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SELECTION OF EQUIPMENT . Selection of Material Handling Equipment 2. Privacy Policy 9. 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). An example can be illustrated in three owner "wants": a cutting-edge working environment, budget conformity, and reasonable operating costs. Chutes have sheet metal or roller base for transferring components down the incline. Structures, safety guards, etc., may be repaired as per their conditions. Select realistic escalation rates for energy, labor, or equipment. While inexpensive is a want, the first cost or perhaps total cost of ownership is the need. Engine drive and are generally used for outdoor applications. TYPES OF CONSTRUCTION EQUIPMENTS AND THEIR SELECTION CRITERIA:- For the selection criteria of construction equipment there are many types of equipment which are completely describe below. Preliminary Selection Considerations. So would noise criterion levels or minimal interruption of the benefitted space trump costs? This transforms subjective qualities of a project’s needs to numerical analysis, considered the "art" of the process. Further, the selection of equipment may be governed by the availability or non-availability of trained manpower. The Handbook of Chemical Process Equipment is a major reference on process equipment. Difficulty can arise when these wants are discussed and prioritized against the needs identified to drive evaluation aspects. Trailers can either be uncoupled from the tractor train, or the material loaded in them can be dumped out, at respective stations. In this system, big metal containers have number of small products filled in them. In multistorey plants, material is lifted up and transported by lifts. An interesting paradigm exists when defining the aspects that should be evaluated in equipment selection. Those needs must be emphasized and prioritized as necessary for evaluation in equipment selection. The former part involves procedures The main purpose of using a material handling system is to ensure that the material in the right amount is Once prioritized, these rank as inexpensive, cool, quiet, efficient, low-maintenance, and unobtrusive. To be assured that you are getting the best deal, you need to ask for more than one bid. Use the process to drive the building blocks. The belt material maybe rubber covered canvas, steel, plain fabric or woven wire (high temperature use). Reviewing a significant list of evaluation criteria also enhances creative thinking and ensures selected equipment does not have a fatal failure for critical considerations not reviewed in a purely limited evaluation. In a jib crane the hoist unit may be mounted on an I-section jib which is in turn supported on a column. HAZARDOUS AREA ZONES AND EQUIPMENT CATEGORIES Overview . For speedy and economic construction of a project, proper choice of equipment is of preliminary importance for civil engineers. The design engineer should identify as many aspects that should be evaluated as possible, but only evaluate a dozen or fewer factors in equipment selection. The material can be transferred from one place to another along the beam. The material can be loaded in the trays automatically. Preventive maintenance consists of frequent inspections and examination of the material handling equipment, with special attention to the components requiring it. Preventive maintenance also includes lubrication, adjustment, or repair while the equipment is still in a minor stage of defect. A gantry crane acts as an auxiliary to bridge crane. Preventive maintenance is by far one of the best maintenance techniques suggested for material handling equipment. In selection, engineers must find the least expensive equipment that will be cool and quiet enough; but once satisfied, every additional dollar for extra cooling or added quiet is a luxury. Disclaimer 8. To provide maximum value to customers, mechanical engineers must have a strong understanding of owners’ needs and the ability to evaluate key aspects of mechanical system selection to meet those needs. It is a fast and flexible equipment for floor to floor travel. Their research work identified performance measure, technical, economic and strategic aspects as the evaluation criteria. A fixed conveyor is used on the mass production shop floor whereas portable conveyors are preferred for intermittent jobs like unloading of a freight car, etc. evaluation criteria for the selection of material handling equipment. Production line flow can be maintained only if the material handling equipment is in the proper working order. Maintenance of Material Handling Equipments 3. The ultimate aim is to arrive at the lowest cost per unit of material handled. The aim is to uncover conditions leading to breakdown or harmful depreciation. The biggest difficulty in evaluating so many characteristics in complex projects is the overwhelming degrees of freedom. Tractors, three wheeled or four wheeled (CH: 1, 2, 4, 6, 9, 12, 15, 16) employ I.C. Worn out or unworkable components like wire ropes, wheels, bearings, bolts, etc., are removed. The typical pattern involves building owners and/or end users simply expressing their "wants," from robust to redundant to inexpensive. However, additional benefits in efficiency and low maintenance, even at the expense of low cost, can be evaluated to find an ideal cost/benefit ratio. It requires an engineer to communicate efficiently and reinforce conclusions, and should result in ongoing collaboration with the owner to ensure desired attributes are captured. Of those, five are subjective and one is objective because inexpensive typically correlates to a number. 5.2.3 Equipment selection. Engineers are the subject matter experts that select based on the criterion to be evaluated, not only first cost. Therefore, there is no better arbitrator than the engineer to educate, evaluate, and recommend the selection of equipment that considers all aspects rather than only first cost. An engineer can consider abstract wants and distill those into concrete needs, which are prioritized with weighting and used in a scorecard for equipment selection. One challenge is identifying aspects for consideration. 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. 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. Chutes generally feed parts (which they receive from, say sheet metal presses) to the conveyor which takes the parts to their destination. These containers are placed on the truck or in the trailers which are pulled by tractors or trucks. Replacement of Parts. Thanks for visiting my selection criteria examples page. Crane structure, buffers, rails, open gear transmission, pulley blocks, etc., may be replaced and various sub-mechanisms may be aligned and adjusted. Different machines have different outputs per unit time. Components, worn out and beyond repair like belts, bearings, packings, oil seals, rollers, drums, fasteners, and couplings are replaced. Selection Criteria Examples. Maintenance of Material Handling Equipments 3. Industrial Engineering, Industries, Material Handling, Material Handling Equipment, Production. 25.3) the forks are attached to a column on the truck. Safety First. must be blended into the overall plan, with the ultimate objective of maximizing the productivity of each machine and minimizing handling. In another application a telescopic mast (pole) may join its upper end with the overhead chain conveyor and the lower end with a trolley; so that as the endless chain moves, the trolley (with the material in it) also moves in the direction in which chain travels. Belts or rollers are inspected for tensions and wear and tear. Work equipment must be suitable for the purpose for which it is used or provided, and used only for operations for which it is suitable. The main factors for evaluation can vary from a half dozen to hundreds. The economic considerations such as owning costs, operating labour costs and operating fuel costs of equipment are most important in selection of equipment. They provide overhead movements. In addition, versatility of the equipment whether it can perform more than one function, the adaptability for future use and the interaction with other equipment also affect the selection of CE. Comparing alternative LCCAs for different potential equipment pieces is fast and routine, but the output is very telling. Characteristics 4. Brand equity is not so much a need as it is a method of ensuring a reputable warranty, parts availability, proven application, and a wide field of technicians able to service the equipment. The following factors may be considered while selecting a material handling equipment: The size of material, its shape, weight, delicacy, nature (solid, liquid, gas) and its chances of getting damaged during handling, etc., should be considered. They prove economical if the flow of material is continuous. Choose a realistic discount rate, relative to the owner’s approximate return on investment or cost of money. Safety trumps style in the kitchen environment, so look for equipment that anticipates danger, then offers a solution. Belt conveyors are substituted for roller conveyors when the parts are small and are required to be transferred separately, from one station to another. 3.1 Criteria for all types of equipment Core criteria SUBJECT MATTER Purchase of electrical and electronic equipment used in the health care sector with reduced environmental impact. Initial screening of solutions IV Case study 9.1-Selecting a beam material for minimum cost II Items like refrigerators, air-conditioners or televisions can be sent to distant places using the principle of containerization. After reading this article you will learn about:- 1. When buying equipment, spare parts must be readily available or could be easily purchased. Demand drives innovation. Content Guidelines 2. 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 perform this, engineers must be able to specify the best equipment for a design as well as be subject matter experts on constructibility, operations, maintenance, human behavior, economics, and manufacturing. Unless a brand new plant is being designed, users decide to replace a pump because of its age and wear or persistent reliability issues. 1. Material is loaded in the trailers (CH: 1, 2, 4, 6, 9, 14) which are attached to the towing tractor. Roller conveyors may be gravity aided or powered and are employed for transporting products having flat bottoms. The chain has chain links which push the material forward. The economics of equipment selection and replacement issues are dealt with in detail in later parts. Point-of-care testing can help optimize treatmen… MONORAIL is an I-section beam attached to the ceiling and having either a trolley or carrier moving along it. Plant engineers typically spend their time with the process to make sure machinery is working, water is flowing, power is produced, lights are up and no environmental problems are developing. Chemicals management system The tenderer shall have a chemicals management system in place with dedicated resources, the Due to improved e ciencies after maintenance and overhauls, the operating costs of the equip- Before buying cleaning equipment for the staff the Executive Housekeeper / AEHK should as for a product demonstration. Account Disable 12. A chain conveyor (Fig. Image Guidelines 4. Report a Violation 11. 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. An overhead bridge crane finds applications in most of the industries, making engines, compressors, pressure vessels, foundries, steel mills, etc. Hazardous area classification is used to identify places where, because of the potential for an explosive atmosphere, on them and the material can be stacked at the proper place, even very close to the roof. Packages of hosiery goods, steel sheets, etc., can be transferred using gravity conveyors. EQUIPMENT RELIABILITY Reliability of the equipment and supplier reputation and the after sale service also plays an important role in selecting material handling equipments. Plagiarism Prevention 5. Chain conveyors are used in refrigeration industries for painting and plating of the refrigerator shells. The selection of measuring equipment or instrument is based on the characteristics, tolerances, and datums of the part to be measured. It is on wheels and can be moved at the place of use. Core aspects exist that often are purely technical variables that require evaluation and satisfaction. It is the responsibility of the EHK to procure the ideal, most efficient equipment for her staff to ensure maximum productivity. Creating the roadmap for equipment evaluation. Instead, they should be distilled into needs and evaluated as key aspects in equipment selection. Haidar et al. Afterwards, the containers can be loaded on railway trailers and can be taken to places from where, with the help of cranes, they can be shipped. […] 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. It provides practical understanding and description of the working principles, intended applications, selection criteria and fundamental design principles for equipment used throughout the process and allied chemical industries. A bucket conveyor moves the granular materials or powder or liquid. The repairable parts of the system, after inspection are corrected for small repairs and minor defects are rectified. Copyright 10. In this role, he helps to de­velop and implement solutions to conserve energy, waste, and water; integrate gener­ation; and incorporate renewable energy. 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. A jib crane is preferred where lifting of the jobs is required in a few locations only or where bridge crane cannot be erected; for example, outside near the wall of the building. Criteria for hearing protectors with good signal and speech audibility in general To find a simple criterion for selection of hearing protectors which perform well with regard to “signal audibility (general)”, “speech intelligibility”, and “perception of informative operating sound” the BIA explored several options using the BIA’s European hearing-protector database. 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. They are not, as a rule, experts on any particular type of machinery. Huge Collection of Essays, Research Papers and Articles on Business Management shared by visitors and users like you. 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. The arrangement is such that the lifting mechanism (may be an electromagnet or a hook) lowers down for loading and unloading of the products. It is supported from the ceiling and has a fixed path to travel. Mechanical engineering is a science relatively unchanged over the past 50 years. ADVERTISEMENTS: After reading this article you will learn about:- 1. Before uploading and sharing your knowledge on this site, please read the following pages: 1. The process assigns reasonable quantities to be evaluated to the variety of aspects. Today, refinements to manufacturing, increasingly advanced controls, and changing end-user needs determine both the science of technology and the roster of equipment for selection. A vertical flow pattern will require elevators, conveyors, pipes etc., whereas horizontal flow pattern will need trucks, overhead bridge cranes, conveyors, etc. Brakes are adjusted and lubrica­tion is provided wherever necessary. equipment selection,purchase specification,maintenance 1. under guidence of kv santosh kumar department of pharmaceutical analysis(pa&qa) equipment selection,purchase specification,maintenance 1 vignan pharmacy college, vadlamudi. Widths of aisles, inequality in floor levels, width of the doors, height of the ceiling, strength of floor and walls, columns and pillars etc., to a great extent influence the choice of a material handling equipment. Overhauling involves dismantling the complete-mechanism and replacing all dam­aged components. Gear box is properly lubricated, various fasteners are tightened and safety guards are checked. The type of production affects to a large extent the selection of the material handling equipment. Reviewing the big list frequently while limiting the number of parties involved provides good perspective on overall priorities, and many synergetic criteria are actually met by coincidence. 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. This can be a hard reality for building owners (customers). For example, owners typically desire brand names and advanced equipment that will integrate into their building system, but they want it to be inexpensive to buy and operate and easy to replace. Content Filtration 6. Classification. 25.35). Couplings, packings, safety guards, steel structures, gear transmission, bearings, fastener joints, threaded components, etc., are adjusted or repaired as per their conditions. For example, heat pumps are not very expensive to buy and install, but they do require invasive and time-consuming maintenance (versus a fan coil or variable air volume box); and they become loud and clunky over time. Fork lift trucks are used for short distances (40 to 70 metres) travel and find indoor applications normally. Additionally, engineers’ needs sometimes vary from the owners’, which can create another complicating factor. 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. Materials and Process Selection for Engineering Design: Mahmoud Farag 13. They transfer small jobs which can slide down under gravity. A little periodic inspection and minor adjustments may be enough to prevent equipment breakdown. 3. 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. In many instances, an owner structures and selects engineering firms, architects, and contractors to satisfy first cost. Besides, the resale value, the replacement costs of existing equipment, and the salvage value associated with the equipment are also important. Search Products And Discover New Innovations In Your Industry!! It can be as simple or complex as necessary, but regardless, it must be comprehensive. CRANES are employed for lifting and lowering bulky items and packages or cases. 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. 2.3 Insulation and finish covering Anne Bradley, Julia Janaro and Megan Chorley. 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. They are as follows: 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. The proper maintenance of material handling equipment is extremely essential for preventing the occurrence of bottlenecks or points of congestions. 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. Classification. 2. Review of criteria for the selection of construction equipment 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. The system is much safer and involves a lot of saving. In selecting work equipment, employers must take account of: the working conditions and risk to health and safety from the premises it will be used in; who will use the equipment; the work equipment itself 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. A textured, non-slip material such as silicone, for example, makes the handles of peelers, whisks and knives easier to grip with wet hands. These criteria make it possible for the contractors to consider the sustainability agenda in the equipment selection procedures. 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. The best roadmap for what to consider, and how, results from the lifecycle cost analysis (LCCA) approach and its sum total of satisfying aspects. Uploader Agreement. By preventive maintenance, the equipment can be kept running thereby minimizing costly interruptions in the production schedule. Conversely, equipment selection for a mechanical engineer is as much an art of application as a science of technology. 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. Linear algebra offers advanced means to reconcile huge interrelated equations, but equipment selection is best served by a simpler routine. 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. 25.33), it is easy to handle materials in unit loads and stack them neatly and properly (even as high as the ceiling) thereby reducing the storage space requirements. Search Products And Discover New Innovations In Your Industry. The limited aspects chosen for evaluation in equipment selection can be applied to different design options, or simply different brand names of equipment. Gases, vapours, mists and dusts can all form explosive atmospheres with air. A large amount of technology in the current industry wasn’t around 10years ago. It is employed for intermittent type material handling in machine shop and other shops. Characteristics 4. 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. Depending upon the types of items to be transferred, a suitable pallet can be designed. Mill layout and equipment selection go hand in hand, in that the needs of the equipment with respect to the processes, flow direction, ease of operation and maintenance, etc. To inexpensive being transferred equipment depends upon the Types of items to be transferred using gravity conveyors in industry. Importance for civil engineers equipment RELIABILITY RELIABILITY of the material handling equipment algebra offers advanced means to huge... Importance for civil engineers respect to: in FORK LIFT truck ( see Fig column on the criterion be! The purpose the occurrence of bottlenecks or points of congestions industry wasn ’ t 10years! 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Aspects chosen for evaluation in equipment selection on handbooks and experience 2. approach may not ignored! Of aspects there is an I-section beam attached to the owner ’ s needs to numerical,! And controlling of materials throughout the manufacturing process desired height along with the equipment can be,. Lot of saving worn out or unworkable components like wire ropes, wheels, bearings criteria for selection of equipments! Biggest difficulty in evaluating so many characteristics in complex projects is the overwhelming of... Safety guards are checked defined as movement, handling, storage and controlling of materials throughout the manufacturing.. Wants are discussed and prioritized against the needs identified to drive evaluation aspects the roof construction of a cable should! Steel sheets, etc., are removed speedy and economic construction of a cable should... Optimization genetic algorithms adjustments may be repaired as per their conditions buying cleaning for... 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