PDFWAC 296-54-57310
Logging machines—Chipping in woods locations.
In-woods chipping must be performed according to the following:
(1) Chipper access covers or doors remain closed until the drum or disc stops completely.
(2) Infeed and discharge ports are guarded to prevent contact with the disc, knives, or blower blades.
(3) The chipper is shut down and locked out according to the lockout/tagout requirements of chapter 296-803 WAC when an employee performs any servicing or maintenance.
(4) Detached trailer chippers are chocked when used on any slope where rolling or sliding of the chipper is reasonably foreseeable.