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RESOLUTION OF THE MINISTRY OF EMERGENCY SITUATIONS OF THE REPUBLIC OF BELARUS

of April 7, 2021 No. 19

About approval of regulations and rules on ensuring nuclear and radiation safety

Based on item 4 of article 21 of the Law of the Republic of Belarus of June 18, 2019 No. 198-Z "About radiation safety", the paragraph of the fourth of part three of article 6 of the Law of the Republic of Belarus of July 30, 2008 No. 426-Z "About use of atomic energy", subitem 7.4 of Item 7 of the Regulations on the Ministry of Emergency Situations of the Republic of Belarus approved by the Presidential decree of the Republic of Belarus of December 29, 2006 No. 756, the Ministry of Emergency Situations of the Republic of Belarus DECIDES:

1. Approve regulations and rules on ensuring nuclear and radiation safety "The main requirements to reasons for durability and thermomechanical behavior of the heat-generating assemblies and the fuel elements in active zone of water-to-water power reactors" (are attached).

2. This resolution becomes effective after its official publication.

Minister

V. I. Sinyavsky

It is approved

Committee for State Security of the Republic of Belarus

 

Ministry of Architecture of the Republic of Belarus

 

Ministry of Internal Affairs of the Republic of Belarus

 

Ministry of Health of the Republic of Belarus

 

Ministry of Natural Resources and Environmental Protection of the Republic of Belarus

 

 

Approved by the Resolution of the Ministry of Emergency Situations of the Republic of Belarus of April 7, 2021 No. 19

Regulations and rules on ensuring nuclear and radiation safety "The main requirements to reasons for durability and thermomechanical behavior of the heat-generating assemblies and the fuel elements in active zone of water-to-water power reactors"

Chapter 1. General provisions

1. Regulations and rules on ensuring nuclear and radiation safety "The main requirements to reasons for durability and thermomechanical behavior of the heat-generating assemblies and the fuel elements in active zone of water-to-water power reactors" (further - Rules) establish technical requirements to reasons for durability and operability of the heat-generating assemblies (further - TVS) and the fuel elements (further - TVEL) the designed, constructed and operating nuclear power plants with water-to-water power reactors (further - VVER) in the modes of normal operation, violation of normal operation and project accident and extend to reasons for durability and operability of TVS and fuel elements.

2. Requirements of these rules do not extend to reasons for durability of springs of TVS, and also the washers located in fuel elements of springs and fixing which destruction cannot lead to exit of radioactive materials from fuel elements, and also in the following cases:

in the presence in the heat carrier of the first contour of reactor installation of foreign objects;

in case of violations of regulations of maintaining the water and chemical mode of the heat carrier of the first contour of reactor installation;

in case of reactivity accidents, accidents with loss of the heat carrier and other accidents with violations of the heat sink from fuel elements, and also in case of accidents with fall of TVS in case of transport and technology transactions.

3. For the purposes of these rules terms and their determinations in the values established by the Law of the Republic of Belarus of June 18, 2019 No. 198-Z "About radiation safety" and the Law of the Republic of Belarus of July 30, 2008 No. 426-Z "About use of atomic energy" and also the following terms and their determinations are used:

accident with loss of the heat carrier - sharp deterioration in refrigerating conditions of fuel elements owing to razuplotneniye of contour of circulation of the heat carrier of the first contour of the reactor;

local loss of stability - local vypuchivaniye of the TVS separate elements under the influence of the squeezing and (or) tangent tension;

the materials research organization - the organization rendering services to the operating organization for development and reasons for possibility of use of materials of elements of active zones of reactors;

violation of normal operation (further - NNE) - violation in work of reactor installation in case of which there was variation from the set operational limits and conditions which is requiring emergency stop of the reactor and did not turn into accident;

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