Thanks to Nick for these

I would love to make those terminations!

I've never worked on a motor that used 4160 (but I do MV splicing fairly regularly) - what are they for?

One could taste the power from here, Demins is emense!

"what are they for?"
The slab you see is actually an 18" thick concrete deck. Underneath is a large concrete tank. The tank receives water from the Microfiltration building that is ahead of it in the system. These pumps pump the water into and 84" pipeline down to the next building in the process, Revers Osmosis.
BTW: You can judge pretty well from the Carpenter in the background but the top of the motors are about ft above the slab. I was told the Millwrights set at least one of the 2250HP motors today. I'll try and get down to that part of the job in the next couple days to get a pic.

It's probably more info than most would want but here is a link to a website about the job. It explains the whole system and has monthly construction updates with pictures.
http://www.gwrsystem.com/

Ahh takes me back to my power station days.

Celtic you should try lining these motors up to the pumps using clock gauges and shimms. For some reason it was always the sparkies job.

What is that red cable strung between the motors? Looks like a temporary setup.

Nick,

I have done one of these GWR sites (Electrical System Design/Engineered, plus ran the job).

The Well Pump Motors were small - 5 and 7½ HP, 460V 3Ø - which were "scattered" all around the site.

There were 10 HP and 25 HP Transfer Pumps at the Equipment Compound, along with a tiny 2 HP Sump Pump.

Treatment of Water removed from the Aquifer was done on the Equipment Compound (H²O² "Hydrogen Peroxide" < 26% solution, being the only "near hazardous" chemical).

Ours was nothing compared to the site you are doing!!!

Looks like the site is down in Fountain Valley at the I405 / Euclid-Ellis crush

Scott35

Now that's a cool job to be on

Scott, or anyone..what happens to the waste they remove from the water?

Does this go to the salt flats, or is this somehow reduced somewhere to it's orginal components?

The red cable is temporarily powering up the space heaters.
Scott, you are correct about the location. No problem for me since I moved down here. Don't even have to hit the freeway!

Dnk,
The biosolids, or sludge, from the sewage treatment plant just down the way from the water replenishment facility is trucked out and composted...230,000 tons of it a year.
Currently, the wastewater is all sent out a pipe 4.5 miles offshore and discharged in about 200' of water. Many believe that it's the source of bacteria that often forces beach closures. The new plant will take a load off of this discharge....until population growth catches up with the whole thing again.

Celtic,
The terminations aren't bad. You just think of it as a splice, and put a terminal lug on it instead of a butt.

We have 4 2500 HP motors here. It is impressive when they start up. (across the line).

Here's a question...where's the peckerhead? (junction box for the motor and line terminations/connections for anyone before they have to ask )

Celtic, I think the terminations for the motor itself are in the large rectangular can with the number on it, near the top of the motor.

Big Ed, impressive in what way? I would imagine the noises both the motor and switchgear make to be interesting and a bit scary.

Yes, the large box is the peckerhead. Inside is bus with the standard NEMA 2 hole pattern so in this case it's just a standard MV termination. We are going to have to turn them 90 degrees because they are getting fed via cable tray that will run along side just to the right of the beam you can see. There are 3 tiers, 4160, 480 and controls. Like I said before the small box you can see is the heater termination box and there is another box on the other side, out of site, where the inlet/outlet temp, bearing temp and vibration RTD's terminate into a terminal strip.
Electure, interesting tid bit of info. The water from this plant will come from OCSD plant 1 next door via a 96" pipe. It has already been treated but is still pretty stinky. The finished product will be split between being pumped into the ground water and pumped all the way up the Kramer basin near the 91/55 junction where it will settle naturally into the ground. They have had the Santa Ana river trail closed for some time installing that line.

Nick,
Are you using shielded cable on this?

HP

This looks like a very inexpensive project.

Peter

Yes, the VFD manufacturer requires 8KV shielded or non shielded cable. We are using shielded per project specifications. It looks like we will go with 3M QT-III terminations. Believe it or not this project is still under the 96 NEC so if it wasn't for the spec non shielded would be an option.

Cable

Reason why I asked, it looks like it might be tough to make the terminations in that small an area. Non- Shielded would be a breeze.

HP

mxslick,
The noise and the voltage dip.

They are the feedwater pumps at a power plant. 2500 psi output. It looks like an old prison movie when they start. All of the lights dim for just a second.

Dnkldorf;


I am unsure what is done with the remaining materials from Extraction on Nick's project, but on the Project I did, the resultant Chemicals were either isolated and reclaimed for later usage, or they may become "Stabilized" by Chemical Treatments, and therefore become "Non-Threatening" Molecules, which would be allowed to be placed back into the extracted water.

The GWR setup I was involved with is different than the one which Nick is doing.

Nick's Project reclaims as much Groundwater possible, then uses it to replenish an Aquifer at some location - in this case, the Aquifer is about 10 Miles North of the Equipment Compound / Wells Location
(FYI: an "Aquifer" is similar to an Oil Pocket - it consists of a "Sponge-Like" layer of Permeable Rock, Sand or Gravel - in which Groundwater is contained.)

The GWR Project I worked on (Designed the Electrical Systems, did the Electrical Engineering, played Project Manager / Foreman) is intended to extract the Groundwater from an Aquifer, which had been contaminated by Accidental (??) Chemical spillage, treat the extracted water, then eject the clean treated water into the local City Storm Drain (after verification of decontamination).

The site was a recently closed and demolished Metals Plant.
The Buildings are all dismantled, and the site is a HUGE empty lot.

Here is an idea of the Extraction Process:

<OL TYPE=1>

[*] Preliminary tests were made on the site at several points across each "Incident Zone",


[*] The Chemical Engineer analyzed the samples to determine what Chemicals are to be dealt with, along with the level of contamination at certain points,


[*] Chem. Engineer submits that data to the Environmental Services Engineer, who plots points for Wells to be drilled,


[*] On this Project, Wells were placed in a "Circular Fashion" around the "Incident Zones", plus one Well set in the center of the "Incident Zones". An additional "Line" of Wells were placed in the flow pattern of the Aquifer, to catch anything that might pass through the initial Well Pumps - each Well contains a 5 HP or 7½ HP VFD type Pump,


[*] The Environmental Engineer submitted their Electrical Equipment data to me, and I designed the Electrical Systems (service, connections to loads, controls, etc.), performed the necessary Electrical Engineering, created the necessary Plansets and Contract Documents, and submitted the necessary items to the City for Plan Check and obtaining Permit,


[*] All Well Pumps are fed / controlled from Equipment on a Centralized Equipment Compound. Along with this, all the Well Pumps send the extracted Groundwater to treatment equipment on the same Equipment Compound,


[*] The Extracted Groundwater gets Pumped into a holding vessel, along with any water that accumulates on the Compound's floor (gets pumped out of a sump),


[*] The accumulated water gets treated with Hydrogen Peroxide and Oxygen, along with some type of catalyst,


[*] The treated water gets pumped into a large holding tank, for verification of "cleanliness",


[*] Samples are drawn from the holding tank, and are analyzed on site,


[*] If the test samples pass, the water held in the holding tank gets pumped out, into a local City Storm Drain,


[*] The Extracted Contaminates are held in various storage tanks, which may be taken off-site over regular intervals, and sold off as usable Chemicals for Industrial processes - otherwise are held in "Haz-Mat" storage facilities, or they are ReDox'ed into safe Molecules, which get sent out with the cleaned water into the Temporary holding tank,


[*] All Equipment and tanks have status indicators, which inform the overall status of the site to the Environmental Management Company, as to indicate service intervals and trouble. This is done via Analog MODEM from the PLC Equipment (at the "Master" Controller).
</OL>

This particular site will have the Extraction Process going on for at least 20 Years!

We had to bring in a "Sort-Of Temporary" Service for this Equipment Compound, via Temporary Power Poles.

The Transformers were on the Street, about 1,200 Feet from the actual Equipment Compound.

The kWh Meter is on the "First" Pole, closest to the Street. From there, the Customer's Side is strung over a distance of at least 1,100 Feet via Temp. Poles.

At the Equipment Compound, there is a fusible Disconnect mounted on a Temp. Pole.
This feeds the first Panelboard in the Equipment Compound.

The Temporary Poles situation was done due to the future plans for the site to be developed into a Commercial Office Building (Tilt-Up).
This is to be done within the next 5 Years.
When this is done, the Equipment Compound will be fed by an Underground Service Lateral.

I will see if I can locate the Pictures of this site.

Scott35

edited to fix a few spelling goofs, and to address "Dnk's" question in a little detail.

S.E.T.

[This message has been edited by Scott35 (edited 06-07-2006).]

>>>in a little detail<<<< LOL

I'd love to see one of your fully detailed posts

Tx,
Dnk..

Dnk:


Ohhh, be careful of what you ask!

As said before, I can make an explanation of "How To Tie Your Shoe Laces" into an hour-long string of completely non understandable Technical Jargon!
(combine that with run-on sentences, grammar faux paus, spelling errors and story plot-holes!)

Comes from reading old Microsoft, IBM and EE Tech Manuals "For Fun"

Scott35

p.s. Thanks for the compliment!

Yep those are identical to what we have at the NP for ERCW. Essential raw cooling water.

Nice work Nick. Is that PVC coated rigid?

This looks like one of those jobs where they spared no expense. The workmanship is outstanding.

Nick, nice project and nice work.

Roger

"Is that PVC coated rigid?"
Yes indeed. All the strut, rod, hardware and j-boxes are 316 stainless steel as well. The tray is hot dipped galvanized steel. I guess a few pennies had to be saved some where.
Just a little trivia- The submittal on the large pumps rates them at 29,000 gallons of water per minute. (each):o

Now that really is something flash, Nick!.
Good to actually see LB's in pictures, being used for thier proper purpose.
Great pics.

Nick,

Great work!! Thanks for the follow-up pics.

I drive by that area going to UC Irvine, would love to see it in person if possible.

That really is some fine workmanship. I really like the cable tray installation. You should be proud of your accomplishment.