Presently, the ATC-105 publication of CTI is the most popular Acceptance Test Code adopted in India for the verification of guarantee parameters. This code is comprehensive and easy to use. However, Performance Guarantee (PG) testing of cooling towers by CTI licensed testing agencies is limited to a couple of public sector companies in the power sector in India. It is only because of the entry of CTI licensed testing agencies in India that certain anomalies concerning the evaluation method prevailing in the industry have come to light. Apart from this, certain otherfactors related to the condition and operation of the cold end system that contribute to a deviation in the expected CWT have also been brought to light during the course of PG testing in several projects recently. This paper is being presented with an objective to promote the correct interpretation of ATC-105 and its use for the purpose of verification of guarantee parameters of Cooling Towers and also to help understand and eliminate other contributing causes to the deviation in expected CWT. The intent is also to help improve the overall performance of the cold end system. The above topics are covered under two distinct sections.
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