CL2 gas and 316L 2

[israelkk]

Is a valve made of 316L suitable for CL2 gas fluid?
If it is what is the maximmum temperature?
If it is not what other alloy will do the job?

 

[JOM]

Have a read of the investigation report into the Festus chlorine leak by the US CSB.

A flexible hose made of st/st corroded, leading to a huge release of chlorine from a rail car. It should have been Hastalloy.

Cheers,
John.

 

[israelkk]

Hi John, can you direct me where I can find the investigation report?

Thanks

 

[KURISKRJ]

Our company which handles specialty gas is converting cylinder valves in chlorine service from SS to hastalloy.

 

[hacksaw]

the issue is the small amount of wet Cl2 and occasionally ferric chloride that occurs in vaporized and liquid draw offs. they create havoc with the 316 ss.

 

[stev32k]

hacksaw is right. If you are sure the chlorine is dry and will always be dry 316ss can be used. If there is ever a chance of getting moisture in the system you need something else. The chlorine institute has some good information on materials of construction.

http://www.cl2.com/publications/index.html

 

[JOM]

The US Chemical Safety Board can be found at:

http://www.csb.gov/

Click on "Completed Investigations" and then
"DPC Enterprises Chlorine Release, Festus, MO"

Or this should take you straight to the report:

http://www.csb.gov/completed_investigations/docs/DPC-IR_053003.pdf

Cheers,
John.