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Recommended Operating
Practices for
Polyester Roundslings
The
purpose of this information is to provide guidelines for
the qualified person responsible for web sling selection,
rigging, inspection and use.
Mechanical Considerations:
- Determine weight
of the load. The weight of the load shall be within
the rated capacity of the polyester roundsling(s).
- Select a polyester
sling having suitable characteristics for the type of
load, hitch and environment.
- Polyester roundslings
shall not be loaded in excess of rated capacity. Consideration
shall be given to the roundsling to load angle which
affects rated capacity.
- Polyester roundslings
with fittings which are used in a choker hitch shall
be of sufficient length to assure that the choking action
is on the roundsling, and never on the fitting.
- Polyester roundslings
used in a basket hitch shall have the load balanced
to prevent slippage.
- The opening in fittings
shall be the proper shape and size to ensure that the
fitting will seat properly in the hook or other attachments.
- Polyester roundslings
shall always be protected from being cut by sharp corners,
sharp edges, protrusions or abrasive surfaces.
- Web slings shall
not be dragged on the floor or over abrasive surfaces.
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- Web
Slings shall not be twisted, shortened, lengthened, tied
in knots, or joined by knotting.
- Web slings shall not
be pulled from under loads when the load is resting on the
polyester roundsling.
- Do not drop polyester
roundslings equipped with metal fittings.
- Polyester
roundslings that appear to be damaged shall not be used
unless inspected and accepted as usable under Section 4.4
& 4.5 of the Recommended
Standard Specification for Synthetic Polyester Roundslings
manual.
- The polyester roundsling
shall be hitched in a manner providing control of the load.
- Personnel, including
portions of the human body, shall be kept from between the
sling and the load, and from between the sling and the crane
hook or hoist hook.
- Personnel shall stand
clear of suspended load.
- Personnel shall not
ride roundsling.
- Shock loading shall
be avoided.
- Twisting and kinking
the legs (branches) shall be avoided.
- Load applied to the
hook shall be centered in the base (bowl) of hook to prevent
point loading on the hook.
- During lifting, with
or without the load, personnel shall be alert for possible
snagging.
- The polyester roundslings
legs (branches) shall contain or support the load from the
sides above the center of gravity when using a basket hitch.
- Polyester roundslings
shall be long enough so that the rated load (rated capacity)
is adequate when the sling to load angle is taken into consideration.
- Only polyester roundslings
with legible identification tags shall be used.
- Tags and labels should
be kept away from the load, hook and point of choke.
- The polyester roundslings
shall not be constricted or
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