WAC 296-806-40506 Make sure safety guards meet specific requirements.

аааа You must:

аааа Х Make sure the machine safety guards meet the requirements of Table 405-1, Guard Requirements.

аааа Definition:

аааа Maximum exposure angle is the largest part of a wheel that does not need to be covered by a safety guard.

Note:	Х The maximum exposure angle is measured by lines starting at the center of the spindle and extending to the ends of the guard at the wheel periphery.
	Х Visors and other accessory equipment are used in determining the size of the guard opening only if they are at least as strong as the safety guard.

Table 405-1

Guard Requirements

Machine	Maximum exposure angle and other guard restrictions
Bench, pedestal, or floorstand grinders	Х Not higher than sixty-five degrees above the horizontal centerline of the wheel
	Х One-fourth (ninety degrees) of the wheel for grinding done at or above the horizontal centerline of the wheel
	Х One hundred twenty-five degrees if the work has to contact the wheel below the horizontal centerline of the wheel
Cylindrical grinders	Х One-half (one hundred eighty degrees) of the wheel
Cylindrical grinders	Х Not higher than sixty-five degrees above the horizontal centerline of the wheel
Surface grinders	Х One hundred fifty degrees of the wheel
Surface grinders	Х Not higher than fifteen degrees below the horizontal
Cutting-off machines	Х One-half (one hundred eighty degrees) of the wheel
Swing frame grinders	Х One-half (one hundred eighty degrees) of the wheel
Swing frame grinders	Х Encloses the top one-half of the wheel
Swing frame grinders using cup wheels	Х One-half (one hundred eighty degrees) of the wheel
Swing frame grinders using cup wheels	Х Covers the wheel on the side towards the operator
Semiautomatic snagging machines	Х One-half (one hundred eighty degrees) of the wheel
Semiautomatic snagging machines	Х Covers the wheel on the side towards the operator
Machines used for top grinding	ХAs small as possible up to one-sixth (sixty degrees) of the wheel

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. 04-14-028, з 296-806-40506, filed 6/29/04, effective 1/1/05.]