I need to purchase submersible pump at a platform where the depth of water is 4 mtr there is no vessel or tanks just i need to install the pump in this depth some of vendors have advised that NPSH req of their offered pump is 20 feet and it would be greater than depth of water while some of them ha

From Wired Top Stories:

Using images of a star cluster taken ten years apart, astronomers detected young stars moving in somewhat surprising ways. The Hubble Space Telescope imaged the core cluster of the extremely dense star-forming region NGC 3603 in 1997 and again in 2007 (ab

From NYT > Science:

Just in case anyone had doubts about the reality of the extraordinary sinkhole that formed in a crowded district of Guatemala City — following a similar incident in the city in 2007 — this Associated Press video report closes the case.

Wat

I need a referal to companies that do undertake the rehabilitation and Upgrade of 33/132KV and 132/330KV Transmission Substations. I have some substations rehabilitation and upgrade work to perform and I would need the help of these companies. Work station is Nigeria.

Thank you.

Patrick Ob

...Who's fooling who: here's the FIRE (Deepwater Horizon style).

Click image at right to stream a CBC Radio report I heard this past weekend emphasizing the use of protective respirators in the cleanup. -->

Wish I could disconnect what's currently going on in the Gulf of Mexico from thi

Dear All,

Please I have a little challenge here.

I have Three (3) different rated generators (11oKVA, 200KVA and 500KVA) Gen sets to be connected in series using ABB EK Series block contractors. The Generators will be selected using a 3-way Rotary switch.

Please can anyone

A Industrial Plants Ambient Temperature is 50 Deg C

A motor with Insulation Class F with Temperature Class Limited to Class B is to be procured

Is it correct to procure the same

What are the most commonly used line monitoring schemes?

If the upstream substation 66/11 KV has 25KA for 3 second withstand rating at 11 KV side, then is it required the down stream substation 11/.4KV also required 25KA for 3 seconds??

I am in the Northeast U.S., currently looking for a new furnace. I have noticed that some of the furnaces I've looked at use an aluminized steel for the heat exchanger. Is this as good or better material than stainless? My concern is that the aluminized coating probably does not extend to mate

Please tell me what references I need to calibrate e.g.

Torque wrench, pressure gauge, cable tensiometer, force gauge , micrometer, vernier, etc.

Thank you for helping

Best regards

Can anyone explain the commissioning procedures for the MCC (Motor Control Centre) and PMCC (Power Motor control centre) of the 600MW thermal power plant?

Can anyone explain me the procedures for Back Charging the Switchyard in the power plant?

I want the procedure format for back charging of switchyard (it is 400kV switchyard with two line feeder), 600MW power plant.

Dear Friends,

Can you please explain, What is the use of Gauge Hatch in a storage tank?

Regards,

Raghuraman

By this I mean the generator control wiring, how does it work?

Dear Friends,

Can you explain to me the calculations for finding the span measurement of the spur gear at hobbing stage. I have the span measurement value at finish stage. The following are the data of the finished gear I am having:

No. of teeth 31,

Pressure angle 20 deg

Dear sirs,

What is the difference between voltage and EMF?

How can allowable loads on interstage nozzle be calculated for centrifugal compressor?

Dear All

I am in the process of stress analysis of fourth stage suction piping. I want to compare the loads, as the results of piping stress analysis, to the allowable loads of the nozzle.

How can I calculate the allowable loads on interstage nozzle?

Please Advise.

I have 400 ft^2 of new, 6-sack, concrete sidewalk I need etched, or sandblasted. I want to make an attempt to make this new stuff match the existing sidewalk. The existing concrete has a sandy surface texture for wet traction; the owner said it was given an "acid wash" as a final step when it was