The southward transborder extension of the Trench into Montana is the primary containment for Lake Koocanusa, a Kootenay River reservoir created by the Libby Dam near Libby, Montana.
12.
Their primary containment vessels had to be flooded with seawater containing boric acid, which will preclude any resumption of operation and was not anticipated in the DBA scenario.
13.
On 19 January 2012, the interior of the primary containment vessel of reactor 2 was inspected by TEPCO for the first time after the accident, with an industrial endoscope.
14.
In the Fukushima I reactors the primary containment consists of " drywell " and " wetwell " concrete structures below the top level, immediately surrounding the reactor pressure vessel.
15.
At 09 : 25 JST on 13 March, operators began injecting water containing boric acid into the primary containment vessel ( PCV ) via the pump of a fire truck.
16.
By design, isolation condensers would have removed the heat from the reactor transferring it out of the primary containment and into the atmosphere, but with limited and non-existent operation, core and containment cooling was not successful.
17.
Though it addressed only accidental crashes, it included a chart that identified the speeds at which a jetliner would begin to transfer its force into the primary containment wall and interior structure of a nuclear reactor.
18.
According to the Nuclear Energy Institute, " Coincident long-term loss of both on-site and off-site power for an extended period of time is a beyond-design-basis event for the primary containment on any operating nuclear power plant ".
19.
On 27 March, TEPCO reported stagnant water in the basement of unit 2 ( inside the reactor / turbine building complex, but outside the primary containment ) was measured at 1000 mSv / h or more, which prompted evacuation.
20.
TEPCO reports that a new computer simulation of the meltdown shows nuclear fuel rod material melting through the pressure vessel and deep inside the concrete of the primary containment vessel, within a foot of breaching it fully in Reactor No . 1.
