The amendment to Decree No 358/2016 is prompted by the need to adapt current practice to the expected deployment of new nuclear sources. Proposed amendments: • Formally and materially, there is a distinction between the processes of 'repair' and 'maintenance', which, especially in the operation of selected equipment, has not always been sharply and clearly delineated in practice. • Implementation of the concept of ‘part of selected equipment’ introduced by the amendment to Act No 83/2025. • Addition of measures to prevent so-called counterfeit or fraudulent items. This is equipment for which compliance with technical requirements was not adequately assessed, inadequate tests were carried out with varying degrees of planning or intent, inadequate documents were produced, and this equipment was subsequently delivered and deployed in the operation of the nuclear installation as fully-fledged and fully legally compliant selected equipment. • Changes in conformity assessment procedures (e.g. the operator of the nuclear installation, and thus of selected equipment, is accepted as a conformity assessment body for its own needs. This concept was introduced by the aforementioned amendment to the Atomic Act and is further developed in the Decree). • Newly established framework requirements for persons carrying out conformity assessments. • Amendments to the annexes to the Decree, namely in specific areas of technical requirements, where individual requirements are clarified, as well…