The audit and performance appraisals of the working of Public Sector Enterprises have been placed under the jurisdiction of Audit Board, functioning under the Comptroller and Auditor General of India. The Deputy Comptroller and Auditor General of India (Commercial) is the Chairman of Audit Board. The Director Generals and Principal Directors responsible for the audit of various CPSUs are members of the Audit Board. The Board approves the topics recommended for performance audit. It also approves the guidelines, audit objectives, criteria and methodology for conducting major performance audits. The Board finalises the stand alone performance audit reports after discussions with the representatives of the Ministry and Management. The Office of the Principal Directors of Commercial Audit and Ex-officio Member Audit Board, Chennai conducts the audit of various Central Public Sector Enterprises (CPSEs) and Central Autonomous Bodies (CABs) in the southern region.