MIL-HDBK-1025/10
Aerial Work. Aerial work may be on poles, trees, or aerial lift bucket trucks.
4.2.1.3
Underground Work. Most underground work will be considered work in a
4.2.1.4
confined space and should meet those protective requirements. Openings need to be guarded
against accidental entry. Additional ventilation and auxiliary pumping may be necessary.
Energized lines in the immediate vicinity of the work need to be tagged so that the worker is
aware of their proximity.
4.2.2 Work Area Protection. Improper work area set up, that is, poor signs, traffic
control or security could result in an accident. Vehicle operators should watch out for obstacles
such as a high-voltage pole and also for pedestrians. Activity regulations, federal regulations and
safe working procedures should be followed. Planning should be tailored to the work site.
Adequate barriers, warning signs, traffic cones, and lights, should be located on approaches to and
at the work areas, excavations, open manholes, parked equipment, and other hazards. Flagmen
are necessary if there is any doubt that the warning devices are not adequate as controls.
4.2.3 Normal Environmental Impacts. Potential mishaps can result from the
environment where the work is to be done.
Work in Elevated Positions or Near Waterways. It is required that a safety
4.2.3.1
lanyard be attached to a full body harness when a worker is in an elevated position above 1.2
meters (4 feet). Another danger of work in an elevated position is the possibility of dropping
materials or tools that might endanger others in the work area. Prevent others from passing
underneath by providing approved signs or guards in suitable locations. Provide supporting
devices for workers, tools, and materials where a falling hazard exists. Provide flotation devices
for workers where the falling hazard is near a waterway.
Work in Confined or Enclosed Spaces. A confined space is an enclosed
4.2.3.2
space with restricted access and insufficient ventilation such as vaults, manholes, and tanks.
Noise Control. Protection against the effects of noise exposure should be
4.2.3.3
provided for facility workers whenever the sound level equals or exceeds 85 dB(A) decibels
adjusted continuous level pressure or 140 decibels peak sound level pressure for impulse or
impact noise, regardless of the duration of exposure.
Lighting. Safety requires adequate illumination of the working area. Where
4.2.3.4
natural or installed artificial illumination is not sufficient, then temporary lighting should be
provided. The use of matches or open flames to provide such illumination is forbidden.
4.2.4 Hazardous Environmental Impacts. When dealing with hazardous substances,
become familiar with their material safety data sheets (MSDS) by requesting them from your
foreman or supervisor. Verify from the MSDS what allergic reactions may be expected and how
such reactions should be treated.
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