Publication detail
SIMULATION OF OPERATIONAL LOADING OF PRESSURE EQUIPMENT BY MEANS OF NON-DESTRUCTIVE TESTING
MAHMOUD, H. VLAŠIC, F. MAZAL, P.
Czech title
Simulace provozního zatěžování tlakových zařízení pomocí nedestruktivního zkoušení
English title
SIMULATION OF OPERATIONAL LOADING OF PRESSURE EQUIPMENT BY MEANS OF NON-DESTRUCTIVE TESTING
Type
conference paper
Language
en
Original abstract
Managing instrumentation and control obsolescence, improving the safety, and extending the lifetime of older nuclear reactors (such as VVER-440) are the primary objectives of nuclear power plants in Central and Eastern Europe. Extending reactor life to 60 years and beyond will likely increase susceptibility and severity of known forms of degradation. Additionally, new mechanisms of materials degradation are also possible. Therefore, it is necessary to examine on a regular basis the structures, systems and components of the reactor facility using specific techniques such as those based on non-destructive testing to conduct special inspections with varied objectives. The main purpose of this paper is to present the advanced procedures for monitoring degradation processes under static and dynamic loading (simulation of operational loading of pressure equipment) using acoustic emission technique. It is one of the most powerful non-destructive methods for assessing active processes occurring in the loaded material. Experiments have been performed on specimens made of Cr–Ni–Mo–V nuclear ferritic steel (known as 15Ch2NMFA) at room temperature. The acoustic emission results showed a clear response to loaded specimens with and without a crack.
Czech abstract
Zlepšení bezpečnosti a prodloužení životnosti starších jaderných reaktorů (jako VVER-440), jsou hlavními cíli jaderných elektráren ve střední a východní Evropě. Prodloužení životnosti reaktorů alespoň na 60 let pravděpodobně zvýší citlivost a závažnost známých forem degradace materiálů. Jsou také možné nové mechanismy degradace materiálů. Proto je třeba pravidelně sledovat stav struktur, systémů a komponent reaktoru pomocí specifických technik, jako jsou např. speciální kontroly na bázi nedestruktivního testování. Hlavním cílem tohoto článku je představit moderní postupy pro sledování procesů degradace při statickém a dynamickém zatížení (simulace provozního zatížení tlakového zařízení) s využitím akustické emise techniky. Je to jedna z nejsilnějších nedestruktivních metod pro hodnocení procesů probíhající v materiálu. Experimenty byly provedeny na vzorcích vyrobených z Cr-Ni-Mo-V jaderné feritické oceli (známý jako 15Ch2NMFA) při pokojové teplotě. Výsledky akustické emise jasně ukazují rozdíly mezi zatíženými vzorky s a bez trhliny.
English abstract
Managing instrumentation and control obsolescence, improving the safety, and extending the lifetime of older nuclear reactors (such as VVER-440) are the primary objectives of nuclear power plants in Central and Eastern Europe. Extending reactor life to 60 years and beyond will likely increase susceptibility and severity of known forms of degradation. Additionally, new mechanisms of materials degradation are also possible. Therefore, it is necessary to examine on a regular basis the structures, systems and components of the reactor facility using specific techniques such as those based on non-destructive testing to conduct special inspections with varied objectives. The main purpose of this paper is to present the advanced procedures for monitoring degradation processes under static and dynamic loading (simulation of operational loading of pressure equipment) using acoustic emission technique. It is one of the most powerful non-destructive methods for assessing active processes occurring in the loaded material. Experiments have been performed on specimens made of Cr–Ni–Mo–V nuclear ferritic steel (known as 15Ch2NMFA) at room temperature. The acoustic emission results showed a clear response to loaded specimens with and without a crack.
Keywords in Czech
akustická emise, tlaková zařízení, tlaková zkouška, únava, trhlina
Keywords in English
acoustic emission, pressure equipment, pressure test, fatigue, crack
RIV year
2015
Released
03.06.2015
Publisher
Tanger Ltd.
Location
Brno
ISBN
978-80-87294-58-1
Book
METAL 2015
Edition number
1
Pages from–to
321–327
Pages count
7
BIBTEX
@inproceedings{BUT115677,
author="Houssam {Mahmoud} and František {Vlašic} and Pavel {Mazal},
title="SIMULATION OF OPERATIONAL LOADING OF PRESSURE EQUIPMENT BY MEANS OF NON-DESTRUCTIVE TESTING",
booktitle="METAL 2015",
year="2015",
month="June",
pages="321--327",
publisher="Tanger Ltd.",
address="Brno",
isbn="978-80-87294-58-1"
}