Hello,
When designing a pump with a specific HMT (123 m), and we come across a client update (lowering the pump level ΔL=-1.6m),
Suction tie-in point ( with Residual pressure Pr = 15 m minimum) and discharge point elevation are still intact.
Do we need to update the pump spécification : HMT...
Hello everyone
When desinging a water treatment plant, what are the main process methods used.
I should mention that the plant is set to produce a regular flow of 1 cubic meter per second (Q = 1 m3/s) and it could go up to 1.25 m3/s
Coagulation and flocculation are going to be used in the...
Hello,
I am currently working on a water pumping station with an overall capacity of 2200 l/s (nearly 8000 m3/h), the latter is delivering water to a storage tank. The scope of the project includs installing surge tanks to protect the system from water hammer effects. According to the client...
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I am currently working on fire fighting project for an oil storage facility, I am designing the piping layout including all its components. Such systems are designed according to NFPA Standards, which state the use of emergency Diesel pumps, these pumps are known to generate a great deal...
Hello,
When designing your piping layout, one would certainly have to use a fair amount of valves of various types (check valves, gate valves, butterfly valves...) to choose one type over the other demand some thinkig along with good engineering skills and operating conditions, My question is...
Hello,
I am currently working on a bitumen storage facility in Algeria, North Africa, the client has specified that both inlet and outlet lines of the bitumen storage tanks must be "Butterfly", but did not give any specification for the rest of the piping work (such as the line between pumps...
Hello everyone,
I am elborating a datasheet for a control valve to be used in fire fighting project. While researching, I came across the term "fail mode" which means that I should choose whether the valve is going to be either open or closed in case of power failure (according to process)...
Hello,
In a fire fighting project that I, and my coworkers are designing, we seem to have a bit of probleme at the discharge line of a water pump (Q= 1115 m3/h, P= 15 bars). As matter of fact, we had an elbow (LR) at the discharge nozzle, but when we rechecked on site restrains, we had to...
Hello to all,
I am new in valve ingineering, I have just been assigned in y new job to check whether a supplier offer is faithful to the client specifications and standards approuved on by both the contractor (the compnay I am working for) and the client (API 600, API 602...) I started to read...
Hello to all
I am new to Fluid Mechanics, I a currently trying to divide a flow into two pipes with diffrent pressure drop each, The problem I am facing is that the flow must be equally divided, so as a solution I am thinking about using an orifice plate, yet these "instrument" are generally...
Hello to all
I am designing a fire fighting system for hydrocarbons storage facility, in the process of counsulting for foam chambers, I came across a "strange" type of mounting for the latter equipement. The fire fighting equipment supplier proposed for the foam chamber to be mounted directly...
Dear fellow engineers,
I am working on a new bitument storage tank (net capacity of 400 cubic meter), a heating coil system should be implemented on the tank in order to maintain the bitument in a liquid form. The client asked for the tank to be insulated for energy concervation resons which...
Hello
this is my first time repairing a fire water open top storage tank designed according to API 650, date of fabrication is 1987, this tank suffers from corrosion in some of the annular bottom plates (according to the inspection report, 02 annular plates are set to be changed). in order to...
Hello
I am designing a fire fighting system for a storage tank according to the NFPA standard (NFPA 11 to be precise)
my question: is the expansion ratio for low expansion foam included in the discharge rate in the NFPA 11?
if it is included, what is the ratio
thank you in advance
Hello
I'm designing a fire fighting system for a storage tank (150 m3 / gasoil), feeding a gasoil dispensing unit
NFPA 11 indicates rates and discharge times for cooling water and foam application.
cooling water : 60 minutes
foam application for extinghshing tank on fire : 20 minutes
foam...
Hello
I am designing a gasoil under grounde storage tank, I need to design adequat lifting lugs, I am mainly concerned with the tank behavior when lifted (tank weight) and ofcourse the behavior of lifting lugs,
Is there a code that could help in this calculation
NB: tank is empty when...
Hello,
i am asking this questions for reference only:
when designing a compression ring, these factors must be calculated: Q (total circomferential force) and Ac (the net area to resist the compression fore):
QUESTION:
-in the case of finding Ac much bigger for than the participating area...
hello,
API 620 uses computed values for meridonal and latidunal unit forces T1 an T2 in order to determine shelle thickness,
the formula used for the calculation contains many factors such as W and F,
questions:
-segnificance of W
-segnificance of F,
any insights on the subject could...
hello,
while calculating the thickness of annular bottom plates, i needed to determine the stress in first shell course which can be calculated using the formula in table 5.1a (5.1b).
the formula in table 5.1a (5.1b) states two thicknesses in both product and hydrostatic test stress...
hello
i am designing a vertical storage tank per API 620, i find this standart quit difficult to work with, specially when designing the shell and the roof, i could use a sample of the calculation, if possible, or any advice,
thank you in advance
