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S-2.1, r. 14 - Regulation respecting occupational health and safety in mines
Section 311
Disposition versions
311. The installation of a drum hoist or an alteration made to such a hoist to increase the maximum suspended load may only be carried out where:
(1) the drum used with more than one layer of rope and with a diameter exceeding 1,550 mm (61 in) is equipped with grooving fitting the rope; however, during shaft sinking work, preparatory work or temporary work is in progress, the use of a plain drum hoist is authorized;
(2) the winding of the rope on the drum does not exceed 3 layers of superimposed turns when the drum is plain or there is spiral grooving and does not exceed 4 layers of superimposed turns when the grooving is parallel;
(3) the diameter of the drum complies with the standards prescribed in the following table when shaft sinking work, preparatory work or temporary work is in progress;
Diameter of rope Minimum diameter of
in drum in
millimetres (inches) millimetres (inches)
16 (0.6) 760 ( 29.9)
19 (0.7) 910 ( 35.8)
22 (0.9) 1,070 ( 42.1)
26 (1.0) 1,220 ( 48.0)
29 (1.1) 1,520 ( 59.8)
32 (1.3) 1,830 ( 72.0)
35 (1.4) 2,080 ( 81.9)
38 (1.5) 2,290 ( 90.2)
41 (1.6) 2,440 ( 96.1)
44 (1.7) 2,540 (100.0)
48 (1.9) 2,790 (109.8)
51 (2.0) 3,050 (120.1);
in drum in
millimetres (inches) millimetres (inches)
16 (0.6) 760 ( 29.9)
19 (0.7) 910 ( 35.8)
22 (0.9) 1,070 ( 42.1)
26 (1.0) 1,220 ( 48.0)
29 (1.1) 1,520 ( 59.8)
32 (1.3) 1,830 ( 72.0)
35 (1.4) 2,080 ( 81.9)
38 (1.5) 2,290 ( 90.2)
41 (1.6) 2,440 ( 96.1)
44 (1.7) 2,540 (100.0)
48 (1.9) 2,790 (109.8)
51 (2.0) 3,050 (120.1);
(4) the diameter of the drum complies with the standards prescribed in the following table for work other than work mentioned in subparagraph 3:
Diameter of rope Minimum diameter of
in drum in
millimetres (inches) millimetres (inches)
16 (0.6) 910 ( 35.8)
19 (0.7) 1,070 ( 42.1)
22 (0.9) 1,220 ( 48.0)
26 (1.0) 1,520 ( 59.8)
29 (1.1) 1,830 ( 72.0)
32 (1.3) 2,440 ( 96.1)
35 (1.4) 2,740 (107.9)
38 (1.5) 3,050 (120.1)
41 (1.6) 3,300 (129.9)
44 (1.7) 3,560 (140.2)
48 (1.9) 3,810 (150.0)
51 (2.0) 4,060 (159.8).
in drum in
millimetres (inches) millimetres (inches)
16 (0.6) 910 ( 35.8)
19 (0.7) 1,070 ( 42.1)
22 (0.9) 1,220 ( 48.0)
26 (1.0) 1,520 ( 59.8)
29 (1.1) 1,830 ( 72.0)
32 (1.3) 2,440 ( 96.1)
35 (1.4) 2,740 (107.9)
38 (1.5) 3,050 (120.1)
41 (1.6) 3,300 (129.9)
44 (1.7) 3,560 (140.2)
48 (1.9) 3,810 (150.0)
51 (2.0) 4,060 (159.8).
Subparagraph 2 of the first paragraph does not apply to shaft sinking work, where the maximum number of layers of rope shall be such that the distance between the flanges of the rope drum and the last layer of rope is at least twice the diameter of the rope.
