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EDF Dampierre implements acoustic emission testing
To check the leaktightness of the cooling water discharge lines of the EDF nuclear plant located in Dampierre (France), a 1,800-meter long pipe was tested by acoustic emission. No leak was detected!
Further to the more stringent safety criteria imposed after the accident of the Fukushima Daiichi nuclear plant in Japan, the EDF Nuclear Power Production Centre (CNPE) in Dampierre en Burly (Loiret, France) asked Cetim to check the perfect leaktightness of the line which discharges the effluents generated by the production process.
“This stainless steel pipe has a diameter of 160 mm and a length of 1,800 m. It discharges water from the cooling systems, among other effluents”, explains Gilles Lhuillier, a “Boilerwork Section” preparator on the Dampierre site. “Thus, the pipe must be inspected at regular intervals in order to check for any leak into the environment before discharge into the Loire river.”
Therefore, a team of Cetim experts went to the Dampierre site and tested the partially buried pipe using the acoustic emission testing method. Approximately fifty sensors were installed along the pipe and, after testing, no leak was found.
“Acoustic emission testing is a flexible and accurate method which proved to be particularly safe and cost effective, especially compared to the cost of a shutdown in case of leak“, concludes Gilles Lhuillier.
Read the full text of the Reference article on Cetim.fr, “Prestations” (Services) page, “References” space.
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