Order No 575 / 2025 Coll.
Decree amending Decree No. 162 / 2017 Coll., on Safety Assessment Requirements under the Nuclear Act
Valid
Order
Effective from 01.01.2026
Text versions:
01.01.2026
22.12.2025
575
DECLARATION
of 15 December 2025
amending Decree No. 162 / 2017 Coll., on Safety Assessment Requirements under the Atomic Act
According to Section 236 of Act No. 263 / 2016 Coll., the Atomic Act, as amended by Act No. 83 / 2025 Coll., provides for the implementation of Section 48 (6):
Decree No. 162 / 2017 Coll., on Safety Assessment Requirements under the Atomic Act, is amended as follows:
1. In Article 2, at the end of point (f), the word "a 'is replaced by a comma.
2. In Article 2 (g), the words "more than 1% of the initial quantity 'are deleted, the words" nuclear' are replaced by the words "nuclear ', the words" activity greater than 2,0E + 15 Bq' are inserted after the word "equipment 'and the dot is replaced by a comma at the end.
3. in Article 2, the following point (h) is added:
"(h) a large leak of 137Cs from a nuclear installation with an activity greater than 2,0E + 15 Bq. ';
4. In Article 5 (2) (c), the words "surface-operating internal and external 'are deleted and the words" caused by the properties of the territory to be located' are added at the end of the text.
5. in Article 6 (1) (f):
"(f) established:
1. acceptance criteria for not achieving nuclear fuel damage or for not reaching the category of radioactive substance leakage analysed in the probabilistic level 2 safety assessment; and
2. minimum criteria for the success of corrective actions to prevent damage to nuclear fuel or to prevent the leakage of radioactive substances of each leakage category, on the basis of the acceptance criteria referred to in point 1; ';
6. In Article 6 (1) (g), the words "potential radiological incidents' are replaced by the words" potential damage to nuclear fuel or to potential leakage of radioactive substances of the category analysed 'and the words "and minimum criteria for the success of corrective actions' are inserted after the word" acceptability '.
7. in Article 6 (1) (i), the words "revealed and deleted" are replaced by the words "solved" and the words "in such a way that functional dependencies between systems, structures or components are taken into account" are added at the end of the text.
8. in Article 6 (1) (k), the words "any installation used" shall be replaced by the words "any system, structure or component used."
9. in Article 6 (1) (n), the words "analysed categories" shall be inserted after the words "k."
10. in Article 6 (2) (a), the words "and dependencies resulting from their location" shall be deleted;
11. in Article 6 (2) (b), the word "mutual" shall be replaced by "all physical"; the words "the facts affecting nuclear safety" shall be replaced by "the location of the systems" and the words "which may result from the failure of the nuclear installation," shall be replaced by "the construction or component."
12. in § 7 (c) of the introductory part of the provision, the words "leakage and great" shall be inserted after the words "early."
13. in Article 10 (5) (b), the words "minor deviations of the characteristics of a nuclear installation from their normal values laid down by legislation which are capable of causing a significant reduction in the level of nuclear safety of a nuclear installation" are replaced by the words "edge effect."
14. in Paragraph 10 (5) (d), the words "percentage of factors" shall be replaced by the words "facts," the words "fixed with significant uncertainty," shall be replaced by the words "that the overall low level of risk is not dependent," and the words "the overall low level of risk posed by nuclear installations" shall be replaced by the words "contributors with significant uncertainty."
15. in Article 17 (f) (1), the words "promoting a likely safety assessment" shall be inserted at the beginning, the words "compliance with the results of a likely safety assessment to be determined" shall be deleted and the words "this system" shall be deleted.
16. in Article 18 (a) (1), the word "risks" is replaced by "threats."
17. in Article 18 (b) (1), the words "technical safety, radiation monitoring, radiation emergency management" and the words "technical safety" shall be replaced by "security."
18. in Paragraph 18 (e):
"(e) in the area covered by the procedures and regulations, procedures and internal rules for the operation and decommissioning of nuclear installations in respect of:
1. their compliance with the current state of the nuclear installation and its operation or decommissioning;
2. their complexity, verification, approval,
3. the introduction of a change management system for their adaptation;
4. the rates of compliance; and
5. the compliance of the accident management system with the results of the likely safety assessment and its suitability for preventing or mitigating serious damage to the active zone. ';
19. in Article 21 (3) (b), the words "a description of the way in which the criteria referred to in Article 13 (6) and (7) are met" shall be replaced by the words "a list of safety requirements."
20. in Article 21 (3) (c) and (d):
"(c) the outcome of the assessment of the individual safety requirements, indicating:
1. the criteria used for assessing compliance with the safety requirements and methodologies referred to in Article 3 (1);
2. a description of the evaluation procedure and how the criteria set out in paragraphs 6 and 7 of Section 13 are met;
3. the deviations from compliance with the criterion set out in Sections 13 (6) and (7); and
4. recommendations for corrective action to address the deviation from the safety requirement;
(d) in the case of records of actual state evaluation of systems, structures and components,
1. a list of systems, structures and components for which it is not possible to verify the actual state by technical methods;
2. a description of the indirect methods for assessing the state of the systems, structures and components referred to in point 1; and
3. evaluation of the impossibility of examining the actual situation by technical methods in terms of severity for nuclear safety, radiation protection, technical safety, monitoring of the radiation situation and management of the radiation emergency. ';
21. in Article 21 (3), point (e) is deleted;
22. in Article 21 (4) (a), the words "and the lift from the safety requirements for the field of evaluation, including a reference to the detailed information contained in the record of the evaluation carried out in accordance with paragraph 3," shall be added at the end of the text.
23. in Paragraph 21 (4) (b), the words "the list of safety requirements" shall be replaced by the words "the summary of the results of the evaluation referred to in paragraph 3."
24. in Article 21 (4) (c):
"(c) a summary of the derogations from safety requirements and their relevance, including a proposal for solutions to the derogations, ';
25. in Article 21 (4) (d) of the introductory part of the provision, the word "further" shall be replaced by the words "if, in the course of the evaluation and the implementation of the evaluation records referred to in paragraph 3 (d), it is referred to."
26. in Article 21 (4) (d) (1), the words "list of systems" are replaced by the words "summary information on systems," the words "structures and components" are replaced by the words "structures or components" and the words "not" are replaced by the words "not."
27. in Article 21 (4) (d) (2), the words "description of indirect methods" shall be replaced by the words "information on the applied indirect method," the words "status of systems" shall be replaced by the words "and its results" and the words "structures and components referred to in point 1 and" shall be deleted. "
28. in Article 21 (4) (d) (3), the word 'seriousness' shall be inserted after the word 'assessment', the words' seriousness for nuclear safety, radiation protection, technical safety, monitoring of the radiation situation 'shall be deleted and the words' management of a radiological emergency 'shall be deleted;
29. in Article 21 (4) (d), the following point 4 is added:
'4. a reference to the detailed information contained in the record of the evaluation carried out pursuant to paragraph 3 (d) a '.
30. in Paragraph 21 (4), the following point (e) is added:
"(e) the conclusion from the assessment for an area allowing an assessment of the level of nuclear safety achieved, radiation protection achieved, technical safety, monitoring of the radiation situation and management of the radiological emergency achieved during the evaluation period.";
31. in Paragraph 23 (1) of the Introductory Part of the provision, the words "amendments affecting nuclear safety, technical safety and security of nuclear equipment or others" shall be inserted after the words "implementation."
32. In Article 23 (2) of the Introductory Part of the provision, the words "amendments affecting nuclear safety, technical safety and security of nuclear equipment or others' shall be inserted after the words" implementation '.
33. In Section 23 (3) of the introductory part of the provision, the words "first physical start-up 'are replaced by the words" putting into service'.
34. in Article 23 (3) (a), the words "and ageing" shall be inserted after the words "ageing."
35. in Article 23 (3) (c), the words "and ageing" shall be added at the end of the text.
36. In Article 25, the following paragraph 5 is added:
"(5) The documentation of the special safety assessment referred to in Article 24 (2) shall be submitted to the Authority within 30 days of the completion of the investigation and the evaluation of the safety aspects of the operational event which led to the suspicion of a reduction in the level of nuclear safety, radiation protection, technical safety, monitoring of the radiation situation, management of a radiological emergency or security. ';
Efficacy
This Decree shall take effect on 1 January 2026.
President:
v. Ing. Merxbauer, Ph.D., v. r.
Director of the Management and Technical Support Section
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Regulation Information
| Citation | Decree No. 575 / 2025 Coll., amending Decree No. 162 / 2017 Coll., on Safety Assessment Requirements under the Atomic Law |
|---|---|
| Regulation Type | Order |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 22.12.2025 |
|---|---|
| Effective from | 01.01.2026 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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