# The Control of Electromagnetic Fields at Work Regulations 2016, Chapter: Action levels – thermal effects

Extent: E+W+S

Table AL3 – ALs for exposure to electromagnetic fields from 100 kHz to 300 GHz
Frequency range
External electric field strength ALs (E) [Vm-1]
Magnetic flux density ALs (B)[µT]
Power density AL (S)[Wm-2]
100 kHz ≤ f < 1 MHz
6.1 × 102
2.0 × 106/f
-
1 ≤ f < 10 MHz
6.1 × 108/f
2.0 × 106/f
-
10 ≤ f < 400 MHz
61
0.2
-
400 MHz ≤ f < 2 GHz
3 × 10-3 f1/2
1.0 × 10-5 f1/2
-
2 ≤ f < 6 GHz
1.4 × 102
4.5 × 10-1
-
6 ≤ f ≤ 300 GHz
1.4 × 102
4.5 × 10-1
50
Exposure levels not exceeding the ALs will be compliant with:
Up to 6 GHz: the health effect ELVs in Table ELV4
6 - 300 GHz: the health effect ELV in Table ELV6
The health effect ELV in Table ELV6

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Source: https://www.legislation.gov.uk/uksi/2016/588/schedule/part/2/chapter/2 (the official version)
Page: https://openlegislation.uk/control-of-electromagnetic-fields-at-work-regulations-2016/schedule/part-2/chapter-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.