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Research Papers: Nuclear Power

A Method to Evaluate Fission Gas Release During Irradiation Testing of Spherical Fuel

[+] Author and Article Information
Hanno van der Merwe1

 Pebble Bed Modular Reactor (Pty) Ltd., 1279 Mike Crawford Avenue, Centurion 0046, South Africahanno.vdmerwe@pbmr.co.za

Johan Venter

 Pebble Bed Modular Reactor (Pty) Ltd., 1279 Mike Crawford Avenue, Centurion 0046, South Africa

1

Corresponding author.

J. Eng. Gas Turbines Power 131(5), 052902 (Jun 09, 2009) (7 pages) doi:10.1115/1.3097131 History: Received October 23, 2008; Revised November 10, 2008; Published June 09, 2009

The evaluation of fission gas release from spherical fuel during irradiation testing is critical to understand expected fuel performance under real reactor conditions. Online measurements of krypton and xenon fission products explain coated particle performance and contributions from graphitic matrix materials used in fuel manufacture and irradiation rig materials. Methods that are being developed to accurately evaluate fission gas release are described here together with examples of evaluations performed on irradiation tests HFR-K5, -K6, and EU1bis.

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Copyright © 2009 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Effective uranium contamination in the matrix material for test element HFR-K6/1

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Figure 2

R/B versus half-life graph, HFR-K5/2, cycle 12

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Figure 3

R/B versus half-life graph, HFR-K5/2, cycle 24

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Figure 4

Measured and calculated K88rR/B comparison for test element K6/2

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Figure 5

R/B versus half-life graph, HFR-K6/4, cycle 4

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Figure 6

R/B versus half-life graph, HFR-K6/4, cycle 24

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Figure 7

Measured and calculated X135 meR/B comparison for test element K6/4

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Figure 8

Measured K88rR/B and sphere /4 temperatures

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Figure 9

Measured and calculated K88rR/B for contamination and one failed particle

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Figure 10

Measured and calculated K88rR/B

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Figure 11

Measured and calculated K85 mrR/B

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Figure 12

Measured and calculated X135eR/B

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Figure 13

R/B versus half-life graph for HFR-EU1bis, cycle 13

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Figure 14

R/B versus half-life graph, HFR-EU1bis, cycle 10

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