Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 334, Issue 2-3, Pages 109-114Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2004.05.005
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Nickel-base hardfacing alloys have been chosen to replace cobalt-base alloys as hardfacing material for components of the Indian Prototype Fast Breeder Reactor, for minimising the dose rate to personnel during maintenance and decommissioning, and to reduce the shielding thickness required for component handling. Induced activity, dose rate and shielding computations showed that replacing cobalt-base alloys with nickel-base alloys for hardfacing of components would result in a marked reduction in both the dose rate from the components and the thickness of lead handling flasks. Long-term ageing studies on the nickel-base hardface deposits on austenitic stainless steel showed that the hardface deposit would retain adequate hardness at the end of the components' design service-life of 40 years of exposure at 823 K. (C) 2004 Elsevier B.V. All rights reserved.
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