Honeywell SPZ-8000 - Maximum Permissible Exposure Level (MPEL

SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
PRIMUS
R
650 Weather Radar System
B--14
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 of the envelope in which radiation
exposure levels equal or exceed 10 mW/cm
2
, the limit recommended
in FAA Advisory Circular AC No. 20--68B, August 8, 1980, Subject:
Recommended Radiation Safety Precautions for Ground Operation of
Airborne Weather Radar . The radius, R, to the Maximum Permissibl e
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 IEEE Standard for Safety Level with Respect to Human Exposure
to Radio Frequency Electronic Fields 3kHz to 300 GHz (IEEE
C95.1--1991), recommends an exposure level of no more than 5
mW/cm
2
.
Honeywell Inc. recommends that operators follow the 5 mW/cm
2
standard. Figure B--5 shows MPEL for both exposure levels.
Maximum Permissible Exposure Level Boundary
Figure B--5