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Because of the potential deleterious effects of impurities in water and steam, the current sampling and analytical practices are being critically evaluated, and methods and utilization of analytical data are being improved. To control the corrosion and efficiency loss, particularly in turbines, once-through boilers, reactors, and nuclear steam generators, low parts-per-billion levels of impurities are being sampled and analyzed.
The critical areas reviewed in this presentation are sampling, grab sample, continuous, and in situ analysis; analysis of organics; and utilization of the data for system control and corrosion prediction. Certain improvements and refinements in all these areas are discussed.
steam, water, power system, boiler, turbine, sampling, analysis, chemical control, instrumentation, nozzles, power plants, water quality
Senior engineer, Westinghouse Electric Corp., Philadelphia, Pa.