ANIMMA 2021

Session

06 Severe Accident Monitoring

Jun 23, 2021, 2:00 PM

3rd floor (Clarion Congress Hotel Prague)

Conveners

06 Severe Accident Monitoring

• Frank RUDDY (Ruddy Consulting)
• Abdallah LYOUSSI (CEA)

06 Severe Accident Monitoring: Parallel Intensive Oral Sessions

• Jose BUSTO (CPPM / Aix-Marseille Univ)
• Christian BOHM (University of Stockholm, Sweden)

Description

Oral Session

Presentation materials

ZOOM link - 06 Severe Accident Monitoring (23/06)

ZOOM link - Parallel Intensive Oral Sessions - AQUARIUS (23/06)

239. #06-239 X-Ray Imaging Calibration for Fuel-Coolant Interaction Experimental Facilities

JOURNEAU, Christophe (CEA)

6/23/21, 2:00 PM

06 Severe Accident Monitoring

Oral presentation

During a severe accident in sodium-cooled fast reactors, jets of molten nuclear fuel may penetrate into the coolant resulting in fuel-coolant interactions (FCI). Experimental programs are being conducted to study this phenomenology and to support the models development for evaluating consequences of severe accident. Due to the optical opacity of the test section walls and sodium coolant,...

208. #06-208 Optimized High Temperature Irradiation Resistant Thermocouple for Fast Response Measurements

SKIFTON, Richard (Idaho National Laboratory)

6/23/21, 2:20 PM

06 Severe Accident Monitoring

Oral presentation

The High Temperature Irradiation Resistant thermocouple (HTIR-TC) is the only temperature probe proven to withstand both the high temperatures (e.g. >1290 °C) and high radiation (e.g. up to a fluence of 1E21 n/cm2) of nuclear reactor fuel design tests and/or over-temperature accident conditions. The HTIR-TC heat treatment, calibration, and in-pile performance during the Advanced Gas Reactor...

62. #06-62 Design and characterization of a gamma imaging system for fuel rod deformations

AMOYAL, Guillaume (Université Paris-Saclay, CEA)

6/23/21, 2:40 PM

06 Severe Accident Monitoring

Oral presentation

The study of accidental situations is one of the major asset for nuclear industry in guaranteeing the so-called regulated safety of its electricity production facilities. The Loss Of Coolant Accident (LOCA) is tested in experimental reactor and hot cell to verify the mechanical properties of the fuel rod, the safety criteria and the associated calculation codes. The VINON-LOCA experimental...

49. #06-49 MERARG Experimental Loop: A new deconvolution Method for FGR analysis

LOSFELD, Jimmy (CEA, DES, IRESNE, DEC/SA3E)

6/23/21, 3:00 PM

06 Severe Accident Monitoring

Oral presentation

MERARG experimental loop hosted at the LECA-STAR Hot Laboratory (CEA Cadarache) allows characterizing nuclear fuels with respect to the behavior of fission gases during thermal transients representative of accident conditions such as for example loss of coolant accident (LOCA). MERARG loop consists of three main parts: 1- an induction furnace 2- a gamma spectrometry detector 3- a glove box...

47. #06-47 Analysis of the Signal over Noise Ratio of the hodoscope determined by Monte Carlo calculation

DI SALVO, Jacques (IRSN), MIROTTA, Salvatore (IRSN)

6/23/21, 3:20 PM

06 Severe Accident Monitoring

Oral presentation

The CABRI experimental pulse reactor, located at the Cadarache nuclear research center, southern France, is devoted to the study of Reactivity Initiated Accidents (RIA) for the purpose of the CABRI International Program (CIP), managed by IRSN in the framework of an OECD/NEA agreement. The hodoscope equipment installed in the CABRI reactor is a unique online fuel motion monitoring system,...

172. #06-172 Long-term transmission characteristics of CYTOP fiber exposed by gamma radiation

CHAPALO, Ivan (University of Mons)

6/23/21, 4:45 PM

06 Severe Accident Monitoring

Poster

Polymer optical fibers (POFs) have been attracting substantial attention from research and industry thanks to particular mechanical properties, simple handling, biomedical compatibility and safety. Among POFs, cyclic transparent amorphous fluoropolymer (CYTOP) fiber demonstrates radically low attenuation in the telecom transparency windows of 850 and 1310 nm, thus becoming an efficient...

66. #06-66 The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod

BIARD, Bruno (CEA, DES, IRESNE, DEC, Cadarache F-13108 Saint-Paul-Lez-Durance, France)

6/23/21, 4:50 PM

06 Severe Accident Monitoring

Poster

Since the Halden loss-of-coolant accident (LOCA) test series IFA-650, a major safety interest has raised for Fuel Fragmentation, Relocation and Dispersal (FFRD) during a LOCA sequence. Besides the characteristics and the behavior of the fuel ejected from the rod after the clad burst, the occurrence of the ballooning, of the fuel fragmentation and of the possible fuel relocation within the rod...