Dublin Airport is embarking on its multimillion-euro project to upgrade a security-screening system for passenger baggage at Terminal 1.DAA is kickstarting a massive overhaul of its baggage-handling systems to comply with new explosive detection requirements under EU rules.DAA has previously indicated that the work on the baggage security system at Terminal 1 would begin this year. It’s not due to be finished until 2023.The airport operator has already said that the project at Terminal 1 will be challenging due to spatial and structural constraints.DAA intends to demolish a baggage-handling building between Terminal 1 and Terminal 2, and replace it with a five-storey extension. It will include an extended baggage hall with new equipment, a control room, offices and other facilities. There will also be a baggage conveyor link to the Terminal 2 baggage hall.The DAA indicated in 2017 that the planned overhaul of baggage security systems at Dublin and Cork airports would cost in the region of €13m.It has just applied for planning permission for the development at Terminal 1.