56.19130—Conveyance shaft test.
Before hoisting persons and to assure that the hoisting compartments are clear of obstructions, empty hoist conveyances shall be operated at least one round trip after:
(a)
Any hoist or shaft repairs or related equipment repairs that might restrict or obstruct conveyance clearance;
(b)
Any oversize or overweight material or equipment trips that might restrict or obstruct conveyance clearance;