1. Firefighting Status
Work on localisation and elimination of certain smouldering areas of the NSC shell by specialised personnel of the State Emergency Service with the involvement of specialised groups are underway, work on partial opening of structures, and holes are being cut for the final elimination of smouldering areas is in process.
Thermal imaging monitoring of the NSC structures is performed.
2. Technical Condition of the Object Shelter (OS) and New Safe Confinement (NSC-OS)
Due to damage to the external and internal shells (cladding) of the NSC Arch and Main Crane System equipment, the safety boundaries and operational conditions of the NSC-SO Complex have been violated.
According to the results of an emergency inspection of the NSC Arch’s enclosing and load-bearing structures, as well as the maintenance garage of the main crane system, the following damages has been detected.
1) Arch’s external cladding:
- through damages with an area of approximately 15 m2;
- defects in the cladding without continuous destruction up to 200 m2;
- damage to the internal cladding filler;
- there are destruction of bolted connections.
2) garage supporting structures:
- joints of the structures of the maintenance garage upper part are deformed.
3) According to the results of the preliminary assessment of the ignition consequences occurred on 18.02.2025, damage to the sealing membranes of the NSC enclosing perimeter in the southern, south-western and south-eastern zones was detected.
3. Radiation Status
- of the NSC-Object Shelter local site and ChNPP site
| Location of the monitoring station | EDR (μSv/h) | Ref. level (μSv/h) | Activity concentration of α-aerosols (Bq/m3) | Ref. level (Bq/m3) | Activity concentration of β-aerosols (Bq/m3) | Ref. level (Bq/m3) |
| NSC-OS site (north-west) | 3.66 | 40.0 | 0.001 | 0.1 | 1.000 | 10.0 |
| NSC-OS site (north-east) | 6.15 | 40.0 | 0.001 | 0.1 | 1.000 | 10.0 |
| NSC-OS site (south-west) | 9.47 | 40.0 | 0.001 | 0.1 | 1.000 | 10.0 |
| NSC-OS site (south-east) | 10.37 | 40.0 | 0.002 | 0.1 | 1.000 | 10.0 |
| ChNPP Administrative Building-1 | 0.26 | 7.5 | --- | --- | --- | --- |
| Outdoor Switchyard∙750 | 1.72 | 15.0 | --- | --- | --- | --- |
| Checkpoint-2 | 0.93 | 7.5 | --- | --- | --- | --- |
| ISF-2 | 0.17 | 2.0 | 0.01 | 0.2 | 1.000 | 10.0 |
No deterioration of the radiation situation at the NSC-OS site or at the ChNPP site as a whole has been recorded. No release of radioactive substances beyond the established limits has been detected.