Soon after installation of manual valve postion indicators, this company timely discovered its first line-up error, which would have led to costly contamination in the past. With estimated costs of contamination of €300.000 – €500.000, a large part of the investment thus was earned back quickly.
A large Spanish refinery with a large tank farm storing approximately 2.500.000 m3 of petroleum products in various qualities.
The refinery and tank farm were built in the ‘70’s. The equipment was aged and automation level was very low. Most valves were manually operated and manual operation was even prescribed by company policy in many occasions.
All valve line-ups operations were performed manually. Human errors in valve line-ups had resulted in incidents in the past, when wrong product was offloaded. The costs of these incidents were
The company searched for a way to improve operations and avoid human errors. An investment to automate about 1.400 valves in its tank farm was not an option. So they were searching for other ways to increase the control over their manual operations.
The company decided that valve position indication would offer the right solution. After a pilot of 2 years, in which various alternatives were evaluated, the choose the VPI position indicator as the most reliable solution. They installed around 1.400 VPI’s in total to get a complete overview of all valve positions in the field. Based on all these inputs their control system could ensure correct status of all valves before commencing loading operations.