[en] The radiation field outside a capsule of copper containing approximately 500 spent BWR fuel rods has been calculated. An average burnup of 30 000 MWd/tU and a cooling time of 40 years have been assumed. On the surface of the capsule the gamma dose-rate will be of the order of 17 mrem/h and the neutron dose-rate 40 - 95 mrem/h. Interacting with water, ionizing radiation produces free radicals and oxygen. Energy deposition in water outside the above capsule of copper has been calculated to be 1.10¹⁸ and 3.10¹⁹ MeV, summed up to 10⁴ and 10⁶ years, respectively. The neutron and gamma energy deposition in water in the event of any water getting inside the capsule, has also been calculated. Deposition rate after a cooling time of 40 years will be approximately 1.5.10¹⁴ eV/g H₂O,s and energy deposition, summed up to 10⁴ and 10⁶ years, will be 2.10²³ and 9.10²³ eV/g H₂O, respectively. This is true when the water is not in direct contact with the fuel material. Energy deposition in water outside a capsule of lead containing waste from reprocessing has also been calculated and the result is 1 10¹⁸ and 3.10¹⁹ MeV, summed up to 10⁴ and 10⁶ years, respectively (assumed a cooling time of 40 years before storage). The capsule is assumed to have a cladding of titanium