How to classify flammable liquids and derive the hazard category?

[HVAC-Novice]

I'm determining hazard categories. There are some rooms that store combustible liquids. For example gasoline in plastic cans. There are others, but let's start with gasoline for now. Gasoline is a Class 1B liquid and I assume I can find out for the other liquids what they are. there may be paint, thinner etc.

But how do I find out the hazard category? In NFPA 13 table 4.3.1.7. they use Commodity classes and all of them seem to be solids. The examples in Appendix A don't match anything we have.
I still have to field survey what exactly they store and in what amounts. They are supposed to give me amounts they store and the SDS. but once I know that, I'm still stuck.

How do I use the information of the liquid (Class and volume I assume) to get the equivalent commodity class or the hazard category? Is there another table or information in NFPA 13?

 

[LCREP]

See NFPA 30 for protection ie sprinkler design, fire separation cut off, container type, etc etc. Get a fire protection professional involved it can go wrong real quick depending on the quantity you are dealing with.

 

[goutam_freelance]

NFPA 30 gives classification based on flash points. One needs to find out the applicable liquid flash points from MSDS provided by manufacturers and decide the class accordingly.

 

[cdafd]

As others have stated , will give my spin

1. Get the exact sds for the item stored. You need the brand and item, the owner is supposed to supply that. Make sure it is up to date

2. Find out for that location if and what edition of building and fire code is afopted. Can play into the answer also. Or FM design

3. If just talking about flammable and combustible liquids..,

You need the flash point and boiling point. Than look at the definition for flammable and combustible liquids.
See where each liquid falls.

4. Any other chemicals need to look at fire code or other nfpa standards

If to many chemicals are involved or large quantities hire a Fire Protection Engineer,,,, that has handled haz mat before

Flammable vs. Combustible Liquids - Chemical Strategies, Inc.

The difference between flammable vs. combustible liquids, the definition of combustible liquids, their flash points, and several common questions...

chemicalstrategies.com

 

[SprinklerDesigner2]

I very much agree with LCREP "See NFPA 30 for protection ie sprinkler design, fire separation cut off, container type, etc etc. Get a fire protection professional involved it can go wrong real quick depending on the quantity you are dealing with."

You could hire an FPE or maybe you could contact the owners insurance carrier? Something, in writing, from either one is your get out of jail free card.