I am advised by Revenue that the total number of mobile x-ray scanners in operation by Customs Officers is currently three. Two of these are mobile container scanning systems, while the third is a mobile baggage scanner. The total number of mobile x-ray scanners is sufficient for current day-to-day operations but is kept under constant review. Revenue is currently in the process of selecting a replacement container scanner by competitive tender as the oldest container scanner is nearing the end of its service life. Revenue implements a normal replacement and upgrade strategy and continuously reviews its detection technology requirements taking account of developments in those technologies.