Study Committee A2 - Power transformers and reactors, or SC A2 for short, focuses power transformers, reactors, and transformer components used in high, medium and low voltage systems. A2 Study Committee Chair: Pascal Müller Secretary: Marc Foata SC A2 addresses topics throughout the asset management life-cycle phases of power transformers and reactors; from conception, through research, development, design, production, deployment, operation, and end-of life. Life management of transformers and reactors, e.g. : • Maintenance philosophies and practices; • Monitoring and diagnostic methods; • Transformer fleet ranking and assessment; • Installation procedures and on-site testing; • Determination of remaining life; • Decisions to repair (on-site or in factory) or to scrap; • Failure codes and statistics; • Guide for failure investigations and post-mortem; • Insulating liquids; • Environmental aspects, especially audible noise; • Disposal of transformers, components and materials. Economic issues, e.g. first cost versus total costs of ownership, models for cost evaluation; Reliability and availability information on power transformers in service determined by surveys of equipment performance on an international basis with periodical up-dating; Impact of accessories on transformer reliability, e.g. bushings, tap-changers and cooling equipment; Promotion and dissemination of Study Committee A2 work, in particular by the organization of workshops.