Object: Electronic Auction - Hiring, Through An Electronic Bidding Procedure, A Specialized Company, Without Dedicating Exclusive Labor, To Provide Calibration Services For Ionization Chambers And Electrometers, In Accordance With Authorization Issued By Casec/Ird/Dpd/Cnen/Ncti And The Technical Requirements Established By The Standards Of The National Nuclear Energy Commission (Cnen) And The National Institute Of Metrology, Quality And Technology (Inmetro), With Metrological Traceability