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This video is a technical talk about Testing and Calibration in PSVs with Marcelo Barbosa from Valbrac. We will talk about inter-comparison of standards, online calibration system, calibration bench in PSVs and other subjects related to this important topic. Calibration and maintenance of valves ensure compliance with standards. Safety valves [PSVs] are instruments built to protect pressurized systems and prevent explosions according to NR13.