Paragraph 1
A water undertaker may use a screening strategy for gross alpha and gross beta to monitor for the parametric indicator value for indicative dose M1. The recommended screening value for gross alpha is 0.1Bq/l and for gross beta is 1.0Bq/l.
If the gross alpha activity exceeds 0.1Bq/l or the gross beta activity exceeds 1.0Bq/l, analysis for specific radionuclides is required.
The radionuclides to be measured must be based on all relevant information about likely sources of radioactivity.
Annotations
Marginal citations
- M1
Where appropriate gross beta activity may be replaced by residual beta activity after subtraction of the K-40 activity concentration.