7 replies to this topic

[rasprocess]

Hi everyone.

 

I'm looking for standard, spec or criteria for a special case:

 

LPG transporting by truck and tanker. I'm looking specially for pressure and wall thickness limitations. How can I find this? I will appreciate u if give me some help.

 

thanks

[Bobby Strain]

You should find information for the USA at the DOT website.

 

Bobby

[ankur2061]

rasprocess,

 

Have you tried to google using keywords such as "LPG tank truck specifications" and "LPG rail tank car specifications". I got 232,000 hits for the first set of keywords and 531,000 hits for the second one.

 

Some of the links provided through google search proved interesting:

 

http://www.osh.dol.g...df/lpg-tank.pdf

 

http://www.propanesa...-Bulk_Trans.pdf

 

http://www.americanr...ssure-33600.pdf

 

http://www.rsiweb.or...ar_brochure.pdf

 

http://www.marts-rai...ility Mode].pdf

 

http://www.arleasing...ets/VCM-LPG.pdf

 

Regards,

Ankur.

[rasprocess]

Hi. thanks a lot. these mentioned brochures and pdfs with data are good guidelines but I am looking for special criteria which identifies limitation of transport pressure, maximum of plate thickness and ....

 

best regards

[Art Montemayor]

RasProcess:

 

You are not going to find pressure and wall thickness limitations, as well as limitation of transport pressure, maximum of plate thickness on the Web for LPG storage and transport.  LPG, as noted in many previous threads in our Forums, is A MIXTURE OF MAINLY PROPANE AND BUTANE.  The MAWP designed into a transport tank depends on the composition of the LPG in question.

 

LPG tanks (both storage and transport) are usually designed under the ASME VIII code - or similar codes elsewhere.  It is an easy matter to calculate the thickness of a transport vessel and I don't see your problem.   Are you not a chemical or mechanical engineer?  I usually do these type of calculations manually for preliminary purposes and finish off the final design with programs such as CodeCalc, Tanks, etc.   You can get very, very close to the final answer with manual calculations.  In fact, I've had LPG tanks fabricated using nothing more than my hand calculations.  You can also do the same.  Of course, you have to understand and use codes such as ASME VIII.

[rasprocess]

Hi Art Montemayor

Thanks a lot for your useful guidelines. I am chemical engineer. I will appreciate you if you give me a manual calculation of what you mentioned in your answer.

 

How can I use ASME VIII for this problem?

 

best regards

[Art Montemayor]

Rasprocess:

 

This subject has been discussed many, many times in our forums.  Use the SEARCH engine to find all the related threads that address this subject in detail.

 

To want tools is one thing.  To know how to use the tools is another.  First, learn how to use the tools by obtaining, reading and studying ASME VIII (or the related code you plan to use).  All the instruction are to be found in ASME VIII.

 

For a quick guide, read the attached information and go to the related website source and download all the information offered.  It will allow you to design a pressure vessel on a preliminary basis.  But you still have to know what you are doing according to ASME VIII.  There are no shortcuts.

 

 Pressure Vessel Design Tools.docx   101.91KB   28 downloads

[rasprocess]

Hi

thanks a lot

 

sincerely yours