Hi Steve,
PE is not much chop for benzene!.
<a href="http://www.iplex.com.au/ChemResistance/details.asp?chem=Benzene">http://www.iplex.com.au/ChemResistance/details.asp?chem=Benzene</a>
Geoff
Design Detail and Development (a division of Blenray Pty Ltd) URL
www.waterhammer.bigblog.com.au
Mail Address PO Box 1351 Castle Hill NSW 1765 Australia Tel Mob 0402 35 2313
Office 02 8850 2313 AH 02 8850 2324
We specialise in pipe network and waterhammer analysis, pipe stress analysis,
the design of buried pipelines and thermoplastic pipe systems.
L&G
A client is carrying out some temporary works requiring storage of oil refinery product including gasoline, benzene, jet fuel, diesel, kerosene and probably a couple I have forgotten. He has already purchased some PE tanks, prior to finalising what would be stored in them. Before I condemn them, I would like to be absolutely sure they are unsuitable for the duty. The reason for this is that they are already purchased, the design life will only be of the order of 3 years, and the tanks walls appear fairly thick. So I am looking for some method of derating the design stresses to compensate for the chemical attack plus a method of uprating the design stress to allow for the relatively short design life. I have some information on the latter, but nothing on the former. Any leads would be welcome.
Second I have been informed that "linear polyethylene" has inferior hydrocarbon resistance than "crosslinked polyethylene" . Can anyone tell me what the linear and crosslinked terms mean in relation to available PE products (eg PE80, PE100, HDPE,MDPE etc), and the nomenclature more commonly used in piping design.
I havent done a web search, but was hoping someone might have an off- -cuff answer. If not, I can do the searching myself.
Thanks
Steve
[Non-text portions of this message have been removed] Received on Thu Jun 22 21:29:00 2006
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