May 2018

Process Control and Instrumentation

Using valve diagnostics at startup to save time and money

Early detection of valve problems with diagnostics prevents small issues from escalating into major incidents when production starts.

Raymond, S., Emerson Process Management

Early detection of valve problems with diagnostics prevents small issues from escalating into major incidents when production starts. Standard checkout procedures for valves are used whenever a new plant or process starts up, when a renovation or expansion takes place, or when a plant has shut down for periodic maintenance and is being restarted. The purpose of such a checkout is to confirm that new or existing valves are functioning properly.  While many valve checkout procedures have been used for decades, they often miss problems that modern valve diagnostics can discover. The following describes how valve diagnostics work, and provides three examples of how diagnostics found problems th

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