ASME B30.9:2010 pdf download Slings Safety Standard for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks, and Slings
9-1.5.4
Tables9-1.5.4-1 and 9-1.5.4-2 show rated loads forchoker hitches for specific grades of chain, provided thatthe angle of choke is 120 deg or greater [seeFig. 9-1.0-1, illustration (e)].For angles other than thoseshown in these tables, use the rated load for the nextlower angle, or a qualified person shall calculate therated load.
9-1.5.5
Rated loads for angles of choke less than 120 deg shallbe determined by the sling manufacturer, or a qualifiedperson.
9-1.5.6
Other materials and configurations not covered bythis Chapter shall be rated in accordance with the recom-mendation of the sling manufacturer or a qualified per-son, and shall conform to all other provisions of thisChapter.
9-1.5.7
when components of the sling have a lower ratedload than the alloy chain with which it is being used,the sling shall be identified with a rated load consistentwith the lowest load rating of any of the components.
SECTION 9-1.6:PROOF TEST REQUIREMENTS9-1.6.1 General
Prior to initial use, all new and repaired chain andcomponents of an alloy steel chain sling. eitherindividually or as an assembly. shall be proof tested bythe sling manufacturer or a qualified person.
9-1.6.2 Proof Load Requirements
(a) For single- or multiple-leg slings, each leg shallbe proof loaded to a minimum of 2 times the single legvertical hitch rated load.
(b) The proof load for components attached to singlelegs shall be a minimum of 2 times the single-leg verticalhitch rated load.
(c) Master links for double-leg bridle slings,single-basket slings,and master coupling links connected totwo legs shall be proof loaded to a minimum of 4 timesthe single-leg vertical hitch rated load.
(d) Master links for triple- and quadruple-leg bridleslings and double basket bridle slings shall beproofloaded to a minimum of 6 times the single leg verticalhitch rated load.
SECTION 9-1.7:SLING IDENTIFICATION9-1.7.1 ldentification RequirementsEach sling shall be marked to show(a) name or trademark of manufacturer
9-1.7.2 Initial Sting ldentification
Sling identification shall be done by the slingmanufacturer.
9-1.7.3 Maintenance of Sling ldentification
Sling identification should be maintained by the userso as to be legible during the life of the sling-
9-1.7.4 Replacement of Sling ldentification
Replacement of the sling identification shall be consid-ered a repair as specified in paras.9-1.9.5(a) and (b).Additional proof testing is not required.
SECTION 9-1.8: EFFECTS OF ENVIRONMENT9-1.8.1 Temperature
Extreme temperatures will reduce the performance ofalloy steel chain slings. The sling manufacturer shouldbe consulted when the slings are to be used in tempera-tures of -40°F(-40°C) or below. Guidance for rated loadreductions for Grade 80 and Grade 100 alloy chain slingsused at or after exposure to temperatures above 400RF(205C) is given in Table 9-1.8.1-i.
9-1.8.2 Chemically Active Environments
The strength of alloy steel chain slings can bedegraded by chemically active environments.Thisincludes exposure to chemicals in the form of solids,liquids, gases, vapors, or fumes. The sling manufactureror qualified person should be consulted before slingsare used in chemically active environments.
SECTION 9-1.9: INSPECTION,REMOVAL,AND
REPAIR
9-1.9.1 Initial lnspection
Prior to use, all new,altered,modified, or repairedslings shall be inspected by a designated person to verifycompliance with the applicable provisions of thisChapter.
9-1.9.2 Frequent lnspection
(a) A visual inspection for damage shall be performedby the user or other designated person each day or shiftthe sling is used.
ASME B30.9:2010 pdf download
