Friction forces and fretting wear in reactor core barrel couplings

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F17%3A43931766" target="_blank" >RIV/49777513:23520/17:43931766 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Friction forces and fretting wear in reactor core barrel couplings
Original language description
The couplings key-groove between the lower part of core barrel and reactor pressure vessel in the nuclear VVER-type reactors show small assembling side clearances. Due to fretting wear the potential for increasing of the clearances exist. Reactor vibrations, caused by coolant pressure pulsations generated by main circulation pumps, produce impulse contact forces in the above mentioned couplings. These forces are used for calculation of friction forces in the slipping contact surfaces between the key and the groove and for their fretting wear prediction. Increasing of the clearances leads to decreasing of some reactor frequencies. Their changes present good tool for the interpretation of diagnostic measurements. The computational method with numerical results applied on VVER 1000 type reactor is shown.
Czech name
—
Czech description
—

Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project
<a href="/en/project/LO1506" target="_blank" >LO1506: Sustainability support of the centre NTIS - New Technologies for the Information Society</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)