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Validation of constraint-based assessment methodology in structural integrity

Project information

Grant agreement ID: FIKS-CT-2000-00090

  • Start date

    1 October 2000

  • End date

    29 February 2004

Funded under:

FP5-EAECTP C

  • Overall budget:

    € 1 747 339

  • EU contribution

    € 746 169

Coordinated by:

SERCO LTD

United Kingdom

Objective

At present, there is a disparity between the characteristics measured on nuclear reactor components and test specimens. In particular, in the pattern of crack-tip stresses and strains causing plastic flow and fracture (the so-called constraint effect). Crack-tip constraint in components is generally lower than in test specimens and effective toughness is correspondingly higher. The toughness measured on standard test specimens is therefore likely to underestimate that exhibited by cracks in components. The purpose of this project is to develop and validate, by an iterative process of experiment and analysis, innovative procedures for assessing possible states of crack-tip constraint in ageing nuclear pressure boundary components.

This will provide nuclear plant operators and regulators with:
(i) improved predictions of safety margins under normal and abnormal conditions, using a validated defect assessment methodology;
(ii) improved lifetime extension arguments.

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Coordinator

SERCO LTD

Address

The Quadrant 404, Birchwood Park
Wa3 6at Warrington

United Kingdom

Participants (12)

AEA TECHNOLOGY PLC

United Kingdom

BRITISH NUCLEAR FUELS PLC

United Kingdom

COMMISSARIAT A L'ENERGIE ATOMIQUE

France

COMMISSION OF THE EUROPEAN COMMUNITIES

Netherlands

E.ON KERNKRAFT GMBH

Germany

ELECTRICITE DE FRANCE

France

FRAMATOME ANP GMBH

Germany

NUCLEAR RESEARCH INSTITUTE REZ A.S.

Czechia

OAK RIDGE NATIONAL LABORATORY

United States

SOCIETE FRAMATOME

France

TECHNICAL RESEARCH CENTRE OF FINLAND

Finland

UNIVERSITAET STUTTGART

Germany

Project information

Grant agreement ID: FIKS-CT-2000-00090

  • Start date

    1 October 2000

  • End date

    29 February 2004

Funded under:

FP5-EAECTP C

  • Overall budget:

    € 1 747 339

  • EU contribution

    € 746 169

Coordinated by:

SERCO LTD

United Kingdom

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