•  Chief Inspector of Steam Boilers (CIB)

•  National Thermal Power Corporation (NTPC)

•  Nuclear Power Corporation (NPC)

•  Lloyd's Register Industrial Services (India) Pvt. Ltd., (LRIS)

•  Chief Controller of Explosives (CCOE)

•  Engineers India Limited (EIL)

•  Neyveli Lignite Corporation Limited (NLC)

•  EVT (West German Consultant to NLC)

•  M.N. Dastur & Co Ltd. Chennai

•  Davy Power Gas Ltd., Bombay (DPGL)

•  Metallurgical & Engineering Consultants (India) Limited (MECON)

•  Mannesman Demag - Germany (MDH)

•  Indomag Steel Technology (IST)

•  Projects & Development India Limited (PDIL)

•  Kinetics Technology India Limited (KTI)

•  TATA Consulting Engineers (TCE)

•  Beraeu Varitas Industrial Services (BVIS)

•  Bax Counsel Inspection Bureau (P) Ltd., Mumbai.