S-2.1, r. 13 - Regulation respecting occupational health and safety

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203. Spark shield: The spark shield is designed to prevent sparks and grinding wheel fragments from being projected outside the housing.
The gap between the spark shield and the grinding wheel shall be adjusted as the wheel wears down and this gap shall not exceed 5 mm with a 1 mm margin of error.
O.C. 885-2001, s. 203.