Consider installing a VFD to increase reliability and savings
The Petronor oil refinery is in the north of Spain and is part of REPSOL Group. In 2019, the facility upgraded the driver of a reformer’s draft fan from a general-purpose steam turbine and gearbox to a variable frequency drive (VFD) electric motor.
HC condensate sphere inlet pipe failure investigation
During a normal turnaround and inspection (T&I) of a hydrocarbon sphere, a fatigue failure in the 24-in. inlet pipe riser was discovered. As per the original 2003 design, the sphere serves as a surge tank during pipeline scraping, as well as a backup for a stabilizer during T&I. Each stabilizer has a capacity of 78,000 bpd. However, due to asymmetry in the piping configuration, the sphere typically receives higher flow of 90,000 bpd, with rates sometimes reaching 110,000 bpd as a result of scraping or other activities happening concurrently. The sphere was upgraded to work continuously in 2012 to handle the anticipated additional condensate by adding an overhead gas compressor and a dedicated condensate shipper pump.