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

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8.3.11. When the concentration of vapours or flammable gases is greater than 25% of the lowest explosion limit, the work shall be stopped immediately in the affected zone and workers evacuated.
R.R.Q., 1981, c. S-2.1, r. 6, s. 8.3.11; O.C. 805-2020, s. 5.
8.3.11. When the concentration of flammable gas vapours is greater than 25% of the lowest explosion limit, the work shall be stopped immediately in the affected zone and workers evacuated.
R.R.Q., 1981, c. S-2.1, r. 6, s. 8.3.11.