The organization of the INAA laboratory at the Interfaculty Reactor Institute at Delft, The Netherlands, has been brought in accordance with the requirements of Euronorm EN45001 and ISO guide 25 for quality systems. Procedures, techniques and instructions involved in routine INAA have been fully described and documented, and compiled in a quality manual. The implementation of such a quality system and of its accreditation for an INAA laboratory in a university environment are discussed.