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[Mohamed94]

Hi peeps,
I want to ask some questions about chemical storage:
1) In the MSDS, it mentions the vapor pressure at 20 degree C. Is it the RVP or TVP ?

2) should I determine the TVP at the storage temperature or which temperature?

3) how to determine if the chemical should be stored in fixed or floating roof ?

4) how to determine the material selection of the tank ?

I have done some research and found that TVP less than 1.5 psia (Fixed Roof), TVP 1.5 to 11.5 psia ( Floating Roof), and TVP above 11.5 psia (Pressurized Tank). As you can see the API does not specify TVP at which temperature.