APR: your source for nuclear news and analysis since April 16, 2010

Wednesday, September 14, 2011

Fukushima Daiichi: Reactor buildings

Two types of brief updates on the reactor buildings at Fukushima Daiichi.

First, the steel framework has been completed for the "first type" or fabric panelled enclosure at No. 1 reactor building. In fact, as of this moment the panels are already going on. See below a shot, courtesy TEPCO, of the completed framework. Click to enlarge.

Second, dust sampling is being performed over the reactor buildings to determine just what kinds of particles are being sent into the atmosphere. First, a shot of the sampling device with its fabric hood; note the workmen's feet visible below the hood for a sense of scale.

Below we see the device being used on September 11th above No. 1 reactor building:

Below we see the device being used on September 12th above No. 3 reactor building:

Be sure to see today's earlier update concerning water injection to the three reactors at Fukushima Daiichi, and the accompanying video at the APR YouTube Channel.

4:22 PM Eastern Wednesday September 14, 2011


  1. Good info source. Thanks!

    James Greenidge

  2. Is the steel framework really complete? Isn't there going to be a roof over the structure? The following YouTube video shows much more steel framing on the outside.

    Just curious, but in the second image, where is the top half of the closest person? Is he bending over or something?

  3. @t. TEPCO's press release information indicates a completion date of 9/9 for the framework officially with the commencement of installation of the fabric panels having begun on 9/10. Remember that this is the first of two enclosure structures that will be built around the reactor building; the second will be much heavier, and thicker and will be the enclosure that contains the plant during defueling and dismantling.