OHS Code Explanation Guide

Published Date: July 01, 2009
Bookmark this page

Part 25 Tools, Equipment and Machinery

Section 383 Sawmill log carriage

A log carriage is a framework, mounted on wheels, that runs on tracks or in grooves parallel to the face of the saw. Carriages also contain an apparatus that holds a log securely while advancing towards the saw.

A sawmill log carriage must have a substantial buffer stop at each end to limit travel. The carriage must have a safety device that keeps blocks not less than 30 millimetres from the saw. Each head block must be equipped with a dog and there must be sweepers at the front and back of the carriage to clear obstructions from the track.

The sawyer’s lever, operating the drive of the carriage, must be designed and constructed to operate in the opposite direction from the direction the carriage travels if the operator’s position with respect to the carriage could put the operator in danger.

This is applicable in cases where a sawyer is positioned parallel to the carriage track so that if he or she is struck by a broken limb or loses his or her footing, his or her forward motion will send the carriage away from the saw. If the mill is equipped with controls located at right angles to the carriage track, this provision is not required.

A security device holds the carriage tight to the track when the log turning device is in operation. Devices that turn logs on the carriage tend to exert a great deal of pressure.

Maintaining the carriage drive control mechanism and the log-turning control in neutral if the operator is not at the control may be done by using a specialized mechanical lockout device on the carriage and log turning controls.

For more information
Log Carriages/Carriages Runways