Proposed New ASTM Standard will promote crane safety.

Press Release Summary:

Proposed standard ASTM WK31972, Test Method for Mechanical and Electrical Testing of Insulating Links for Lifting Equipment, incorporates design proof test to verify that insulating link between hook and load line on cranes meets minimum specifications for which manufacturer has designed it. Additionally included, periodically performed test (by user or designated agent) ensures component continues to meet safety requirements once in use.

Original Press Release:

Proposed New ASTM Standard to Aid in Safety of Cranes

W. CONSHOHOCKEN, Pa.-Recent updates to crane and crane operator certification requirements in U.S. Occupational Safety and Health Administration standards have led to the launch of a proposed new ASTM standard, ASTM WK31972, Test Method for Mechanical and Electrical Testing of Insulating Links for Lifting Equipment.

The proposed new standard is being developed by Subcommittee F18.55 on Inspection and Nondestructive Test Methods for Aerial Devices, which is part of ASTM International Committee F18 on Electrical Protective Equipment for Workers.

"One of the changes [in the OSHA standards] is a requirement for the use of an insulating link between the hook and the load line on cranes used to lift and/or carry loads that are operating near high voltage lines," says William Veal, a retired fleet test coordinator, Georgia Power Co., and chairman, F18.55. "OSHA has asked for a standard that can be taken to a nationally recognized testing laboratory for design and proof testing."

Veal says the proposed standard incorporates a design test to verify that an insulating link meets the minimum specifications for which a manufacturer has designed it. In addition, ASTM WK31972 includes a proof test, usually performed by the manufacturer, to prove that the component meets the specifications for which it was ordered, and a periodic test performed by the user or designated agent to ensure that the component continues to meet safety requirements once it is in use.

According to Veal, the proposed standard will be used by national test laboratories, manufacturers and purchasers of insulating links, as well as by contractors performing routine dielectric tests. Interested parties are invited to participate in the work of F18.55.

ASTM International welcomes and encourages participation in the development of its standards. For more information on becoming an ASTM member, visit

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View this release on the ASTM Web site at

ASTM Committee F18 Next Meeting: April 10-13, 2011, April Committee Week, Anaheim, Calif.
Technical Contact: William Veal, Forsyth, Ga., Phone: 478-957-2250;
ASTM Staff Contact: Jeff Adkins, Phone: 610-832-9738;
ASTM PR Contact: Barbara Schindler, Phone: 610-832-9603;


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