Previously Juha Yli-Petäys and Sami Nousiainen discussed about challenges of offshore production in part 1 and introduced methods to make asset management and maintenance planning more efficient on these remote locations in part 2. There are efficient technologies available which can optimize the plant shutdown time as well optimize the needed visits in the platforms. Real time condition monitoring, using open technology asset management tools and analyzing the condition monitoring information works very efficient way and the following examples describes better this idea.
An intelligent control-valve positioner gathers information on the valve performance throughout its lifecycle and during the normal operation. Modern valve controllers store all this data in the device’s own memory. This data can be accessed not only on site, but also remotely. Basically, there is no difference between processing the diagnostics data on-site or from thousands of kilometers away. While remote condition monitoring does not fully replace inspection “footwork” done on-site, it can focus and improve it. Depending on the application, valves should be regularly tested for tightness, condition of valve coatings, etc. These observation results can be stored in the same system together with the valve controller’s diagnostics data and subsequently the valve diagnostics can create a work order to the ERP for a maintenance check.