last modified: 17-NOV-1997 | catalog | categories | new | search |

NEA-1555 IFPE/INTER-RAMP.

IFPE/INTER-RAMP, Fast Power Ramps Failures of Unpressurised Fuel Rods

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1. NAME OF EXPERIMENT:  IFPE/INTER-RAMP.
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2. COMPUTERS
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Program name Package id Status Status date
IFPE/INTER-RAMP NEA-1555/01 Arrived 17-NOV-1997

Machines used:

Package ID Orig. computer Test computer
NEA-1555/01 Many Computers
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3. DESCRIPTION

The INTER-RAMP programme of work was designed to meet the following main objectives:
- To establish the failure-safe operating limits of 20 standard-type, unpressurized BWR fuel rods on overpower ramping at the burn-up levels of 10 and 20 MWd/kgU. The over-power ramping was to be performed at a fast ramp rate of about 4 kW/m/min with the preceding base irradiation performed with an idealised patterned cyclic variation in power levels designed to represent realistic variations in operating boiling water power reactors.
- To study the influence of three main design parameters on fuel rod performance under power ramping, i.e. clad heat treatment (recrystallised anneal "RX", vs cold work plus stress relief anneal "SR"), pellet/clad diametral gap size, and fuel density.
- To study the failure mechanism and associated phenomena.
- To furnish data suitable for fuel modelling work.
In order to meet these objectives, much effort was expended to record the individual fuel rod power history in great detail and also to determine the fuel rod changes, based on a preirradiation characterisation on a pellet by pellet basis, nondestructive examinations at stages throughout the irradiation history and selective detailed destructive examination of all rods following power ramping.
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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-1555/01 17-NOV-1997 Arrived at NEADB
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10. REFERENCES
NEA-1555/01, included references:
Final Report of the INTER-RAMP Project
STIR-53 (August 1979)
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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. NAME AND ESTABLISHMENT OF AUTHORS

      Studsvik Scandpower AB
      SE-611 82 NYKOEPING
      Sweden

      Compilation: J.A. Turnbull, UK
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16. MATERIAL AVAILABLE
NEA-1555/01
miscellaneous    mag tapeINTER-R.SUM Overview of the Project        MISTP
report           mag tapeINTER-R.QA QA report                       REPTP
miscellaneous    mag tapeREADME.INT Information file                MISTP
test-case data   mag tapePRECHAR.INT Pre-char. for the 20 fuel rods DATTP
test-case data   mag tapePIE.INT PIE measurements                   DATTP
test-case data   mag tape *.abb Irradiation histories for the 20 rodsDATTP
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17. CATEGORIES
  • Y. Integral Experiments Data, Databases, Benchmarks

Keywords: experimental data, failures, fuel elements, fuel rods, fuel-cladding interaction, performance testing.