Program selection factors treatments

First, therefore, it may be useful to consider, for any cooling system, some of the external and internal factors that significantly influence the ultimate selection and application of a potentially suitable chemical treatment program. These factors can be considered to be a form of checklist. 

FIGURE 59-1. Pharmacotherapy treatment algorithm. A select population of individuals, based on body mass index (BMI) and waist circumference (WC) together with concurrent risk factors, may benefit from medication therapy as an adjunct to a program of weight loss that includes diet, exercise, and behavioral modification. (CHD, coronary heart disease DM, diabetes mellitus, HTN, hypertension INC WC, >40 inches for males and >35 inches for females LCD, low-calorie diet.)... 

NOTE The consumption of chemical treatment in a cooling system is directly proportional to total water consumption (for any given operating conditions, such as cycles of concentration), but the selection of a suitable type of chemical program (e.g., chromate, alkaline zinc) is based on a combination of factors, including system metallurgy, operating conditions, anticipated or actual... 

In some marketplaces and under many contract bid situations, there is an unfortunate tendency by some buyers to purchase water treatment programs based solely on the chemical product unit price, or to select only the lowest priced vendor, without consideration of any other factors. This practice is undertaken for various reasons. It may be, perhaps, because of cultural differences in negotiating practice, or because of simple ignorance of the value of the service supplied, or the belief that all chemical formulations are the same, or, alternatively, a failure to comprehend the concept of matching an overall and comprehensive service program specifically to a customer s needs. 

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