S-2.1, r. 4 - Safety Code for the construction industry
3.9.12. Inspection: Scaffoldings shall be inspected by a qualified person:
(a) at least once every 3 months;
(b) following any failure of the material;
(c) after any abnormal pressure or any incident which might have adversely affected the structure; and
(d) when re-used after any lengthy work interruption.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.9.12.