HOT TESTS AT CHORNOBYL NPP ISF-2 — PLACING FIRST CANISTER FOR STORAGE

03.12.2020
Hot tests of the process systems of the dry spent nuclear fuel storage facility ISF-2, which involves reprocessing of spent fuel assemblies (SFAs) and their preparation for permanent storage, are under way at the Chernobyl NPP.
So far, 186 SFAs have been delivered with the participation of Company specialists. Of these 93 have been divided into fuel bundles which have been placed into fuel tubes which have been loaded into a first double-wall canister which has been sealed and then placed into a concrete module for an extended period.
The remaining 93 SFAs are to be loaded into a second double-wall canister under a similar procedure.
For the near future it is planned to perform works to prepare and seal the second canister including:
•    welding the internal and external covers and performing proper leakage checks;
•    gas and vacuum dewatering of the fuel under the implemented advanced technology;
•    filling the canister space with an inert gas, helium.
Successful hot tests will further enable relocation for storage of over 21,000 SFAs, which will be accumulated during operation of the Chornobyl NPP over the next 100 years.
From 2014 through 2020, the Company has performed a full range of construction, installation, and startup and adjustment works.