Tepco has confirmed that steam is rising from Fukushima’s melted-down Reactor 3, but insists there is ‘no abnormality’.
The steam emanating from the top of Unit 3 Reactor Building indicates “no abnormality”, according to plant owner Tokyo Electric Power Co. (TEPCO).
However “steam continues to be confirmed at the top of unit 3 reactor building intermittently since summer when debris removal was conducted on the top floor”. The likely cause of the steam is “accumulated rainwater” and “no safety concerns indicated”.
Steam has been visible since 18th July 2013, and has mostly been observed “on days with comparatively low temperature and high humidity and, upon almost all occasions, when rain had fallen before.”
The steam has been observed around the edge of the shield plug of the Primary Containment Vessel (PCV), which is the upper structure of the reactor.
Continue reading at TEPCO says no abnormality at Fukushima