WAC 296-24-237   Construction, operation and maintenance -- Chain and electric hoists.  (1) Chain and electric hoists shall be of what is known as "all steel construction." No cast iron shall be used in parts subject to tension except drums, bearings or brake shoes.

     (2) The chains shall be made of the best quality steel or iron with welded links.

     (3) Chain and electric hoists shall have a factor of safety of at least five.

     (4) Chain and electric hoists shall be equipped with an approved device which will automatically lock the load when hoisting is stopped.

     (5) Electric hoists shall be provided with an approved limit stop to prevent the hoist block from traveling too far in case the operating handle is not released in time.



[Order 73-5, § 296-24-237, filed 5/9/73 and Order 73-4, § 296-24-237, filed 5/7/73.]