Is The NFPA 704 Symbol Required?
Is The NFPA 704 Symbol Required? A: The NFPA 704 standard is a voluntary standard. NFPA 704 signs are required when another federal, state or local regulation or code requires their use. Some of the more widely adopted and used NFPA codes that require 704 signs for specific occupancies, storage and hazardous materials include: NFPA