S-2.1, r. 4 - Safety Code for the construction industry
3.13.3. Air piping: Connections for flexible piping sections through which compressed air circulates shall be equipped with one of the following devices:
(a) a chain or steel rope attached to each side of the connection;
(b) a self-locking device; or
(c) a locking device.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.13.3; O.C. 1959-86, s. 23; O.C. 1413-98, s. 20.