ASME B30.9-2010 pdf – Slings.
(10) 9-5.9.3 Periodic Inspection
(a) A complete inspection for damage to the sling shall be periodically performed by a designated person. Each sling and component shall be examined individually, taking care to expose and examine all surfaces. The sling shall be examined for conditions such as those listed in para. 9-5.9.4 and a determination made as to whether they constitute a hazard.
(b) Periodic Inspection Frequency. Periodic inspection intervals shall not exceed 1 yr. The frequency of periodic inspections should be based on
(1) frequency of sling use
(2) severity of service conditions
(3) nature of lifts being made
(4) experience gained on the service life of slings used in similar circumstances
(c) Guidelines for the time intervals are
(1) normal service — yearly
(2) severe service monthly to quarterly
(3) special service — as recommended by a qualified person
(d) Documentation that the most recent periodic inspection was performed shall be maintained.
(e) Inspection records of individual slings are not required.
9-5.9.4 Removal Criteria
A synthetic webbing sling shall be removed from service if conditions such as the following are present:
(a) missing or illegible sling identification (see Section 9-5.7)
(b) acid or caustic burns
(c) melting or charring of any part of the sling
(d) holes, tears, cuts, or snags
(e) broken or worn stitching in load bearing splices
excessive abrasive wear
(g) knots in any part of the sling
(h) discoloration and brittle or stiff areas on any part of the sling, which may mean chemical or ultraviolet! sunlight damage
(i) fittings that are pitted, corroded, cracked, bent, twisted, gouged, or broken
(j) for hooks, removal criteria as stated in
(k) for rigging hardware, removal criteria as stated in
ASME B30.26
(l) other conditions, including visible damage, that cause doubt as to the continued use of the sling
(10) 9-5.9.5 Repair
(a) Slings shall be repaired oniy by the sling manufacturer or a qualified person.
(b) A repaired sling shall be marked to identify the repairing agency per Section 9-5.7.
(c) Material used for sling repair shall comply with the provisions of this Chapter.
(d) Cracked, broken, melted, or damaged webbing material or fittings other than hooks shall not be repaired.
(e) Repair of hooks (ASME B30.1O), rigging hardware (ASME B30.26), below-the-hook lifting devices (ASME B30.20), or other special devices shall comply with the repair instructions in the applicable volumes.
‘f,) All repairs shall comply with the proof test requirements of Section 9-5.6.
(g) Modifications, alterations, or repairs to end attachments or fittings shall be approved by the sling manufacturer, fitting or component manufacturer, or a qualified person, and shall conform to all other provisions of the Chapter.
(Ii) There shall be no repairs of a load-bearing splice.
(i) Temporary repairs of either synthetic webbing slings or fittings shall not be permitted.
9-5.10.1 Sling Selection
(a) Slings that appear to be damaged shall not be used unless inspected and accepted as usable under Section 9-5.9.
(b) Slings having suitable characteristics for the type of load, hitch, and environment shall be selected in accordance with the requirements of Sections 9-5.5 and 9-5.8.
(c) The rated load of the sling shall not be exceeded. (ti) For multiple-leg slings used with nonsymmetrical loads, an analysis by a qualified person should be performed to prevent overloading of any leg.
(e) Multiple-leg slings shall be selected according to Tables 9-5.5.2-1 through 9-5.5.2-5 when used at the specific angles given in the table. Operation at other angles shall he limited to rated loads of the next lower angle giVen in the table or calculated by a qualified person.
(f) Pin diameters smaller than those shown in WSTDA-WS-I may reduce the rated load of the sling.
(g) The fitting shall be of the proper shape and size to ensure that it is seated properly in the hook or lifting device.
9-5.10.2 Cautions to Personnel
(a) All 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.
(b) Personnel should never stand in line with or next to the leg(s) of a sling that is under tension.
(c) Personnel shall not stand or pass under a suspended load.
(d) Personnel shall not ride the sling.
(e) Synthetic webbing slings shall not be used as bridles on suspended personnel platforms.