NEA-1594 IFPE/AEAT-IMC.

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

NAME OF EXPERIMENT, COMPUTER, DESCRIPTION, SOLUTION, RESTRICTIONS, CPU, FEATURES, AUXILIARIES, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM, OTHER RESTRICTIONS, ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OF EXPERIMENT: IFPE/AEAT-IMC.

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.

Program name	Package id	Status	Status date
IFPE/AEAT-IMC/NFB-8	NEA-1594/01	Arrived	15-MAR-1999
IFPE/AEAT-IMC/NFB-34	NEA-1594/02	Arrived	15-MAR-1999

Machines used:

Package ID	Orig. computer	Test computer
NEA-1594/01	Many Computers
NEA-1594/02	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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4. METHODS

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

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6. TYPICAL RUNNING TIME

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7. UNUSUAL FEATURES

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8. RELATED OR AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
NEA-1594/01	15-MAR-1999	Arrived at NEADB
NEA-1594/02	15-MAR-1999	Arrived at NEADB

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10. REFERENCES

NEA-1594/01, 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)

NEA-1594/02, included references:

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11. HARDWARE REQUIREMENTS

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12. PROGRAMMING LANGUAGE(S) USED

No item found

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13. SOFTWARE REQUIREMENTS

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

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15. ESTABLISHMENT OF 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, UK

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16. MATERIAL AVAILABLE

NEA-1594/01

INC.SUM Text file giving a description of the experiments
READ.ME Readme file
NFB8-1.DAT     Data file for experiment No.1
NFB8-2.DAT     Data file for experiment No.2
NFB8-3.DAT     Data file for experiment No.3
NFB8-4.DAT     Data file for experiment No.4
NFB8-5.DAT     Data file for experiment No.5
NFB8-6.DAT     Data file for experiment No.6
NFB8-7.DAT     Data file for experiment No.7
NFB8-8.DAT     Data file for experiment No.8
NFB8-9.DAT     Data file for experiment No.9
NFB8-10.DAT     Data file for experiment No.10
QA Report for IMC Experiments in PDF format

NEA-1594/02

INC.SUM Text file giving a description of the experiments
READ.ME Readme file
NFB34-1.DAT     Data file for experiment No.1
NFB34-2.DAT     Data file for experiment No.2
NFB34-3.DAT     Data file for experiment No.3
NFB34-4.DAT     Data file for experiment No.4
NFB34-5.DAT     Data file for experiment No.5
NFB34-6.DAT     Data file for experiment No.6
NFB34-7.DAT     Data file for experiment No.7
NFB34-8.DAT     Data file for experiment No.8
NFB34-9.DAT     Data file for experiment No.9
NFB34-10.DAT     Data file for experiment No.10
NFB34-11.DAT     Data file for experiment No.11
NFB34-12.DAT     Data file for experiment No.12
QA Report for IMC Experiments in PDF format

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17. CATEGORIES

Y. Integral Experiments Data, Databases, Benchmarks

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