ДСТУ EN 746-3:2022 Промислове обладнання для термооброблення. Частина 3. Вимоги щодо безпечності утворення та використання атмосферних газів (EN 746-3:2021, IDT)

ДСТУ EN 746-3:2022
(EN 746-3:2021, IDT)

Промислове обладнання для термооброблення. Частина 3. Вимоги щодо безпечності утворення та використання атмосферних газів

 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

European foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Safety requirements and/or protective/risk reduction measures

4.1 General

4.2 Pipework

4.2.1 General

4.2.2 Connections

4.2.3 Unconnected pipework

4.2.4 Galvanic cells

4.2.5 Flexible tubing and couplings

4.2.6 Marking of pipework

4.2.7 Soundness/Tightness

4.2.8 Condensate drains

4.2.9 Purge points

4.2.10 Blow-off and breather pipes or conduits

4.2.11 Pressure relief devices and flame arrestors on pipework

4.2.12 Pressure oscillations

4.2.13 Combustible gas by-pass

4.2.14 Isolation of required safety devices

4.2.15 Vents

4.3 Required safety devices

4.3.1 Atmosphere gas control equipment

4.3.2 Other safety devices

4.4 Requirements for the use of atmosphere gases

4.4.1 Prevention of potential ignitable atmospheres

4.4.2 Monitoring of TPE doors movements

4.4.3 Supervision of the means of ignition at the point of combustible atmosphere gas discharge

4.4.4 Emergency safety purge

4.5 Change of atmosphere

4.5.1 General

4.5.2 Purge with purge gas

4.5.3 Purge with self-ignition

4.5.4 Change of atmosphere by burning

4.5.5 Purge by evacuation

4.6 Interfaces to exhaust systems for combustible or toxic atmosphere gases

4.6.1 Exhaust of burned gases

4.6.2 Gathering of gases without burning and a closed system

5 Additional requirements for the generation of atmosphere gases

5.1 General

5.2 Gas and process liquid supplies

5.2.1 Air supplies

5.2.2 Reaction mixture supplies

5.2.3 Generated atmosphere gas distribution

5.3 Flame detection

5.4 Burners generating exothermic gases

5.5 Special requirements for different types of generator

5.5.1 Requirements for endothermic generators

5.5.2 Requirements for exothermic generators

5.6 Post-treatment of generated atmosphere gases

6 Verification of the safety requirements and/or measures

7 Information for use

7.1 General

7.2 Marking

7.3 Instruction handbook

7.3.1 General

7.3.2 Description of equipment

7.3.3 Inspection procedures

7.3.4 Commissioning, start-up and operating procedures

7.3.5 Shutdown procedures

7.3.6 Maintenance procedures

7.3.7 Documentation

Annex A (informative) List of significant hazards

Annex B (informative) Typical protective and reactive atmosphere gases

Annex C (normative) Allowed maximum pressure

Annex D (informative) Principle procedures for the change of atmosphere

Annex E (informative) Examples for the determination of safety integrity level SIL and performance level PL using the risk graph method

Annex F (informative) Basic configuration of piping system of TPE using protective or reactive atmosphere gases

Annex G (informative) Overview of the terms defined in ISO 13574 (Vocabulary)

Annex ZA (informative) Relationship between this European Standard and the essential requirements of Directive 2006/42/EC aimed to be covered

Bibliography