Diamond Light Source (DLS) is undertaking a programme of developing additional photon beamlines to be added to the existing facility. Operating in the UK, DLS is subject to the Ionizing Radiation Regulations, (IRR99) and having been elected to follow the path of generic prior authorization, DLS is obliged to implement a personnel safety system that conforms to the Approved Code of Practice. In addition, DLS has strived to apply EN61508 to the management and design of the system. This presentation will explain the constraints, design elements and the process that we have undertaken to implement each new safety system and its incorporation into the existing system.