I was wrong, it's not anyone, but only certain organizations.

2) Who can conduct inspections?  

Public institutions, federal agencies, political parties, universities, and civil society organizations may review and analyze the source code, subject to prior scheduling. Fourteen institutions are authorized to monitor the audit phases of the voting machines and electoral systems. They are:

political parties,
federations and coalitions;
Brazilian Bar Association;
Public Prosecutor’s Office;
National Congress;
Office of the Comptroller General;
Federal Police;
Brazilian Computer Society;
Federal Council of Engineering and Agronomy;
National Council of Justice;
National Council of the Public Prosecutor’s Office;
Federal Court of Accounts;
National Confederation of Industry, other members of the Industry System, and corporate entities belonging to the S System;
Brazilian private, nonprofit entities with a proven track record in oversight and transparency of public administration, accredited by the TSE; and
information technology departments of universities accredited by the TSE.