NFPA 499: Recommended Practice for the Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas

Revision cycle information

Report on Proposals (ROP)

Report on Comments (ROC)

Notice of Intent to Make a Motion (NITMAM)

Buy This Edition

NFPA 499: 2008 Edition   List:  $39.00 Member:  $35.10 Choose Format

Edition to display: 200820041997

Document scope

Read the document scope

Archived revision information

Read the archived revision information

View the document online (read only)

View 2008 edition online

NFPA members and public sector officials may submit a question on an NFPA code or standard. Responses are provided by NFPA staff on an informal basis.

Members

Submit your question online or call +1 800 344-3555 between the hours of 9:00am-5:00pm (EST). Please have your NFPA membership number on-hand.

AHJS/Public Sector Officials

Submit your question online or call +1 800 344-3555 between the hours of 9:00am-5:00pm (EST).

Non-Members

Join NFPA to get access to technical support and information to help you make the right choices in your on-the-job decisions.

Important Notice:  NFPA’s Technical Questions Service is meant to provide information on and assistance in accessing and understanding NFPA codes and standards. Interpretations and opinions contained in responses provided in fulfilling this service do not constitute Formal Interpretations issued pursuant to NFPA Regulations. Any opinion expressed, therefore, is the personal opinion of the responder and does not necessarily represent the official position of the NFPA or its Technical Committees. In addition, responses provided are not intended, nor should they be relied upon, to provide professional consultation or services.