Arun Kumar is working with HPCL‐ Mittal Energy Ltd., India, as Head of Operation Excellence and Engineering of high complexity Refinery complex, Guru Gobind Singh Refinery. Has more than 30 years of experience in the areas of erection, commissioning, maintenance, equipment reliability, turnaround planning and execution, troubleshooting and performance improvement of Rotating Equipment, in Process Plant / World Class Oil Refinery. He has presented number of technical papers at international venues and lectured at Turbomachinery and Pump Symposia, including panel discussions. He is advisory committee member of Asian Turbomachinery and Pump Symposium, and also member of Turbomachinery Society of Japan.