1Operating organizations include generators of radioactive waste, organizations that carry out decommissioning activities and operators of facilities for the predisposal management of radioactive waste [4].

2INTERNATIONAL ATOMIC ENERGY AGENCY, Predisposal Management of Low and Intermediate Level Radioactive Waste, IAEA Safety Standards Series No. WS-G-2.5, IAEA, Vienna (2003).

3INTERNATIONAL ATOMIC ENERGY AGENCY, Predisposal Management of High Level Radioactive Waste, IAEA Safety Standards Series No. WS-G-2.6, IAEA, Vienna (2003).

4The safety case may be known by different names (such as safety report, safety dossier, safety file) in different States and may be presented in a single document or in a series of documents (see Section 5).

5The term ‘permanent shutdown’, as used in this Safety Guide, means that the reactor has ceased operation and will not be restarted, i.e. it will no longer be used for its intended purpose. Permanent shutdown differs from a planned shutdown (e.g. due to refuelling outage, maintenance, inspection or refurbishment) or an unplanned shutdown (e.g. due to a scram).

6Although ion exchange resins are in fact solids, they are managed along with the carrier liquid in most applications [46, 47]. Resins are eventually separated from the carrier liquid during treatment and conditioning.

7The terms ‘degraded fuel’ or ‘failed fuel’ cover a broad range of conditions, ranging from minor pinholes, to cracked cladding, to broken fuel pins. The nature and extent of failure is an important consideration.

8A Safety Guide on radiological environmental impact assessment is in preparation.

9Although emergency preparedness and response is mentioned specifically under the waste management programme, such arrangements may be part of the overall emergency arrangements for the entire facility. In this case, the waste management programme should make reference to the overall emergency arrangements.