Project Supervisor Design Process (PSDP) P. Coleman & Associates has extensive experience in construction health and safety and offer PSDP services to help you fulfil your safety, health and welfare responsibilities no matter how big or small your project is. Project Supervisor for Design Stage (PSDP) is a role that must be fulfilled at the design stage of construction projects in Ireland to comply with the Safety, Health and Welfare at Work (Construction) Regulations 2013.  This is to ensure effectiveness in addressing and co-ordinating safety and health matters from the very early stage