Integral Experiments Data, Databases, Benchmarks and Safety Joint Projects
NEA-1555 IFPE/INTER-RAMP.
last modified: 17-NOV-1997 | catalog | 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 preceeding 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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9. STATUS
Package ID Status date Status
NEA-1555/01 17-NOV-1997 Masterfiled restricted
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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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12. PROGRAMMING LANGUAGE(S) USED
No specified programming language
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15. AUTHORS

Studsvik Scandpower AB

SE-611 82 NYKOEPING

Sweden

 

Compilation: J.A. Turnbull

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16. MATERIAL AVAILABLE
NEA-1555/01
*.abb          Irradiation histories for the 20 rod
PIE.INT        PIE measurements
INTER-R.SUM    Overview of the Project
INTER-R.QA     QA report
README.INT     Readme file
PRECHAR.INT    Pre-characterization of the fuel rods
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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.