S-2.1, r. 4 - Safety Code for the construction industry

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3.14.5. A welding torch using oxygen and a combustible gas shall be equipped with a gas-check valve and with a flame arrester at the combustible gas supply point and the oxygen supply point located in the torch handle.
O.C. 329-94, s. 61; O.C. 1413-98, s. 23.