|


#1
Posted 24 October 2019 - 05:29 PM
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.
#2
Posted 24 October 2019 - 07:23 PM
Some answers:
Edited by Pilesar, 24 October 2019 - 07:27 PM.
#3
Posted 25 October 2019 - 03:18 AM
#4
Posted 25 October 2019 - 06:04 AM
For RVP between zero and 5 psi, the TVP and RVP should be very close to your interpolated vapor pressure results (within about 1 psi.) Real measurements are more accurate than literature data for any particular fluid. The lightest 5% in the composition greatly affect the vapor pressure.The RVP and TVP are lab results found after following explicit directions. TVP is a more complicated and expensive test, so the easier RVP is frequently used instead. I would assume vapor pressure at 37.8 C in literature would match the TVP in literature.
Similar Topics
![]() Storage Tanks Diked Area Fire Protection Using Foam MakerStarted by Guest_mkhattaby_* , 30 Jan 2025 |
|
![]() |
||
![]() N2 Blanketing To Gasoline Tanks With IfrStarted by Guest_NICOLAST_* , 20 Dec 2024 |
|
![]() |
||
Ethylene Tanks Cctv For Leak DetectionStarted by Guest_DarthJamming_* , 30 May 2024 |
|
![]() |
||
![]() Condensate Storage Tanks In-Breathing And Out-BreathingStarted by Guest_MethanolPlant_* , 26 Apr 2024 |
|
![]() |
||
![]() Determination Of The Number Of Foam Chambers For Storage TanksStarted by Guest_AnbIran_* , 15 Feb 2024 |
|
![]() |