Understanding Infrared Thermography Reading 3

Safety codes have been developed that specify the minimum distances to be
maintained from live equipment and, in addition, protective clothing and
devices (face shield, protective clothing and insulated gloves) are required in
all facilities. Although the codes may vary from facility to facility, they all spell
out the safety rules to which thermographers are expected to adhere.
Examples of National Electrical Safety (NES) codes currently being observed
in facilities in the United States and Canada that specify the minimum
clearance zone from operating high voltage equipment in terms of voltage
and distance are described in Table 4.2. thermographers must be aware of
the safety regulations in force and know the recommended protective clothing.
It is recommended that the applicable safety guidelines set forth in the
following documents be reviewed:
1. National Fire Protection Association NFPA 70E, Standard for Electrical
Safety Requirements for Employee Workplace, 1995, and
2. National Fire Protection Association NFPA 70B, Recommended Practice
for Electrical Equipment Maintenance, 1994.
Charlie Chong/ Fion Zhang