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Example:
If inspecting a tank that is 6 m
(20 ft)
tall, the No Entry Fall Zone radii
must be no smaller than 3 m
(10 ft)
from the area below the area of crawler
operation.
5.2.2. Tether Requirements and Attachment
When used at a height greater than 2 m
(6 ft)
, the
SKOOT HT
crawler MUST be
tethered with a proper tether system to prevent the crawler from falling. The
tether system must:
►
be capable of safely suspending the crawler from above in case the crawler
detaches from the inspection surface;
►
have sufficient capacity to catch and hold a 70 kg
(150 lb)
load;
►
include a mechanism
(i.e. self retracting inertia reel fall arrester)
or person to
continuously take up slack in the tether as the crawler moves;
►
include a lifting hook with a safety latch to prevent accidental disconnection.
►
be capable of withstanding contact with the inspection surface which may be
up to 350°C
(662°F)
, without melting or degrading
Before placing the crawler on the surface to be inspected
(e.g. tank)
, attach the
tether to the
SKOOT HT
.
WARNING!
FALLING OBJECT HAZARD
.
Failure to comply with the warnings, instructions, and
specifications in this manual could result in
SEVERE
INJURY
or
DEATH
.
WARNING!
Do
NOT
operate or place
crawler on a surface higher than 2 m
(6 ft)
without a
proper tether held taut at all times.
WARNING!
Hook the tether hook to the
provided lifting sling
BEFORE
placing the crawler on
the surface to be inspected
(e.g. tank)
.
IMPORTANT
:
Tether hook must have a safety latch to prevent
accidental disconnection.
CAUTION!
The overhead attachment point
for the tether must be located as close as possible to
a location directly above the crawler to minimize
dangerous swinging of the crawler should it detach
from the inspection surface.
