Top > Releases ･ Announcements > Fukushima Daiichi NPS Prompt Report > 2013 > Water leakage found at the desalination system (reverse osmosis membrane) in Fukushima Daiichi Nuclear Power Station (Follow-up Information No.3)
This is a follow-up report on the investigation statuses of the water leakage found at the desalination system 3 (reverse osmosis membrane RO-3).
As a result of the investigation, we found that the leakage occurred through a cap section in the lower part of a flow meter at the ultra filter raw water pump outlet at the desalination system 3.
Regarding this flow meter, the cap section in the lower part of the flow meter was removed when the ultra filter was cleaned on June 20. We determined that the leakage occurred because the cap was tightened too much after the cleaning.
We are planning to restart operation of the desalination system 3 after restoring the normal state by replacing this flow meter with a backup flow meter.
Though the amount of leaked water within the temporary warehouse was initially estimated to be "approx. 360 liters", it was determined to be "approx. 250 liters" as a result of a detailed investigation performed afterwards.
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