NFPA 497A : 1992

Superseded

Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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CLASSIFICATION OF CLASS I HAZARDOUS (CLASSIFIED) LOCATIONS FOR ELECTRICAL INSTALLATIONS IN CHEMICAL PROCESS AREAS

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Superseded date: 01-09-1997

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Published date: 12-01-2013

Publisher: National Fire Protection Association

Table of Contents - (Show below) - (Hide below)

Chapter 1 General
1.1 Scope
1.2 Purpose
1.3 National Electrical Code criteria
Chapter 2 Basic considerations
2.1 National Electrical Code criteria
2.2 Conditions necessary for ignition
2.3 Behavior of gases, vapors, and liquids
2.4 Division 1 classified locations
2.5 Division 2 classified locations
2.6 Nonclassified locations
2.7 Extent of classified location
Chapter 3 Determining the degree and extent of
hazardous (classified) locations
3.1 Diagrams and recommendations
3.2 Bases for recommendations
3.3 Procedure for classifying locations
3.4 Index of classification diagrams
Chapter 4 Referenced publications
Appendix A Referenced publications
Index

Abstract - (Show below) - (Hide below)

Recommends steps to determine the location, type, and scope of hazards presented by electrical installations in operations where flammable or combustible liquids are processed or handled. Coverage includes nonclassified locations, extent of classified location, procedure for classifying locations, conditions necessary for ignition, and index of classification diagrams. Also gives National Electrical Code Criteria.

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Document Type	Standard
ISBN
Pages
Published
Publisher	National Fire Protection Association
Status	Superseded
Superseded By	NFPA 497 : 2017

Standards Referenced By This Book - (Show below) - (Hide below)

ASTM E 1248 : 1990 : R1997	Standard Practice for Shredder Explosion Protection
API 500B : 88 ERRATA	RECOMMENDED PRACTICE FOR CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS AT DRILLING RIGS & PRODUCTION FACILITIES ON LAND & ON MARINE FIXED & MOBILE PLATFORMS
NFPA 49 : 1994	HAZARDOUS CHEMICALS DATA
ISA RP60.4 : 1990	DOCUMENTATION FOR CONTROL CENTERS
API 554-2 : 2008 : R2016	PROCESS CONTROL SYSTEMS - PROCESS CONTROL SYSTEM DESIGN
ASTM E 1248 : 1990 : R2017	Standard Practice for Shredder Explosion Protection
API 554-2 : 2008	PROCESS CONTROL SYSTEMS - PROCESS CONTROL SYSTEM DESIGN
ASTM E 1248 : 1990 : R2004	Standard Practice for Shredder Explosion Protection
ASTM E 1248 : 1990 : R2009	Standard Practice for Shredder Explosion Protection

Standards Referencing This Book - (Show below) - (Hide below)

NFPA 50A : 1999	GASEOUS HYDROGEN SYSTEMS AT CONSUMER SITES
NFPA 50B : 1999	LIQUEFIED HYDROGEN SYSTEMS AT CONSUMER SITES
NFPA 58 : 2017	LIQUEFIED PETROLEUM GAS CODE
NFPA 34 : 2015	DIPPING, COATING, AND PRINTING PROCESSES USING FLAMMABLE OR COMBUSTIBLE LIQUIDS
NFPA 36 : 2017	SOLVENT EXTRACTION PLANTS
NFPA 33 : 2016	SPRAY APPLICATION USING FLAMMABLE OR COMBUSTIBLE MATERIALS
NFPA 35 : 2016	MANUFACTURE OF ORGANIC COATINGS
API 500A : 4ED 82(R1987)	CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS IN PETROLEUM REFINERIES
NFPA 45 : 2015	FIRE PROTECTION FOR LABORATORIES USING CHEMICALS
NFPA 70 : 2017	NATIONAL ELECTRICAL CODE
NFPA 59A : 2016	PRODUCTION, STORAGE, AND HANDLING OF LIQUEFIED NATURAL GAS (LNG)
NFPA 30 : 2018	FLAMMABLE AND COMBUSTIBLE LIQUIDS CODE

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