Proof test for slings
For companies that utilize overhead cranes and lifting equipment in their daily operations, it is essential that each part of the machine stay in good working order. To increase the safety and productivity of this equipment, OSHA requires that all employers proof test any and all alloy steel chain slings and all of its components before putting it into use.
OSHA 1910.184(b), (e)(4), (e)(7)(i), (f)(4)(ii), (g)(2), (g)(5), (i)(8)(ii)
The following excerpt is taken directly from OSHA 1910.184*
- Proof test is a nondestructive tension test performed by the sling manufacturer or an equivalent entity to verify construction and workmanship of a sling.
Alloy steel chain slings proof testing
- The employer shall ensure that before use, each new, repaired, or reconditioned alloy steel chain sling, including all welded components in the sling assembly, shall be proof tested by the sling manufacturer or equivalent entity, in accordance with paragraph 5.2 of the American Society of Testing and Materials Specification A391-65, which is incorporated by reference as specified in §1910.6 (ANSI G61.1-1968). The employer shall retain a certificate of the proof test and shall make it available for examination.
Repairing and reconditioning alloy steel chain slings
- Worn or damaged alloy steel chain slings or attachments shall not be used until repaired. When welding or heat testing is performed, slings shall not be used unless repaired, reconditioned and proof tested by the sling manufacturer or an equivalent entity.
Wire rope slings end attachments
- All welded end attachments shall not be used unless proof tested by the manufacturer or equivalent entity at twice their rated capacity prior to initial use. The employer shall retain a certificate of the proof test, and make it available for examination.
Metal mesh slings handles
- Handles shall have a rated capacity at least equal to the metal fabric and exhibit no deformation after proof testing.
Metal mesh sling testing
- All new and repaired metal mesh slings, including handles, shall not be used unless proof tested by the manufacturer or equivalent entity at a minimum of 1/⁄2 times their rated capacity. Elastomer impregnated slings shall be proof tested before coating.
Synthetic web sling repairs
- Each repaired sling shall be proof tested by the manufacturer or equivalent entity to twice the rated capacity prior to its return to service. The employer shall retain a certificate of the proof test and make it available for examination.
For the safety and overall performance of your facility, each alloy steel chain sling should be tested before it is used in any operations. It is important that each sling is properly tested, inspected and maintained by a reputable service provider. Konecranes inspectors and technicians can inspect the slings and other rigging equipment in your facility to determine if it meets OSHA standards.
The Konecranes Slings and Accessories Inspection checks non-maintainable load lifting attachments and accessories to identify deficiencies and deviations from local statutory safety and health regulations. The inspection service utilizes radio frequency identification (RFID) tags to record load lifting attachment inspection data and a smartphone app to help quickly and reliably identify attachments.
*The foregoing OSHA regulations are not intended to be a comprehensive overview of all applicable regulations pertaining to the designated topic. State laws may mandate different safety and maintenance standards. Accordingly, please consult applicable state laws as well as original equipment manufacturer specifications for further guidance. The statements and descriptions contained herein constitute the opinion/recommendation of the seller and are not intended to create any express warranties.