Shri S. S. Bajaj has been appointed as Chairman of the Atomic Energy Regulatory Board (AERB) in place of Shri S. K. Sharma who relinquished charge on January 14, 2010 on expiry of his tenure as Chairman, AERB. Prior to this, Shri Bajaj has been serving under Raja Ramanna Fellowship Scheme of Department of Atomic Energy (DAE) and advising various units of DAE on safety issues. He retired as Senior Executive Director (Safety) from Nuclear Power Corporation of India Limited (NPCIL) in July 2007.

Shri S. S. Bajaj, a Mechanical Engineer, began his career with the Department of Atomic Energy in 1969 after completing the 12th Batch of BARC Training School.

His specific areas of work have included reactor safety analysis, system thermal hydraulics, plant transient studies, probabilistic safety assessment, system safety studies and reviews, containment engineering, reactor physics and fuel safety.

He played a pioneering role in successfully establishing a sound infrastructure in NPCIL for safety analysis of Indian Pressurized Heavy Water Reactors (PHWRs), both deterministic and probabilistic. He has been closely involved in the development and validation of several computer codes for safety analysis. He performed several pioneering and definitive safety studies for PHWRs covering plant-wide response to postulated/actual events and to identify preventive/mitigative actions.

Shri Bajaj has been associated with several AERB Committees for design and operational safety review of nuclear power plants. He has also actively contributed to preparation of several regulatory safety codes and guides.

Shri Bajaj is a recipient of the Indian Nuclear Society Award for outstanding achievement in Nuclear Technology including Nuclear Safety and is a Fellow of the Indian National Academy of Engineering.