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WACs > Title 296 > Chapter 296-806 > Section 296-806-40506











296-806-40504    

296-806-40508







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WAC 296-806-40506









Make sure safety guards meet specific requirements.









You must:
• Make sure the machine safety guards meet the requirements of Table 405-1, Guard Requirements.
Definition:
Maximum exposure angle is the largest part of a wheel that does not need to be covered by a safety guard.

Note:
• 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.

 
• 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 • Not higher than sixty-five degrees above the horizontal centerline of the wheel

• One-fourth (ninety degrees) of the wheel for grinding done at or above the horizontal centerline of the wheel

• One hundred twenty-five degrees if the work has to contact the wheel below the horizontal centerline of the wheel

Cylindrical grinders • One-half (one hundred eighty degrees) of the wheel

• Not higher than sixty-five degrees above the horizontal centerline of the wheel

Surface grinders • One hundred fifty degrees of the wheel

• Not higher than fifteen degrees below the horizontal

Cutting-off machines • One-half (one hundred eighty degrees) of the wheel

Swing frame grinders • One-half (one hundred eighty degrees) of the wheel

• Encloses the top one-half of the wheel

Swing frame grinders using cup wheels • One-half (one hundred eighty degrees) of the wheel

• Covers the wheel on the side towards the operator

Semiautomatic snagging machines • One-half (one hundred eighty degrees) of the wheel

• Covers the wheel on the side towards the operator

Machines used for top grinding •As 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. WSR 04-14-028, § 296-806-40506, filed 6/29/04, effective 1/1/05.]