ДСТУ EN 60079-29-2:2016 Вибухонебезпечні середовища. Частина 29-2. Газоаналізатори та сигналізатори. Вибір, установлення, застосування та технічне обслуговування аналізаторів і сигналізаторів горючих газів та...

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EN 60079-29-2:2015

Explosive atmospheres — Part 29-2: Gas detectors —
Selection, installation, use and maintenance of detectors
for flammable gases and oxygen

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

ДСТУ EN 60079-29-2:2016
(EN 60079-29-2:2015, IDT)

Вибухонебезпечні середовища. Частина 29-2. Газоаналізатори та сигналізатори.
Вибір, установлення, застосування та технічне обслуговування аналізаторів
і сигналізаторів горючих газів та кисню

З наданням чинності від 2016-11-01

CONTENTS

FOREWORD

INTRODUCTION

1 Scope

2 Normative references

3 Terms and definitions

3.1 Gas properties and other physics

3.2 Types of equipment

3.3 Sensors and detectors

3.4 Supply of gas to instruments

3.5 Signals and alarms

3.6 Times, checks and equipment behaviour

3.7 Terms exclusive to open path equipment

4 Basic information on the properties, behaviour, gases and vapours, and specific applications of gas detection

4.1 Detecting gases and vapours

4.1.1 General

4.1.2 Safety when monitoring for flammable gases where personnel could be present

4.2 Some common properties of gases and vapours

4.3 The differences between detecting gases and vapours

4.3.1 General

4.3.2 Detection of gases

4.3.3 Detection of vapours

4.4 Oxygen deficiency

4.4.1 General

4.4.2 Chemical reaction of oxygen, with solid products

4.4.3 Chemical reaction of oxygen, with gaseous products

4.4.4 Dilution of the air by displacement by some other gas or vapour

4.5 Specific applications of gas detection

4.5.1 Gas detection as means of reducing risk of explosion

4.5.2 Gas free work permit

4.5.3 Monitoring of air inlets

4.6 Specific considerations for open path detection

5 Measuring principles

5.1 General

5.2 Catalytic sensors

5.2.1 General

5.2.2 Common applications

5.2.3 Limitations

5.2.4 Interferences

5.2.5 Poisoning

5.3 Thermal conductivity sensors

5.3.1 General

5.3.2 Common applications

5.3.3 Limitations

5.3.4 Interferences

5.3.5 Poisoning

5.4 Infrared sensors

5.4.1 General

5.4.2 Common applications

5.4.3 Limitations

5.4.4 Interferences

5.4.5 Poisoning

5.5 Semiconductor sensors

5.5.1 General

5.5.2 Common applications

5.5.3 Limitations

5.5.4 Interferences

5.5.5 Poisoning

5.6 Electrochemical sensors

5.6.1 General

5.6.2 Common applications

5.6.3 Limitations

5.6.4 Interferences

5.6.5 Poisoning

5.7 Flame ionization detectors (FID)

5.7.1 General

5.7.2 Common applications

5.7.3 Limitations

5.7.4 Interferences

5.7.5 Poisoning

5.8 Flame temperature analysers (FTA)

5.8.1 General

5.8.2 Common applications

5.8.3 Limitations

5.8.4 Interferences

5.8.5 Poisoning

5.9 Photo ionisation detector (PID)

5.9.1 General

5.9.2 Common applications

5.9.3 Limitations

5.9.4 Interferences

5.9.5 Poisoning

5.10 Paramagnetic oxygen detector

5.10.1 General

5.10.2 Common applications

5.10.3 Limitations

5.10.4 Interference

5.10.5 Poisoning

6 Selection of equipment

6.1 General

6.2 Selection criteria

6.2.1 General criteria

6.2.2 Gases to be detected by the equipment

6.2.3 Application of fixed equipment

6.2.4 Application of transportable and portable equipment

6.3 Miscellaneous factors affecting selection of equipment

6.3.1 Electromagnetic immunity

6.3.2 Intended Zone(s) of use

7 Behaviour of gas releases

7.1 Nature of a release

7.1.1 General

7.1.2 Release rate of gas or vapour

7.1.3 Flammable limits

7.1.4 Ventilation

7.1.5 Relative density of the released gas or vapour

7.1.6 Temperature and/or pressure

7.1.7 Other parameters to be considered

7.1.8 Outdoor sites and open structures

7.2 Buildings and enclosures

7.2.1 General

7.2.2 Unventilated buildings and enclosures

7.2.3 Ventilated buildings and enclosures

7.3 Environmental considerations

8 Design and installation of fixed gas detection systems

8.1 General

8.2 Basic considerations for the installation of fixed systems

8.2.1 General

8.2.2 Point detection equipment and remote sensors

8.2.3 Systems consisting of sampling equipment

8.2.4 Open path (line of sight) equipment

8.3 Location of detection points

8.3.1 General

8.3.2 General site considerations

8.3.3 Environmental conditions

8.4 Access for calibration and maintenance

8.5 Additional considerations for sample lines

8.6 Additional considerations for open path equipment

8.7 Summary of considerations for the location of measuring points and open paths

8.8 Installation of measuring point and open path equipment

8.9 Integrity and safety of fixed systems

8.9.1 General

8.9.2 Redundancy in fixed systems

8.9.3 Protection against loss of main power supply

8.10 Timing of installation during construction operations

8.11 Commissioning

8.11.1 Inspection

8.11.2 Initial gas calibration

8.11.3 Adjustment of alarm set points

8.12 Operating instructions, plans and records

9 Use of portable and transportable flammable gas detection equipment

9.1 General

9.2 Initial and periodic check procedures for portable and transportable instrumentation

9.2.1 General

9.2.2 Inspection and functional checks

9.2.3 Routine tests and recalibration

9.2.4 Maintenance and recalibration

9.3 Guidance on the use of portable and transportable equipment

9.3.1 Electrical safety in hazardous atmospheres

9.3.2 Safety of personnel

9.3.3 Spot tests and sampling

9.3.4 Sampling above liquids

9.3.5 Avoidance of condensation

9.3.6 Poisoning of sensors

9.3.7 Changes of temperature

9.3.8 Accidental damage

9.3.9 Minimalist operation, the “Read and run” concept

10 Training of operational personnel

10.1 General

10.2 General training – Basic limitations and safety

10.3 Operator training

10.4 Maintenance training

11 Maintenance, routine procedures and general administrative control

11.1 General

11.2 Operational checks

11.2.1 General

11.2.2 Fixed systems

11.2.3 Portable and transportable gas detection equipment

11.3 Maintenance

11.3.1 General

11.3.2 Fixed equipment

11.3.3 Portable and transportable gas detection equipment

11.3.4 Off-site maintenance, general

11.3.5 Maintenance procedures

11.4 Sensors

11.4.1 General

11.4.2 Flame arrestor

11.5 Flow systems

11.5.1 General

11.5.2 Inspection

11.5.3 Filters, traps and flame arrestors

11.5.4 Flow system and sample chamber

11.5.5 Flow connections

11.5.6 Moving parts

11.5.7 Automatic sample-draw systems

11.5.8 Loss-of-flow signals

11.6 Readout devices

11.6.1 General

11.6.2 Other readouts

11.7 Alarms

11.8 Calibration

11.8.1 Calibration kits and test equipment

11.8.2 Calibration procedure

Annex A (normative) Measuring principles

A.1 General

A.2 Catalytic sensors

A.2.1 General

A.2.2 Common applications

A.2.3 Limitations

A.2.4 Interferences

A.2.5 Poisoning

A.3 Thermal conductivity sensors

A.3.1 General

A.3.2 Common applications

A.3.3 Limitations

A.3.4 Interferences

A.3.5 Poisoning

A.4 Infrared sensors

A.4.1 General

A.4.2 Common applications

A.4.3 Limitations

A.4.4 Interferences

A.4.5 Poisoning

A.5 Semi-conductor sensors

A.5.1 General

A.5.2 Common applications

A.5.3 Limitations

A.5.4 Interferences

A.5.5 Poisoning

A.6 Electrochemical sensors

A.6.1 General

A.6.2 Common applications

A.6.3 Limitations

A.6.4 Interferences

A.6.5 Poisoning

A.7 Flame ionization detectors (FID)

A.7.1 General

A.7.2 Common applications

A.7.3 Limitations

A.7.4 Interferences

A.7.5 Poisoning

A.8 Flame temperature analysers (FTA)

A.8.1 General

A.8.2 Common applications

A.8.3 Limitations

A.8.4 Interferences

A.8.5 Poisoning

A.9 Photo ionisation detector (PID)

A.9.1 General

A.9.2 Common applications

A.9.3 Limitations

A.9.4 Interferences

A.9.5 Poisoning

A.10 Paramagnetic oxygen detector

A.10.1 General

A.10.2 Common applications

A.10.3 Limitations

A.10.4 Interference

A.10.5 Poisoning

Annex B (informative) Environmental parameters

Annex C (informative) Typical environmental and application check-list for flammable gas detectors (for both Group I and Group II equipment)

Annex D (informative) Typical instrument maintenance record for flammable gas detectors

Annex E (informative) Atmospheric visibility

Bibliography

Figure 1 – Integral concentration over the path length

Figure 2 – Average concentration over the path length

Table 1 – Typical Tasks and Most Relevant Causes

Table 2 – Overview of gas detection equipment with different measuring principles

Table A.1 – Overview of gas detection equipment with different measuring principles

Table B.1 – Environmental parameters