Abstract
Due to the aging of electric power infrastructure, its maintenance and repair costs are increasing.
Therefore, we need a high-performance diagnostic tool to estimate the infrastructure’s degradation
condition and its life. Laser-induced breakdown spectroscopy (LIBS) is an attractive tool for the
diagnosis of infrastructure because it has several advantages over other analytical methods, such as fast,
on-site, and remote measurement of trace elements. In this paper, we explain our recent results on LIBS
applications for the diagnosis of electric power infrastructures, such as the quantitative measurement of
chlorine concentration distribution in concrete infrastructure, the remote measurement of salt deposition
on porcelain insulators, and the remote quantitative measurement of chlorine concentration in salt on
stainless steel in a narrow space by simulating the gap between a canister and a concrete body in a
concrete cask.
