S-2.1, r. 14 - Regulation respecting occupational health and safety in mines

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381. A compressed air tank shall be equipped with a relief valve at its lowest point.
Where the volume of the compressed air tank is greater than 1.5 m3 (53 ft3), the tank shall be drained at least once every 24 hours of use.
O.C. 213-93, s. 381; O.C. 1326-95, s. 71.