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Management of Nuclear Plant Operation by Optimising Weld Repairs

Objective

Development of advanced weld repair and assessment technologies will reduce unplanned outage time and thereby increase the economic performance and safety of the nuclear power industry. Optimised weld repair procedures and alternative post-weld treatments are to be developed that will shorten repair time-scales, minimise residual stresses and improve component life and integrity.

Assessment methodology for treating defects in residual stress fields will be refined to give more accurate and informed sentencing of defects in ageing plant; this will lead to fewer repairs (reducing outage times) and greater assurance of safety. State-of-art numerical methods will be used to develop the technologies and demonstrate structural integrity. Mock-up trials combined with conventional testing and advanced experimental methods(e.g. neutron diffraction, deep-hole drilling and laser strain scanning) will be used thunder write the new procedures. Guidelines for inclusion in Codes and Standards will deliver the new technologies to wider industry.

Coordinator

INSTITUT DE SOUDURE
Address
Centre André Leroy Zone Industrielle Les Jonquièr
57365 Ennery
France

Participants (6)

BRITISH ENERGY GENERATION LTD
United Kingdom
Address
Barnett Way, Barnwood
GL4 3RS Gloucester
COMMISSION OF THE EUROPEAN COMMUNITIES
Netherlands
Address
Westerduinweg 3
1755 ZG Petten
FRAMATOME ANP GMBH
Germany
Address
Freyeslebenstrasse 1
91058 Erlangen
INDUSTEEL FRANCE SA
France
Address
Rue Clémenceau 56
71200 Le Creus0t
MITSUI BABCOCK ENERGY LTD*
United Kingdom
Address
Porterfield Road
PA4 8DJ Renfrew
UNIVERSITY OF BRISTOL
United Kingdom
Address
University Walk
BS8 1TR Bristol, Clifton