Asahi Shimbun, Dec. 7, 2013: Record outdoor radiation level detected at Fukushima plant — [Tepco] said Dec. 6 it detected the highest estimated radiation level for an outdoor location at the crippled Fukushima No. 1 nuclear plant. The reading of 25 sieverts per hour was taken on steel piping near an exhaust stack for the No. 1 and No. 2 reactors, TEPCO said. […] A TEPCO official said radioactive materials derived from melted fuel likely entered the piping during venting soon after the accident […]
NHK Transcript, Dec. 6, 2013: Engineers at Japan’s crippled nuclear plant have hit another snag. They’ve discovered radiation outside a building on the Fukushima Daiichi site, and say it’s potentially lethal.
NHK WORLD, Dec. 6, 2013: Highest radiation levels measured outside reactor — Tokyo Electric Power Company says radiation levels are extremely high in an area near a ventilation pipe at the crippled Fukushima Daiichi nuclear power plant. TEPCO found radiation of 25 sieverts an hour on a duct […] The estimated radiation level is the highest ever detected outside reactor buildings. People exposed to this level of radiation would die within 20 minutes. […]