Doppler Weather Radar - METNET - India Meteorological Department

Average power densities less than 5 mW/cm 2 are regarded as safe for indefinite exposure. Power
densities greater than 5 mW/cm 2 should be regarded as potentially hazardous.
Direct Antenna Into Open Area When Transmitting
When it is necessary to perform maintenance with power radiating from the antenna, take the
necessary steps to keep the antenna directed into an open area whenever possible.
Secure All Material When Not In Use
Secure all tools, chassis, and covers before operating equipment.
Restore All Interlocks
Restore all interlock switches to normal operating condition immediately upon completion of
work on the unit involved.
Do Not Use Metal Tools near Exposed Parts
Do not use brushes, brooms, or other tools that have exposed metal parts within 1.2 meter of any
electrical equipment having exposed current-carrying parts.
Do Not Use Ferrous Tools Or Instruments Near Klystrons
Do not use steel or iron tools near klystrons. Such tools may be pulled from the technicians
grasp and may cause damage to the tube.
E.2. Specific Safety Requirements
Tower Safety
To prevent death or severe injury in falling from the tower, the following procedures must be
followed:
• Use hand rails and rest platforms when using the stairs for access to/from Antenna area.
• Ensure that the Antenna floor hatch is closed and secured at all times when not in use.
Electrical Shock Hazards
Prime power voltages and high voltages within cabinets can cause death or severe injury. These
voltages are contained in the generator area, the Radar Data Acquisition (RDA) area and the
Antenna area. Warning signs and labels are located on the guards and barriers to alert personnel
of the potential hazard. DO NOT DISREGARD THESE WARNINGS. Ensure that safety
interlocks, barriers and guards are not bypassed.
In the RDA, the CRT has extremely high voltages present that can cause death or severe injury.
The transmitter high voltage can also cause death or severe injury. Warning labels and interlocks
are present to prevent electrical shock.
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