3.2.2 NATIONAL RADIOLOGICAL PROTECTION BOARD
The NRPB provides information and advice to officials in the United Kingdom responsible for the protection from radiation hazards either in the population as a whole or
within population subgroups. The recommended NRPB guidelines [9–11] are the same
for occupational and public environments. The basic restriction specified by the NRPB
is an induced current density of 10 mA/m2
in the head and trunk while the investigation levels for EMF exposure at 50 Hz are 12 kV/m and 1600 µT, respectively [26].