The SUPPLIER shall provide ITP, which describes activities related to the verification of the quality of implementation. The ITP must include at least the inspection and test activities, references procedures, acceptance criteria, documentation and certificates to be provided. The ITP shall be developed jointly between the SUPPLIER, the CONTRACTOR and the REGULATORY AUTHORITY. The CONTRACTOR and REGULATORY AUTHORITY will define the extent of their participation in the ITP. This is also applicable for major SUB CONTRACTORS.