Week 43, Part 1- UV units & Belt Filter Press room

Heads up to those following this Blog- you're about to get several e-mails in a short span! I've had some blog posts waiting for final review & publishing but the Electrical schedule and some Pre-Start-Up details have taken all my spare time for the last few weeks.

For time reference- Week 43 was the last full week in March so these events are just over a month old. We will catch up quickly!

The UV disinfection units were loaded in a couple weeks ago. Each unit has 10 racks of UV light tubes. Each rack of lights has it's own ballast. There are 3 UV units therefore 30 nice, stainless steel ballast units to be installed. Here a CNI employee has been patiently hooking these up at the west end of each UV unit-





Over at the Operations Building the "Bagging Area", an open work bay next to the Headworks room, needs a vented metal ceiling.



And here it is several hours later-



Meanwhile there is still work to do in the Lift Stations. This is a shot down into the Influent Lift Station. You can see the white hardhat of a CNI crew member-



In the Belt Filter Press room, things are happenin'. John Gabbard is helping get the main piece of machinery put into place- the Belt Press itself-



Against the east wall of the room we see the Sludge Pump. This will draw sludge all the way from the Treatment Basin, a few hundred feet away-



And now the Belt Press is in it's final position-



On the west wall is a 5 hp air compressor-



And within a day or two All Wall finished installing the Metal Liner Panel in this room-

Week 42, Part 2- Painting, roof & piping

Back at Mechanical, most of the interior paint work is done so it's time to hit the doors-







Here is the Belt Filter Press room after the high-performance interior painting is finished. In this room and the UV room (next picture), the walls currently covered with foil-lined insulation panels will have metal liner panels installed soon-



And the UV room after the epoxy paint has been applied-



The roofers are wrapping up details on ridge caps and soffits-



Here are "during" and "after" shots of the Blower units being bolted up-





And finally a site view taken early in the week before the chem tanks were in place-

Week 42, Part 1- Containment Pad & Electrical

Last week we poured the slab for the Secondary Containment Pad. We call it the "Chem Pad" for short since the Chemical Storage tanks will sit on this concrete pad with a short containment wall. Liquid ferric sulfate is needed for phosphorous removal in our system. It will be stored in two large tanks. On the same pad, inside the wall, our chemical feed pump & controller will sit in a hot box. But we'll be looking at that in a couple weeks.

Here is the fresh slab and the forms for the short containment wall being built-





Most of the early blog entries were about big segments of work- building the Treatment and Phosphorous Removal structures, the Operations building and finally the Mechanical building. Now, we're mainly down to details. But I will try to guide the blog through the details at a steady pace while still trying to find interesting pictures or observations on the work at hand.

We're going to see a lot of the Challenger Electric crew, or their work, in the final two months of the job. Here is a view I've shown before- one of the main duct banks going from the MCC in Mechanical up to the Operations building. This carries power, control and signal to the systems installed up there-



This week Challenger began setting all the sonotubes for light bases around the main site. Here Todd has placed the sonotube over the conduit stub-ups and is making sure it will sit straight after the concrete is poured in-



Another soon-to-be light base near the Chem tanks. Oh, wait- we didn't see how the Chem tanks got there!-



So, here's the first Chemical Storage Tank being hoisted into place-



You can see there is room for two on the pad-



And at the left edge of this wide view of the Phosphorous Removal structure & roof, you can see the 2nd chemical tank being lifted into place-



More details in the next entry...