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Content Description Per NFPA's requirements, when purchasing NFPA 2021 Standards and/or 2020 NFPA 70 (NEC), you must subscribe to at least one more NFPA Standard to complete your purchase. In order to fulfill this requirement, we automatically add 2019 NFPA 900 to your cart. This title may be removed during checkout if you choose to add a different NFPA standard to your cart, and pricing will be recalculated accordingly.
Stay on top of safety in chemical process, storage, and handling areas with the updated NFPA 497, 2021 edition.
The release of flammable, combustible substances into an atmosphere with electrical systems or equipment can result in a potentially deadly and destructive incident. NFPA 497, Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas, delivers broad-based requirements for better safeguarding locations that handle these substances.
This vital safety document offers recommended practices that provide a basic understanding of parameters used to classify the extent of a hazardous location. You get criteria for assessing ignitability hazards in chemical process areas, as well as provisions for selecting the appropriate electrical systems and equipment for optimal safety.
NFPA 497 is a must-have guideline for:
Installers and maintainers of electrical equipment located in or near areas where flammable or combustible liquids or flammable gases or vapors are present
Equipment manufacturers providing equipment suitable for use in applicable electrically classified areas
Design engineers, consultants, loss prevention or safety engineers, insurance professionals, enforcing officials, and owners/operators of industrial facilities
The revised NFPA 497 is updated to reflect current industry knowledge and remain consistent with related codes and standards.
The 2021 edition of these recommended practices work in conjunction with NFPA 70, National Electrical Code® (NEC®), to factor ignitability hazards and relevant electrical systems and components.
Additional notable changes for 2021 include:
A revised Table 4.4.2 to update chemical and physical property data based on the Design Institute for Physical Properties (DIPPR) database
Updated Table 4.4.3 to correlate with Table 4.4.2
Be prepared to meet minimum safety requirements for areas using ignitible gases and liquids.
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About NFPAThe mission of the international nonprofit NFPA, established in 1896, is to reduce the worldwide burden of fire and other hazards on the quality of life by providing and advocating consensus codes and standards, research, training, and education.
The world's leading advocate of fire prevention and an authoritative source on public safety, NFPA develops, publishes, and disseminates more than 300 consensus codes and standards intended to minimize the possibility and effects of fire and other risks.
NFPA membership totals more than 70,000 individuals around the world
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