Section 1919.70 - General provisions(a) Certification of shore-based material handling devices shall conform to the requirements contained in this subpart, except in cases for which exemptions or variations have been granted by the Assistant Secretary as provided in §§ 1919.50(d) and 1919.60(a) .(b) Any replacements or repairs deemed necessary by the accredited person shall be carried out before application of a proof test.(c)Ton in this subpart means a ton of 2,000 pounds.(d) When applied to shore-based material handling devices, ratings may be stated in pounds rather than tons. When stated in tons of 2,000 pounds, this fact shall be indicated.