At CSI ATP tests are carried on vehicle as:
a) single units;
b) groups of transport units.
Single unit test:
Insulating capacity of equipment - Procedures for measuring the K coefficient.
The empty equipment shall be placed in an insulated chamber (tunnel), where the mean temperature of the insulated chamber and of the refrigerated equipment shall throughout the test be monitored, and constant in compliance with specific parameters.
ATP Certification issues
A test report of the equipment tested shall be drawn up for each test by CSI technicians. The document will be sent in sealed envelope to MCTC competent for territory based on the residence of the vehicle owner as reported in the vehicle registration.
Therefore the MCTC in charge will issue the new ATP certifcates.