The method of desiccation of casks for spent nuclear fuel, especially advantageously leaking spent nuclear fuel, and/or radioactive waste, consists of steps of filling the cask with spent nuclear fuel or radioactive waste containing water, especially of filling the cask with spent nuclear fuel or radioactive waste under water, of dewatering the cask interior, especially by pumping water out, and of vacuum-desiccating the cask interior. During vacuum desiccation of the cask, the vacuum desiccation process is interrupted several times, and during the period of each interruption pressure increase in the cask caused by water evaporation is measured over a predetermined time interval to establish the achieved degree of dryness in the cask. When reaching pressure increase in the cask corresponding to at most 10 hPa per 15 minutes, at least one hollow body containing a desiccant in the form of pills is put in the cask interior. Cask (1) for spent nuclear fuel or radioactive waste is provided with body (1a) with an inner room to be filled with spent nuclear fuel or radioactive waste, especially under water, and, further, with primary lid (3) designed to close the inner room of the body of cask (1), which inner room is provided under this primary lid (3), where primary lid (3) is provided with at least one closable bushing (4) for dewatering and desiccation of the inner room of the cask after filling and every closable bushing (4) is fitted with cap (5) to close it. At least one hollow body (6) containing a desiccant is arranged under at least one bushing (4) in the inner room of body (1a) of cask (1).
- 출원번호 : 24188877.5
- 출원인 : Skoda JS a.s.
- 특허번호 :
- IPC : B01D-053/26(2006.01);G21F-005/008(2006.01);G21F-005/06(2006.01);G21F-005/12(2006.01);