Damage Found At Fukushima Daiichi After Quake, Tsunami

daiichi_tsunamiSmall pieces of information are coming out of TEPCO. So far no reporting of the status of the storage tanks up on the hill has been given. This has been a major concern of ours as the aging bolt together tanks are still partially in use. Those are the most vulnerable to damage in the event of a quake and those still in use contain contaminated water. There has also been no report of the status of the unit 1-2 vent tower that has existing damage.

We do know so far for damage or problems:

  • Contaminated water transfer from the reactor building basements was stopped after the quake. It was resumed at 3:19pm
  • Reverse osmosis desalination system was stopped at 6:17 am, was restarted at 3:44 pm
  • Cesium adsorption systems stopped at 6:23 am, was restarted at 4:47 pm
  • Other water treatment systems stopped at 6:12 am and resumed at 4:20 pm
  • Field patrols resumed at 4:06 pm
  • Both the south and north silt fences on the port were damaged. These are used to try to keep small radioactive debris from leaving the port.
  • A puddle was found near the common spent fuel pool that was 2 meters by 3 meters, it was assumed to have been caused by sloshing of the pool during the quake
  • Maximum acceleration at unit 6 was 45.5 GAL vertical, 54.2 GAL horizontal
  • Sea level rise of 1 meter recorded at the plant

TEPCO documents in the links below

https://www.dropbox.com/s/31vgkqahc5gescp/TEPCO_post_quake_damage_11_22_2016.pdf?dl=0

https://www.dropbox.com/s/ky7ouix8j38bqm9/handouts_161122_04-j.pdf?dl=0

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