Reconstruction of the existing transport and process equipment of the “wet” type interim storage facility for spent fuel (ISF-1) is envisaged by “The Concept Design on ISF-1 Decommissioning. Stage 1 - Reconstruction of Transport and Process Equipments with the Objective of SFA Discharge”.

The Storage Facility is designed for acceptance and interim storage of spent fuel assemblies (SFA) coming from reactor compartments of Power Units after preliminary safe enclosure. At the present time more than 21 thousand fuel assemblies are stored in five compartments of the ISF-1 cooling pool that was commissioned in 1986.

The design of the existing Storage Facility does not envisage a procedure for reloading of spent fuel from ISF-1.

The reconstruction objective is to ensure safe performance of transport and process operations on SFA reloading from ISF-1, their loading into a transport container and transportation to ISF-2.

Basic information: Interim Spent Nuclear Fuel Dry Storage Facility (ISF-2)

The activities are financed at the expense of funds of the State Budget of Ukraine. The General Designer is PJSC “Kyiv Research and Design Institute “EnergoProekt” (Ukraine).

Performance of activities:

Commissioning Stage 1: Creation of System for SNF reloading from ISF-1, has been fully implemented. The General Contractor is SE ChCD JSC “YuTEM”.

Commissioning Stage 2: Creation of System for additional monitoring of water level in spent fuel pool compartments, canyon and transfer basket storage compartments; Reconstruction of video control system for transportation and process operations with SNF. The Stage has been fully implemented. The General Contractor is “UkrTransBud” Company.

The Project was completed in December 2012.

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Within the NSC Project at the construction site the following works are being performed:
- Assembling of basic structures of the arch
- Assembling of hanger supports of crane beams
- Assembling of a container of jacking system
- Assembling of binding rafters of inner lining
- Assembling of Floline 70 steel flooring packs and omega profile
- Profiling of Kalzip panels
- Preparatory works for engineering building were performed

Assembly of the Arch metal structures (for 2nd lifting)
According to the design - 4,097 tons
1123,71 tons (27,4%) performed

Installation of the Arch roof’s outer cladding:
According to the design, surface area of outer cladding (Stage 1С) - 7,853.9 m²;
Surface area of cladding sections 2, 5 (Stage 2) - 6,098.3 m²;
Surface area of roof cladding before 2nd lifting - 13,952.2 м².
Overall progress in the Arch outer cladding installation before 2nd lifting – 40,4%

In 2009, the project implementation for modernisation of Long-Length Waste Cutting Facility at Chornobyl NPP, the Republic of Ukraine, started. The work is funded by the European Community Commission managing technical aid programmes in the area of nuclear safety (the European Commission) within the framework of TACIS programme.

A significant amount of the equipment and special items has been accumulated at Chornobyl NPP, they were used in the reactor core in the course of power generating units operation. Currently, these special items and equipment are stored in the fuel storage pools, technological shafts and reactors of Chornobyl NPP Units 1, 2 and 3. Estimated volume of their processing makes about 2,000 m³.

Besides, in the fuel storage pools of Spent Nuclear Fuel Storage Facility No.1 there are 18,000 stainless steel leak-tight bottles of more than 10 m long. Currently, there are spent fuel assemblies inside these leak-tight bottles but subsequently they will be emptied as the spent fuel assemblies will be moved to Interim Spent Fuel Dry Storage Facility.

Basic information: Interim Spent Nuclear Fuel Dry Storage Facility (ISF-2)

Almost all special items are from 6 to 22 meters long. That’s why specially designed equipment and processes are required for their conditioning.

In addition, special items have various level of activity lengthwise depending on their position relative to the centre of reactor core. It demands a case-by-case approach to determination of radiation and selection of methods for preliminary processing of special items.

For size-reduction of special items, for collection and removal of radioactive waste arising at the Chornobyl NPP Units 1, 2 and 3, long-length waste cutting facilities were designed and commissioned. They include the areas for cutting the long-length items and for container loading.

The existing long-length waste cutting facilities neither meet the contemporary safety requirements nor ensure completion of all the tasks related to removal of special items from Units 1, 2 and 3. Upgrading the long-length waste cutting facilities is intended for resolving these tasks.

Implementation of project for modernisation of Long-Length Waste Cutting Facility at Chornobyl NPP will enable to create conditions for the following:
1. Safe management of special items and radioactive waste arising during:
    • size-reduction of special items;
    • graphite retrieval from reactor channels;
    • pre-sorting of the size-reduced special items into waste categories;
    • conditioning of the arising radwaste.
2. Prevention of the radioactive substance spread into the facility premises and environment in quantities above the established limits.
3. Reduction of radiation impact on personnel.
4. Safe removal of a large number of special items (including their high-level pieces) from ChNPP Units.

Select the another date

Within the NSC Project at the construction site the following works are being performed:
- Assembling of basic structures of the arch
- Assembling of hanger supports of crane beams
- Assembling of upper platforms of hoisting towers
- Assembling of a container of jacking system
- Assembling of binding rafters of the cladding
- Assembling of binding rafters of inner lining
- Works on assembling of Floline 70 steel flooring packs were performed
- Profiling of Kalzip panels
- Preparatory works for engineering building were performed

Assembly of the Arch metal structures (for 2nd lifting)
According to the design - 4,097 tons
831,32 tons (20,3%) performed

Installation of the Arch roof’s outer cladding:
According to the design, surface area of outer cladding (Stage 1С) - 7,853.9 m²;
Surface area of cladding sections 2, 5 (Stage 2) - 6,098.3 m²;
Surface area of roof cladding before 2nd lifting - 13,952.2 м².
Overall progress in the Arch outer cladding installation before 2nd lifting – 37,1%