6 December 2006
Including change 1, 7 December 2006
Knots one large knot or several smaller ones at the same height may be
evidence of a weak point on the pole.
Depth of setting evidence of the existence of a former ground line
substantially above the existing ground line may be an indication the pole
is not longer buried to a sufficient extent.
Soil conditions soft, wet or loose soil may not support any changes of
stress on the pole.
Burn marks burning from transformer failures or conductor faults could
damage the pole.
10-4.2.2 Wood poles shall be inspected and tested by the qualified employee prior to
any climbing activities using one of the following methods:
Hammer Test rap the pole sharply with a hammer weighing about 3 lb
(1.4 kg), starting near the ground line and continuing upwards
circumferentially around the pole to a height of approximately 6 ft (2 m).
The hammer will produce a clear sound and rebound sharply when
striking sound wood. Decay pockets will be indicated by a dull sound or a
less pronounced hammer rebound. Also, prod the pole as near the
ground line as possible using a pole prod or a screwdriver with a blade at
least 5 in (127 mm) long. If substantial decay is encountered, the pole is
Rocking Test apply a horizontal force to the pole and attempt to rock it
back and forth in a direction perpendicular to the line. Caution must be
exercised to avoid causing power lines to swing together. The force may
be applied either by pushing with a pike pole or pulling with a rope. If the
pole cracks during the test, it shall be considered unsafe.
10-4.2.3 Determine if the configuration of conductors and equipment on the pole will
provide adequate climbing space.
10-4.2.4 Determine if the removal of supporting conductors or guys may affect the
safety of workers.
10-4.2.5 Determine if the poles to be climbed can be supported in such a way as to
safely support workers on the poles. Pikes are not acceptable as a support method
while personnel are working on poles.
POLE CLIMBING EQUIPMENT.