WAC 296-806-40504   Make sure machines have safety guards.       You must:

     • Use abrasive wheels only on machines that have safety guards.

     • Make sure the safety guard:

     – Is mounted so it maintains proper alignment with the wheel.

     – Is mounted with fasteners strong enough to keep the guard in position if a wheel breaks.

     – Covers the spindle end, nut, and flange projections.

Exemption:	Safety guards are not required on machines that use:
	• Wheels for internal grinding while advancing, retracting or within the work.
	• Types 16, 17, 18, 18R, and 19 cones and plugs and threaded hole pot balls where either:
	– The work offers protection;
	OR
	– The size does not exceed three inches in diameter by five inches long.
	• Notched, segmented, or continuous rim metal centered diamond lapidary wheels that are:
	– Used with a coolant deflector;
	AND
	– Operated at 3,500 SFPM or less.
	• Type 1 reinforced wheels that are:
	– Three inches or less in diameter.
	– One-fourth inch or less thick.
	– Operating at peripheral speeds of 9,500 SFPM or less.
	– Used by operators wearing safety glasses and face shields.
	• Valve seating grinding wheels.
	• Remotely operated machines in an enclosure that will retain the pieces of a broken wheel.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. 04-14-028, § 296-806-40504, filed 6/29/04, effective 1/1/05.]