Saturday, May 24, 2014

The Nuts And Bolts Of Materials Handling

By Henry A. Parker


INTRODUCTION Material handling is a manufacturing term relating to moving, storing, protecting and controlling of raw materials, goods and products. Material is handled as it is cleaned, prepared, manufactured and consumed while refuse is disposed. The types of equipment used in the materials handling process includes systems for storage and engineering. It also includes industrial trucks, conveyors, on-rails transfer carts and cantilevered crane loading platforms.

STORAGE AND HANDLING EQUIPMENT This topic generally refers to non-automated apparatus and includes things like pallets, racking, shelving, carts, cages, etc. Interestingly, these items are collectively referred to as catalog items because they have universally accepted standards and are sold as stock materials out of catalogs. For example, pallets are a widely used commodity with basically the same size and shape all over the world.

PALLETS Practically any manufactured item you could mention, from cupcakes to casks of beer, from telephones to toilet paper, spends at least part of its life cycle strapped to a pallet. Mostly, these are made of wood, although there are also requirements for pallets made of steel or other materials.

ENGINEERED SYSTEMS Unlike catalog products, engineered systems are custom-designed and built. This category of manufacturing equipment includes conveyors, robots and automated storage and retrieval systems (AS/RS). Care must be taken when designing and handling engineered systems that are destined to handle edible products in order to avoid contamination.

INDUSTRIAL TRUCKS These include tow tractors, stock chasers and the ubiquitous forklift, or powered industrial truck. Under the heading of forklifts are dozens of different types of machines, depending on how they are powered, where they are used, what type of tires they are fitted with, etc. All industrial trucks may be fitted with special attachments that makes them infinitely versatile.

ON-RAIL TRANSFER CARTS These are used to carry bulk materials in the heavier industries. They are used in the mining industry, in heavy manufacturing and in metallurgy.

SAFETY Emphasis is placed on occupational health and safety in this aspect of manufacturing. Forklifts, in particular, and have an abominable safety record. For this reason, OSHA regulations particularly stringent, especially with regard to training. Any employer found to have untrained operators on his site is subject to fines that may run into the tends of thousands of dollars. Forklift training procedures have been streamlined so that most of the education may be conducted online. There is still an element of hands-on training and operators must be fully certified on the workplace environment and on the specific type of truck they will be operating.




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