Posted by ErnieD on February 14, 2012 at 07:58:42 from (67.253.193.102):
In Reply to: EPDM gaskets posted by Fixerupper on February 14, 2012 at 06:34:35:
EPDM is superior to Buna N and short of TEFLON. If you are concerned, and should be, check with your supplier and ask what their experience is. Another alternative is to "cook" a sample at elevated temperature. Each 10 F doubles the rate.
Protect the poly tank from sunlight and support the piping to prevent mechanical stress. Inspect the gasket periodically.
If you need to enter the tank ensure the tank has been cleaned and purged and mechanical ventilation is used. If entry is restricted have a means of rescue.
Check your states DEQ; DEC or whatever their EPA state plan is called to see if your tank requires registration.
Have a plan in mind on how to mitigate a leak. Most leaks develop slowly. (Is there a truck terminal you can call to off load the tank so R+R can be accomplished?)
Ammonia solutions are notorious for slow leaks. I would recommend a impervious slab, with grooves or a grate to aid in leak detection. Keep a written inspection record to document you are aware of the hazard.
Do you have insurance for chemical releases?
Minimize inventory days in storage to control risk.
The two happiest days were when I had a 10 tank farm and when I did not.
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