A Level VI Inspection is an inspection for select radiological shipments, which includes inspection procedures, enhancements to the North American Standard Level I Inspection, radiological requirements, and the North American Standard Out-of-Service Criteria for transuranic waste and highway route controlled quantities (HRCQ) of radioactive material.
All vehicles and carriers transporting HRCQ of radioactive material are regulated by the U.S. Department of Transportation and required to pass the North American Standard Level VI Inspection.
Vehicle, drivers and cargo must be defect free by the Level VI Inspection standard before they may leave their point of origin. While en route, the Level VI out-of-service criteria is applied.
A special nuclear symbol decal was developed for vehicles meeting the Level VI Inspection criteria. The decal is affixed at the point of origin of the shipment and removed at the point of destination. It is valid for only one trip.