Experimental Method of In-pile Creep Rupture Behavior of ODS Cladding Materials in the Experimental Fast Reactor Joyo

• DOI: 10.1299/jpes.2.620
• Publication Date: 2008-02-28T05:50:02Z
• Authors: Chikara ITO; Eiichi KAGOTA; Takafumi AOYAMA
• Keywords: Cladding (metalworking); Spall

An in-pile creep rupture experiment was conducted in the experimental fast reactor Joyo to evaluate strength of oxide dispersion strengthened (ODS) ferritic steel under neutron irradiation. ODS has been developed as a most promising fuel cladding material for next generation because its high temperature resistance and low swelling properties. The irradiation test device MAterial testing RIg with COntrol (MARICO) control precision ±4°C. Twenty four specimens no were pressurized by helium gas up 22 MPa accelerate testing. specimen MARICO is controlled changing ratio argon fill gases, which changes gap thermal conductivity between double walled capsule containing specimen. carried out MK-III core from April 2006 until May 2007. Each event successfully detected change at exit gamma-ray spectrometry cover when filled released then identified analyzing tag isotopic using laser resonance ionization mass (RIMS).