THE ORDER OF THE FEDERAL SERVICE OF THE RUSSIAN FEDERATION ON ECOLOGICAL, TECHNOLOGICAL AND ATOMIC SUPERVISION

of April 5, 2018 No. 162

About approval of federal regulations and rules of use of atomic energy "The main requirements to prolongation of useful life of the block of nuclear power plant"

According to article 6 of the Federal Law of November 21, 1995 No. 170-FZ "About use of atomic energy" (The Russian Federation Code, 1995, No. 48, Art. 4552; 1997, No. 7, Art. 808; 2001, No. 29, Art. 2949; 2002, No. 1, Art. 2; No. 13, Art. 1180; 2003, No. 46, Art. 4436; 2004, No. 35, Art. 3607; 2006, No. 52, Art. 5498; 2007, No. 7, Art. 834; No. 49, Art. 6079; 2008, No. 29, Art. 3418; No. 30, Art. 3616; 2009, No. 1, Art. 17; No. 52, Art. 6450; 2011, No. 29, Art. 4281; No. 30, Art. 4590, Art. 4596; No. 45, Art. 6333; No. 48, Art. 6732; No. 49, Art. 7025; 2012, No. 26, Art. 3446; 2013, No. 27, Art. 3451; 2016, No. 14, Art. 1904; No. 15, Art. 2066; No. 27, the Art. 4289), subitem 5.2.2.1 of Item 5 of the Regulations on Federal Service for Environmental, Technological and Nuclear Supervision approved by the order of the Government of the Russian Federation of July 30, 2004 No. 401 (The Russian Federation Code, 2004, No. 32, Art. 3348; 2006, No. 5, Art. 544; No. 23, Art. 2527; No. 52, Art. 5587; 2008, No. 22, Art. 2581; No. 46, Art. 5337; 2009, No. 6, Art. 738; No. 33, Art. 4081; No. 49, Art. 5976; 2010, No. 9, Art. 960; No. 26, Art. 3350; No. 38, Art. 4835; 2011, No. 14, Art. 1935; No. 41, Art. 5750; No. 50, Art. 7385; 2012, No. 29, Art. 4123; No. 42, Art. 5726; 2013, No. 12, Art. 1343; No. 45, Art. 5822; 2014, No. 2, Art. 108; No. 35, Art. 4773; 2015, No. 2, Art. 491; No. 4, Art. 661; 2016, No. 28, Art. 4741, No. 48, Art. 6789; 2017, No. 12, Art. 1729; to No. 26, of the Art. 3847), I order:

Approve the enclosed federal regulations and rules of use of atomic energy "The main requirements to prolongation of useful life of the block of nuclear power plant" (NP-017-18).

Approved by the Order of the Federal Service of the Russian Federation on ecological, technological and atomic supervision of April 5, 2018 No. 162

Federal regulations and rules of use of atomic energy "The main requirements to prolongation of useful life of the block of nuclear power plant" (NP-017-18)

I. Appointment and scope

1. These federal regulations and rules of use of atomic energy "The main requirements to prolongation of useful life of the block of nuclear power plant" (are developed by NP-017-18) (further - the Main requirements) according to article 6 of the Federal Law of November 21, 1995 No. 170-FZ "About use of atomic energy", the Regulations on development and approval of federal regulations and rules of use of atomic energy approved by the order of the Government of the Russian Federation of December 1, 1997 No. 1511 (The Russian Federation Code, 1997, No. 49, Art. 5600; 2012, No. 51, Art. 7203), also establish requirements to prolongation of useful life of the block of nuclear power plant, including to comprehensive examination of the block of nuclear power plant by preparation for prolongation of term of its operation, criterion of possibility of operation of the block of nuclear power plant during additional term of operation, the requirement to prolongation of useful life of elements of nuclear power plant outside the appointed useful life of the block of nuclear power plant, the requirement to reasons for additional term of operation of the block of nuclear power plant, the requirement to preparation of the block of nuclear power plant to additional term of operation.

2. These Main requirements shall be fulfilled under the organization and work for preparation of the block of nuclear power plant for operation after the appointed or previous additional term of its operation. For blocks of nuclear power plants on which works (or part of works) on preparation of the block of nuclear power plant for its operation after the expiration of the appointed useful life are executed before commissioning of these Main requirements, procedure for reduction of nuclear power plants in compliance with the Main requirements, including terms and amount of necessary actions are determined in each case in the conditions of action of the license for operation of the block of nuclear power plant during additional term of operation.

3. The list of reducings is given in appendix No. 1, terms and determinations - in appendix No. 2 to these Main requirements.

II. Basic provisions

4. At least in 5 years prior to the termination of the appointed or additional term of operation (service) the operating organization shall carry out assessment of safety of the EXPERT block by results of which shall make the decision on possibility of continuation of its operation or on conclusion from operation. The specified decision shall be made with participation of developers of the RU and EXPERT projects.

5. The decision on possibility of continuation of operation of the EXPERT block after the termination of the appointed or additional term of its operation shall be accepted by the operating organization on basis:

results of estimates of residual resource of irreplaceable elements of the EXPERT block, and also building constructions, buildings, constructions and condition of their bases <1>;

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<1> The concepts "building constructions", "buildings", "constructions", "foundation of the building or construction", "mechanical safety" are applied in the values established by the Federal Law of December 30, 2009 No. 384-FZ "The technical regulation about safety of buildings and constructions" (The Russian Federation Code, 2010, No. 1, Art. 5; 2013, No. 27, Art. 3477).

results of estimates of safety of the EXPERT block, including periodic estimates of safety;

results of the executed comprehensive examination of the EXPERT block;

the characteristics of the platform of placement this about change the EXPERT (including data on seismicity change) for preceding period of operation;

analysis of operating experience;

EXPERT block compliance to requirements of the FNP and other regulatory legal acts operating at the time of assessment, regulating safety in case of operation of the EXPERT block;

possibilities of safety of the temporary storage of SNF which is formed during additional term of operation;

possibilities of safety in case of the address with the Russian joint stock companies which are formed during additional term of operation;

possibilities of safety of the EXPERT block in case of its conclusion from operation.

6. After decision making about possibility of continuation of operation of the EXPERT block the operating organization on the basis of results of comprehensive examination shall develop the program of preparation of the EXPERT block for prolongation of useful life providing:

carrying out the analysis of safety of the EXPERT block on compliance to requirements of FNP and other regulatory legal acts;

reasons for residual resource of building constructions, buildings, constructions, important for safety, and assessment of condition of their bases;

reasons for residual resource of elements of the EXPERT block during additional term of operation;

the action for replacement of the elements which developed the resource or residual resource of which cannot be determined;

actions for elimination (or compensations of negative impact on safety of the EXPERT block) the available discrepancies to requirements of FNP;

actions for upgrade of the EXPERT block for the purpose of safety of its operation;

actions for radiation inspection of rooms, equipment and pipelines;

the list of testing of systems and elements of the EXPERT block according to requirements of FNP;

development (updating) of the management program resource of building constructions, buildings, constructions, systems and elements of the EXPERT block during additional term of operation taking into account the planned actions for replacement and (or) upgrade of systems and elements of the EXPERT block;

development (updating) of actions for monitoring of condition of building constructions, buildings, constructions and their bases, and also systems and elements of the EXPERT block during additional term of operation;

development for the additional term of operation of the power unit of the separate standard program of operational nondestructive control of metal of the equipment, pipelines and other EXPERTS elements taking into account provisions FNP establishing requirements for control of the main metal, welded connections and the built-up surfaces in case of operation of the equipment, pipelines and other elements of the EXPERT block for the period of additional term of operation;

development (updating) of OOB of the EXPERT block (EXPERT block OUOB) proving safety of the EXPERT block for the entire period of additional term of operation;

adjustment of operational documentation.

7. If in analysis result of safety of the EXPERT block the operating organization reveals factors which interfere with its safe operation during additional term and which cannot be eliminated, then works on preparation of the EXPERT block for conclusion from operation shall be performed.

III. Comprehensive examination of the block of nuclear power plant

8. For the purpose of assessment of actual state of the EXPERT block, determination of residual resource of its elements, and also for development of the program of preparation of the EXPERT block for prolongation of useful life by the operating organization performing comprehensive examination of the EXPERT block shall be organized.

9. Works on comprehensive examination of the EXPERT block shall be performed according to the procedure and the terms established by the operating organization with participation of developers of the RU and EXPERT projects.

10. Before performing comprehensive examination of the EXPERT block the program of comprehensive examination of the EXPERT block in general, and also its systems and elements, building constructions, buildings, constructions and their bases shall be developed.

11. The program of comprehensive examination of the EXPERT block shall contain:

the list of to the be surveyed systems and elements, important for safety, building constructions, buildings, constructions and their bases;

stages of performing comprehensive examination;

methods and forms of performing comprehensive examination;

structure of preparatory work.

12. The program of comprehensive examination of the EXPERT block shall be approved by the operating organization and is approved with developers of the RU and EXPERT projects.

13. When performing comprehensive examination of the EXPERT block shall be determined:

technical condition of building constructions, buildings, constructions, systems and elements of the EXPERT block, important for safety;

the elements which developed the resource and subjects to replacement;

elements which value is not exhausted and whose exploitation can be continued for a certain period of time;

elements which value is not exhausted, but replacement of which will be required during the appointed or additional term of operation of the EXPERT block according to the schedule of replacement;

elements which residual resource is not determined and which will require determination of residual resource or replacement;

radiation situation in rooms of the EXPERT block, on its platform and in the sanitary protection zone;

the rooms, the equipment and pipelines which are subject to deactivation;

possibility of safety of storage of the SNF and Russian joint stock company which are formed in the period of additional (repeated additional) useful life;

possibility of safe handling of Russian joint stock company.

14. Results of comprehensive examination of the EXPERT block shall be given in the report containing approved by the operating organization:

the list of the inspected systems and elements, building constructions, buildings, constructions and their bases, and also summary of them;

the list of the systems and (or) elements of the EXPERT block which are subject to replacement;

the list of building constructions, buildings, constructions of systems and (or) elements of the EXPERT block for which additional measures for ensuring required technical condition and residual resource are necessary;

the list of systems and (or) elements of the EXPERT block which operation can be continued during additional term of operation;

structure of works, methods and amounts of comprehensive examination of the EXPERT block, including the organization of control of condition of elements of the EXPERT block, methods and amounts of control (control of the modes of operation and development of resource of elements, control of condition of metal, engineering certifications, checks, testing, approbations, checkings, calibrations);

results of the carried-out control;

estimates of categories of technical condition of building constructions, buildings, constructions and their bases;

acceptance criterions of decisions on replacement of element of the EXPERT block or about continuation of its operation;

general conclusions about the actual technical condition of the EXPERT block.

IV. Criteria of possibility of operation of the block of nuclear power plant during additional term of operation

15. Operation of the EXPERT block during additional or repeated additional term of operation can be continued if:

the EXPERT block conforms to requirements of the operating FNP or the necessary technical and (or) organizational measures directed to elimination or compensation of the discrepancies rendering or capable to exert negative impact on safety of operation of the EXPERT block are accepted;

are developed by the operating organization and management programs are carried out by resource of building constructions, buildings, constructions, systems and elements of the EXPERT block, important for safety;

the value of irreplaceable elements of the EXPERT block is not exhausted and is sufficient for additional or repeated additional term of operation;

in management programs the resource of building constructions, buildings, constructions, systems and elements of the EXPERT block, important for safety, provides technical means and methods of carrying out monitoring of their residual resource;

the separate standard program of operational nondestructive control of metal of the equipment, pipelines and other EXPERTS elements during additional term of operation of the power unit is developed;

technical condition of the EXPERT block during additional term of operation corresponds to the RU and EXPERT projects;

the radiation situation in rooms of the EXPERT block, on its platform and in the sanitary protection zone conforms to normative requirements;

the possibility of temporary safe storage of SNF and safety in case of the address with the Russian joint stock companies which are formed during additional term of operation are provided;

it is developed EXPERT block OOB (EXPERT block OUOB) for additional term of operation (is staticized).

16. In case of reasons for possibility of prolongation (repeated prolongation) of useful life of the EXPERT block and in case of reasons for residual resource of the EXPERTS elements shall be considered:

mechanisms of degradation of metal of irreplaceable systems and elements, concrete and fittings of building constructions, buildings, constructions, including the degradation mechanisms which are not considered in the RU and EXPERT projects;

degradation of insulating and protective characteristics of irreplaceable cables, electrotechnical equipment, stationary installations of the equipment of instrumentation and automated control systems, systems of radiation control;

degradation of metal of anticorrosive naplavka of cases of reactors, equipment and pipelines;

reduction of thickness of walls important for safety of the equipment and pipelines due to corrosion and erosion.

17. Results of reasons for residual resource of the EXPERTS elements taking into account 16 presents of the Main requirements of mechanisms of degradation of materials listed in Item shall be given in EXPERT block OOB (EXPERT block OUOB).

18. In case of prolongation of useful life of the EXPERT block by results of comprehensive examination of the EXPERT block the list of building constructions, buildings, constructions, systems and elements of the EXPERT block, important for safety, for the organization of additional control of technical condition and condition of constructional materials with indication of control zones shall be determined and reasonable. During repeated additional term of operation of the EXPERT block the specified list shall be staticized proceeding from the actual state of elements established as a result of comprehensive examination of the EXPERT block.

19. The amount and frequency of inspections and monitoring of technical condition of building constructions, buildings, constructions and their bases, and also nondestructive control of condition of metal of systems and elements of the EXPERT block, important for safety, shall be established proceeding from their actual state and residual resource. Amounts and frequency of control shall be proved.

20. For the EXPERTS elements carried to classes of safety 1 and 2 according to federal regulations and rules of use of atomic energy "General provisions of safety of nuclear power plants" NP-001-15 (further - NP-001-15) approved by the order of Federal Service for Environmental, Technological and Nuclear Supervision of December 17, 2015 No. 522 (registration No. 40939, the official Internet portal of legal information www.pravo.gov.ru is registered by the Ministry of Justice of the Russian Federation on February 2, 2016. 2016, No. 0001201602050003), frequency of inspection and monitoring of technical condition of building constructions, buildings, constructions and their bases, and also nondestructive control of condition of metal of systems and elements of the EXPERT block shall be established proceeding from their actual state and be carried out at least once in four years.

V. Requirements to prolongation of useful life of elements of the block of nuclear power plant, important for safety

21. Determination of residual resource of elements of the EXPERT block, important for safety, shall be carried out taking into account the actual service conditions of the EXPERT block and the actual technical condition of elements of the EXPERT block for date of inspection.

22. The residual resource of the elements of the EXPERT block carried to safety classes 1, 2 and 3 according to NP-001-15, shall prove to be true on basis:

national standards and sets of rules, obligatory to application, for the purpose of observance of requirements of the Federal Law of December 30, 2009 No. 384-FZ "The technical regulation about safety of buildings and constructions";

FNP establishing requirements to reasons for durability and management of service life and the EXPERTS pipelines;

national standards, obligatory to application, for the purpose of observance of requirements of FNP establishing requirements to reasons for durability and service life and the EXPERTS pipelines;

the standards used in management programs by resource of systems and elements of the EXPERT block (in the presence of reasons for possibility of their application during additional term of operation of the EXPERT block).

23. For cases of VVER reactors duration of additional term of operation shall be confirmed with reasons for the fact that by the end additional (repeated additional) useful life of value of viscosity of destruction of the main metal and metal of the welded seams located in radiation zone will allow to sustain without destruction all operational and emergency loadings caused by hit of cold water in the reactor case, and also loading when hydrotesting. Confirmation of the minimum values of viscosity of destruction of the main metal and metal of welded seams shall be based on the data obtained on samples witnesses or templeta.

24. In case of impossibility to provide resistance to brittle destruction of the case of the VVER reactor for the entire period additional (repeated additional) useful life owing to radiation and thermal embrittlement the operating organization shall organize recovery of values of mechanical properties of the main metal and metal of welded seams of cases of reactors or to limit the period additional (repeated additional) useful life to time during which resistance to brittle destruction of the case of the reactor will be provided.

25. Efficiency of actions for recovery of values of mechanical properties of the main metal and metal of welded seams of the case of the VVER reactor shall be proved before decision making about prolongation of useful life of the EXPERT block.

26. In case of reasons for resistance of the case of the VVER reactor brittle destruction needs to consider:

radiation and thermal embrittlement of the main metal and metal of welded seams for the entire period of operation, including in the period of additional (repeated additional) useful life;

influence of upgrades of system of emergency chilling of active zone of the reactor on the allowed value of critical temperature of fragility of the main metal and metal of welded seams;

results of control of samples witnesses or templet of the main metal and metal of welded seams;

results of control of metal of the case of the reactor when performing comprehensive examination;

undergrowth of the found defects in the period of additional (repeated additional) useful life;

corrosion damages of metal of cases of the reactor (for the surfaces which are not protected by anticorrosive building up).

27. Duration additional (repeated additional) useful life of metalwork of reactors of the RBMK and EGP-6 types shall be proved by results of the carried-out works, confirmatory that by the end of additional period (repeated additional) useful life in case of the most adverse combination of operational and seismic loadings resistance of metalwork to destruction will be proved.

28. In case of reasons for resistance to destruction of metalwork of the reactor of the RBMK and EGP-6 types it is necessary to consider:

results of control of the available samples of the main metal and metal of welded seams of metalwork, and also samples of metal which are cut out directly from metalwork of the EXPERT this block or its analog;

results of control of metal of metalwork when performing comprehensive examination;

undergrowth of the found defects in the period of additional (repeated additional) useful life;

radiation and thermal embrittlement of the main metal and metal of welded seams of metalwork for the entire period of operation, including in the period of additional (repeated additional) useful life;

corrosion thinnings of walls of metalwork for the entire period of operation, including in the period of additional (repeated additional) useful life.

29. Duration of additional term of operation of graphite laying of reactors of the RBMK and EGP-6 types shall be confirmed with reasons for the fact that by the end of additional period (repeated additional) useful life in case of the most adverse combination of operational and seismic loadings physicomechanical characteristics of graphite will be sufficient for preserving the bearing capability of graphite columns, and curvatures of graphite columns will not lead to violations of functioning of working bodies of management system and protection of the reactor and to emergence of inadmissible loads of elements of active zone of the reactor or metal construction of the reactor.

30. When carrying out repair work on recovery of geometrical characteristics of graphite columns it shall be proved that reduction of mass of graphite in active zone of the reactor will not lead to inadmissible change of neutron physical characteristics of active zone of the reactor.

31. In case of reasons for durability and operability of graphite laying of reactors of the RBMK and EGP-6 types it is necessary to consider:

results of periodic researches of the actual physicomechanical characteristics of the cores which are cut out from graphite laying of the EXPERT block or its analogs;

results of periodic intra reactor control of technological channels, channels of SUSA and graphite laying;

results of the performed rescue and recovery operations on graphite laying;

results of projections of physicomechanical characteristics of graphite and forming of graphite columns.

Frequency of researches of the actual physicomechanical characteristics of graphite and measurements of graphite columns shall be proved in the RU project and is given in EXPERT block OOB (EXPERT block OUOB).

32. For BN reactors control of condition of the main metal and welded connections of the case of the reactor and safety case in places, available to control, shall be executed. Places and amounts of control shall be proved. Results of control of the case of the reactor and safety case shall be considered in case of reasons for the period of additional term of operation.

33. Duration additional (repeated additional) useful life of systems, important for safety, and elements of BN reactors shall be confirmed with reasons for the fact that by the end of additional period (repeated additional) useful life in case of the most adverse combination of operational and seismic loadings durability and long durability of these systems and elements will be provided taking into account:

degradations of properties of metal of the reactor and intra reactor designs in case of complex impact of neutron radiation, high temperatures and processes of creep;

exhaustion of deformation capability of metal of the reactor and intra reactor designs;

reasonable forecast values of characteristics of long durability and long plasticity of metal of the equipment and RU pipelines.

34. The period additional (repeated additional) useful life of building constructions, buildings and constructions of the EXPERT block, and also their bases shall be confirmed taking into account the most adverse combination of all types of the loadings corresponding to functional purpose and the constructive solution of buildings or constructions for which their mechanical safety shall be ensured taking into account:

actual values of the geometrical sizes of designs and their sections, deposit, lists;

actual state of system of preliminary tension of design (in the presence);

availability of cracks, chips and local destructions;

locations, nature of cracks and width of their disclosure by results of monitoring;

conditions of protective coatings;

deflections and deformations of designs and their bases;

signs of violation of coupling of armature with concrete;

armature gap availability;

conditions of anchoring of longitudinal and cross armature;

extents of corrosion of concrete and armature.

35. The period additional (repeated additional) useful life of elements of the EXPERT block shall not exceed the residual resource of these elements determined according to requirements of Item of 22 presents of the Main requirements.

36. Reasons for duration additional (repeated additional) useful life of the EXPERT block shall be based on:

confirmation of conformity of the EXPERT block to requirements of FNP and (or) sufficiency of the taken technical and organizational measures directed to elimination or compensation of the discrepancies rendering or capable to exert negative impact on safety of operation of the EXPERT block;

estimates of technical condition for additional term of operation of the bearing structures of buildings, constructions in which systems, important for safety, and elements of the EXPERT block, and also estimates of technical condition of foundations of these buildings and constructions are located;

values of residual resource of irreplaceable elements of the block;

sizes of residual resource of the important for safety replaced EXPERT block elements which resource was not established in case of comprehensive examination;

observance of the operational limits and conditions of safe operation proved in the RU and EXPERT projects taking into account the executed upgrade and (or) replacement of systems and elements;

confirmation of possibility of safe storage of the SNF and Russian joint stock company which are formed during additional term of operation.

VI. Requirements to preparation of the block of nuclear power plant to operation in the period of additional (repeated additional) useful life

37. By preparation of the EXPERT block for operation in the period of additional (repeated additional) useful life the operating organization shall:

in full to realize the actions provided by the program of preparation of the EXPERT block for operation during additional term, specified in Item of 6 presents of the Main requirements;

make necessary changes to operational documentation and the management program resource of systems and elements of the EXPERT block taking into account the executed upgrade or replacement of part of systems and elements;

carry out additional training of personnel of the EXPERT block for working off of practical skills of operation of the block in the period of additional (repeated additional) useful life.

38. Replacement or upgrade of systems and elements of the EXPERT block shall be carried out according to project and (or) design documentation.

39. The operating organization shall execute reasons for safety of the EXPERT block according to FNP taking into account the made upgrade or replacement of part of systems and elements.

40. Before operation of the EXPERT block during additional term the operating organization shall carry out necessary commissioning and testing for confirmation of functioning of the replaced and modernized systems and elements of the EXPERT block according to project criteria and characteristics.

41. Performance of works on preparation of the EXPERT block for prolongation of useful life shall not lead to damage or loss of operability of systems and elements of the EXPERT block, to reduction of their resource or decrease in level of safety of operation of the EXPERT block.

42. The operating organization on the basis of corresponding changes in the RU projects and the EXPERT block shall execute adjustments of the operating production schedules of safe operation of the EXPERT block, managements (instructions) for operation of systems (elements), instructions and managements determining actions of workers (personnel) in case of project and beyond design basis accidents and also to make corresponding changes to passports of systems and elements.

43. After completion of works on preparation of the EXPERT block for operation during additional term of operation the operating organization shall prepare and approve the act of readiness of the EXPERT block for prolongation of useful life.

Appendix №1

to the federal regulations and rules of use of atomic energy "The main requirements to prolongation of useful life of the block of nuclear power plant" approved by the Order of the Russian Federation of Federal Service for Environmental, Technological and Nuclear Supervision of April 5, 2018 No. 162

List of reducings

The EXPERT - nuclear power plant

BN - the reactor on bystry neutrons with the sodium heat carrier

VVER - the water-to-water power reactor

Instrumentation and automated control systems - instrumentations and automatic equipment

OOB - the report on reasons for safety

OUOB - the report on profound assessment of safety

SNF - spent nuclear fuel

Russian joint stock company - radioactive waste

RBMK - the reactor of big capacity channel

RU - reactor installation

SUSA - management system and protection of the reactor

FNP - federal regulations and rules of use of atomic energy

EGP-6 - the power heterogeneous loopback reactor with 6 loops of circulation of the heat carrier

Appendix № 2

to the federal regulations and rules of use of atomic energy "The main requirements to prolongation of useful life of the block of nuclear power plant" approved by the order of the Federal Service of the Russian Federation on ecological, technological and atomic supervision of April 5, 2018 No. 162

Terms and determinations

In these Main requirements the following terms and determinations are used.

1. Additional term of operation of the EXPERT block - the calendar duration of operation of the EXPERT block over the appointed useful life.

2. Protective characteristics - the parameters characterizing capability of cables, the electrotechnical equipment and devices to resist to mechanical, thermal and (or) radiative effects without loss of functional qualities.

3. The appointed useful life (services) of the EXPERT block - the calendar time of service of the EXPERT block established and proved in the EXPERTS and RU projects (including the periods of maintenance and repair).

4. Residual resource of element of the EXPERT block - difference between the established and developed EXPERT block element resource.

5. Repeated additional term of operation of the EXPERT block - the calendar duration of operation of the EXPERT block over terms of the previous prolongation of operation.

6. The management program resource of elements of the EXPERT block - the provided FNP and documents, obligatory for application, on standardization in the field of use of atomic energy set of documents on management of resource of elements of the EXPERT block.

7. Prolongation of useful life of the EXPERT block - implementation of complex of actions for preparation of the EXPERT block for operation during additional or repeated additional term of operation.

8. The EXPERT block element resource - total operating time of element of the EXPERT block from the beginning of operation before timepoint in case of which there will come irreversible violation of the conditions of durability or working capacity established by regulating documents.

9. Technical condition of the EXPERT block - set of the properties of element of the EXPERT block or EXPERT block in general characterizing its capability or its absence to perform the functions according to the EXPERTS and RU projects.

 

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