The problem: A chemical plant had a large potable water tank that required internal inspection every 5 years. However, the potable water tank supply to the site could not be interrupted, even for inspection. So, every 5 years, the site had to pipe up a large sterilized bladder to the tank, fill the bladder with potable water, drain the tank, scaffold the tank, perform the inspection, fill the tank back up and then dismantle the bladder. Costly. Time-consuming. Painful.
Our solution: Drop a submersible camera into the tank from the top manhole and complete the inspection in one day while the tank remained in service. Simple. Inexpensive. Quick. Painless.