Maximum Permissible Exposure Level (Mpel - Honeywell PRIMUS 1000 Pilot's Manual

MAXIMUM PERMISSIBLE EXPOSURE LEVEL (MPEL)

Heating and radiation effects of weather radar can be hazardous to life.
Personnel should remain at a distance greater than R from the radiating
antenna in order to be outside the envelope in which radiation exposure
levels equal or exceed 10 mW/cm
Advisory Circular AC No. 20–68B, August 8, 1980, Subject:
Recommended Radiation Safety Precautions for Ground Operation of
Airborne Weather Radar. The radius, R, distance to the maximum
permissible exposure level boundary is calculated for the radar system
on the basis of radiator diameter, rated peak–power output, and duty
cycle. The greater of the distances calculated for either the far–field or
near–field is based on the recommendations outlined in AC No.
20–68B.
The American National Standards Institute, in their document ANSI
C95.1–1982, recommends an exposure level of no more than 5 mW/cm
Honeywell Inc. recommends that operators follow the 5 mW/cm
standard. Figure A–6 shows the MPEL for the 12–inch antenna and
R
PRIMUS 660 Weather Radar System power.
A28–1146–134
REV 1 Jan/03
R
PRIMUS
2
, the limit recommended in FAA
MPEL Boundary
Figure A–6
PRIMUSr 660 Weather Radar System
1000 Integrated Avionics System
A–13/(A–14 blank)
2
.
2