Practical Issues with Marginally Explosible Dusts - Evaluating the Real Hazard

Global Congress on Process Safety
2010 Global Congress on Process Safety
Global Congress on Process Safety
March 22, 2010 - 8:00pm

A combustible dust can be non-explosible, marginally explosible or severely explosible. With the exception of a few standards with a quantitative perspective (such as NFPA 68), most safety standards and regulations do not differentiate marginally explosible dusts from severely explosible dusts. As a result, a marginally explosible dust triggers the same legal and technical burden on the users as a severely explosible dust does. The issue is further complicated owing to the fact that the standard explosibility test method is inherently inaccurate when it comes to marginally explosible dusts. This paper demonstrates that OSHA tests can classify non-explosible dusts erroneously as explosible. This paper reviews the state of the art on this topic, and provides a comparison of internationally recognized explosibility/combustibility evaluation test methods with those currently used by OSHA. It also highlights the upcoming substantive changes, being implemented to resolve some of the common issues, in the codes and standards pertaining to life safety, property conservation and electrical area classification.

Professional Development Hours
0.5 PDHs
You will be able to download and print a certificate for these PDH credits once the content has been viewed. If you have already viewed this content, please click here to login.

Would you like to access this content?

No problem. You just have to complete the following steps.

You have completed 0 of 2 steps.

  1. Log in

    You must be logged in to view this content. Log in now.

  2. Purchase Technical Presentation

    You must purchase this technical presentation using one of the options below.
    If you already purchased this content recently, please click here to refresh the system's record of ownerships.


Credits 0.5 Use credits
List Price $25.00 Buy now
AIChE Members $15.00 Buy now
AIChE Undergraduate Student Members Free Free access
AIChE Graduate Student Members Free Free access
Skill Level: