Abstract
The results of coupled nuclear codes, WIMS-CITATION-ANISN-ORIGEN/MCNP-ORIGEN, and gamma spectrometry measurements of representative samples are compared. Based on this methodology, the radiation level of the reactor block materials at 4050 days after shutdown could be estimated. The aluminum and graphite are the most activated waste material. Iron cast and concrete are radioactive wastes, too.
Highlights
An important consideration in the design of nuclear reactors is providing access to the reactor system for maintenance and repair[1]
Several technical computer codes are available that will permit calculating of the actinides and fission products[2]
The reactor block made of many materials, so the outcore activity comes from them
Summary
An important consideration in the design of nuclear reactors is providing access to the reactor system for maintenance and repair[1]. The radiation monitoring purpose in reactor site is determining the radioactive source that arises outside the core. Sources outside the core are gammas from the capture of thermal neutrons, gamma from inelastic scattering of fast neutrons, gammas from activated materials, and photo-neutrons[1]. Operation of nuclear fission reactors results in a significant formation of actinides and fission products. Several technical computer codes are available that will permit calculating of the actinides and fission products[2]. By different computer codes, university and research codes, out-core radioactivity determines in VVR-S 2MWth research reactor after reactor shutdown
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