Naslov
Advantages of Time of Flight Diffraction (TOFD) technic and R6 Structural Integrity Assessment Procedure for Nuclear Power Plant Components

Autori
Dukić, Predrag ; Dukić, Ines

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Nuclear Energy in Central Europe 2000 / Nuclear Society of Slovenia - Ljubljana, 2000

Skup
Nuclear Energy in Central Europe 2000

Mjesto i datum
Bled, Slovenija, 11.09.2000. - 14.09.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
TOFD ultrasonic examination; R6 structural integrity procedure; nuclear power plant

Sažetak
In service inspection (ISI) of aged power plant parts has a delicate task to provide information on presence, position, orientation and size of defects in material. As far as results of ISI are just a starting point for elaborate procedure of structural integrity assessment, the accuracy and reliability of these results are particularly important. Time of Flight Diffraction (TOFD) technique is regarded as superior ultrasonic technique capable to fulfil required goals. In Slovenia TOFD is approved in nowdays rutine inspection of components of conventional power plants. As there were no practical use of TOFD in Slovenian NPP yet, some experiance from Slovenian conventional thermal power plant are presented. Results of TOFD inspections of turbine rotor and turbine inlet casting are shown. Simplified integrity assessment procedure (Nuclear electric R6 procedure can satisfy needs for assessing integrity of components in conventional PP, insted of detailed 3-D finite element simulation. Example of application of R6 procedure in conventional PP is shown in this paper. Although R6 results are relatively conservative, this relatively simple to use procedure could meet requirements for assessing safety margins in domestic Nuclear power plant too.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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