I will consider the allowable stress fromASME B31.1/31.3 if the pipe thickness is calculated as per ASME .In case i am calculating as per IBR then what is the allowable stress vale and where will i get those values?.Is there any equation for calculating allowable stress?

Hi

Could anybody can give an idea to choose fault current for high voltage substation grounding design. I am doing grounding design of 138/25 kv substation. the transformer is delta/y configuration. 25 kv side is grounded with NGR. I am given the ultimate fault current for 138 kv side 22KA

I want to know how to determine lead sulphate from active mass in lead acid battery by tharmogravimatric analyzer (TGA)? Here acid = sulphuric acid

i have a 200KVA gen, a pf of 0.8 to have a true rated power out put of 160W max. if i load the generator to get a true power output of 80W, will i be correct by saying that the load pf is 80/200 = 0.4 and how does this affect the supply and the load?

Could you please give me your views on the cancellation of daily steam boiler tests.

I am working in a hospital running 2 steam boilers that are unmanned. The steam that they produce is used for the sterilisers. It is a legal requirement that they should be tested every day. and the types of te

We experience some problems with a siemens 2000 Kw master drive:F025

We found a cable with the red phase down to earth. The cable was repaired but still the drive trips on F025

M -T - M arrangement with tie closed in normal operation. What are the advantages and disadvantages? How will the protection scheme look like?

If you have used main tie main arrengement with tie breaker close in normal operation

We are welding a thin wall (0.048") bushing to 1/8" thick material, both are 304 Stainless Steel using TIG with the appropriate rod. The weld is thee pretty good sized tacks. Would a post weld heating be recommended to prevent cracking? If so, at what temperature and how long?

Thanks,

I was trying to change generator head but stuck at old rotor to engine disassembly. Any tricks or ideas. Maybe i m not doing it right.

When can I use a hard ball to size a hole instead of using a reamer? I know balls are forced through holes to size them. Is it the hardness of the materials that govern or the degree of precision? Obviously the piece containing the hole has to be softer than either the ball or the reamer.

can i used self generated energy in any electrical device like dynamo and motor

how can i design a gear pump?

what are the advantages we get after ac drive tuning with motor?

Our Boilers are having P.A Fans which will carry pulverised coal from the mill to the furnace. Our P.A fans take air from outside the sec air fan O/L and RAPH. Presure before P.A fan = 70--80 mmwc, P.A Fan O/L pressure = 700mmwc.

We are facing problems of severe dust leakage from PA ducts, ex

Bought a house 8 months ago that was built in 2008; built on a slope. The house is apx. 5,000 sq. ft.. Noticed wet spot (6X6apx) in utility room near corner in unfinished basement; thought it was condensation. I didn't spend much time in the bottom level until now since my 89 year old grandmothe

if we have water in vacuum tank and it evaporate at vaper pressure of it according to vacuum pressure.

Is the temperature of generated vapor equal that of water in tank?

thank to all who can help

Hi all. We are using a pipe for steam conveying. Then how to calculate the diameter and thickness of pipe.

can a non armoured low voltage , flexible cable be buried to supply AC low voltage laod ? what shallbe the depth?

CR4 crew

I have problem with land cruiser diesel engine 6 cylinders , in morning time i run the car normally no problem after few hours i stop the i try again to run it noway until to push the car to start again.

can you tell me what is the problem .

Note i repaire the fue