Michigan Administrative Code
Department - Labor and Economic Opportunity
MIOSHA
General Industry and Construction Safety and Occupational Health Standards
Construction Safety and Health Standard
Part 7 - WELDING AND CUTTING GENERAL PROVISIONS
HOSES AND REGULATORS
Section R. 408.40731 - Hoses and connections

(1) Hose and hose connections used for a welding operation shall be as prescribed in paragraph 3.5.6 of the American National Standard Institute Standard ANSI/AWS Z49.1, "Safety in Welding and Cutting and Allied Processes," 1973 edition, which is adopted by reference in R 408.40709.

(2) Parallel lengths of hose taped together shall have not more than 4 inches out of each 12 inches covered by tape.

(3) Parallel hoses shall be color coded as follows:

(4) The employer shall assure that only approved hose is used for LP gas.

(5) A hose and its connections shall be inspected before each shift for burns, leaks, worn places, or other defects which could affect the safety of an employee. Suspected leaks shall be checked by use of a grease-free soap solution.

(6) A defective hose shall not be used, but shall be repaired or replaced.

(7) A hose that has been subject to a flashback or has been repaired or spliced shall be tested at twice the normal pressure, but not less than 300 psig.

(8) A box used for the storage of gas hose shall be ventilated.