Cooling Tower Safety and Maintenance

Aligning the treatment of management and the remains water of the procedures is principal with the safety of turn of cooling and to follow of EfficiencyThe is an important recall of the need for all the companies which use turns of cooling, to adopt and maintain diligent in their programme of treatment of maintenance and water. Why? because what is concerned is a healthiness and a safety of workman of companies, the reputation of the company and operational effectiveness; those can be clearly affected by the not very sure state of a simple tower of cooling. In 2001 an important world automatic manufacturer tested a tragedy when four of its employees of maintenance of equipment became sick with the symptoms similar to pneumonia which finally claimed the lives of two. The cause - the disease of légionaries caused by the bacteria of Legionella found in one of the turns of cooling of process of manufacturers. The company quickly moved to lead a "analysis of cause" by inspecting ! its turns of cooling in the whole world to identify how systems were maintained and to determine the best practices as regards maintenance. This finally led to the establishment of the process of monitoring and maintenance with a class of the world which ensures such a tragedy will ever be repeated with the company. How a HappenInterestingly can of tragedy of Legionella, when somebody becomes sick more of a not very sure tower of cooling it is not often the result of the obvious negligence of a company; rather, it is typically the result of a company not having a clear arrangement of the need for their programme of treatment water to be in the alignment of an effective programme of maintenance of turn of remains management and cooling. While it can seem obvious that if the quantity of remains inside a tower of cooling exceeds the established biocide proportioning, the request placed on proportioning will be quickly consumed and will have little impact on the bioactivity. In! other words, the remains and the bioactivity occurring in a t! ower of cooling can overpower chemical proportioning. It is well-known and important to remember that the turns of cooling are the very effective purifiers of air; something which derives after a tower from cooling is likely to get caught in its outline and to be suck-in. When organic remains such that the seed of poplar, the sheets, the insects, pollen, the grass, the birds and their droppings, etc enter water and break up, it with the relatively hot temperatures of water create a nutritive rich environment for the bacterial growth including/understanding Legionella. Moreover, it is important to identify that if the volume of remains of decomposition exceeds the capacity of chemical proportioning to provide the order, the tower of cooling will develop silently dangerous even while the proportioning of chemical continuous. The fact of the matter is that it is easy for companies to develop a false direction of safety which their turns of cooling is sure one or the other because they ! treat water themselves or, because they rented a service of treatment water to establish the levels of proportioning which should ensure the tower are sure. In one or the other case, if the organic remains management is not in the alignment of the levels of proportioning of treatment water and integral made with the process of maintenance, it does not have there a greater probability of the tower becoming a health and a risk as regards safety. It does not import how large or small a company or a tower of cooling is; the bacteria including/understanding Legionella does not distinguish - it will thrive about it in turn of cooling badly controlled! An obvious question " what is the report/ratio necessary of the chemicals of treatment to water with that of the remains load inside the tower of cooling to ensure the safety of turn of cooling?" Although the question is obvious, the answer is not. Organic remains are drawn in turns of cooling in various concentrations depending on ! the place and the period of the year. Each type of remains pla! ces a re quest different on biocides and the inhibitors from balance being proportioned in water; therefore, there is no known report/ratio which will hold the constant for each turn of cooling. However, it is sure of saying that if you do not deploy the diligent procedures of maintenance which claim the prevention of the organic remains specifically to enter the tower of cooling or its periodic displacement, more chemicals of treatment water will be requested to maintain it sure. Some can ind iquer, « charger la tour vers le haut avec des produits chimiques pour assurer la sûreté », cependant, les directives fédérales et de l'état EPA placent des restrictions sur la quantité et le type de produits chimiques qui peuvent être employés, donc l'utilisation seul du traitement chimique n'est pas la solution. En outre, ajouter des produits chimiques pour excentrer des pratiques en matière d'entretien pauvre est un raccourci qui fera peu pour empêcher encrasser et obstruer de la suffisance,! les tamis, les valves de coup vers le bas, le réfrigérateur et les échangeurs de chaleur et pourrait par la suite mener aux problèmes de salubrité et de sûreté et à une réduction d'exécution d'équipement. Bien que la réponse au rapport chimique à la question de débris ne soit pas évidente, la réponse à la façon garder une tour de refroidissement sûre est claire en cristal et peut être simplement énoncée - « garder la tour de refroidissement exempt des débris et déployer un bon programme de traitement à l'eau et votre tour de refroidissement fonctionnera sans risque et efficacement. » Ceci peut ressembler à d'une simplification finie, mais la réalité si vous gardez les débris hors de la tour de refroidissement, vous enfoncerez les bactéries soutenant la chaîne alimentaire. En plus, quand vous chimiquement tre at the water you create an environment non-conducive to bacteria habitation. In short, when you eliminate food and shelter for bacteria it won't take-up residence in y! our cooling tower!How to Keep a Safe Cooling TowerIn recent ye! ars ASHR AE has established excellent recommendations for cooling tower maintenance known as Guideline 12. In addition to recommending maintenance activities, it also calls for establishing procedures that are measurable. Although ASHRAE guidelines are excellent, companies must ultimately weigh the operational and economic realities of any maintenance procedure they deploy. As the old saying goes "There's more than one way to skin a cat". If on the one hand maintenance procedures are too frequent, cumbersome or complex, it commonly results in more downtime, lost productivity and higher maintenance costs. Furthermore, the natural human tendency is to take shortcuts to quickly complete an unpleasant job - often times with unsatisfactory results. Conversely, if the intervals between maintenance are too long, it may be more cost effective, but the condition of the cooling tower at each interval may be less than desirable and potentially place maintenance workers, employees, tenants and t! he public at risk. So the answer largely lies somewhere in the middle where water treatment and managing debris in the tower come together.Today, companies have many options available to them for managing debris; they include a variety of water based filtration technologies and air intake filtration technology. Water filtration can help manage waterborne and other debris after it gets into the cooling water while Air intake filtration technology is highly effective at stopping airborne debris from getting into the tower by filtering the air as it enters the system. . Furthermore, air intake filtration can be used in glycol based cooling systems and on other air-cooled condenser systems to keep airborne debris out of the coils, enabling optimal cooling efficiency.When determining what maintenance and debris management technology to use, it is important to first determine what the source of debris is. If the source of debris is waterborne (e.g.; sediment, algae from pond or r! iver, or water with high dissolved solids content), water filt! ration i n combination with a good water treatment program is typically the best solution and will protect the chiller and heat exchanger from scaling and fouling. If on the other hand, the source of debris is airborne related (cottonwood seed, insects, leaves, pine needles, paper, birds & droppings, harvest chaff, construction debris, etc), then water filtration systems will not stop the debris from getting into the cooling tower (especially the fill). For airborne debris related problems, the best solution is to prevent the debris from getting into the system by using air intake filtration technology that filters the air as it enters the system. Air intake filtration in combination with a good water treatment program is highly effective in stopping the kind of debris that clogs strainers, blow down valves, fill, chillers and heat exchangers - In short, air intake filtration effectively protects the entire system. In extreme cases where both waterborne and airborne debris is problem! atic, both air intake filtration and water filtration in combination with a good water treatment program may be required in order to keep the cooling tower safe and operating efficiently.Personal SafetyNo matter what procedures are adopted in maintaining cooling towers, personal safety precautions must be integral to the maintenance procedures. Best practices require workers to wear respirators, gloves and protective clothing to help prevent exposure to bacteria, especially Legionella. Important Note: cooling water doesn't have to look dirty to be dangerous - just because the water is clear doesn't mean it's clean or free of bacteria - Every cooling tower can harbor bacteria. Always, always take precautions because unless the water is routinely tested for Legionella and other bacteria, the bacteria will never announce its presence until it's too late.Consider the Costs of a Sick TowerCompanies that don't take appropriate precautions and insist upon diligent cooling tower ma! intenance procedures put not only their employees health and s! afety at risk, but also their business and reputation. Consider the cost of a single cooling tower related Legionella incident:Reduced employee moral and productivity due to an unsafe work environment. Negative customer perceptions of the company and their willingness to buy goods & services should a Legionella outbreak become public. (especially risky for food and related processors) Loss of income to families when a loved one becomes ill or die from Legionella. High cost for litigation which can follow. Higher company insurance costs when claims due to job related sickness or death occur. In comparison to the cost of a proactive maintenance initiative, the incidents listed above when considered individually or collectively carry staggering cost. Follow a LeaderSo you may be wondering exactly how the major automotive company mentioned at the beginning took a tragic situation and turned it into a world-class maintenance program. They formed an oversight committee sponsored by execu! tive management, that was charged with the responsibility of working with consultants, water treatment professionals and maintenance employees to establish a global water management program that encompasses specific maintenance tasks, maintenance methods & procedures, maintenance schedules, management accountabilities and reporting guidelines at the facility level. The representative at each facility is accountable to a regional representative who reports activities and results to the oversight committee. The establishment of the oversight committee and its global management network ensures uniformity of their program plus, gives the company a vehicle to quickly implement changes and enhancements that provide continuous improvement to their global water management program.It Doesn't Take Rocket ScienceIt simply requires that companies using cooling towers "step-up to the plate" and initiate proactive and on-going maintenance procedures that align effective debris management! technology with effective water testing and treatment techniq! ues beca use when these elements are in alignment, the result is a safe, healthy and efficient operation.Air Solution Company developed and patented the first Air Intake Filter specifically engineered to mount to the outside of cooling towers and other HVAC equipment for purposes of stopping the debris before it entered into the system. Since that time, Air Solution Company has been manufacturing and has introduced a variety of other innovative filter systems including its new Fine Mesh Filter which is engineered for use on small and medium size refrigeration coils and machine fan intake housing units. Air Solution Company Randy Simmons is with Air Solution Company, author of articles can be reached at http://www.airsolutioncompany.comArticle Source: http://EzineArticles.com/?expert=Randy_Simmons
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