2.9.2. Installation of guard-rails: Guard-rails must be placed on open sides of a floor, roof, platform, ramp, or scaffoldings or stairs around an excavation or any area from which workers may fall:
(1) into a dangerous liquid or substance;
(2) a vertical distance of 1.2 m or more where he uses a wheelbarrow or another vehicle; or
(3) a height greater than 3 m in other cases.
Despite the foregoing, such a guard-rail may be removed during work if it is a nuisance. In such a case, workers must wear a safety harness secured to an anchorage system by a fall arrest connecting device, the whole in accordance with sections 2.10.12 and 2.10.15. The work area must then be delimited in particular by a continuous barrier or trestles of a minimum height of 0.7 m, located at a distance varying between 0.9 m and 1.2 m from the place where workers are at risk of falling, or by a warning line complying with the requirements of section 18.104.22.168, so as to prevent access thereto by persons not working therein.
R.R.Q., 1981, c. S-2.1, r. 6, s. 2.9.2; O.C. 995-91, s. 2; O.C. 35-2001, s. 5; O.C. 606-2014, s. 4.