Solenoid valves integrated into the design of emergency shutdown valves (EDS) used in industrial process systems can tend to bind, i.e., to become stuck in one position, when not moved for long periods of time. This binding, also known as failure due to excessive stiction, has significant negative impacts on the valve’s reliability and safety performance. It is a serious and costly problem normally addressed by expensive and time-consuming proof tests which typically have required a process shutdown to perform testing. This paper describes an effective, alternative in-service testing prptocol, known as valve stroke testing, which verifies whether or not the solenoid valve is stuck in position. It recommends a best practice procedure for implementing the valve stroke test and provides a quantitative example of how valve stroke testing significantly improve safety performance.
Would you like to access this content?
No problem. You just have to complete the following steps.
You have completed 0 of 2 steps.
You must be logged in to view this content. Log in now.
Purchase Technical Presentation
You must purchase this technical presentation using one of the options below.
If you already purchased this content recently, please click here to refresh the system's record of ownerships.
|Credits||0.5 Use credits|
|List Price||$25.00 Buy now|
|AIChE Members||$15.00 Buy now|
|AIChE Undergraduate Student Members||Free Free access|
|AIChE Graduate Student Members||Free Free access|