Japan Lawmaker: Coolant system at No. 4 fuel pool may take 3 days to fix — Temperature within a few degrees of safety limit by then

Published: June 6th, 2012 at 11:43 am ET
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June 6, 2012 tweets from Kuniko Tanioka, a member of the House of Councillors, translated by Fukushima Diary:

Tweet (Later removed by Tanioka)

They checked the back up circulation (B) just in case, then they found the weakness of insulation between the motor and cable as well. They could see the metal part through the insulation part. For the risk of short circuit, they stopped (B) to fix as well. They estimate 3 days to fix.

Tweet at 2:46 AM – 6 Jun 12

The coolant system of reactor 4 is stopped at this moment. The temperature of water is 35ºC. They assume it increases by 0.3ºC hourly. It will be about 57ºC in 3 days. The safety regulation is 65ºC. NISA explains, it’s simple work, it won’t take longer than 3 days.

Tweet at 2:51 AM – 6 Jun 12

NISA explained the reason of these troubles is because the coolant system is improvised preparation. They plan to replace them with better preparation. For the question that reactor 1 ~3 have the same risk. they did not deny the possibility. This is something to concern. I will keep my eyes on it.

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Published: June 6th, 2012 at 11:43 am ET
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Related Posts

  1. WSJ: Temperature rising at No. 4 fuel pool — Safety limit to be exceeded Tuesday morning? June 30, 2012
  2. Kyodo: No. 4 Spent Fuel Pool’s cooling system stopped after alarm sounds — Tepco: “Leakage of water with radioactive materials has not been confirmed” June 30, 2012
  3. Temperature spikes in No. 4 fuel pool after pump burns — Backup also breaks June 6, 2012
  4. No. 4 fuel pool temperature began spiking June 2 — No daily ‘Plant Status’ reports from Tepco since June 6, 2012
  5. Tepco Press Conference: Temperature rises at No. 4 Spent Fuel Pool, now around 50°C April 13, 2012

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