Corrosive liquid dip tank dillution.......?

[shack502]

Following IFC 2003... For an open dip tank
(600 gallons-F-2)does anyone go by a dillution factor when figuring classification of product.
I have a open dip tank with (corrosive liquid) 20% class 3, 10% class 2, 70% water. They use it as a paint stripper.
I classified it with the strongest classification unless they could prove otherwise by an outside agency.
Either way, unless proven not a health concern, they will have to change the classification to a H-4 in that area since they are over the exempt amounts.........sound like I am on the right track....thanks for your input....

 

[cdafd]

Does this stuff come premixed, if so there should be a msds for it and would go by that

 

[stookeyfpe]

What is the corrosive liquid? If its an acid, you may be able to reduce the concentration of the solution to a level that will no longer be classified as hazardous. On the other hand, if its a base, once the solution is > 1% volume, you have a corrosive.

Also, your post indicates class 3 and class 2. Are you speaking to a physical hazard, e.g., oxidizer or water-reactive?

 

[shack502]

Sorry for not being very descriptive......
The classification is from the 704 description on the msds and also on the shipping container.
The liquid is not pre-mixed, and is shipped as an acid.
They store the acid, then add to the diluted dip tank as needed.
I have my storage requirements down, but the dip tank has me a bit confused.......
What I have done is require the company to provide me with
an outside agencies report on testing the liquid. If they can prove to me that it is not a health hazard at the dilution point it will be all good. If not, then they will have to meet over exempt amount requirments for that classification for an open system.
All sound OK ?

 

[stookeyfpe]

Your approach sounds reasonable and is consistent with the requirements of the 2003 International Building Code and International Fire Code. You are correct that the dip tank would be treated as a Use-Open System and that the maximum allowable quantity is reduced by the Fire Code for this type of use.