Can an inspected State Party restrict access during an on-site inspection?
Yes. The managed-access regulation allows an inspected State Party to restrict access of the inspection team to certain parts within the inspection area. This measure allows the inspected State Party to protect its national security interests and to prevent the disclosure of confidential information unrelated to the purpose of the inspection.
Several areas of no more than 4 km² can be subjected to the managed-access regulation, but the total can not exceed 50 km². If the inspected State Party restricts the access to certain areas, it is obliged by the Treaty to provide alternatives for the inspection team to carry out its mandate.