METHOD OF MANUFACTURING SPENT NUCLEAR FUEL STORAGE RACK, FILLER MATERIAL USED FOR THIS METHOD AND THE SPENT NUCLEAR FUEL STORAGE RACK MANUFACTURED BY THE METHOD

摘要

PPROBLEM TO BE SOLVED: To improve the performance of a weld joint made of austenitic stainless steel containing boron. PSOLUTION: In a method of manufacturing a spent nuclear fuel storage rack manufactured by welding the austenitic stainless steel containing boron, a filler material used for welding contains C of 0.1 mass% or less, Si of 0.05-0.65 mass%, Mn of 1.0-2.5 mass%, P of 0.03 mass% or less, S of 0.03 mass% or less, Ni of 9.0-12.0 mass% (or Ni of 12.0-15.0 mass%), Cr of 19.5-23.5 mass% (or Cr of 23.0-27.0 mass%), N of 0.1 mass% or less, Mo of 1.0 mass% or less and Cu of 1.0 mass% or less and is taken to be composed of remainder inevitable impurities and Fe and the content of ferrite in weld metal is set at 4.8-15 mass%. PCOPYRIGHT: (C)2010,JPO&INPIT