The purpose of this paper is to describe a new technique for measuring the intensity of the cavitation attack in a piece of hydraulic equipment operating in the field, and to present the results and conclusions of a preliminary trial of this method in a 30,000-kw hydraulic turbine. This technique has been referred to as an accelerated test because the time required for the test run is measured in minutes, and by careful planning the total outage time required for installation and removal of the test plates is short.

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