Section 296-155-33815. Synthetic rope slings.

(1) Identification. You must verify all slings have legible identification information attached to the sling which includes the following information:

(a) Name or trademark of the manufacturer;

(b) Manufacturer's code or stock number;

(c) Type of fiber material;

(d) Rated loads for the types of hitches used, and the angle that the load is based on;

(e) Number of legs, if more than one;

(f) Repairing agency, if the sling has ever been repaired.

(2) Inspection.

(a) A qualified person must inspect synthetic fiber rope slings before their initial use, according to Table 13, both:

(i) When the sling is new; and

(ii) Whenever a repair, alteration, or modification has been done.

(b) A qualified person must perform a visual inspection for damage, each day or shift the synthetic fiber rope sling is used. Immediately remove any sling from service that is damaged beyond the criteria listed in Table 13.

(c) A qualified person must perform periodic inspections on synthetic fiber rope slings, according to Table 13.

(i) Examine each sling and component individually, taking care to expose and examine all surfaces.

(ii) Inspect the entire length including splices, end attachments, and fittings.

(iii) Remove slings from use if any of the conditions in Table 13 are found.

(iv) Keep a record of the most recent periodic inspection available, including the condition of the sling.

Note:	An external code mark on the sling is an acceptable means of recording the inspection as long as the code can be traced back to a record.

Table 13

Synthetic Rope Sling Inspection and Removal Criteria

(3) Repair, alteration, or modifications. You must meet the following requirements when repairing synthetic rope slings:

(a) Synthetic rope slings must only be repaired by the manufacturer or a qualified person;

(b) You must mark the sling to show the repairing agency;

(c) You must use components that meet the requirements of this part for sling repair;

(d) You must not repair slings by knotting or resplicing existing sling ropes;

(e) You must proof load test repaired slings according to the requirements in subsection (4) of this section.

(4) Proof load test. The sling manufacturer or a qualified person must proof load test repaired slings and slings incorporating previously used or welded fittings before initial use, according to Table 14:

Table 14

Synthetic Rope Sling Proof Load Requirements

(5) Rated load.

Note:	Rated loads are based on the following factors:
	• Strength of the sling material;
	• Design factor;
	• Type of hitch (see Figure 13, Hitch Types for Synthetic Rope Slings);
	• Angle of loading (see Figure 7, Angle of Loading);
	• Diameter of curvature over which the sling is used (see Figure 8, D/d Ratio).

(a) You must use synthetic rope slings within the rated loads shown in Tables 18 and 19 in ASME B30.9-2010. For angles that are not shown in these tables, either use the rated load for the next lower angle or one calculated by a qualified person.

(b) You must rate slings with the load capacity of the lowest rated component of the sling. For example, if you use fittings that are rated lower than the sling material itself, identify the sling with the lower-rated capacity.

(c) The use of horizontal sling angles less than 30 degrees is prohibited, unless recommended by the sling manufacturer or a qualified person. (See Figure 7.)

(d) Rated loads for slings used in a choker hitch must conform to the values shown in the above referenced tables, provided that the angle of choke is 120 degrees or greater.

(e) You must use Figure 9, the manufacturer, or a qualified person to determine the rated load if the angle of choke in a choker hitch is less than 120 degrees.

Note:	Legs 5 degrees or less from vertical may be considered vertical. For slings more than 5 degrees vertical, the actual angle must be used.

(6) Use of synthetic ropes.

(a) You must use synthetic rope slings safely by doing all of the following:

(i) You must shorten or adjust slings only with methods approved by the manufacturer or qualified person;

(ii) You must not shorten or lengthen slings by knotting or twisting;

(iii) You must hitch slings in a way that provides control of the load;

(iv) Slings in contact with edges, corners, protrusions, or abrasive surfaces must be protected with a material of sufficient strength, thickness, and construction to prevent damage, see Figure 3;

(v) You must not allow the sling or load to rotate when hand-tucked slings are used in a single leg vertical lift application; and

(vi) You must keep all parts of the human body from between the sling and the load, crane, or hoist hook.

(b) All of the following is prohibited:

(i) Intentional shock loading; and

(ii) Twisting or kinking.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 16-09-085, § 296-155-33815, filed 4/19/16, effective 5/20/16. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060 and chapter 49.17 RCW, and 29 C.F.R. 1926, Subpart CC. WSR 13-02-068, § 296-155-33815, filed 12/31/12, effective 2/1/13.]

RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 16-09-085, § 296-155-33815, filed 4/19/16, effective 5/20/16. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060 and chapter 49.17 RCW, and 29 C.F.R. 1926, Subpart CC. WSR 13-02-068, § 296-155-33815, filed 12/31/12, effective 2/1/13.