×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Flash point / Flammablility.. definition

Flash point / Flammablility.. definition

Flash point / Flammablility.. definition

(OP)
All,

i'm looking for a decent summary of flash point v what defines a flammable chemical..
i've seen
Flash point 37 C and below  is flammable (NPFA 30)
Flash point 55 C and below  is flammable
Flash point 92 and below is flammable..

All under different codes.. is there a good resource i can refer to that defines these  

RE: Flash point / Flammablility.. definition


1-7.3.1 Flammable Liquid. Any liquid that has a closed-cup flash point below 100ºF (37.8ºC), as determined by the test procedures and apparatus set forth in 1-7.4.  Flammable liquids shall be classified as Class I as follows:

    (a) Class I Liquid. Any liquid that has a closed-cup flash point below 100ºF (37.8ºC) and a Reid vapor pressure not exceeding 40 psia (2068.6 mm Hg) at 100ºF (37.8ºC), as determined by ASTM D323, Standard Method of Test for Vapor Pressure of Petroleum Products (Reid Method). Class I liquids shall be further classified as follows:

        1. Class IA liquids shall include those liquids that have flash points below 73ºF (22.8ºC) and boiling points below 100ºF (37.8ºC).
            
        2. Class IB liquids shall include those liquids that have flash points below 73ºF (22.8ºC) and boiling points at or above 100ºF (37.8ºC).

        3. Class IC liquids shall include those liquids that have flash points at or above 73ºF (22.8ºC), but below 100ºF (37.8ºC).

1-7.3.2     Combustible Liquid. A combustible liquid shall be defined as any liquid that has a closed-cup flash point at or above 100ºF (37.8ºC), as determined by the test procedures and apparatus set forth in 1-7.4.  Combustible liquids shall be classified as Class II or Class III as follows:

    (a)     Class II Liquid. Any liquid that has a flash point at or above 100ºF (37.8ºC) and below 140ºF (60ºC).

    (b)       Class IIIA. Any liquid that has a flash point at or above 140ºF (60ºC), but below 200ºF (93ºC).

    (c)      Class IIIB. Any liquid that has a flash point at or above 200ºF (93ºC).

 

RE: Flash point / Flammablility.. definition

Check out NFPA 325.  www.nfpa.org.  You should be able to view it for free however you can't print or copy and paste.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources