Lifetime Extension

In line with the Energy Strategy of Ukraine, the State Enterprise “National Nuclear Energy Generating Company Energoatom” made the decision on preparation of Khmelnitsky 1 for lifetime extension.
This decision is based on the fundamental principle of giving the highest priority to ensuring safe long term operation of Khmelnitsky-1.

The lifetime extension strategy chosen by Energoatom involves the Khmelnitsky-1 shutdown in 2018 for a long outage, implementation of the required scope of LTO activities to ensure its safe and reliable operation, and then the restart of operation.

So, in accordance with the chosen strategy, at the end of 2018 Khmelnitsky-1 was shutdown for outage.

Brief General Plan for Khmelnitsky 1 Lifetime Extension Activities

The main goal of life extension activities is to implement organizational and technical measures to prepare Khmelnitsky-1 for long term operation (LTO), which will ensure its safe and reliable operation at the level established by existing standards and regulations on nuclear and radiation safety.
To achieve the set goal, the following objectives are being implemented during the preparation of Khmelnitsky 1 for long term operation:
•    Implement safety improvement and modernization measures within CCSUP framework.
•    Assess technical condition of Khmelnitsky 1 components and justify the possibility of extending their life time.
•    Replace components which can not be included into lifetime extension programmes due to technical reasons.
•    Perform equipment qualification for Khmelnitsky 1 systems and components.
•    Based on results obtained from technical condition assessment, develop and implement measures to ensure safe and reliable operation of Khmelnitsky 1 during its long term operation.
•    Preparation of Periodic Safety Reassessment report containing justification of the possibility for long term operation.
•    Providing documentation to SNRIU to make a decision on introducing changes/re-issuance of the License for activities at life-cycle stage “Operation of Khmelnitsky-1 Nuclear Facility” giving the right to power unit extended operation.  

LTO Headquarters were established by the plant order to organize preparation of Khmelnitsky-1 for lifetime extension.

The following basic documents were developed to define procedure for implementation of LTO activities at NPP site:
•    Programme for Khmelnitsky-1 Preparation for Long Term Operation, № 1.NR.7947.PM-17
•    Licensing Plan for Khmelnitsky 1 Long Term Operation, №1.NR.0700.PN-16
•    Provisions on Organization and Procedure for Extending (Reassigning) of KhNPP systems and components useful life, 0.NR.7064.PL-14.
Programme for Khmelnitsky-1 preparation for long term operation defines procedure for lifetime extending of safety related power NPP systems and components.   
    
Currently, the following life extension preparation activities have been completed at Khmelnitsky-1:
1.    Technical condition assessment and life extension of KhNPP-1 main equipment, and buildings and structures, including justification of its possible lifetime extension.
2.    Qualification of power unit components for impact of "severe" environmental conditions and seismic effects.

Works in progress:
•    Implementation of CCSUP measures;
•    Qualification improvement of Kh-1 equipment and systems;
•    Equipment replacement;
•    Safety Reassessment.

Main regulatory documents specifying procedure for NPP lifetime extension (electronic versions of documents)

The Low of Ukraine «On Permit Activy in the field of Nuclear Energy Utilization»
The Low of Ukraine «On Nuclear Energy Use and Radiation Safety»
Convention on Environmental Impact Assessment in a Transboundary Context (Convention Espoo)
Procedure for holding public hearings on nuclear energy and radiation safety issues (approved by CMU Decree № 1122 of 18.06.1998)
Complex (Consolidated) Safety Upgrade Programme for Power Units of Nuclear Power Plants of Ukraine (approved by CMU Decree №1270 of 07.12.2011)
General requirements for power unit lifetime extension based on the Periodic Safety Review results, NP 306.2.099-2004
Instruction on procedure for providing access to public information and working with information requests of SE NNEGC “Energoatom” IN-D.0.32.533-14
Provisions on the procedure for lifetime extending of safety related power NPP systems and components PL-D.0.03.126-10
Decision on implementation of measures on Khmelnitsky-1 lifetime extension, 1.НР.1879.ТР-OZ
Programme for Khmelnitsky-1 Preparation for Long Term Operation
Licensing Plan for Khmelnitsky 1 Long Term Operation, №1.НР.0700.ПН-16
 
CURRENT LIFETIME EXTENSION / REPLACEMENT OF EQUIPMENT
Based on results of the equipment technical assessment and maintenance performed in 2018, lifetime was extended for 24851 equipment items, and 373 lifetime extension decisions were prepared:

Equipment Description

Khmelnitsky 1 and Plant Shared Equipment

Khmelnitsky 2

Equipment Item

Number of Decisions

Equipment Item

Number of Decisions

I&C systems

10359

18

784

7

Electric equipment

7294

104

674

13

Thermal and Mechanical equipment

3920

170

1535

56

Transport Processing equipment

285

5

-

-

Всього

21858

297

2993

76

In 2018, 5 items of equipment were replaced according to the plan due to the end of their operation life and safety upgrade. Please see more details in the table below:

Equipment Description

Khmelnitsky  1,

Equipment Item

Khmelnitsky  2,

Equipment Item

I&C systems

-           

-

Electrical equipment

-           

1

(BTEN-90/380)

Thermal and Mechanical equipment

-           

4

(NOM-К0026.100.140-02.А-E,
MEO-250/25-0,25U-99КА)

Всього

-          *

5

- Information about replacement of I&C system equipment, electrical, and thermal-mechanical equipment at Kmelnitsky-1 will be provided after full works completion including lifetime extension activity during Outage-2018 (after 03.08.2019).

Documents on the lifetime extension of Khmelnitsky-1