This report reviews past and current experience and provides valuable technical guidance on the production and interim storage of radioactive waste packages. Contents: 1. Introduction; 2. Safety principles and requirements for waste package storage; 3. Production of waste packages; 4. Storage facilities; 5. Operational experience and optimal storage practices; 6. Waste package management options after the licensed storage period; 7. Recommended measures to ensure optimal performance of waste packages during storage; 8. Conclusions; Appendix: Storage facilities in selected Member States.