Aggregates Manager Digital Magazine
Issue link: https://read.dmtmag.com/i/85652
SAFETY WATCH Solid Blocking Tackle safety risks by properly blocking equipment and machinery from motion. compiled by Therese Dunphy, Editor-in-Chief From 2000 to 2009, there were 23 fatalities in metal/non- metal mines due to failure to block against motion. These accidents occurred in both surface and underground mines. Miners were fatally injured when performing maintenance without first blocking machinery or equipment against motion, allowing a component to fall or lower unexpected- ly; when using inadequate materials for blocking; and when failing to block components of process equipment against movement during repair. Failure-to-block citations are perennially among the frequently cited violations of Mine Safety and Health Administration (MSHA) standards. Risk assessment — studying the task at hand and asking what potential outcomes may be — is a necessary part of safe work practices. Consider the following recommendations for proper blocking. Best practices Make sure those around you know your intentions. bottom layer of blocks or jack stands will lie in a flat, level area. The accident: with 12 years of mining experience was fatally injured at a sand and gravel mine when he and other employees were preparing to repair the transmission on a dragline. While the cab was being removed, it tipped and pinned him between the cab and the handrail on the walkway. nents being supported to avoid crushing the blocks and to increase stability. ensure they remain solid, without any tilting or sliding. or jack stands are fully loaded and equipment stability has been verified. AM Information from this Safety Watch is from an actual accident and is provided by the Mine Safety and Health AGGREGATES MANAGER June 2012 Administration. It is meant for general information purposes only. Sponsored by The bottom line: The accident occurred because pro- cedures were not established to block the operator's cab on the dragline against hazardous motion prior to removal of the cab mounting bolts. and share with your plant personnel Tear this out