M-6, r. 1 - Regulation respecting stationary enginemen

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27. No supervision is required for the following stationary engines:
(a)  refrigerating apparatus operating by absorption;
(b)  residential refrigerating apparatus;
(c)  small conditioning units, window types;
(d)  internal combustion engines.
R.R.Q., 1981, c. M-6, r. 1, s. 27.