Integral Experiments Data, Databases, Benchmarks and Safety Joint Projects
NEA-1594 IFPE/AEAT-IMC.
last modified: 16-JAN-2023 | catalog | new | search |

NEA-1594 IFPE/AEAT-IMC.

IFPE/AEAT-IMC, Onset Gas Release and Grain Face Venting Rates in Fuels

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1. NAME OF EXPERIMENT

IFPE/AEAT-IMC

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2. COMPUTERS

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Program name Package id Status Status date
IFPE/AEAT-IMC NEA-1594/03 Arrived 16-JAN-2023

Machines used:

Package ID Orig. computer Test computer
NEA-1594/03 Many Computers
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3. DESCRIPTION

The series of experiments performed by AEA Technology at Harwell and released by the Health and Safety Executive investigates the relative importance of the effective gas atom diffusion coefficient, the capacity of grain boundary bubbles and the fuel grain size under conditions more nearly representative of a fault transient rather than of normal operation.

 

Small samples of UO2 fuel were obtained from CAGR fuel pins and annealed in a pre-defined high temperature, 1500 to 1900 C, for periods of between 2 and 40 hours. The release rate of 85-Kr was monitored continuously throughout each test. The rate at which the final temperature was attained varied from 0.1 to 8 degrees C/s in order to determine whether or not the behaviour of intergranular bubbles was sensitive to changes in temperature ramp rate within this range. The fuel used for these tests had a burn-up of ~17 MWd/kgU and had two mean linear intercept grain sizes, 6 and 18 microns.

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9. STATUS
Package ID Status date Status
NEA-1594/03 16-JAN-2023 Masterfiled restricted
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10. REFERENCES
NEA-1594/03, included references:
- P.S. Copeland, R. Williamson and M.V. Speight: The Release Kinetics of 85Kr
from UO2 at High Temperatures, AEA TSD 0626 (December 1995)
- P.S. Copeland: Onset of Gas Release and Grain Face Venting Rates in Large
Grain Fuel, AEAT-0254 (March 1996)
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12. PROGRAMMING LANGUAGE(S) USED
No specified programming language
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15. AUTHORS

AEA Technology

Materials and Chemistry Group

220.29 Harwell, Didcot

Oxfordshire OX11 0RA

United Kingdom

 

Health and Safety Executive

Bootle, Merseyside L20 3LZ

United Kingdom

 

Compilation: J.A. Turnbull

 

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16. MATERIAL AVAILABLE
NEA-1594/03
NFB8-*.DAT Data file for Sample NFB8-1 to 10
NFB34-1.DAT Data file for Sample NFB34-1 to 12
IMC.SUM Description of experiments
QA report IMC.pdf QA Report for IMC Experiments in PDF format
READ.ME Readme file
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17. CATEGORIES
  • Y. Integral Experiments Data, Databases, Benchmarks

Keywords: experimental data, fission gas release, fuel pellets, fuel rods.