addition, for aerial-lift equipment with hydraulic lines to controls at platform level, the
aerial platform shall be raised to its maximum height and left in the raised position
for 5 minutes. Initial contact of an energized feature shall be made with on one on
the platform so that the dielectric arm-current may be measured. No one standing on
the ground shall be in contact with the vehicle while tests are being made.
This arm-current reading shall be taken from a position on the equipment before
starting work each day, each time during the day when a higher voltage is going to
be worked, and when changed conditions indicate a need for additional tests. If the
dielectric arm-current is less than 1 microampere for each kilovolt of nominal line-to-
line voltage, the aerial platform may be lowered and work started. A written record of
these tests shall be maintained both with the equipment and in the responsible
operating office. Work operations shall be suspended immediately upon indication of
a malfunction in the equipment.
aerial platform shall be raised to its maximum height and left in the raised position
for 5 minutes. Initial contact of an energized feature shall be made with on one on
the platform so that the dielectric arm-current may be measured. No one standing on
the ground shall be in contact with the vehicle while tests are being made.
This arm-current reading shall be taken from a position on the equipment before
starting work each day, each time during the day when a higher voltage is going to
be worked, and when changed conditions indicate a need for additional tests. If the
dielectric arm-current is less than 1 microampere for each kilovolt of nominal line-to-
line voltage, the aerial platform may be lowered and work started. A written record of
these tests shall be maintained both with the equipment and in the responsible
operating office. Work operations shall be suspended immediately upon indication of
a malfunction in the equipment.
4.2.5 Cleaning Surfaces. Workmen shall thoroughly clean the bottom of conductive
footwear before entering the aerial platform. The floor of the aerial platform shall be
inspected for dirt or other material which might prevent good contact between the
floor and conductive footwear. Foreign material discovered by this inspection shall
be removed immediately.
footwear before entering the aerial platform. The floor of the aerial platform shall be
inspected for dirt or other material which might prevent good contact between the
floor and conductive footwear. Foreign material discovered by this inspection shall
be removed immediately.
4.2.6 Warning and Control Procedures. One person, capable of operating all the
controls, shall be stationed on the ground near the vehicle when workmen are on the
aerial platform. He or she shall keep other persons from walking under the work
area, and shall keep them clear of the vehicle when the aerial platform is elevated.
When workmen are on the aerial platform, all movements of the lift assembly shall
be controlled by the workmen aloft, except under emergencies. Under such
emergency conditions, the ground operator shall mount the vehicle by means of an
insulated or insulating device or by other means such that the operator does not
simultaneously contact the vehicle and ground. No one on the ground shall be in
contact with the vehicle or protective grounds while the aerial platform is in a raised
position.
controls, shall be stationed on the ground near the vehicle when workmen are on the
aerial platform. He or she shall keep other persons from walking under the work
area, and shall keep them clear of the vehicle when the aerial platform is elevated.
When workmen are on the aerial platform, all movements of the lift assembly shall
be controlled by the workmen aloft, except under emergencies. Under such
emergency conditions, the ground operator shall mount the vehicle by means of an
insulated or insulating device or by other means such that the operator does not
simultaneously contact the vehicle and ground. No one on the ground shall be in
contact with the vehicle or protective grounds while the aerial platform is in a raised
position.
4.2.7 Bonding Straps. Initial contact with the energized circuit should be made by a
wand bonded to the aerial platform. The braided bonding straps from the aerial
platform shall be attached to the energized conductor before a workman otherwise
makes bodily contact with the energized circuit. Bonding straps and connections
shall be thoroughly inspected before use. At least one bonding strap shall remain
attached to the energized conductor at all times while work is being performed on
the circuit. Before an energized conductor is opened, a temporary jumper with
positive connections and adequate current carrying capacity shall be used as a
bridge to prevent the bonding straps from becoming the source of circuit
conductance, Bonding straps, including anchorage and clips,
wand bonded to the aerial platform. The braided bonding straps from the aerial
platform shall be attached to the energized conductor before a workman otherwise
makes bodily contact with the energized circuit. Bonding straps and connections
shall be thoroughly inspected before use. At least one bonding strap shall remain
attached to the energized conductor at all times while work is being performed on
the circuit. Before an energized conductor is opened, a temporary jumper with
positive connections and adequate current carrying capacity shall be used as a
bridge to prevent the bonding straps from becoming the source of circuit
conductance, Bonding straps, including anchorage and clips,
13 (FIST 3 - 29 5/90)