Where can the operating pressure of exchangers typically be found?

The operating pressure of exchangers is typically found on the nameplate. The nameplate is a metal tag that is usually attached to the equipment, and it contains important information regarding the operational specifications and capabilities of the exchanger, including details such as the maximum allowable working pressure (MAWP) and temperature ratings. This information is critical for ensuring safe operation and compliance with engineering standards.

While other options may provide relevant information, they do not specifically indicate the operational parameters of the exchanger like the nameplate does. For example, permits and maintenance logs may contain general operational guidelines or historical data, but they do not typically list the current operational pressures. The supervisor may have knowledge about the exchanger's functioning, but this information is ideally referenced from the nameplate for accuracy and reliability.