Water Dam height Calculation

can you be a bit more specific? water dam height?

A google search for .....

"water dam height" crude oil

Only produces your question to CR4 so I'd guess you're not using standard terminology. It's difficult for us to guess what you might be talking about.

I know nothing about this field (so, I was looking to find out what you were talking about), but, others on CR4 are very knowledgeable. Try re-posting with a fuller description of the problem.

Are you referring to the safety dam for containment in case of failure?

this is just a wild a## guess, need more info.

Brad

Randall is right.

You should always try to use right terms; otherwise even specialists wouldn't understand what you're talking about.

My guess is that you mean 'Design of a Secondary Containment for a Storage Tank'

'A Dam' you're referring to is called a 'Dike' or a 'Berm'.

This is not a Mechanical and not Structural but Civil specialty. A Civil engineer is normally assigned to calculate the volume required to contain the maximal potential spill and size the Secondary Containment (including the dike height) so that it would fit the layout of the plant. Another important aspect of the secondary containment design is the selection of the suitable geo-synthetic (or impermeable clay) liner system. For that the engineer should consult with liner manufacturers became familiar with the applicable requirements of local authorities (mostly environmental issues) and study geotechnical conditions of the site.

The easiest way would be to hire a professional civil engineer. If for whatever reason you cannot do it, I just wish you good luck.

If you tell me in what country or what US state your plant should be build, I might be able to find some reference materials for you.

Len Bogdanov, Structural Engineer, Calgary, Canada

Thanks,

We are not talking about outside tank containment which usually calling a dike. I am asking about a dam intside crude oil tank which separate two phases wet crude and water. After water separation, the crude oil goes to the upper phase and deverse to the dam space. The outlet wet crude oil is taken from intside dam and outlet water is taken from bottom of the tank.

Ben

Thank you, we now have an idea of how to answer you. My tribologist is off to a funeral. I'll pick his brain by Monday.

I know how I would design it, not how it is done.

Two valves far as vertical apart that is practical, with a float centered between them that is a specific gravity between the two fluids to actuate the valve that the float moves away from. The valves would have to have flow rates both in proportion to the mix to be separated and of volume each to handle a percentage of change to be determined by possible variation in the mix to be separated.

Second way: a dam where the crude goes over the top and a float on the face near the bottom so when the water builds up past the float it opens a valve to lower the water.

either the distance of height is determined by the area of separation of the mixed fluids plus fudge factor.

2cents from

Brad

I am not used to seeing a dam inside a crude tank. Normally there is a "centre sump", is this to what you are referring? If so there is no specific "height calculation".

By the way I believe the more common term in the industry for the "dam outside a storage tank" is a bunded area or bund walls. (Not sure in US English.)

??????

Are you referring to water(moisture) in crude/ furnace oil that gathers on top of the oil in a storage tank which needs to be taken out otherwise it gives pumping problem?

If left it can gather up to 12" to 18" in height.

Never heard "dam" .

By the way I believe the more common term in the industry for the "dam outside a storage tank" is a bunded area or bund walls.

or are you talking about a containment tank (for environmental safety) made outside the storage tank to contain the contents of the strorage tank (if rapured) such that the entire oil stays within the containment walls or dam.

"bund" is a hindi & urdu word for dam.

My tribologist must not have liked the question, his answer was "that's like asking how long is a piece of string" (He is pre software) What a grump.

Hopefully some one more up to date can help.

Sorry

Brad