Thermal fatigue evaluation of piping system "tee"- connection

Objective

Thermal fatigue is a recurring problem when LWR plants become older and life time extension activities are initiated. In general, the common thermal fatigue issues are understood and can be controlled by plant instrumentation systems. However, the Civaux 1 and other incidents indicate that certain piping system Tee's are susceptible to turbulent temperature mixing effects that cannot be adequately monitored by common thermocouple instrumentations, putting the reliability of integrity evaluation procedures in doubt. THERFAT proposes to review field data and perform advanced thermohydraulic flow simulations and stress and fracture analysis. Critical elements of the procedure will be investigated by targeted verification tests. Proposals will be made for improved thermal fatigue assessment procedures, screening criteria and for establishing a European Methodology on Thermal Fatigue.

Programme(s)

• FP5-EAECTP C - Research and training programme (Euratom) in the field of nuclear energy (1998 to 2002)

Topic(s)

• 2.1.2.-1.1.1 - Integrity of equipment and structures

Call for proposal

Data not available

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

E. ON KERNKRAFT GMBH

Address

Tresckowstrasse 5
30457 Hannover
Germany

Participants (15)

CINAR LTD.

United Kingdom

Address

Elvaston Place 11
SW7 5QG London

COMMISSARIAT A L'ENERGIE ATOMIQUE

France

Address

Cea Cadarache
13108 St.paul Les Durance

COMMISSION OF THE EUROPEAN COMMUNITIES

Netherlands

Address

Westerduinweg 3
1755 ZG Petten

ELECTRICITE DE FRANCE

France

Address

Avenue Dutriévoz 12-14
69628 Villeurbanne

ENDESA GENERACION S.A.

Spain

Address

Principe De Vergara 187
28002 Madrid

FORTUM NUCLEAR SERVICES OY

Finland

Address

Keilaniementie 1
00048 Espoo

FRAMATOME ANP GMBH

Germany

Address

Berlinerstrasse 295
63067 Offenbach (Am Main)

FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.*

Germany

Address

Woehlerstrasse 11
79108 Freiburg (In Breisgau)

JOZEF STEFAN INSTITUTE

Slovenia

Address

Jamova 39
1001 Ljubljana

Links

SIEMPELKAMP PRUEF- UND GUTACHTER-GESELLSCHAFT MBH

Germany

Address

Am Lagerplatz 6a
01072 Dresden

SOCIETE FRAMATOME

France

Address

Tour Framatome
92084 Paris La Defense

STAATLICHE MATERIALPRUEFUNGSANSTALT

Germany

Address

Pfaffenwaldring 32 Universität Stuttgart
70569 Stuttgart

TECHNICAL RESEARCH CENTRE OF FINLAND

Finland

Address

3,kemistintie 3
02044 Espoo

TECNATOM S.A.

Spain

Address

1,avenida Montes De Oca 1
28709 San Sebastian De Los Reyes - Madrid

VUJE TRNAVA INC - ENGINEERING, DESIGN AND RESEARCH ORGANISATION

Slovakia

Address

Okruzna 5
918 64 Trnava