15.D Slings.
15.D.01 General.
This section applies to slings used in conjunction with load handling equipment (LHE) for hoisting and horizontally moving loads. All slings must be manufactured, used, inspected and maintained according to ASME B30.9.
- Inspections.
- (1) Slings, all fastenings and attachments must be visually inspected by a CP each day or shift when in use.
- (2) Annual inspections must be performed by a CP and must be documented. Documentation must be available on site and available to the GDA upon request.
- (3) Additional inspections must be performed during sling use, where service conditions warrant. Damaged or defective slings must be immediately removed from service.
- Rigging practices.
- (1) All slings must be hitched in a manner providing control of the load;
- (2) Softeners. Sharp edges in contact with slings must be padded with material of sufficient strength to protect the sling;
- (3) Slings must be shortened or adjusted only by methods approved by the sling manufacturer or a qualified person;
- (4) The use of slings will be such that the entire load is positively secured;
- (5) In a basket hitch, the load must be balanced to prevent slippage;
- (6) When using a basket hitch, legs of the sling must contain or support the load from the sides, above the center of gravity, so that the load remains under control;
- (7) In a choker hitch, the choke point must only be on the sling body, never on a splice or fitting;
- (8) In a choker hitch, an angle of choke less than 120 degrees must not be used without reducing the rated load;
- (9) Slings must not be constricted, bunched, or pinched by the load, hook or any fitting;
- (10) The load applied to the hook must be centered in the base (bowl) of the hook to prevent point loading on the hook, unless the hook is designed for point loading;
- (11) An object in the eye of a sling is not wider than one-third the length of the eye;
- (12) The load must not be landed on the sling;
- (13) A sling must not be pulled from under the load when load is resting on the sling;
- (14) Slings must not be dragged over abrasive surfaces;
- (15) Shock loading is not allowed;
- (16) Slings must not be twisted or kinked.
Figure 15-1
- All slings must be manufactured under ASME B30.9 guidelines and must have an affixed durable permanent identification tag that includes the following as a minimum:
- (1) Name or trademark of the manufacturer (country identification only is not acceptable);
- (2) Type of material used (synthetic web slings, synthetic round slings or synthetic rope slings only);
- (3) WLL for a given type of hitch and configuration;
- (4) Number of legs if more than one.
- Natural fiber rope must not be used to fabricate slings.
Figure 15-2 Wire Rope Clip Orientation
- Fabricated eye slings or endless loop slings using alloy steel wire rope clips or clamps for hoisting material or lifting are prohibited except where the application precludes the use of prefabricated slings. All slings fabricated using alloy steel wire rope clips or clamps must be designed by a RPE for the specific application. > See Figures 15-1 and 15-2.
Knowledge Check Choose the best answer for the question.
15-4. Which of the following is considered a safe rigging practice?
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