Doppler Weather Radar - METNET - India Meteorological Department

Radiation Hazard
DO NOT BYPASS INTERLOCKS
Microwave (electromagnetic) radiation exists during the operation of the WSR-98D/S. During all
operational modes, the antenna is scanned continuously. Consequently, the ANSI-designated
power density safety level of 5 mW/cm2 is not exceeded anywhere. However, if the scanning is
stopped for any reason with the transmitter energized, this level may be exceeded within a
cylindrical volume 12.2 meters in diameter and 183 meters long in front of the antenna
reflector, as indicated by the illustration at the end of this safety summary. Maintenance
personnel must not enter this zone when this condition exists, nor should the antenna be pointed
in a direction where there are any people within this zone. Refer to Figure SS-1.
Major Equipment Damage
Mismatching electrical connectors on the RDA can cause major equipment damage. Therefore,
ensure that the connector keys/color coding is followed when reconnecting connectors during
maintenance.
Loss of oil (lubricant) or glycol (coolant) from the generator engine could result in equipment
damage. When performing maintenance, inspect for leaks and tighten fittings as needed. An
automatic over temperature shut-off switch is used to prevent damage.
Removal of Tools
Remove all tools and dropped hardware such as locknuts, washers, screws, etc., from equipment
prior to restoring power to any WSR-98D/S equipment.
Hoist Safety
Before operating the hoist, the operator must be familiar with all operating controls of the hoist,
and must be instructed as to warnings on the hoist and the safe hoisting practices listed in the
operator's portion of the manual provided by the hoist manufacturer.
92