CTI ATC-128 (14)

This code applies to wet and wet/dry (parallel path), open and closed circuit cooling towers, mechanical or natural draft. The equipment being tested is the cooling tower consisting of the structure (individual cell or tower) with the heat exchange surface, water distribution and collection system, and mechanical equipment in the case of a mechanical draft tower. If other sound producing equipment must be included in or excluded from the equipment being tested, particular reference shall be made to this effect in the test protocol and in the test report.