The Merchant Shipping and Fishing Vessels (Health and Safety at Work) (Electromagnetic Fields) Regulations 2016 No. 1026

THE SCHEDULE

PART 3 Indirect effects of exposure

Action levels – non-thermal effects

Table AL5 - ALs for contact currents

Frequency of electromagnetic field in which an object is present	Contact current ALs (Ic)[mA]
up to 2.5 kHz	1.0
2.5 ≤ f < 100 kHz	0.4 f
100 ≤ f ≤ 10,000 kHz	40

NOTES

1.  “f” is the frequency expressed in kHz.

2.  The ALs are root mean square values.

3.  The ALs represent the maximum steady state current created during a continuous contact with an object in an electromagnetic field.

Table AL6 – ALs for static magnetic fields

Potential indirect effect	Magnetic flux density ALs (B0)[mT]
Interference with active implanted medical devices	0.5
Attraction and projectile risk in the fringe field of high field strength sources (> 100 mT)	3

NOTE

The AL for interference with active implanted medical devices represents the maximum field value at any place where a worker may be working.

Action levels – thermal effects

Table AL7 - AL for contact currents

Frequency of electromagnetic field in which an object is present	Contact current ALs (Ic) [mA]
100 kHz ≤ f < 110 MHz	40

NOTES

1.  The AL is a root mean square value.

2.  The AL represents the maximum steady state current created during a continuous contact with an object in an electromagnetic field.