U.S. Department of EnergyOffice of Scientific and Technical Information
Recent results on the RIA test in IGR reactor
Abstract
At the 23d WRSM meeting the data base characterizing results of VVER high burnup fuel rods tests under reactivity-initiated accident (RIA) conditions was presented. Comparison of PWR and VVER failure thresholds was given also. Additional analysis of the obtained results was being carried out during 1996. The results of analysis show that the two different failure mechanisms were observed for PWR and VVER fuel rods. Some factors which can be as the possible reasons of these differences are presented. First of them is the state of preirradiated cladding. Published test data for PWR high burnup fuel rods demonstrated that the PWR high burnup fuel rods failed at the RIA test are characterized by very high level of oxidation and hydriding for the claddings. Corresponding researches were performed at Institute of Atomic Reactors (RLAR, Dimitrovgrad, Russia) for large set of VVER high burnup fuel rods. Results of these investigations show that preirradiated commercial Zr-1%Nb claddings practically keep their initial levels of oxidation and H{sub 2} concentration. Consequently the VVER preirradiated cladding must keep the high level of mechanical properties. The second reason leading to differences between failure mechanisms for two types of high burnup fuel rods can be the test conditions.more »
- Authors:
-
- Nuclear Safety Institute, Moscow (Russian Federation)
- Publication Date:
- Research Org.:
- US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Office of Nuclear Regulatory Research; Brookhaven National Lab. (BNL), Upton, NY (United States)
- OSTI Identifier:
- 468647
- Report Number(s):
- NUREG/CP-0157-Vol.1; CONF-9610202-Vol.1
ON: TI96014720; TRN: 97:008524
- Resource Type:
- Conference
- Resource Relation:
- Conference: 24. water reactor safety information meeting, Bethesda, MD (United States), 21-23 Oct 1996; Other Information: PBD: Jan 1997; Related Information: Is Part Of Proceedings of the twenty-fourth water reactor safety information meeting. Volume 1: Plenary session; High burnup fuel; Containment and structural aging; Monteleone, S. [comp.] [Brookhaven National Lab., Upton, NY (United States)]; PB: 372 p.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 22 NUCLEAR REACTOR TECHNOLOGY; 21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; FUEL CANS; FUEL ELEMENT FAILURE; FUEL ELEMENTS; BURNUP; REACTIVITY; PWR TYPE REACTORS
Citation Formats
Asmolov, V, and Yegorova, L. Recent results on the RIA test in IGR reactor. United States: N. p., 1997.
Web.
Asmolov, V, & Yegorova, L. Recent results on the RIA test in IGR reactor. United States.
Asmolov, V, and Yegorova, L. 1997.
"Recent results on the RIA test in IGR reactor". United States. https://www.osti.gov/servlets/purl/468647.
@article{osti_468647,
title = {Recent results on the RIA test in IGR reactor},
author = {Asmolov, V and Yegorova, L},
abstractNote = {At the 23d WRSM meeting the data base characterizing results of VVER high burnup fuel rods tests under reactivity-initiated accident (RIA) conditions was presented. Comparison of PWR and VVER failure thresholds was given also. Additional analysis of the obtained results was being carried out during 1996. The results of analysis show that the two different failure mechanisms were observed for PWR and VVER fuel rods. Some factors which can be as the possible reasons of these differences are presented. First of them is the state of preirradiated cladding. Published test data for PWR high burnup fuel rods demonstrated that the PWR high burnup fuel rods failed at the RIA test are characterized by very high level of oxidation and hydriding for the claddings. Corresponding researches were performed at Institute of Atomic Reactors (RLAR, Dimitrovgrad, Russia) for large set of VVER high burnup fuel rods. Results of these investigations show that preirradiated commercial Zr-1%Nb claddings practically keep their initial levels of oxidation and H{sub 2} concentration. Consequently the VVER preirradiated cladding must keep the high level of mechanical properties. The second reason leading to differences between failure mechanisms for two types of high burnup fuel rods can be the test conditions. Now such kind of analysis have been performed by two methods.},
doi = {},
url = {https://www.osti.gov/biblio/468647},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}