Hi,
This is a little out of My area, but I have the question what are the difference between an earth continuity relay vs an earth leakage relay? At the end both of them look for an earth fault ? And in what application one is better than the other ?
Thanks in advance
Good day everyone,
Yesterday I was a issue with one pump operated by motor, where it wasnt deliver enougth flow rate and it was running with low current. at the end I discovered that the problem was a dead head operation
So my question is, a symptom of a pump working in dead head is low...
What is the static head in a system were discharge vessel is not at the highest point in the circuit?
Highest point in the circuit is at 11 m from pump discharge.
Discharge vessel is at 0 m from pump discharge...
Hello all,
I want to know if it is common to weld support pads on the tank shell , if the welding lines are over the welding lines of the tank.
if it is not possible what is the reason?
see attached picture...
Hello all,
I am working in the erection of the 4 courses of a API tank.
In the second course I found that one shell plate is shorter as per design drawings.
this generates a bigger gap for the welding ( 2mm in the bottom of the plate and 12mm in the top)
see attached sketch.
What could be a...
Hi all,
I am a mechanical engineer trying to improve in my career.
I want to know what kind of engineering master you could recommend me if I want to specialize in the EPIC projects.
thanks in advance
Hello all,
I am installing hydrants of dry barrel, but these was bad specified about the barrell length. So to suit we are thinking in modify the barrel (cut to be shorter) and valve stem.
From a construction point of view is very easy the modification. But now I am thinking that maybe there is...
as the spec sheet by the vendor is in french I could not notice about this information.
After a translation the material spec is XC48 (French spec), this is SAE 1045(American spec) and to achieve the grade, the bolts require to be tempered and quenched.
Thanks all by your answers.
Hi all,
I want to sent to fabricate J anchorage bars for a tower crane foundation.
As per the vendor of the crane the anchorage bars need to be grade 8.8, so my question is: to specify the material for the manufacture, it is enough information for the manufacturer, only specifing him " Carbon...
Hi all,
Currently I have a Gantry (Bridge) already installed with a permissible deflections by the settlement of the structure . Above this structure I will install a shuttle conveyor, Therefore the rail of this machine will present unacceptable deflections that I will require to correct, in...
Hi all.
I am aware about the rule, that if I have a diesel pump, I will need to install sprinklers above the storage fuel area as per NFPA 20. This is a common practice.
But in the particular project that I am working ( A copper process plant in a copper mine) we have the fire pumps at outdoor...
Hi all,
Normally We pre manufactured all our rubber lined spools with a supplier, but now is necessary the modification of one in field. Here we have all the tools and good personal to work in that.
In this special case, I am requiring to trim a 1 meter nipple from one spool and this same...
Hi all,
For the design of a temporary camp, small rooms, it has been decided to power each room with a single circuit - 2 pole breaker for an 1100VA Air conditioner split (240V, 2 hot wires 120V each) and from there, one hot 120V phase will continue to power 3 outlets for small appliances and 2...
HEllo all,
I want to know if you recommend to use some kind of heat treatment after the process of bending a pipe. For the bending I am using heat to put more ductile the material.
The material is Carbon Steel (api 5l).
thanks in advance.
