S-2.1, r. 14 - Regulation respecting occupational health and safety in mines

Section 66 Disposition versions

2012-09-01

66. In an open-pit mine, at least one walkway giving access to each work level shall be laid out and maintained in accordance with the following standards:

(1)  stairways or ladderways shall be installed where the walkway is inclined at more than 30º from the horizontal and where the angle is 50º or greater, only ladders may be installed;

(2)  the ladderways shall:

(a)  be firmly fixed in place by at least 2 independent supports;

(b)  be inclined at less than 70º from the horizontal;

(c)  contain rest landings with railings at least every 6 m (19.7 ft);

(3)  the stairways shall:

(a)  have uniform steps in each flight;

(b)  have non-skid steps of a depth exceeding 150 mm (5.9 in);

(c)  have firmly fixed railings on sides where there is a risk of falling;

(d)  have a handrail on at least one side;

(4)  the stairways and rest landings shall be designed and built to carry a live load of 4.8 kN/m2 (100.2 lb/ft2);

(5)  the railings shall:

(a)  be at least 1 m (3.3 ft) in height;

(b)  be designed and built to withstand a concentrated horizontal force of at least 900 N (202.3 lb) applied to any point on the upper rail and a concentrated force of at least 450 N (101.2 lb) applied to any point on the upper rail;

(c)  have an upper rail placed between 900 mm (35.4 in) and 1,100 mm (43.3 in) above the floor and an intermediate rail fixed midway between the upper rail and the floor.

O.C. 213-93, s. 66; O.C. 1326-95, s. 17.