Name: ISA TR12.24.01 : 1998
Brand: ISA

ISA TR12.24.01 : 1998

Withdrawn

RECOMMENDED PRACTICE FOR CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS CLASSIFIED AS CLASS 1, ZONE 0, ZONE 1, OR ZONE 2

Available format(s)

Hardcopy

Withdrawn date

05-01-2015

Language(s)

English

Published date

01-01-1998

Publisher

International Society of Automation

Foreword
1 General
  1.1 Scope
  1.2 References
  1.3 Purpose
2 Definitions and terms
  2.10 Explosive limits
3 Safety and area classification
  3.1 Safety principles
  3.2 Area classification objective
4 Area classification procedure
  4.1 General
  4.2 Sources of release
  4.3 Type of Zone
  4.4 Extent of Zone
  4.5 Extent of zone - General comments
5 Ventilation
  5.1 General
  5.2 Main types of ventilation
  5.3 Degree of ventilation
  5.4 Availability of ventilation
6 Documentation
  6.1 General
  6.2 Drawings, data sheets and tables
Annex A (Informative) Examples of sources of release
      A.1 Process plants and facilities
      A.2 Openings
Annex B (Informative) ventilation
      B.1 Natural ventilation
      B.2 Artificial ventilation
      B.3 Degree of ventilation
      B.4 Assessment of degree of ventilation and its
          influence on the hazardous area
      B.5 Availability of ventilation
      B.6 Practical guide
      B.7 Calculations to ascertain the degree of ventilation
Annex C (Informative) Examples of hazardous area classification
Annex D (Informative) Use of combustible gas detection equipment
Annex E (Informative) United States major deviations

Describes the classification of hazardous areas where flammable gas or vapor risks may arise, in order to permit the proper selection and installation of apparatus for use in such hazardous areas.

Committee	SP12
DevelopmentNote	Supersedes and Renumbers ISA RP12.24.01. (06/2014)
DocumentType	Standard
Pages	66
PublisherName	International Society of Automation
Status	Withdrawn
Supersedes	ISA RP12.24.01 : 1998

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