77. Compressed gas cylinders: All compressed gas cylinders shall:1° comply with the Act respecting pressure vessels (chapter A-20.01) and its regulations;
2° be kept away from any source of heat and not be exposed to temperatures in excess of 50 °C;
3° be used only for the purposes for which they were designed;
4° be handled in such a manner as not to damage them, and be fastened upright or held in a cart when in use;
5° be kept in an upright position with the valves facing upwards and be solidly held in place;
6° be equipped with a protective cap for the valves when not connected for use.