AUDIT SERVICE TO EVALUATE THE WORKPLACE HEALTH AND SAFETY MANAGEMENT SYSTEM OF ELECTRONORTE S.A. AND THE DIAGNOSIS OF COMPLIANCE WITH LEGAL REGULATIONS ON WORKPLACE HEALTH AND SAFETY OF CONTRACTOR COMPANIES - AUDIT SERVICE TO EVALUATE THE WORKPLACE HEALTH AND SAFETY MANAGEMENT SYSTEM OF ELECTRONORTE S.A. AND THE DIAGNOSIS OF COMPLIANCE WITH LEGAL REGULATIONS ON HEALTH AND SAFETY AT WORK OF CONTRACTOR COMPANIES (EXPIRED)