Haidar et al. The main purpose of using a material handling system is to ensure that the material in the right amount is Due to improved e ciencies after maintenance and overhauls, the operating costs of the equip- A multitude of varying factors exist for every project and owner, including but not limited to: Every project is different, and equipment-selection aspects for evaluation must be specifically developed to meet each project’s unique needs and complexity. In multistorey plants, material is lifted up and transported by lifts. Essays, Research Papers and Articles on Business Management, Essay on Material Handling | Industries | Production Management, Material Handling: Definition, Factors and Factors | Industries, Capital Structure of a Firm: Meaning, Essentials and Factors. They are not, as a rule, experts on any particular type of machinery. equipment that is highly automated. Conveyors are more suitable for mass production on fixed routes and powered trucks for batch production; because conveyors though costly, can handle more volume of production per unit time as compared to trucks, whereas a truck is more flexible equipment. Thanks for visiting my selection criteria examples page. Components, worn out and beyond repair like belts, bearings, packings, oil seals, rollers, drums, fasteners, and couplings are replaced. A little periodic inspection and minor adjustments may be enough to prevent equipment breakdown. It is on wheels and can be moved at the place of use. In other words, there is an art and science to defining and evaluating key aspects in order to choose the proper equipment. The mechanism of transporting the materials in a drag conveyor can be a screw (as in automatic feed in poultry farms), a pusher bar, a scraper (for moving granular or powder materials) or an overhead endless chain along a fixed path. It finds applications in wire drawing and many other factories employing chemical cleaning of material, etc. The economics of equipment selection and replacement issues are dealt with in detail in later parts. Office Requirements: The selection of office machines and equipment must be … Let process drive equipment selection, not the other way round.. Map the process without worrying about equipment, let the optimum process drive the equipment selection. Instead, they should be distilled into needs and evaluated as key aspects in equipment selection. In this system, big metal containers have number of small products filled in them. Diagnostic testing has become indispensable for diagnosing and monitoring disease, for providing prognoses and for predicting treatment responses.1,2 Today, over 40 000 products are available globally for the in vitro diagnostic testing of a wide range of conditions.3 These include traditional laboratory-based tests, with samples being sent to a central laboratory for analysis, and point-of-care tests, which can be performed near, or at, the point of patient care. The engineer must have a good grasp of these aspects for equipment selection in the factors of their evaluation. REQUIREMENTS & CRITERIA FOR SELECTION Quantity, Types and Quality . The former part involves procedures In circumstances where others will be procuring, if options between equipment choices will still be made, it is important to rank two to five of the highest evaluated equipment, with short comments why. Maintenance of Material Handling Equipments 3. By using available machines (like one for strapping steel strips around cotton bales), fork lift trucks, skids and pallets (see Fig. Similarly, a separate ground in the same conduit as the power conductors provides a better ground return path than a ground path via the equipment or building steel. Chain conveyors are used in refrigeration industries for painting and plating of the refrigerator shells. For speedy and economic construction of a project, proper choice of equipment is of preliminary importance for civil engineers. Chutes generally feed parts (which they receive from, say sheet metal presses) to the conveyor which takes the parts to their destination. Naturally, the best equipment will be one which permits smooth and continuous production flow, involves less accidents, reduces production cycle time, promotes better working conditions, incurs less fatigue to the operators and brings down the total material handling costs. Privacy Policy 9. 25.3) the forks are attached to a column on the truck. Roller conveyors may be gravity aided or powered and are employed for transporting products having flat bottoms. Seth Pearce is director of design and development for Southland Energy, a division of Southland Industries. The system is much safer and involves a lot of saving. Rollers and belts are checked, adjusted^ repaired. Special Equipment. Gravity conveyor is easy to set up as it does not involve any power drive. Terms of Service 7. Both the right and left brain will be activated to achieve both the art and science of evaluating abstract conditions and technical applications. If the bearer of a hotel removes cups, plates and other crockery from a table by placing them in a tray, it is called material handling by unit loads. Their research work identified performance measure, technical, economic and strategic aspects as the evaluation criteria. The selection of equipment and design of the MHS can be done using four ways: by means of a traditional selection method, using an analytical model, by knowledge-based approaches, Hybrid approaches (analytical and knowledge based approaches). 25.35). Content Guidelines 2. The most advanced equipment is not a need, but quality is—and, unfortunately, sometimes top name brands include cheaper heat-transfer materials, unreliable bearings, or statistical quality control rather than start-up and test-inspection techniques. Uploader Agreement. Definitely, he would have spent much more time and efforts in removing all the crockery by one cup or one plate at a time. Different machines have different outputs per unit time. Compounding this, over the past 15 years, a strong increase in customer needs related to best-value considerations, such as risk, aesthetics, longevity, maintenance, and efficiency, have added complexity to the determinants that need to be evaluated in equipment selection. SESSION OBJECTIVES After the end of the session one should be able to understand the what is operating equipment, its requirements & criteria for selection. One factor in the Selection of branded equipment is the availability of replacement parts. 2.3 Insulation and finish covering Selection Criteria Examples. CONVEYORS are employed to transport materials, over a fixed path which may be horizontal or inclined (up or down), to different locations in a factory. The single greatest pressure on any evaluation is typically cost, and more commonly first cost.The first cost is comprised of the capital costs to design, furnish, and install a specific piece of equipment, and it is affected by project speed. To be assured that you are getting the best deal, you need to ask for more than one bid. The type of explosion protection of the equipment is to be suitable for the zone of use. When responding to selection criteria, answer each criterion in your own words, detailing your daily activities, skills and strengths in a clear, comprehensive and professional manner. Buckets or trays can be mounted on the endless chain running from the ground floor to the top floor. The selection and application of a cable system should be based on correct selection of the type of cable arrangement required for the purpose. The repairable parts of the system, after inspection are corrected for small repairs and minor defects are rectified. Gases, vapours, mists and dusts can all form explosive atmospheres with air. Report a Violation 11. 2. The conveyor system is completely dismantled. Overhauling involves dismantling the complete-mechanism and replacing all dam­aged components. Before buying cleaning equipment for the staff the Executive Housekeeper / AEHK should as for a product demonstration. The proper maintenance of material handling equipment is extremely essential for preventing the occurrence of bottlenecks or points of congestions. Bigger jobs can be handled as they are, whereas small items are put in boxes, tins or pallets before being transferred. A wide variety of material handling equipment is in the market; some equipment are for general purpose use and others are of special purpose use. Before uploading and sharing your knowledge on this site, please read the following pages: 1. The crane hook can move in a rectangular area (overhead bridge crane) or a circular area (jib crane). Assign annual occurrences, such as large overhauls or other anticipated repairs or replacements. Packages of hosiery goods, steel sheets, etc., can be transferred using gravity conveyors. Three stages of preventive maintenance are: The maintenance system for a few material handling equipment like cranes, hoists, and conveyors has been discussed below: All parts, open or covered are inspected for wear and tear. This principle of unit load can also be explained like this. It requires financial sensitivity and analysis. Crane structure, buffers, rails, open gear transmission, pulley blocks, etc., may be replaced and various sub-mechanisms may be aligned and adjusted. Once a conclusion is reached on a particular equipment selection, document a summary of the evaluation, the peer contenders, and three reasons the selected equipment was chosen. Materials and Process Selection for Engineering Design: Mahmoud Farag 13. Once identified from the project needs, key aspects an engineer should evaluate in equipment selection can be summarized in the simple math of weighted scoring, then mapped to money in LCCA, and reinforced for posterity in logic statements. Depending upon the types of items to be transferred, a suitable pallet can be designed. Selection of Material Handling Equipment 2. Structures, safety guards, etc., may be repaired as per their conditions. Material handling system can be defined as movement, handling, storage and controlling of materials throughout the manufacturing process. In many instances, an owner structures and selects engineering firms, architects, and contractors to satisfy first cost. SELECTION OF EQUIPMENT . Preventive maintenance also includes lubrication, adjustment, or repair while the equipment is still in a minor stage of defect. A total cost-of-ownership approach that identifies needs and assigns values to be evaluated can balance the limitations of first-cost considerations on total comfort, satisfaction, and long-term costs. By preventive maintenance, the equipment can be kept running thereby minimizing costly interruptions in the production schedule. Classification. Belts or rollers are inspected for tensions and wear and tear. In this role, he helps to de­velop and implement solutions to conserve energy, waste, and water; integrate gener­ation; and incorporate renewable energy. Every material handling equipment possesses certain characteristics with respect to: In FORK LIFT TRUCK (see Fig. Production line flow can be maintained only if the material handling equipment is in the proper working order. Besides, the resale value, the replacement costs of existing equipment, and the salvage value associated with the equipment are also important. It can be as simple or complex as necessary, but regardless, it must be comprehensive. Most of all, a good foundation in engineering is needed, along with common sense and the ability to understand how important these nuanced selections are to achieve many years of comfort, safety, and performance. evaluation criteria for the selection of material handling equipment. The Handbook of Chemical Process Equipment is a major reference on process equipment. They are as follows: Once prioritized, these rank as inexpensive, cool, quiet, efficient, low-maintenance, and unobtrusive. Characteristics 4. Equipment selection for a hard-rock mine typically begins with or soon after the planning parameters of the stoping operation is completed; therefore, equipment used for stoping should be suitably sized for the stope dimensions and the characteristics of the orebody. The selection of materials handling equipment requires the attaining of proper balance between the production problem, the capabilities of the equipment available, and the human element involved. In a belt conveyor, the belt may be flat or of trough shape to hold (granular) materials which may tend to fall from the flat belt. Anne Bradley, Julia Janaro and Megan Chorley. Prohibited Content 3. Preliminary Selection Considerations. They transfer small jobs which can slide down under gravity. A textured, non-slip material such as silicone, for example, makes the handles of peelers, whisks and knives easier to grip with wet hands. Account Disable 12. Containerization uses principle of unit load. Initial screening of solutions IV Case study 9.1-Selecting a beam material for minimum cost II 25.10) consists of overhead mounted endless chain. Material is loaded in the trailers (CH: 1, 2, 4, 6, 9, 14) which are attached to the towing tractor. Principle of Unit Load and Concept of Containerization and Palletization: It is easier and faster to move hundred small parts say castings or cardboard sheets by grouping them in one unit than moving them individually one by One. The type of production affects to a large extent the selection of the material handling equipment. Not absolutely, but relatively to a point. The time duration between two stages say (c) or (d) and (e) may range from 1 month to 6 months or even more, depending upon the type of material handling equipment and the time for which it has been used. They prove economical if the flow of material is continuous. The material can be loaded in the trays automatically. An interesting paradigm exists when defining the aspects that should be evaluated in equipment selection. Further, the selection of equipment may be governed by the availability or non-availability of trained manpower. For example, low ceiling heights may not permit stacking of palletized materials, weak roofs limit the use of overhead conveyors and steps between two floors will not allow trucks to operate. The arrangement is such that the lifting mechanism (may be an electromagnet or a hook) lowers down for loading and unloading of the products. 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