NFPA 497A : 1992
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
CLASSIFICATION OF CLASS I HAZARDOUS (CLASSIFIED) LOCATIONS FOR ELECTRICAL INSTALLATIONS IN CHEMICAL PROCESS AREAS
01-09-1997
12-01-2013
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
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.
DocumentType |
Standard
|
PublisherName |
National Fire Protection Association
|
Status |
Superseded
|
SupersededBy |
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 |
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 |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.