Human Resource Practices, employee voice and quit rate in outsourcing Essay

Human Resource Practices, employee voice and quit rate in outsourcing industry in India - Essay Example This paper is written as a research proposal to investigate various issues like Human Resource Practices, Employee Voice and Quit Rate in Outsourcing Industry in India. Since India is a country which is diversified in many ways, thus a unique HRM strategy can not be formulated. The research is conducted to find out the parameters which are required to be considered while formulating HRM strategies for outsourcing businesses in India. The objective of this research is to find out why many employees quit from the outsourcing industry in India. The research will try to make a study as to whether employee quit because of insufficient compensation or any other reasons. The increasing quit rates are actually an important concern of cost for organizations. This is because quit rates increase labor costs (Oi 1962) and at the same time they decrease organizational functioning (Norsworthy and Zabala 1986). According to Freeman and Medoff (1984) industrial relations show that in firms which have a union the quit rate is lesser than when compared to those firms which has no unions. Unions actually in firms are a tool through which the employees can voice their problems and seek better compensation instead of quitting. Arthur (1994) feels that current research on better commitment and high level of performance is in reality a coherent set of human resource (HR) practices. This coherent set can also bring in better performance on the part of the employees according to Ichniowski etal, (1996). High rate of quitting by the employees will sabotage functioning (Alexander, Bloom, and Nuchols 1994; Huselid 1995). Appelbaum et al., (2000) state that better performance patterns comprise those that commit in the accomplishments of the work force and furnish the chance and inducements for employees to utilize those skills efficiently. â€Å"Employee retention is critical to the long term health and success of company

ASC 2 Essay Example | Topics and Well Written Essays - 500 words

ASC 2 - Essay Example ipal supplier earns the entire revenue from the sale transaction and should therefore report the gross earnings, while the agent earns a commission on the transaction and should report the net earnings. The guidelines specify eight tests to ascertain whether a particular entity is acting in the capacity of a principal. Satisfaction of many of these conditions would normally indicate that the entity is acting in the capacity of principal and should record thee gross revenue. The eight tests specified by ASC are: 2. Risk for Inventory: The party that has unmitigated general inventory risk would be acting in the capacity of a principal. Such party would maintain an inventory of products before sale with accompanying inventory risk and will take ownership if the product is returned by the customer. 5. Supplier selection: A party that has the discretion to select a particular supplier, from several suppliers who can provide the product, for fulfilling a particular order to a customer would be acting in the capacity of principal. 7. Physical loss inventory risk: If the entity assumes risk of the product until transfer to the customer or gets the title back if the product is returned, it is most probably acting in the capacity of a principal. Amazon.Com has included three of the eight conditions specified under the ASC. Conditions such as carrying out product changes, determination of product specifications, and assumption of credit risk have not been included by Amazon. Some of these are specified as providing weaker evidence. However, when a number of factors are being considered and judgment is made on the basis of several of these factors, it would have been more appropriate to include all of them, which Amazon has not done. Thus while Amazon’s stated practice is in conformance with the ASC guidelines, it does not include all the conditions. Overstock.Com specifically states that it follows the ASC guidelines on Principal Agent Considerations while determining

Case study Example | Topics and Well Written Essays - 750 words - 33

Case Study Example Britt might be compelled by the culture in the company, as informed by Sue, regarding the information provided by George. In the case, George is willing to disclose and use insider information for the company to present a winning bid, probably at a fee. The returns of the act might be big, but the acts of ensuring the tender wins are unethical. In this regard, Britt is entitled to at ethically, and avoid getting involved in the acts. As a matter of fact and responsibility, she is supposed to disclose such information to the management. The hardest part would be such disclosure as the ethical misdemeanor is led by the team leader, whilst the management can compromise such information to get the tender. Notwithstanding, Britt should go ahead and do the right thing, hoping for the best possible response from the company. As an ethics officer, it is vital to discuss the belief of discussing a pending proposal with a decision making team. The issue is hard to tackle, but very vital and relevant to the parties, as it tries to curb future malpractices. Ethical malpractices if discovered may make a company less appealing to the essential stakeholders, making it lose profitability. One way of communicating the issue to the firm is by engaging the workers in a one on one discussion. As an officer, one can approach the employees on a personal basis and enlighten them on the ills on such a behavior. The officer can research for various cases that negatively affected other companies and effects on individuals of such companies. Such information will be vital in ensuring that the employees are conversant with challenges of unethical practices and thus try to refrain from the same. Another practical way of ensuring that the employees of such a firm are addressed on the issue is organizing conferences. Such conferences should be well tailored to handle ethical issues and if necessary other issues on good corporate responsibilities. Such a move, even though initiated by an

Communications Plan _ Context Analysis _ Promotional Objectives _ Assignment

Communications Plan _ Context Analysis _ Promotional Objectives _ Marketing Communications Strategies _ Promotional Mix - Assignment Example An effective communication plan acts as a guide to the marketing managers in the company to maintain a better cooperative relationship with the targeted customer group through an enhanced ability to suffice customer needs (Lyles, 2002). It is also argued to be an effective tool to build trust amid the customer groups, which not only stimulates greater volume of customers purchasing the offered service/product, but also ensures long-run stability in the organisation-client relationship (Andersen, 2001). Context Analysis Cambridge Science Pharmaceuticals (CSP), as an international healthcare company, puts principle emphasis on marketing, manufacturing and developing medicinal products that treat gastrointestinal diseases, metabolic disorders, and immune deficiencies along with other chronic and acute medical conditions. Notably, the study in Quelch & Beckham (2010) reflects that majority of the US residents are facing problems related to overweight and obesity, which includes almost ev ery age group with dissimilar perceptions. This rating apparently advocated that one of the major causes for the preventable death toll in the US was diseases of health issues resulting from overweightedness and obesity. It is worth mentioning in this context that with the research conducted by CSP’s Senior Director of Marketing, Barbara Printup, overweight was related to a number of serious health complications about which, the common public was becoming increasingly aware of, taking measures to avoid these hazards. All these factors undoubtedly presented a promising scenario as much as the demand for a weight-loss safe drug was concerned (Quelch & Beckham, 2010). However, the study shows that there were many drugs being circulated around the market to suffice the demand for weight-loss drugs in the US. For example, Alli, a weight-loss drug product, was launched in the US market in 2008 after its approval by the FDA. The product was failed to capture the market because of ne gative side effects, directly hampering the gastrointestinal conditions of the regular consumers. On the other hand, other Over-The-Counter (OTC) weight-loss solutions focused on their capabilities to serve with minimum side-effect assurance, being based on herbal ingredients such as green tea extract, hoodia and chromium. These products were categorised as herbal or dietary supplements by the FDA, which even though ensured minimum side-effects, but were massively slow in yielding faster results (Quelch & Beckham, 2010). Based on the arguments, it becomes explicit that even if the market presented a promising opportunity for the weight-loss drug, it also had its unique barriers of side-effects and faster results. Correspondingly, Metabical possessed some negative effects, which can hamper its market presence and long-run success potentials subjected to the effectiveness of the marketing strategies used for its launch (Quelch & Beckham, 2010). Promotional Objectives As mentioned in Q uelch & Beckham (2010), the final launch of Metabical was pending on the year 2009, in the month of January, following its approval by the FDA. Correspondingly, CSP had a year to program its promotional strategies. The promotional objectives, thereby determined by Printup on behalf of CSP’s Metabical were targeted to both the end consumers and the health care providers who shall be a pivotal participant in the communication plan. The foremost

Strength as a Teacher Essay Example for Free

Strength as a Teacher Essay I have come to believe -after receiving some of my students ´ feedback- that as a non-native speaker I did fairly well in teaching my lessons in the first two weeks. The students compared me to other non-native teacher they had been taught by before (in other Celta courses) and confirmed that I provided the most easily understandable explanations in the field of  ´lexis ´. Even though sometimes it did not work out as planned, I know that one of my major strength lies in explaining things in an extremely simple way. I enjoy teaching vocabulary by creating little stories. Not only but also do I derive from my tutors ´ feedback that a further strength of mine can be spotted in lesson planning. Although I need to express my aims more succinctly and clearly the lesson plans are sound, clear and thorough. To plan a lesson is not always easy, because it can never be foreseen what will happen during the class. So it is important to make sure not to be caught in the act with a lack of knowledge or information to present the students or at least not to let the students realize. Therefore, to think about more than one plan to fall back on is of major importance. Despite of the fact that I struggle with nervousness and tentativeness, I handle to lead a class. I give them time to think before they express themselves. I do not rush thing. I intend to spot my own mistakes immediately and correct them for the students, trying to not let them be aware of it. I do my best to fit in the time limit when to start and when to finish, trying to include all the points from my lesson plan. 2.) My major weakness is grammar. I am confident in using the basics of English grammar but when it gets into anything intricate Im a little lost as to how to explain it in a way that students can understand. Another fact that I have to focus on is to firstly learn from the students what they already know instead of teaching them something that they have already heard of from scratch. Here, providing exercises to check their knowledge and giving them further practice would be the best possible way. For example, I taught a grammar class in the second week of the course that was a bit of a dud because I just didnt really have the background knowledge required to present some easy understandable explanations. Moreover, the students had already heard of that grammatical structure I intended to teach them. I could have just checked and applied my teaching to their needs. I make every effort to give students sufficient feedback, but unfortunately this is another weakness that I am facing. Due to unexpected events in class, sometimes activities take longer and therefore need to be planned more thoroughly beforehand. Therefore there is not enough time to support students with enough feedback. One student once told me that she had not understood the purpose of the last activity in class because she wasn ´t given any feedback at the end. Though my lesson plans are well structured I need to follow this structure meticulously and make sure not to be distracted by anything that would lead to its collapse. Due to the shortness of my practical experience I am definitely struggling with being holistic but still concentrating too much on doing the single parts of a lesson perfect. 3.) Observing my colleagues, experienced teachers and videotaped teachers has certainly helped me to develop my teaching so far. Not only have I skilled and talented colleagues for demonstration, but especially observing one teacher in the last week helped me realize the most important thing for me while teaching: to keep calm and relaxed! This teacher had not only style but also a philosophy because she seemed to be very reflective about what she expressed. Moreover, she kept the  ´Teacher-Talk ´ at a minimum and asked her students generated, topic-related and intriguing questions exploiting the topic fully. She gave the students enough time to answer; not rushing them or giving them a feeling of insecurity. Teacher-type: the enabler. Students have a tendency immediately detecting an insecure or tentative teacher. It reflects in their class behavior and in their responses. I have come to realize that contrary to using my voice efficiently I am likely to speak in a low, soft sometimes even faint manner. True, not every teacher I observed spoke at full volume – and it is always important to note that the amount of students in a classroom is decisive but I have learnt that a certain system of when and how to use one ´s voice helps to effectively reach the aim of teaching successfully.

Fresh Water Distillate Pump

Fresh Water Distillate Pump INTRODUCTION . There was MOD vessel on the port and this vessel required a fresh water for the 50 crew on the ship. So i have to make a system to produce fresh water on that ship. But the problem is that the ship is at port and there is lot of waste present in the port sea water such as organic waste which contain mainly garbage ,untreated sewage which can discharge directly or indirectly in the sea.treaces of heavy metals also present mercury,cadmium,,chromium these heavy metals are dangerous to health and also to the environment.heavy metals such as zinc and lead may causes corrosion .beside of these there was sone anthropogenic source of waste present which are listed below. Mining effluents Domestic effluents Industrial effluents Shipping activities including those of motorised boats and canoes. Fertilizers pesticides Atmospheric sources such as gas flaring, incineration of domestic waste manly garbage. Petroleum industries activities. According to uk water regulation the perctange of some heavy metals must be at certain level CALCULATION Before choosing any generator I have to calculate the water which fulfil the requirement of 50 persons. In a ship one person can MAXIUM 600 to 800 litres per day. A person can use the fresh water for washing clothes, washing utensils, wash room, drinking, cooking, bathing, and etc. If we calculate the fresh water for the 50 persons isà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦! 800*50= 40000 litres per day so i have to chose a system which is capable for the production of minim 40000 liter per day TYPES OF FREH WATER GENERATOR in an efficient engine, only about half of the heat in the fuel is converted into useful work some of the Heat energy is lost in the cooling systems and exhaust gas. but some of the heat lost is recovered . the Modern highly pressure charged engines have a large amount of energy in scavenge air cooling wateer and this can be provide as the source of heating to the bunkering .an other source of heat is jacket water cooling and it also contain considerable amount of heat and this heat can be recovered in the fresh water evaporator system which operate at the pressure giving a corresponding saturation temperature fo water lower the the jacket water entering in to the heating medium .gasses dissolved when water is heated to its saturation temperature. There are two methods for generating fresh water, 1.Reverse Osmosis 2. distillation. is generally used were large quantities of relatively low quality water is required. Typical examples of water produced are; Treatment Total Hardness Calcium Hardness Silica Sodium Chloride TDS Sea Water 250 200 14 15000 15000 Evaporator Reverse Osmosis 20 5 After Demineraliser 0 Trace . Distillation The most commonly use freshwater generation is evaporative distillation, which uses engine jacket cooling water or steam heat from exhaust or gas fired boilers to evaporate sea water, which is then condensed into fresh water. Evaporation distillers comes in two main forms, 1.multistage flash 2 multi effect evaporators. Simple single effect evaporator The system above shows an evaporator typically heated by Main Engine Jacket water with means to supply steam when the engine is shut down Single and multi stage tube distillation was one of the early types of fresh water generation. It uses heat passing through submerged coils or tube bundles immersed in sea water to produce the distillate, which when condensed becomes the fresh water. Single Stage Flash Evaporator flash evapourator it consist of two parts 1.condensor 2.evaporator generally the heating method used is main engine heat or by heating oil usually the water boils at 100 degree. But in the freshwater generator the water inside the system usually boiled at 60 to 70 degree. By using ejector or edecutor.basically an alternative arrangement to the shell evaporator is the flash evaporator were heating takes place externally, the hot brine enters the low pressure chamber into a weir where some of the water flashes off. Water overflowing the weir is either out or passed on to a second stage. Multi stage units with each stage maintained at a lower pressure allow improved efficiency and high outputs. to check the percentage of salt salinoemetre is used. its is important to use salinometere because if the percentage of salt in water became high then it can detect it and raised the alarm Multi Stage Flash Evaporator flash flow diagramr in this process we use two evaporation stages in order to get a better typical multi stage flash system is based upon preheating of a pressurised sea water stream, or more typically a recycle brine stream to which the feed sea water is added the stream is heated in the heat input section brine heater. Double stage FWG is similar to the single stage FWG, the only difference being that the whole single stage process is repeated twice in 2-stage generator From here the recycle stream is passed into the first stage of a series of flash chambers. Here the pressure is released, permitting a portion of the brine stream to flash to form salt-free vapour which is condensed to give the fresh water. In condensing the vapour gives off its latent heat to the recycle brine stream. From the first stage the flashing brine stream is passed to the second stage which is kept at a slightly lower pressure more vapour flashes off. In the same way the flashing brine stream passes to the next stage and so o n through the plant with a portion of the vapour flashing off at each stage. A heat balance shows that the heat supplied in the brine heater has to be rejected. This is done in the last two stages of the plant which are cooled by a sea water stream which subsequently passes to waste. Modern Developments. Large Multi-effect Alfa laval evaporator In 1990 Alfa-Laval Desalt introduced its D-TU concept-a ME desalination system based on tube type distillers, by using the evaporation under vacuum with the rising film principle. This is thath means the inner surfaces of the tube are always covered with a then film of the feed water . heating medium is circulates on the outside of the tubes in the heat exchangerss.and The vacuum is created by water ejectors connected to each effects. A controlled amount of sea water is led to the bottom of each of the effect. where it is mixes with the brine from the previous effect and into the tubes in the heat exchanger, where it is heated. The generated vapours enter a separator where the brine droplets from the wet vapour are separated. The dry vapour pass through the separator to the following effect where they condense. The remaining sea water which has been converted to brine, flows to the next effect as feed water. The brine is taken out and discharged overboard. The latent heat in the vapo urs from the previous effect is used as a heating medium in the following effects. The process continues until the last effect where the generated vapours condense cooled by sea water. The condensate vapours flow from one effect to the next, and are retained in a collecting tank as distilled water. If a low temperature evaporator is to be used for domestic purposes certain restrictions apply. Operation is not allowed within 25 miles of the coast or 50 miles of an estuary. Chromate jacket water treatment must never be used. The condensate must be treated in order to destroy bacteria. Care must be taken if chemicals are used to inhibit marine growth in pipe work. Vapour Compression The boiler section is initially filled with fresh water. When the system is operating feed water is supplied via the level control valve. Hot steam is created in the boiler which passes over into the main section. Here the steam is mixed with a brine spray. Some of the steam is condensed and some of the brine spray is flashed off. The combined steam passes over to the vapour section via a scrubber. Flow of vapour occurs due to the action of the compressor which increases the vapour pressure increaseing its saturation temperature. Reverse Osmosis Osmosis describes the process whereby a fluid will pass from a more dense to a less dense solution through a semi-permeable membrane. It is very important to the water absorption processes of plants. RO is a process which uses a semi permeable membrane which retains both salt and impurities from sea water while allowing water molecules to pass. Filtration of up to 90% is possible thus making the produced water unsuitable for boiler feed without further conditioning. Improved quality is possible using a two or more pass system. diagram showing osmotic headThe parchment paper acts as the semi-permeable membrane and allows the water molecules to pass but not the larger salt molecules. Reverse osmosis is the process whereby a pressure greater than the osmotic head pressure is applied to a solution of high density. Fluid is forced from the high density side to the less dense side. For desalination plants the pressure is applied to sea water and the water is forced through the semi-permeable membrane. The semi permeable membrane which is typically made of polyamide membrane sheets wrapped in a spiral form around a perforated tube resembling a loosely wound toilet roll. Design of the cartridges is therefore such that the sea water feed passes over the membrane sheets so that the washing action keeps the surfaces clear of deposits. A dosing chemical is also injected to assist the action. Make up of membrane The two membranes sealed on the outer three edges, enclose porous under-layer through which the permeate spirals to central collecting tube Schematic of RO plant Pressurised feed water passes lengthways through the tubular spiral wound membrane element. Freshwater permeate travels through the membrane layers as directed along a spiral bath inot a central perforated tube, while brine is discharged out the end of the membrane element.. The fluid could be water and the solutions sea water. Under normal conditions the water would pass from the less saline solution to the more saline solution until the salinity was the same. This process will cease however if the level in the more saline side raises to give a difference greater than the Osmotic height. For practical use to allow the generation of large quantities of water. It is necessary to have a large surface area of membrane which has sufficient mechanical strength to resist the pressurised sea water.. The material used for sea water purification is spirally wound polyamide or polysulphonate sheets. One problem with any filtration system is that deposits accumulate and gradually blocks the filter. The sea water is supplied at a pressure of 60bar, a relief valve is fitted to the system. The Osmosis production plant is best suited to the production of large quantities of water rather than smaller quantities of steam plant feed quality. Pre-treatment and post treatment. Sea water feed for reverse osmosis plant is pre-treated before being passed through. The chemical sodium hexa phosphate is added to assist wash through of salt deposits on the surface of the elements and the sea water is sterilised to remove bacteria which could otherwise become resident in the filter. Chlorine is reduced by compressed carbon filter while solids are removed by other filters. Treatment is also necessary to make the water drinkable. The disc tube module is supposed to have the main advantage over the spiral wound type in that it avoids the need for the difficult cleaning processes required. With long lasting membranes, typically 5 years and in built cleaning system the unit will recover 30% as pure water from sea water passing through it Coil or Tube Seawater Evaporator This is a modern version of the type used when I was at sea in the 1960s; they used heating coils in those days as opposed to the pipe nest heaters of today. The coils used to become scaled in salt, with the attendant loss in output of distillate. I was in charge of the vaps and I remember the old chief coming down to the engine room on my watch and balling me out for the downturn in distillate. We were having problems with the boiler feed water purity (next article will cover the testing and treatment of boiler feed water) so I was blowing down the boiler regularly with the associated make-up requirement meant we needed more water pronto. Anyway I took him up to the vaps and showed him the scaling on the heating coils, reminding him that I was pumping Foss chemicals into the beast to try and break this away. He pushed me aside and shut off the seawater supply opening up the steam supply which rapidly dried the salt layer on the coils. He then opened the seawater inlet and hey presto the salt scale cracked and fell of the coils. I used this system several times until I was up for Seconds ticket and examiner wasnt too pleased to hear of this method, called the old Chief several unprintable names. Today we dont have to resort to these measures as there is an innovative device which uses a material that emits oscillations counteracting the natural seawater oscillations, thereby altering its properties and preventing calcium carbonate scale. (I will note the website address in the relevant section; I am too old for this new technology). A tube and coil evaporator consists of a steel vessel which has a nest of heating pipes near the bottom of the vessel being fed by steam or, hot water from the main engine. There is a tube condenser cooled by seawater installed near the top of the vessel. A vacuum is drawn in the vessel by air ejectors operated by steam or pressurised seawater. Seawater is fed into the evaporator just covering the heating pipes. Heat is supplied to the pipes and, this combined with the vacuum conditions begins to boil the seawater producing steam. The steam rises up through a demister into the tube condenser where it is evaporated to distilled water. This is collected and pumped via the salinometer to the storage EVAPORATOR SCALE. There are numerous types of evaporators all working to produce pure water with concentrated sea-water as waste. This concentration effect can lead to the formation of damaging scales within the evaporator. Over concentration is usually prevented by having a continuous stream of sea-water passing through the unit thus maintaining a satisfactory dilution of the sea-water side of the evaporator. However, because of the high salt content, when sea-water is elevated to temperatures above 30 C scales can begin to form on heat transfer surfaces. Additionally as the majority of evaporators operate under vacuum there is a tendency for the make-up water side to foam, which can give rise to carry-over and contamination of the pure water stream. Four scales which are principally found in evaporators are; Calcium Sulphate (CaSO4)-1200ppm, scale formation is principally on density, remains in solution below 140oC and/or 96000ppm.The worst scale forming salt forming a thin hard grey scale Magnesium Hydroxide Mg(OH)2 remains in solution below 90oC Magnesium Bi-Carbonate 150ppm soluble below 90oC, forms a soft scale, prevention by keeping operating temperature of evaporator below 90oC Above 90oC breaks down to form MgCO3 and CO2 and then Mg(OH)2 and CO2 Calcium bicarbonate Ca(HCO3)2 180ppm Slightly solube, above 65oC breaks down to form insuluble calcium carbonate forming a soft white scale. scale formation prevented by chemical treatment Ca(HCO3)2 = Ca + 2HCO3 2HCO3 = CO3 + H20 + CO2 If heated up to approximately 80oC CO3 + Ca = CaCO3 If heated above 800C CO3 + H20 = HCO3 + OH Mg + 2OH = Mg(OH)2 Hence if sea water in the evaporator is heated to a temperature below 80oC calcium carbonate predominates. If it is heated above 80oC then magnesium hydroxide scale is deposited. Sodium Chloride 32230 to 25600ppm -generally ignored Soluble below 225000ppm forms a soft encrustation, free ions promote galvanic action. It is unlikely to precipitate and is easily removed Supersaturation This is where the concentration of dissolved salts exceed their solubility at the particular temperature encountered and precipitation begins to occur. When deposition occurs under these conditions heavy scale deposits can rapidly build up and lead to a loss of heat transfer efficiency. Scale deposition due to supersaturation is often localised in areas of elevated temperature such as heat transfer surfaces in heat-exchangers. This is because of localised over concentration of salts with respect to the temperature of the thin water layer at the surface of the metal. Scale deposition can therefore occur on heat-exchange surfaces even when the conditions in the bulk of the water are not scale forming. FINALLY SELECTED GENERATOR VACCUM VAPOUR COMPRESSION FRESHWATER GENERATOR MAKER.. ALFA LAVAL TYPE.. ORCA OFFSHORE SERIES CAPACITY20-70m3/per day vacuum vapour compression is the efficient method of production of fresh water for both drinking and other use. by using this method we can convert the sea water in to fresh water by vacuum distillation process using electricity. The system has simple compact designee made from titanium heat exchanger plates with combined fresh water and feed water system. the system has low maintance cost any work on start and forget operation .and can produced very high quality of fresh water . BASIC Equipment. titanium plate heat exchanger for the combination evaporator and condenser stainless steel distiller shell, air ejector freshwater pump compressor UL approved panel built in freshwater quality monitoring system. ADDITIONAL Equipment fresh water pH adjustment filter. silver-ion or we can say UV sterilisers VACCUME DISTILLATION PROCESS. vacuum distillation is the process use to convert sea water in to fresh water. by this process constant supply of fresh water with low salinity level and be achieved with continuous controlling the water quantity. WORKING PRINCIPAL . 0feed water enter in to the lower section of the plate packs. plates is warmed by heating medium, heating medium is either a jacket water cooling medium or a closed circuit heating medium water is then evaporated at 40-60 degree centigrade in the vacuum of 85-95 % the vapour produces is raised between the plates in the middle section of plate pack. At this point seawater is almost completely removed. these droplet falls back in to the brain sump by the gravity at the bottom of the fresh water generator. only the clean fresh water can enter in to the condenser section and the water is cooled by flow of sea water. at that point vapour is condensed in to fresh water and pumped out by the fresh water pump. GHARP SHOWS THE % TONS PER DAY PRODUCTION Technical specifications (standard units without optional equipment) Water maker type ORCA Offshore 20 ORCA Offshore 30 ORCA Offshore 40 ORCA Offshore 50 ORCA Offshore 60 ORCA Offshore 70 Length (L) mm/inch Width (W) mm/inch Height (H) mm/inch Dry weight kg/lbs Operating weight kg/lbs FW pump motor kW/hp Brine pump motor kW/hp SW pump motor kW/hp (option) Circ. pump motor Electric power (kW installed) Power consumption kwh/m3 fresh water Fresh water quality Dimensions *) THE DRAWING SHOWS ORCA OFFSHOREE SERIES WITHOUT OPTIONS 2450 / 96 2150 / 85 2400 / 94 3700 / 8175 3865 / 8521 1.3 / 1.7 1.3 / 1.7 12.5 / 1 1.9 / 2.6 78.5 18 WHO standard, less than 5 ppm NaCl 2800 / 110 2150 / 85 2400/94 4000 / 8818 4185 / 9226 1.3 / 1.7 1.8 / 2.4 12.5 / 17 3.6 / 4.9 81 18 SLOW SAND FILTER (SSF) FOR THE REMOVAL OF HEAVY METAL. Slow sand filters (SSFs) are probably the most effective, simplest and least expensive water treatment process. Micro-organisms and other particulate materials are effectively removed by SSFs. Considerable development has been done on SSFs with respect to particle removal, but only a few works have been reported in the context of the removal of heavy metals which are a severely toxic pollutant of surface waters. No extensive laboratory or pilot studies have been carried out to determine the performance or the mechanisms of removal of heavy metals by SSFs. This research is concerned with an experimental investigation of the removal of heavy metals from surface water by SSFs. Four laboratory scale SSFs were built and run according to standard design criteria. Removal of four common heavy metals [copper (Cu), chromium (Cr), lead (Pb) and cadmium (Cd)] were monitored. The filters were fed synthetic water made from tap water mixed with settled sewage, and each filter was dosed with one of the heavy metal salts. The concentrations of Cu, Cr, Pb and Cd in the influent were selected as 10 mg/l, 100 ÃŽÂ ¼g/l, 60 ÃŽÂ ¼g/l, and 100 ÃŽÂ ¼g/l respectively considering their relative toxicity and WHO guidelines in drinking water. Settled sewage was added to vary the total organic carbon (TOC) of the feed water. The reduction of heavy metal concentrations were monitored at various TOCs, filtration rates and filter bed depths. The results showed that SSFs succeeded in removing heavy metals from water. The removals of Cu, Cr, Pb and Cd at the conventional flow rate and filter depth are 99.6,97.2,100 and 96.6 % respectively. The results also showed that an increase in TOC in the feed water improved metal removal while increases of flow rates caused a decrease of the removal of metals. The removal of heavy metals also decreased with a reduction in sand bed depth. The optimisation of design parameters for SSFs for the removal of heavy metals depends on the individual heavy metal and on the TOC content of the feed water. Model equations were developed for, and linear correlation was observed between each of the three control parameters and the removal of the selected metal. The removal of heavy metal by SSFs was achieved through the combination of a number of mechanisms. Settlement, adsorption to both sand and organic matter and microbial WORKING PRCEDURE slow and sand filter work through the formation of a layer know as hypogeal layer or schmutzdecke .hypogeal layer contain microorganism that remove bacteria and trap condiments particles.it consist of bacteria,fungi,portozoa,rotera and a range of aquatic insect larva. the hypogal layer provides effective purification in potable water treatment. as the water passes through the hypogeal layer particles of foreign matter are trapped in the mucilaginous matrix and dissolved organic material is adsorbed and metabolised by bacteria, fungi and protozoa. Water produced form a well managed slow sand filter is free from heavy metals and other hazards. Slow sand filter are simple, are easily used by small systems, and have been adapted to package plant construction . Slow sand filter are similar to single media rapid-rate filters in some respects, but there are crucial differences in functional mechanisms(other than the obvious difference in flow rate): the schmutzdecke removes suspended organic materials and microorganisms by biodegradation and other biological processes, instead of relying solely on simple filtration or physic-chemical sorption. Advantages of slow sand filtration include its low maintenance requirements (since it does not require backwashing and requires less frequent cleaning) and the fact that its efficiency does not depend on actions of the operator. However, slow sand filters do require time for the schmutzdecke to develop after cleaning, during which the filtration performance steadily improves; this interval is called the ripening period. The ripening period can last from six hours to two weeks, but typically requires less than two days. A two day filter-to-waste period is recommended for typical sand filters . Since few remedies are available to an operator when the process is ineffective, slow sand filtration should be used with caution and should not be used without pre treatment or process modifications unless the raw water is low in turbidity, algae, and colour . Package plant versions with a granular activated carbon layer located beneath the slow sand filter can absorb organic materials that are resistant enough to biodegradation to pass through the schmutzdecke. When used with source water of the appropriate quality, slow sand filtration may be the most suitable filtration techno logy for small systems (6). Slow sand filtration has demonstrated removal efficiencies in the 90 to 99.9999% range for viruses and greater than 99.99% for Guardia FILTER DISCRUPTION. Square tank Media depth: 2-3 ft Surface area: Filtration rate: 2-10 gal/min-ft2 Flow through filter: 350-3,500 gpm Backwash frequency: every 24 houre CALCULATION We have required maximum 40000 litter per day production per day. and the filtration rate of this filter is max 51000 litter per day which fulfil our requirement. and we have to put two filter in parellal for the standby and maintaince purpose. So that if one filter stop working we can use the other standby filter to run the system as per requirement. IMPORTANT POINTs there is one bypass line in slow sand filter before the water enter in to the sand filters. and this bypass meet the discharge line of distilled pump. The reason for this bypass is that if the ship is in the sea we can open the bypass valve and the fresh water then straight go to the mineraliser unit. because in the roiling and pitching condition the slow sand filter does not work properly the sand filter unit is completely fixed with proper fitting. so that when the main engine runs it does not move from his place. one the important is that the system will take at least 2 day to start working .so for days the ship master has to arrange some external sources of drinking water. CLEANING METHOD There is two method of cleaning of sand filter 1. the top few millimetres of fine sand is scraped off to expose a new layer of clean sand. Water is then decanted back into the filter and re-circulated for a few hours to allow a new Schmutzdecke to develop. The filter is then filled to full depth and brought back into service 2. The second method, sometimes called wet harrowing, involves lowering the water level to just above the Schmutzdecke, stirring the sand and thereby suspending any solids held in that layer and then running the water to waste. The filter is then filled to full depth and brought back into service. Wet harrowing can allow the filter to be brought back into service more quickly. POSITION. we can fit the sand filter before the discharge of distilled pump. CHEMICAL TREATMENT. VAPTREAT. chemical known as vaptreat is add in to the system before the point where sea water is going inside the system .because this chemical make the sea water soft. IMPORTANT PROPERTIES Odour: Odourless Appearance: Liquid, pale yellow, soluble in water Contact with eyes: Mildly irritating to eyes Contact with skin: In cases of severe exposure, irritation may develop Inhalation: Vapours or aerosols may cause irritation of eyes, nose and respiratory tract Ingestion: May cause gastro-intestinal disturbances MINERALISER AND CHLORINE UNIT After the discharge of distilled pump the water then pass through the mineraliser after the mineraliser chlorine is added to the water. capacity of mineraliser=3800liter/hour capacity of chlorine unit.=3800liter/hour PUMPS REQUIREMENTS Ejector Pump The ejector pump is a single-stage centrifugal pump which supplies the condenser with sea water and the brine/air ejector with jet water as well as feed water for evaporation. Fresh Water/Distillate Pump The single-stage centrifugal fresh water pump extracts the distillate from the condenser and pumps it to the fresh water tank. POSITION OF EJECTOR PUMP The pump is fitted after the suction of low sea chest. because at the low sea chest suction there is no oil present .and is the best point of taking the main sea water suction . TYPE OF PUMP. TEHNICAL DATA CASING.. Cast iron, Nodular cast iron, Bronze, Stainless steel IMPELLER.. Cast iron, Bronze, Stainless steel MAXIMUM CAPACITY.850m3 per hour MAXIMUM DELIVER HEAD105M MAXIMUM LIQUID TEMPERATURE120 CENTIGRADE MAXIMUM PRESSURE.1000KPa MAXIMUM SPEED3600 rpm Salinometer The salinometer continuously checks the salinity of the produced water. The alarm set point is adjustable. salinometer continuously check the quality of the distillate, a salinometer is provided at the outlet side of the distillate pump. If the salinity of the produced fresh water exceeds the chosen maximum value, the solenoid valve is activated to automatically dump the distillate to the bilge and an alarm is sounded Control Panel The control panel contains motor starters, running lights, salinometer and contacts for remote alarm. DISTILLED WATER TRANSFER AND DISTRIBUTION Each fresh water generator distillate pump discharges through a salinometer and a flow meter. Positioned before the flow meter is a solenoid valve. This opens when the salinometer detects too high a salinity level, diverting the distillate pump output to the bilge. The discharge from the FW generators flows to either the distilled water tank which is situated in the steering gear room on the starboard side though inlet valve or to the fresh water tanks which are both situated on the port and starboard sides of the steering gear room. The distilled water tank supplies water to the boiler feed water tank via valve Fresh water produced in the generator that is to be used for domestic purposes is directed through a mineraliser and a chlorination sterilising unit before entering the fresh water tanks. The fresh water tanks supply water to the d

Cash for Good Grades

Cash for Good Grades Sometimes parents think of kids school work as their jobs. But adults get paid for their work so why shouldnt students get paid? Studies show paying kids to get good grades raises their grades,attendance and the graduation rate. Students will put in more effort when they are getting rewarded for good work.This is why paying students for getting good grades is a great idea. Cash for good grades would be a great way for students to get a head start in working for pay. Kids would be able to appreciate school more and perform good on tasks for rewards.ÂÂ   In an article about cash for good grades it reads,Cash for grades can jump start students motivation by providing real world rewards for efforts and performanceLindsay, Samantha. (How to Start Paying Students for Good Grades Effectively). This gives kids a real world experience of being rewarded for good performance. It gives them a jump start at the adult life by teaching them that they perform good on task that they will be rewarded. With this being said children will be more successful and have better attendance in school. If it raises grades and creates good attendance,paying children for school is a great idea. Paying children for school will definitely encourage students to keep their grades up. If you were getting paid to come to school and do better wouldnt you put in extra effort? With that being said This article states,There have been studies that experimented with paying students to attend and do well in school. The rate of students missing 15 or more days dropped 10 percents Studies show paying kids will encourage them to stay in school and keep their grades up. The money will encourage them to keep doing good in school and succeed to graduation and possible enroll in college if they want to. the promise of money for grades increases the students drive for success and good marks soon follow. When students get paid for their good grades they try better in school. They give it their best and try to get get good grades, because they can do whatever they want with their money. The students like it better if they are rewarded. It makes them feel better and that they are progressing. Money also excites kid before they get to school. It excites everybody because if you dont have a job chances are you dont regularly have money and cant buy the things you want Cleveland local news interviewed a student that says, Im excited to get the money. It makes me want to come to school on time.Some kids dont have money and this will help them (Cincinnati High School Paying Students To Come To School). Kids will want to show up to school and make it appoint to make sure they make As and Bs in all of their classes. This help kids who are less fortunate and live in poverty. In some places like Memphis one in three families live in poverty and paying their students small portions for good grades will help them. Its great because it will give kids some cash and parents who live in low income housing, etc can save their money up. Money will also motivate students to do better in school. With that being said ,a quote from WREG.com news channel 10 students say, Sometimes its the mindset and money motivates people. Weve received about 9,000 over the course of 3 years. (Memphis Program Paid Students for Good Grades and Their Parents to Get Jobs). This would also be grade for students planning to head off to college after high school. They could have a head start and have money saved up from high school and be able to pay for a portion of their college with the money they receive.This would also encourage students to maintain a A-B average.Salespeople often get bonuses for high sales numbers, so why not apply this same philosophy to your student in hopes that the potential for income increases effort? Paying students for good grades can help kids save up money for college,excite students, make students actually want to come to school daily ,and give students a head start in real world getting paid for good,well done work. It incentivizes them to maintain high grades. Its a great source of motivation.This is why paying students for good grades is effective. Works Cited Cash for Good Grades. N.p., n.d. Web.Http://www.facebook.com/wreg3. Memphis Program Paid Students for Good Grades and Their Parents to Get Jobs. WREG.com. N.p., 12 May 2015. Web. 09 Feb. 2017. Https://www.facebook.com/923thefan. Cincinnati High School Paying Students To Come To School. CBS Cleveland. N.p., n.d. Web. 09 Feb. 2017. Lindsay, Samantha. How to Start Paying Students for Good Grades Effectively. How to Start Paying Students for Good Grades Effectively. N.p., n.d. Web. 09 Feb. 2017.