Iwamoto san,
No.
On 29th June 2015 we had pump trouble caused by a lot of plastic film which were from inside of 20m3 RO water tank.
We asked TNP to fix it.
TNP promised to make manhole on the tank and take out the film from inside of the tank.
It took about one week or more.
I recognized TNP’s operation continued as of the end of June 2015.