Chain Hoist Safety - February 20, 2014

Greetings from Gemini Energy Services! Here is the latest issue of our Bi-Weekly Safety Newsletter, and thank you for taking the time to check it out.

The wind industry is filled with hazards and the purpose of this newsletter is to share useful information, refresher training and safe work practices to our subscribers so that we can raise the bar for safety throughout the industry.  This week's topic focuses on Chain Hoist Safety.

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The Gemini Team

Steps to Take Before Rigging Loads 


In the wind industry and other industrial settings, equipment must be installed or removed to accommodate the facility's operation. Often riggers must be creative when rigging loads in tight quarters using chain hoist s.


If the proposal is to use existing slings, lifting eye, bolted swivel hoist ring, etc. for chain hoist connections prior to a load drifting activity a number of things should take place.

  1. Ensure that the facility has approved the rigging point of load based on the anticipated loading. Obtain the maximum allowable working load limit of equipment.
  2. Identify the proper connector for the load; slings, lifting eye, bolted swivel hoist ring, etc. Get a qualified engineer to approve the connector, and in the case of weldments get the details of the required material type, size, shape, thickness and shackle pin hole size and its location. If the desired connector is slings, lifting eye, bolted swivel hoist ring, etc. also get a listing of the engineer's minimum "removal criteria" based on wear, deformation and condition.
  3. Have a qualified rigger install the slings, lifting eye, bolted swivel hoist ring, etc. and inspect the slings, lifting eye, bolted swivel hoist ring, etc. using the recommended non-destructive examination method. A documented load test may be required.
  4. All slings, lifting eye, bolted swivel hoist ring, etc. should have manufactures stamp for its maximum rated capacity and angular limitations as provided by the manufacture and should be serial numbered so that it can be referenced on a site plan for original data, limitations and the name of the approving engineer. Maximum capacity and angular markings should be present on slings, lifting eye, bolted swivel hoist ring, etc. for future "quick reference" by all qualified rigging personnel.
  5. Inspect all rigging before and after use to ensure their integrity.

Chain hoist information can be obtained by reviewing ASME B30.16. This document can be obtained at



Gemini Energy Services is the premier independent service provider to the wind industry.  Safety is not just a philosophy at Gemini; it's our defining characteristic.  Whether Gemini technicians are driving to the project site or working on energized equipment in the hub, we strive for zero injuries.  Our proactive safety initiatives, which incorporate safety indoctrination, tailgate safety meetings, ongoing Personal Qualification Standards (PQS), a safety incentive program and completion of thorough Job Site Assessments, have resulted in an unblemished safety record.  We are confident that our colleagues in the wind industry share our commitment to safety and a zero-injury workplace.  


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