Section 0800-03-07-.21 - HOISTING CHAINS(1) Only roller chain made of high quality alloy, heat treated steel with the following characteristics will be acceptable.(d) Deep Case Hardening of Pins and Bushings(2) Suspension means shall not be less than two separate roller chains; each chain having a minimum tensile strength of 3,500 pounds.(3) The factor of safety of the suspension means shall be not less than seven.(4) All chains shall have not less than six inches of chain available beyond the normal stopping point when the car has reached its extreme limits of travel.(5) All chain ends must be fastened by standard master links as supplied by chain manufacturer.Tenn. Comp. R. & Regs. 0800-03-07-.21
Amendment filed July 24, 2000; effective November 28, 2000.Authority: T.C.A. Title 68, Chapter 121.