This week, the scaffolding was raised and crews began installing a plastic containment system. By this time next week, the existing mural will be covered up and removed from the tank. The interior coating is close to being done, and the team will be moving on to the exterior coating. The view this week form the top of the tank was beautiful!
May 3, 2019
This week, the painting subcontractor has continued to remove the coating, or paint, from the interior of the tank, while another subcontractor installs staging around the perimeter of the tank. Next week, the crew will hang plastic sheeting around the staging to contain the blast material and paint when they proceed with work on the exterior of the tank. This will be the last chance to view the existing mural on the tank.
April 19, 2019
The next phase of the project started this week: painting the interior of the tank. The contractor is currently removing all paint from the interior of the tank, right down to bare steel. In order to keep the steel from rusting until it is painted next week, the atmosphere in the tank needs to stay dry. Therefore, dehumidification equipment will need to run throughout the day and night. During the day, the sandblasting activities are noticeably loud outside of the tank, and they are even louder inside!
April 12, 2019
This has been a busy week! The steel welders have been working hard to get all the components welded to the tank before interior painting starts next week, while another crew worked on replacing the old underground piping. In addition, the painting contractor has been delivering a lot of big equipment for the interior painting work: a large generator, which has been sized to help minimize noise, a large dust collection system, and other blasting equipment.
While they paint the interior of the tank beginning next week, some of the generators and dehumidifying equipment may need to run through the night. The contractor will make every effort to minimize noise levels. Each day, we will assess the impacts of the equipment, and if changes are needed, we will look into alternative solutions. Proper environmental controls and protection of the bare steel are critical towards protecting the tank long into the future, so please be patient with us as we move forward into this phase of the project.
April 8, 2019
We have finished the installation of steel stiffeners on the tank wall. These stiffeners will allow the tank to be more resistant to swaying during an earthquakes and prevent buckling of the steel. Now we will begin welding the steel plate floor together and installing the new manways.
March 22, 2019
On Thursday, crews installed a concrete mat, or pad inside of the tank. The weight of the concrete is designed to further stabilize the tank in the event of an earthquake. The concrete mat is four feet deep and 62 feet in diameter. Over the course of seven hours, 41 concrete trucks delivered 452 cubic yards of concrete. The weight of all this concrete (not including the steel reinforcement bar) is 1,831,000 pounds or 915 tons!
March 15, 2019
Construction activities have started around the large 2-million-gallon water storage tank in our parking lot for the seismic retrofit upgrades! This week, the crews opened up an access point to get inside the empty tank and begin the process for pouring the concrete base next week. Steel reinforcing bar (or rebar for short) is being installed to strengthen the new concrete base that will be four feet deep! If you plan to visit our offices next week, please take extra care as you enter and exit the property and follow all posted signage.