Question 44General Subjects - 1st Asst/Chief

The correct answer is C) attemporator in the steam supply piping. An attemporator is a device used to precisely control the temperature of the steam supply to a process, such as the saltwater feed heater in a flash type evaporator. By adjusting the attemporator, the operator can manipulate the temperature of the steam flow, which in turn controls the temperature of the feed water entering the evaporator. This allows for precise control of the evaporator's operating conditions. The other answer choices are incorrect because they do not directly control the steam temperature. A sensor wired to the salinity dump valve (A) would not affect the steam temperature, a pressure regulator (B) would control the steam pressure but not necessarily the temperature, and a thermally actuated bypass valve (D) would bypass the steam flow but not necessarily control its temperature.