The type of production affects to a large extent the selection of the material handling equipment. Uploader Agreement. Forks can be lifted to the desired height along with the material (boxes, etc.) Haidar et al. 2.3 Insulation and finish covering 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. The material can be loaded in the trays automatically. Chain conveyors are used in refrigeration industries for painting and plating of the refrigerator shells. The former part involves procedures Maintenance of Material Handling Equipments 3. These containers are placed on the truck or in the trailers which are pulled by tractors or trucks. Bigger jobs can be handled as they are, whereas small items are put in boxes, tins or pallets before being transferred. Preventive maintenance also includes lubrication, adjustment, or repair while the equipment is still in a minor stage of defect. 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. 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. Engine drive and are generally used for outdoor applications. Engineers are the subject matter experts that select based on the criterion to be evaluated, not only first cost. It is on wheels and can be moved at the place of use. SESSION OBJECTIVES After the end of the session one should be able to understand the what is operating equipment, its requirements & criteria for selection. SELECTION CRITERIA 1. Belt conveyors are substituted for roller conveyors when the parts are small and are required to be transferred separately, from one station to another. 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. A little periodic inspection and minor adjustments may be enough to prevent equipment breakdown. Demand drives innovation. Anne Bradley, Julia Janaro and Megan Chorley. Material is loaded in the trailers (CH: 1, 2, 4, 6, 9, 14) which are attached to the towing tractor. It is the responsibility of the EHK to procure the ideal, most efficient equipment for her staff to ensure maximum productivity. 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. An engineer working on equipment selection can methodically develop that criterion and evaluate it to provide optimum choices. By Seth Pearce, PE, Southland Energy, Garden Grove, Calif. Commissioning and the technology evolution, How ASHRAE Standard 90.1 contributes to integrated design, Rapid COVID-19 detection for hospitals, retirement homes designed, Weekly merger and acquisition update: December 4, 2020, Top 5 Consulting-Specifying Engineer articles: November 27 to December 3, 2020, Best practices in science, technology office design, Multi-family housing design trends driven by COVID-19, Consulting-Specifying Engineer most-viewed articles, November 2020. Selection Criteria Examples. Difficulty can arise when these wants are discussed and prioritized against the needs identified to drive evaluation aspects. 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 conveyor system is completely dismantled. In other words, there is an art and science to defining and evaluating key aspects in order to choose the proper equipment. 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. Chemicals management system The tenderer shall have a chemicals management system in place with dedicated resources, the This transforms subjective qualities of a project’s needs to numerical analysis, considered the "art" of the process. In a jib crane the hoist unit may be mounted on an I-section jib which is in turn supported on a column. Those needs must be emphasized and prioritized as necessary for evaluation in equipment selection. The net-present or net-future values from a LCCA will ensure the total costs associated with a particular equipment selection have been considered. In the real world, there will be another half dozen purely technical requirements included in the selection, but the point can be seen: methodically eat this elephant, one bite at a time. Material handling system can be defined as movement, handling, storage and controlling of materials throughout the manufacturing process. Both the right and left brain will be activated to achieve both the art and science of evaluating abstract conditions and technical applications. 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. Fork lift trucks are used for short distances (40 to 70 metres) travel and find indoor applications normally. 25.3) the forks are attached to a column on the truck. 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 finds applications in wire drawing and many other factories employing chemical cleaning of material, etc. Choose a realistic discount rate, relative to the owner’s approximate return on investment or cost of money. When buying equipment, spare parts must be readily available or could be easily purchased. 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. 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. It is employed for intermittent type material handling in machine shop and other shops. The proper maintenance of material handling equipment is extremely essential for preventing the occurrence of bottlenecks or points of congestions. This diverse knowledge is necessary to create the roadmap for equipment evaluation. A textured, non-slip material such as silicone, for example, makes the handles of peelers, whisks and knives easier to grip with wet hands. Selection of Material Handling Equipment 2. 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. Core aspects exist that often are purely technical variables that require evaluation and satisfaction. Of those, five are subjective and one is objective because inexpensive typically correlates to a number. Use the process to drive the building blocks. must be blended into the overall plan, with the ultimate objective of maximizing the productivity of each machine and minimizing handling. Replacement of Parts. Search Products And Discover New Innovations In Your Industry. The material handling equipment should be able to handle the maximum output. Pipe line conveyors are used for transporting granular (wheat) or pulverized materials (salt) through the pipes. 2. 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. 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. Prohibited Content 3. The process assigns reasonable quantities to be evaluated to the variety of aspects. 2. Review of criteria for the selection of construction equipment The ultimate aim is to arrive at the lowest cost per unit of material handled. The material can be transferred from one place to another along the beam. Chutes generally feed parts (which they receive from, say sheet metal presses) to the conveyor which takes the parts to their destination. 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. Mechanical engineering is a science relatively unchanged over the past 50 years. 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. 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. In many instances, an owner structures and selects engineering firms, architects, and contractors to satisfy first cost. Equipment Selection for Surface Mining: A Review Christina Burt Department of Mathematics and Statistics, University of Melbourne, Melbourne, ... (1997)) or some optimization criteria, this may also lead to mixed-type (i.e., heterogeneous) eets. 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. A vertical flow pattern will require elevators, conveyors, pipes etc., whereas horizontal flow pattern will need trucks, overhead bridge cranes, conveyors, etc. 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. This principle of unit load can also be explained like this. A large amount of technology in the current industry wasn’t around 10years ago. After reading this article you will learn about:- 1. Linear algebra offers advanced means to reconcile huge interrelated equations, but equipment selection is best served by a simpler routine. evaluation criteria for the selection of material handling equipment. Rollers and belts are checked, adjusted^ repaired. 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. 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. Search Products And Discover New Innovations In Your Industry!! 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. 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. Tractor train is very helpful in big industries. Chutes have sheet metal or roller base for transferring components down the incline. Proper due diligence is required before making any major equipment purchasing decisions. Safety First. Assign annual occurrences, such as large overhauls or other anticipated repairs or replacements. 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. 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. Selection of Material Handling Equipment: 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. Additionally, engineers’ needs sometimes vary from the owners’, which can create another complicating factor. MONORAIL is an I-section beam attached to the ceiling and having either a trolley or carrier moving along it. The best roadmap for what to consider, and how, results from the lifecycle cost analysis (LCCA) approach and its sum total of satisfying aspects. Industrial Engineering, Industries, Material Handling, Material Handling Equipment, Production. Every material handling equipment possesses certain characteristics with respect to: In FORK LIFT TRUCK (see Fig. HAZARDOUS AREA ZONES AND EQUIPMENT CATEGORIES Overview . 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). Due to improved e ciencies after maintenance and overhauls, the operating costs of the equip- Gravity conveyor is easy to set up as it does not involve any power drive. The type of explosion protection of the equipment is to be suitable for the zone of use. Roller conveyors can move the material along straight or curved paths. The system is much safer and involves a lot of saving. Belts or rollers are inspected for tensions and wear and tear. A chain conveyor (Fig. The belt material maybe rubber covered canvas, steel, plain fabric or woven wire (high temperature use). Factors or Criteria (Principles) considered for selection of office machines. The choice of a particular equipment depends upon the specific requirements or the conditions of an industry. 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. These criteria make it possible for the contractors to consider the sustainability agenda in the equipment selection procedures. The main factors for evaluation can vary from a half dozen to hundreds. Gases, vapours, mists and dusts can all form explosive atmospheres with air. Gravity type conveyors should be preferred as compared to line conveyors wherever practical. 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. Select the least expensive material for the beam from Table 9.2. In this role, he helps to develop and implement solutions to conserve energy, waste, and water; integrate generation; and incorporate renewable energy. 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. 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. 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. Structures, safety guards, etc., may be repaired as per their conditions. 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. Packages of hosiery goods, steel sheets, etc., can be transferred using gravity conveyors. By using available machines (like one for strapping steel strips around cotton bales), fork lift trucks, skids and pallets (see Fig. The chain has chain links which push the material forward. For speedy and economic construction of a project, proper choice of equipment is of preliminary importance for civil engineers. Tractors, three wheeled or four wheeled (CH: 1, 2, 4, 6, 9, 12, 15, 16) employ I.C. After that, degrees of obtrusive can be weighed at the expense of the other needs and a final selection can be made. Thanks for visiting my selection criteria examples page. 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. Report a Violation 11. The Handbook of Chemical Process Equipment is a major reference on process equipment. 25.35). equipment that is highly automated. EMR9(2) selection of explosion protected equipment (EPE) Selection of EPE will always follow the area classification. Point-of-care testing can help optimize treatmen… Seth Pearce is director of design and development for Southland Energy, a division of Southland Industries. Also ask for business references and for locations where the same is in use. Brakes are adjusted and lubrication is provided wherever necessary. Crane structure, buffers, rails, open gear transmission, pulley blocks, etc., may be replaced and various sub-mechanisms may be aligned and adjusted. Huge Collection of Essays, Research Papers and Articles on Business Management shared by visitors and users like you. The limited aspects chosen for evaluation in equipment selection can be applied to different design options, or simply different brand names of equipment. An example can be illustrated in three owner "wants": a cutting-edge working environment, budget conformity, and reasonable operating costs. The typical pattern involves building owners and/or end users simply expressing their "wants," from robust to redundant to inexpensive. Production line flow can be maintained only if the material handling equipment is in the proper working order. REQUIREMENTS & CRITERIA FOR SELECTION Quantity, Types and Quality . 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 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. A gantry crane acts as an auxiliary to bridge crane. Account Disable 12. Before buying cleaning equipment for the staff the Executive Housekeeper / AEHK should as for a product demonstration. It is supported from the ceiling and has a fixed path to travel. EQUIPMENT RELIABILITY Reliability of the equipment and supplier reputation and the after sale service also plays an important role in selecting material handling equipments. The engineer must have a good grasp of these aspects for equipment selection in the factors of their evaluation. Components, worn out and beyond repair like belts, bearings, packings, oil seals, rollers, drums, fasteners, and couplings are replaced. 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. By preventive maintenance, the equipment can be kept running thereby minimizing costly interruptions in the production schedule. Terms of Service 7. An overhead bridge crane finds applications in most of the industries, making engines, compressors, pressure vessels, foundries, steel mills, etc. The key aspects that mechanical engineers need to consider in equipment selection are nuanced. The main purpose of using a material handling system is to ensure that the material in the right amount is The economics of equipment selection and replacement issues are dealt with in detail in later parts. Safety trumps style in the kitchen environment, so look for equipment that anticipates danger, then offers a solution. (1999) split the equipment selection process into knowledge based and optimization genetic algorithms. Gravity or air flow moves the material ahead. 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. Characteristics 4. 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. Preliminary Selection Considerations. Office Requirements: The selection of office machines and equipment must be … on them and the material can be stacked at the proper place, even very close to the roof. 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. 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. The biggest difficulty in evaluating so many characteristics in complex projects is the overwhelming degrees of freedom. An excellent understanding of owners’ wants is required, in combination with a good network of experience and peers to draw upon, and a methodological system of scoring and evaluation. This could be described as cool, quiet, unobtrusive, inexpensive, efficient, and low-maintenance; or three wants summarized in six needs. The repairable parts of the system, after inspection are corrected for small repairs and minor defects are rectified. One factor in the Selection of branded equipment is the availability of replacement parts. Systems like open gear transmission, couplings, riveted, and bolted joints, trolley, brakes, guards, etc., may be repaired. Conversely, equipment selection for a mechanical engineer is as much an art of application as a science of technology. Before uploading and sharing your knowledge on this site, please read the following pages: 1. Not absolutely, but relatively to a point. Simple weighted scoring can potentially identify ideal equipment, and a LCCA can validate or re-evaluate that potential. Special Equipment. Classification. 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. The following factors or principles should be considered while selecting the office machine and equipment. 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. 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 wide variety of material handling equipment is in the market; some equipment are for general purpose use and others are of special purpose use. HOIST may be mounted on a single rail. 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. It saves valuable floor space. It is a fast and flexible equipment for floor to floor travel. To be assured that you are getting the best deal, you need to ask for more than one bid. They prove economical if the flow of material is continuous. ADVERTISEMENTS: After reading this article you will learn about:- 1. Creating the roadmap for equipment evaluation. 3. 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. Maintenance of Material Handling Equipments 3. 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. 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. […] Hazardous area classification is used to identify places where, because of the potential for an explosive atmosphere, This can be a hard reality for building owners (customers). cie45 proceedings, 28-30 october 2015, metz / france 1 maintenance strategy selection for medical equipments using fuzzy multiple criteria decision making approach One challenge is identifying aspects for consideration. The selection of measuring equipment or instrument is based on the characteristics, tolerances, and datums of the part to be measured. 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. 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. 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. Characteristics 4. 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. Your goal should always be to get the maximum value for the lowest possible cost. 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. In this system, big metal containers have number of small products filled in them. Instead, they should be distilled into needs and evaluated as key aspects in equipment selection. An interesting paradigm exists when defining the aspects that should be evaluated in equipment selection. Depending upon the types of items to be transferred, a suitable pallet can be designed. Content Guidelines 2. Selection of equipment also depends on engineering factors like door and ceiling dimensions, floor space, floor conditions and structural strength. A typical repair cycle may be as follows: This cycle involves 15 inspections, 4 repairs and 1 overhaul. Selection of Material Handling Equipment 2. 5.2.3 Equipment selection. Copyright 10. Whether you are in the market to replace outdated lab equipment or are looking to purchase the latest and greatest in new technology, it’s important to choose the right equipment for the right working environment, which encompasses the organization, the clinical diagnosticians and […] 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. Content Filtration 6. Vibrating slides transport materials up an incline also (cigarette factories). So would noise criterion levels or minimal interruption of the benefitted space trump costs? Roller conveyors may be gravity aided or powered and are employed for transporting products having flat bottoms. Disclaimer 8. Select realistic escalation rates for energy, labor, or equipment. Unless a brand new plant is being designed, users decide to replace a pump because of its age and wear or persistent reliability issues. Preventive maintenance consists of frequent inspections and examination of the material handling equipment, with special attention to the components requiring it. 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. Conversely, equipment selection for a mechanical engineer is as much an art of application as a science of technology. In multistorey plants, material is lifted up and transported by lifts. Their research work identified performance measure, technical, economic and strategic aspects as the evaluation criteria. Items like refrigerators, air-conditioners or televisions can be sent to distant places using the principle of containerization. There are few basic things that are considered in selection of suitable equipment. Advertisements: after reading this article you will learn about: - 1 ( Fig. Those needs must be readily available or could be easily purchased includes lubrication,,... Of trained manpower or intangible wants should not be cost-effective Analytical … special equipment links... ( salt ) through the pipes finds applications in heavy Engineering and generally in type... Are corrected for small repairs and minor defects are rectified measure, technical, economic and strategic aspects as evaluation! Space trump costs, etc. that select based on the criterion to transferred! Emphasized and prioritized against the needs identified to drive evaluation aspects of trained manpower annual,! 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