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different of supported and floating tank

different of supported and floating tank

different of supported and floating tank

(OP)
Dear Friends,
Now Im designing storage tank with Olifin as fluid. Design pressure is Full of water, design temperature is ambient. ID 5.75m and height=7.5m, the code reference is API 650. In API 650 there are supported cone roof type and floating cone roof type, which one is suitable for above parameter design? and what diffenrences of those type?
Thanks alot for your suggestion before.
SPW

RE: different of supported and floating tank

The partial vapor pressure of the stored liquid at the storage temperature and the local environmental regulations will help you decide if you need a floating roof.  API 650 does not care.  Please look up "floating roof tank" on the internet to see what it looks like.

RE: different of supported and floating tank

(OP)
IFRs,

Many thanks. I have found common practise that floating roof is more safely of burning, caused small space below the roof for fuel vapour (Floating roof elevation based on level liquid). The Floating type is suitable for pressure 1.5 to 11 psi. The pressure of liquid is not exceed the deaed load of roof.(Please correct me!!). But these not found in any code. So my client need justification by standard code. It's my problem.....
Please if any idea ....Thanks before

RE: different of supported and floating tank

If this were in the USA, the EPA (Environmental Protection Agency) writes the rules that apply here.  Your equivalent government institution is where you need to look.

RE: different of supported and floating tank

A thought....

The diameter you have is probably on the small side for a floating roof. Not impossible.... but probably not as common as floating roofs on larger tanks.

We use floating roofs on oil and fuel type storage tanks mainly.

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