ДСТУ EN 60079-10-1:2018 Взрывоопасные среды. Часть 10-1. Классификация зон. Среды газовые взрывоопасные (EN 60079-10-1:2015, IDT; IEC 60079-10-1:2015, IDT)

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EN 60079-10-1:2015

Explosive atmospheres - Part 10-1: Classification of areas -
Explosive gas atmospheress

прийнято як національний стандарт
методом «підтвердження» за позначенням
Відповідає офіційному тексту

ДСТУ EN 60079-10-1:2018
(EN 60079-10-1:2015, IDT; IEC 60079-10-1:2015, IDT)

Вибухонебезпечні середовища. Частина 10-1. Класифікація зон.
 Середовища газові вибухонебезпечні

З наданням чинності від 2018–09–01

Contents

European foreword

Annex ZA (normative) Normative references to international publications with their corresponding European publications

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 General

4.1 Safety principles

4.2 Area classification objectives

4.3 Explosion risk assessment

4.4 Competence of Personnel

5 Area classification methodology

5.1 General

5.2 Classification by sources of release method

5.3 Use of industry codes and national standards

5.4 Simplified methods

5.5 Combination of methods

6 Release of flammable substance

6.1 General

6.2 Sources of release

6.3 Forms of release

6.3.1 General

6.3.2 Gaseous release

6.3.3 Liquefied under pressure

6.3.4 Liquefied by refrigeration

6.3.5 Aerosols

6.3.6 Vapours

6.3.7 Liquid releases

6.4 Ventilation (or air movement) and dilution

6.5 Main types of ventilation

6.5.1 General

6.5.2 Natural ventilation

6.5.3 Artificial ventilation

6.5.4 Degree of dilution

7 Type of zone

7.1 General

7.2 Influence of grade of the source of release

7.3 Influence of dilution

7.4 Influence of availability of ventilation

8 Extent of zone

9 Documentation

9.1 General

9.2 Drawings, data sheets and tables

Annex A (informative) Suggested presentation of hazardous areas

A.1 Hazardous area zones – Preferred symbols

A.2 Hazardous area suggested shapes

Annex B (informative) Estimation of sources of release

B.1 Symbols

B.2 Examples of grade of release

B.2.1 General

B.2.2 Sources giving a continuous grade of release

B.2.3 Sources giving a primary grade of release

B.2.4 Sources giving a secondary grade of release

B.3 Assessment of grades of release

B.4 Summation of releases

B.5 Hole size and source radius

B.6 Forms of release

B.7 Release rate

B.7.1 General

B.7.2 Estimation of Release Rate

B.7.3 Release rate of evaporative pools

B.8 Release from openings in buildings

B.8.1 General

B.8.2 Openings as possible sources of release

B.8.3 Openings classification

Annex C (informative) Ventilation guidance

C.1 Symbols

C.2 General

C.3 Assessment of ventilation and dilution and its influence on hazardous area

C.3.1 General

C.3.2 Effectiveness of ventilation

C.3.3 Criteria for dilution

C.3.4 Assessment of ventilation velocity

C.3.5 Assessment of the degree of dilution

C.3.6 Dilution in a room

C.3.7 Criteria for availability of ventilation

C.4 Examples of ventilation arrangements and assessments

C.4.1 Introduction

C.4.2 Jet release in a large building

C.4.3 Jet release in a small naturally ventilated building

C.4.4 Jet release in a small artificially ventilated building

C.4.5 Release with low velocity

C.4.6 Fugitive emissions

C.4.7 Local ventilation-extraction

C.5 Natural Ventilation in buildings

C.5.1 General

C.5.2 Wind induced ventilation

C.5.3 Buoyancy induced ventilation

C.5.4 Combination of the natural ventilation induced by wind and buoyancy

Annex D (informative) Estimation of hazardous zones

D.1 General

D.2 Estimating types of the zones

D.3 Estimating the extent of the hazardous zone

Annex E (informative) Examples of hazardous area classification

E.1 General

E.2 Examples

E.3 Example case study for area classification

Annex F (informative) Schematic approach to classification of hazardous areas

F.1 Schematic approach to classification of hazardous areas

F.2 Schematic approach to classification of hazardous areas

F.3 Schematic approach to classification of hazardous areas

F.4 Schematic approach to classification of hazardous areas

Annex G (informative) Flammable mists

Annex H (informative) Hydrogen

Annex I (informative) Hybrid mixtures

I.1 General

I.2 Use of ventilation

I.3 Concentration limits

I.4 Chemical reactions

I.5 Energy/Temperature limits

I.6 Zoning requirements

Annex J (informative) Useful equations in support to hazardous area classification

J.1 General

J.2 Dilution with air of a flammable substance release

J.3 Estimate of the time required to dilute a flammable substance release

Annex K (informative) Industry codes and national standards

K.1 General

Bibliography