The Necsa site in South Africa is a multiple facility site with operational facilities and closedfacilities that have been decommissioned or are in a decommissioning phase. The operational facilities include aresearch reactor, isotope production facilities, nuclear fuel development facilities, waste management facilities aswell as a range of chemical production facilities. The decommissioned facilities and facilities that are in adecommissioning phase consist mainly of nuclear fuel cycle facilities. Historical, recent and future events causedor could potentially cause radiological and/or chemical contamination outside facilities. An approach has beenapplied previously whereby cleanup of such contamination has been implemented but without a consistentapproach or criteria, which resulted in a limited ability to verify and demonstrate successful cleaning. Recentdevelopments and regulatory control initiatives resulted in review of the approach and the development of amanagement system to ensure environmentally good practices and management of contamination outsideradiological and chemical controlled areas. The management system was developed based on pre-definedobjectives, principles for site remediation and IAEA guidelines [1], [2] and [3]. The remediation managementprocess as implemented on the NECSA site is illustrated in Annex 1. The principles and main building blocks ofremediation management on the NECSA site are covered in the paper.
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