Cleaning of pipes
Cleaning of pipes
(OP)
I would like to know if anybody has experience in cleaning of pipes for O2 service and Ethylene Oxide. Is needed any special requirement?
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RE: Cleaning of pipes
Everyone of the gas suppliers that we worked with had detailed instructions on cleaning existing and new lines.
These procedures may have been codified by now as there was some talk several years ago about doing this.
Do a search on this site.
Come back with your loaction/jurisdiction and someone will be able to tell you what rules you may or may not fall under.
A little about your process conditions will greatly help.
RE: Cleaning of pipes
Ethylene oxide is very dangerous stuff and piping/tanks internal surfaces must not promote polymerization.
The best source of infomation is the guideline contained on:
www.ethyleneoxide.com
Oxygen systems must also be extremely clean....As I recall, the Compressed Gas Association publishes guidelines on piping system design, construction and commisioning.
See G-4.1, G-4.4
http://www.cganet.com/Publication.asp
Additionally:
http://ston.jsc.nasa.gov/collections/TRS/_techrep/TM104823.pdf
My opinion only..
MJC
RE: Cleaning of pipes
I recently had this same problem, and there are much safer chemicals on the market now. I don't want to recommend any, because I have very little experience, but if you contact your O2 supplier for a recommendation on how to clean for your application, they will help. Be careful reading old literature on this subject, I found some literature recommending carbon tetrachloride, which will clean very well, but you also can't use it in most places, and shouldn't want to in the rest.