3.5 X 104

Milk

Pu-239

1.0 X 106

Veg

Pu-240

1.0 X 106

Veg

Am-241

2.0 X 104

Veg

+ DERI value as given in reference 20.

'

104

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