(20 min.) Case Study: Single Shot Balancing of High Speed Oxygen Compressor

Rao Vamsidhar, Assistant General Manager, Vizag Steel (RINL)


Rotating machinery generally exhibit 1x vibration and the common cause for the 1x vibration is unbalance. During in-situ balancing of critical high speed rotating machinery, the trial weight location, weight should be selected by observing the vibration behaviour from different locations of the shaft train and taking sufficient data. The following case study discusses about the successful single shot balancing of a high speed Oxygen compressor in an Integrated Steel Plant in India.


Rao Vamsidhar is a Maintenance Manager having a rich experience of 20 years in the rotating machinery field. He has begun his career in Visakhapatnam Steel Plant, India in 1998 and successfully progressed and elevated to the position of Assistant General Manager in 2016. Throughout his career he is involved in the maintenance, condition monitoring and vibration analysis of high speed rotating machinery. He completed his Bachelors degree in Mechanical Engineering from Andhra University and Master of Business Administration (Finance) from ICFAI UNIVERSITY, INDIA. He is a certified Category IV vibration analyst and Asset Reliability Practitioner (ARP CAT I) from Mobius Institute and a member of Society for Maintenance & Reliability Professionals (SMRP). He presented case studies in IMVAC MIDDLE EAST 2017 AND IMVAC EUROPE 2017 and CBM CONFERENCE ABUDABHI 2019. He has been awarded Jawaharlal Nehru Award, highest recognition for best performance in Visakhapatnam Steel Plant in the year 2015. He is the 1st Indian to be certified as Cat IV vibration analyst from Mobius Institute in the year 2015.