Shutdown and Blowdown Valve Maintenance
Onshore Condition Monitoring of Offshore Valve Assemblies - Niklas Lindfors and Jarkko Räty - Especially in the offshore sector, there is strong emphasis on minimizing the number of staff working in hazardous offshore environments, without impacting on reliability. At the same time, it is expected that the availability of production and the life cycle costs of process equipment should be optimised. These requirements create the need to improve the capability to analyse control-valve data from offshore applications - to focus and plan service actions well in advance. In other words, to enhance the utilization of existing technologies and increase the use of specialist know-how in order to enable offshore personnel to carry out the required tasks effectively, safely and with minimal labour and disturbance to the process itself. (Go to page 4 to access this information)
Increased Reliability and Safety at Czech Refinery through Partnership in Valve Maintenance - Karel Dvorak and Niko Aunio- In the past, Česká Rafinérská’s strategy has been to carry out turnarounds every four years. This was the first time that the interval was extended to 5 years. After 9 years of operation, some problems were expected, however, on this occasion Česká Rafinérská’s approach was different from that adopted for the previous turnaround. The control valve scope was reduced and the on/off valve scope increased to include overhaul testing based on the SIL classifications. The Metso field survey and Neles ND9000 diagnostics formed the basis for the valve turnaround planning