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Hazardous Area Classification (Part 1)

Introduction to Hazardous Area Classification (HAC)

A hazardous area is defined as a location where its atmosphere contains, or may contain, in sufficient quantities, flammable or explosive gases, dusts or vapor. In such an atmosphere a fire or explosion is possible when three basic conditions are met. —Omazaki Engineering is a HAC or HazLoc consultant, as business unit in Omazaki Group, who serves IECeX, ATEX or NEC electrical hazardous area classification or hazardous (classified) location classifications consulting services in Indonesia. We are to study plan, classify and design hazardous classified area or locations, Contact us  if you are looking for HAC or HazLoc Consultants in Indonesia by filling in the form in contact, or email us to cs@omazaki.co.id.

This article is first part (Part 1) of a series of articles:

  • Part 1 –  Hazardous Area Classification (HAC)
  • Part 2 – IECEX Hazardous Area Classification
  • Part 3 – ATEX Hazardous Area Classification
  • Part 4 – North America Hazardous Location Classification
  • Part 5 – Electrical Equipment in Hazardous Area

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What is Hazardous Area Classification?

Hazardous Area Classification (HAC) is the process of classifying areas where flammable gas or vapor or mist hazards may arise. The results may then be used as a basis to support the proper selection and installation of equipment for use in an hazardous area.

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Objectives of Hazardous Area Classifications

The objectives of creating a hazardous location classifications includes:

  • For environmental analysis and classification based on hazard level
  • The ultimate goal of the classification relates to the selection and installation of electrical equipment in accordance with the intended hazard classification
  • So that the operation of electrical equipment and the like can be done safely

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Hazardous Location Classifications Standard

There are at least 2 (two) most common standards applied in the hazardous areas or location classification. They are:

  1. European  Standard
  2. North American Standard
European Method

 - hazardous location study - installation hazardous area study - IECEX electrical hazardous location classification - pre electrical hazardous location classifications - study hazardous location classifications - new hazardous location classification - planning hazardous location studies - ATEX scope hazardous area studies - single hazardous location classifications - multi hazardous location classifications - escape plan - standardized hazardous location design - legal hazardous locations design - standard European hazardous area design - EU hazardous area design - Russian hazardous area design - Holland hazardous location designing - France hazardous locations designing - Italian hazardous area designing - New Zealand hazardous area designing - Mexico hazardous location classifying - Brazilian hazardous locations classifying - Monaco hazardous area classifying - Qatar hazardous area classifying - IEEE - ATEX hazardous location classifications - Kenya - NEC hazardous area classifications - Belgium - IECEX hazardous area classifications - Bosnia hazardous location classifications - South Africa - electrical HAC consultant - oil and gas electrical HAC consultants - latest electrical HazLoc consultant - Petronas HazLoc consultants - New Zealand - electrical hazloc consultant - Kyoto eletrical hazloc consultants - Boston - IECEX hazardous area classification - last ATEX hazardous areas classification - IEC hazardous location classification - ATEX hazardous locations classification - chemical industry - HAC consultant in Indonesia - best HAC consultants in Indonesia - hazardous location services - NEC 500 - consultant of hazardous location - Jakarta - hazardous area classification services in Indonesia - The European standard for classifying hazardous areas refers to the International Electrotechnical Commission IEC 60079 Explosive Atmospheres. Classification of hazardous areas is based on zones and groups. So often this European standard is called the Zone System. This system is not only implemented in Europe but also in many countries outside North America.

  • Zones – defines the general nature of the hazardous substance – if it is a gas or dust, and the potential for hazardous materials in the surrounding atmosphere
  • Groups – defines the type of hazardous material and (some) location of the surrounding atmosphere

This Zone System will be discussed in more detail in the next article.

North American Method

 - design hazardous location study - install hazardous area study - IEC electrical hazardous location classification - US electrical hazardous location classifications - studies hazardous location classifications - last hazardous location classification - paper hazardous location studies - NFPA scope hazardous area studies - model hazardous location classifications - industrial hazardous location classifications - explosive mixture - UL hazardous location classifications service - Singapore hazardous area classifications consultants - Kuwait - hazardous area classifications - UEA - hazardous location classifications - Qatar - API 506 HazLoc consultants - USA - API 506 HazLoc consultant - Mexico - NFPA HazLoc consultants - Brazilian - NFPA HazLoc consultant - Peru - API 506 Hazardous Location consultants - Morocco - API 506 Hazardous Location consultant - Tunisia - NFPA Hazardous Location consultants - Gabon - NFPA Hazardous Location consultant - Iraq - API 506 Hazardous Area consultants - Iran - API 506 Hazardous Area consultant - Laos - NFPA Hazardous Area consultants - Italy - NFPA Hazardous Area consultant - petrochemical industry - hazloc consultant - generous - hazloc consultants - best hac consultant in Indonesia - prominent hac consultants in Indonesia - latest hazloc consultant in Indonesia - growth hazloc consultants in Indonesia - rising hac consultant - North America hac consultants - European - hazardous location classification consultants in Indonesia - NEC hazardous location classification - new North America hazardous locations classification in Indonesia - Jakarta - Brazil - hazardous location classification - Canada - divison - hazardous location classification consulting services - industrial hazardous area classification - European hazardous location service providers - The North American standard (North America) classifies hazardous locations based on Article 500 of the National Electrical Code (NEC). Classification of hazardous locations or HazLoc based on classes, divisions and groups. So often this North American standard is called the Class/Division System.

  • Classes — defines the general properties of hazardous materials in the atmosphere
  • Divisions — defines the probability of a hazardous substance being present in the atmosphere
  • Groups — defines the types of hazardous materials in the atmosphere

Class/Division System will be discussed in more detail in the next article.

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Regulations and Reference Standards

  • IEC 60529Degrees of Protection Provided by Enclosures (IP Code)
  • IEC 60079 Series – Explosive Atmospheres
  • National Electrical Code, NFPA 70, Chapter 5, Article 500
  • NFPA 70E, Chapter 5, “Hazardous (Classified) Locations”

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