VPC realized at an early stage, the absence of specialized TAB firms in the Greek market. Furthermore understanding the importance of TAB in the Commissioning process, as well as in diagnostics and energy assessing, VPC developed at an early stage in house TAB services. The TAB team has many years of field experiences in different type of projects and all personnel have been trained to the CSA standards. VPC can respond to construction commissioning activities by implementing on site TAB. The company owns all necessary calibrated equipment to perform TAB services and statistical verification.