Foreword

Introduction

1Scope

2Normative references

3Terms and definitions

4Principle

5Equipment and materials

6Test procedures

6.1Welding procedure selection

6.2Manual metal arc welding

6.2.1Setting up the test chamber

6.2.2Trial tests

6.2.2.1Trial test to set the test current

6.2.2.2Trial test to establish the test time for emission rate tests

6.2.3Emission rate tests

6.2.4Fume collection for analysis

6.3Continuous wire processes

6.3.1Setting up of the test equipment

6.3.2Trial tests

6.3.2.1Trial test to set the test conditions

6.3.2.2Trial test to establish the test time for emission rate tests

6.3.3Emission rate tests

6.3.4Fume collection for analysis

6.4Analysis of the fume collected

7Calculating and reporting the results

Annex APossible designs of test chamber (informative)

A.1Test chambers of the “hood” type

A.1.1Field of use

A.1.2Design 1

A.1.3Design 2

A.2Test chambers of the “fume box” type

A.2.1Field of use

A.2.2Design 3

A.3Interconvertible test chambers

A.3.1Field of use

A.3.2Design 4

Annex BEquipment notes (informative)

B.1Construction of the test chamber

B.2Filters

B.3Extraction unit

B.4Equipment for measuring shielding gas flow rate

B.5Test pieces

B.6Interference-free environment

Annex CWelding parameters (informative)

C.1Starting test conditions

C.2Welding position

C.3Torch angle and travel direction

C.4Welding speed

C.5Polarity

C.6The CTWD

C.7Shielding gas flow rate

C.8Gas nozzle

Annex DTest procedures (normative)

D.1Attaching the leads for measuring voltage and current

D.2Setting the CTWD

Annex ETest report (normative)

Bibliography