CORDIS
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Advanced PTS Analysis for LTO

Project information

Grant agreement ID: 945253

Status

Grant agreement signed

  • Start date

    1 October 2020

  • End date

    30 September 2024

Funded under:

H2020-Euratom-1.

  • Overall budget:

    € 4 566 688,75

  • EU contribution

    € 3 999 090

Coordinated by:

UJV REZ, a. s.

Czechia

Objective

In the EU, most of the nuclear power plants (NPPs) are currently in the second half of their designed lifetime, making lifetime extension an important aspect for the EU countries. One of the most limiting safety assessments for long term operation (LTO) is the reactor pressure vessel (RPV) integrity assessment for pressurized thermal shock (PTS). The goal is to demonstrate the safety margin against fast fracture initiation or RPV failure. To verify safe operation of existing NPPs going through LTO upgrades, advanced methods and improvements are necessary.
In the EU, currently used PTS analyses are based on deterministic assessment and conservative boundary conditions. This type of PTS analyses is reaching its limits in demonstrating the safety for NPPs facing LTO and need to be enhanced. However, inherent safety margins exist and several LTO improvements and advanced methods are intended to increase the safety margins of PTS analysis. Additionally, the quantification of safety margins in terms of risk of RPV failure by advanced probabilistic assessments becomes more important.
The main objectives of this project are establishing of state-of-the-art for LTO improvements having an impact on PTS analysis: NPP improvements (hardware, software, procedures), development of advanced deterministic and probabilistic PTS assessment method including thermal hydraulic (TH) uncertainty analyses, quantification of safety margins for LTO improvements and development of best-practice guidance.
After establishing the LTO improvements, TH calculations will be performed including also uncertainty quantification relevant to PTS assessment. Benchmark calculations for both deterministic and probabilistic RPV integrity assessment will be performed with the goal to establish the impact of LTO improvements and TH uncertainties on the overall RPV integrity margins.

Coordinator

UJV REZ, a. s.

Address

Hlavni 130, Rez
250 68 Husinec

Czechia

Activity type

Private for-profit entities (excluding Higher or Secondary Education Establishments)

EU Contribution

€ 466 751,25

Participants (13)

FRAMATOME GMBH

Germany

EU Contribution

€ 525 812,50

PAUL SCHERRER INSTITUT

Switzerland

EU Contribution

€ 439 436,25

IPP CENTRE LLC

Ukraine

EU Contribution

€ 202 563,75

KIWA INSPECTA TECHNOLOGY AB

Sweden

EU Contribution

€ 405 053,75

TECNATOM S.A.

Spain

EU Contribution

€ 227 230

GESELLSCHAFT FUR ANLAGEN UND REAKTORSICHERHEIT (GRS) gGmbH

Germany

EU Contribution

€ 218 878,75

BAY ZOLTAN ALKALMAZOTT KUTATASI KOZHASZNU NONPROFIT KFT.

Hungary

EU Contribution

€ 255 000

EURICE EUROPEAN RESEARCH AND PROJECT OFFICE GMBH

Germany

EU Contribution

€ 365 875

INSTITUT JOZEF STEFAN

Slovenia

EU Contribution

€ 250 000

INSTITUT DE RADIOPROTECTION ET DE SURETE NUCLEAIRE

France

EU Contribution

€ 170 862,50

LAPPEENRANNAN-LAHDEN TEKNILLINEN YLIOPISTO LUT

Finland

EU Contribution

€ 235 876,25

POLITECHNIKA WARSZAWSKA

Poland

EU Contribution

€ 133 250

STATE ENTERPRISE STATE SCIENTIFIC AND TECHNICAL CENTER FOR NUCLEAR AND RADIATION SAFETY

Ukraine

EU Contribution

€ 102 500

Project information

Grant agreement ID: 945253

Status

Grant agreement signed

  • Start date

    1 October 2020

  • End date

    30 September 2024

Funded under:

H2020-Euratom-1.

  • Overall budget:

    € 4 566 688,75

  • EU contribution

    € 3 999 090

Coordinated by:

UJV REZ, a. s.

Czechia