Abstract
Partial Valve Stroke Testing or PVST, is an emerging concept to automatically increase the performance of Safety Instrumented Systems. PVST is a concept where safety-related valves like ESD valves and shut-off valves are automatically tested concerning failure modes that are related to valve sticking and slowing down operation. Current trends in the industry show an upcoming number of dedicated technical PVST solutions by various automation and instrumentation vendors. This paper will discuss practical examples of Partial Valve Stroke Testing in which it appears that SIL 1 rated valves can be upgraded to SIL 2, and off-line proof test intervals which can be extended from 2 to 5 years.
| Original language | English |
|---|---|
| Pages (from-to) | 16-21 |
| Number of pages | 6 |
| Journal | RAMS Asia |
| Volume | 2 |
| Issue number | 1 |
| Publication status | Published - 2007 |