Containment for Sodium Hydroxide - Tight-Wrap Double Walled Tank
Containment for Sodium Hydroxide - Tight-Wrap Double Walled Tank
(OP)
I'm looking for guidance on containment for a 15,000 gallon steel tank to store 25% sodium hydroxide. I have specified a double-wall tank in lieu of a containment bund. I received an inquiry from the tank supplier asking if a "tight-wrapped double walled containment" is acceptable in lieu of 115% containment capacity. I did not specify 115%, only that the tank must be double-wall construction.
What does tight-wrapped construction entail, and how is this different from a standard double-walled tank? Any double-walled tank would provide >100% containment, correct? What is the significance of 115%?
Thanks for your help.
What does tight-wrapped construction entail, and how is this different from a standard double-walled tank? Any double-walled tank would provide >100% containment, correct? What is the significance of 115%?
Thanks for your help.





RE: Containment for Sodium Hydroxide - Tight-Wrap Double Walled Tank
Tight-wrapped would mean that there is no way to check the integrity or paint the tank walls. I believe that tight-wrapping is mostly used on smaller tank designs. It would also be difficult to monitor the leakage.
There is nothing magical about the 115%. I believe the standard is 100% plus the 24-hour rainfall.
RE: Containment for Sodium Hydroxide - Tight-Wrap Double Walled Tank