ISO 15011-2-2009 PDF

Full title and description

ISO 15011-2:2009 — Health and safety in welding and allied processes — Laboratory method for sampling fume and gases — Part 2: Determination of the emission rates of carbon monoxide (CO), carbon dioxide (CO2), nitrogen monoxide (NO) and nitrogen dioxide (NO2) during arc welding, cutting and gouging. The document specifies a hood-based laboratory technique for measuring emission rates of these gases produced by open arc welding, cutting and gouging processes.

Abstract

ISO 15011-2:2009 defines laboratory procedures for measuring emission rates of CO, CO2, NO and NO2 generated during arc welding, cutting and gouging using a fume-hood sampling technique. The method is intended for use with open arc welding processes and with cutting and gouging operations; hood design and sampling arrangements vary depending on the process and whether operations are performed automatically.

General information

• Status: Published — International Standard (confirmed on 8 October 2025).
• Publication date: 5 October 2009 (Edition 2, 2009-10).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.100 (Occupational safety. Industrial hygiene); 25.160.10 (Welding processes).
• Edition / version: Edition 2 (2009).
• Number of pages: 18 pages.

Core bibliographic and lifecycle details (publication date, edition, page count and confirmation status) are recorded on the ISO bibliographic record for ISO 15011-2:2009.

Scope

This part of ISO 15011 specifies laboratory methods for determining the emission rates (mass/time) of the gaseous species carbon monoxide (CO), carbon dioxide (CO2), nitrogen monoxide (NO) and nitrogen dioxide (NO2) produced during arc welding, cutting and gouging. The standard uses a hood (fume capture) technique to collect representative emissions and describes hood designs, sampling arrangements, analytical/measurement approaches, calculation of emission rates and reporting requirements. It is applicable to open arc processes; particulate fume measurement and ozone are treated in other parts of the 15011 series.

Key topics and requirements

• Principle of the hood (fume capture) laboratory sampling technique for gases.
• Recommended hood/test chamber designs and arrangements for different welding, cutting and gouging processes.
• Sampling, collection and handling procedures for CO, CO2, NO and NO2.
• Analytical and instrumentation requirements (gas analyzers, calibrations, quality control and blanks).
• Calculation methods to convert measured concentrations and flow data into emission rates (mass/time).
• Data reporting format, required test parameters and conditions (welding parameters, consumables, automation state).
• Limitations and applicability (focused on open arc processes; other analytes such as ozone and particulate fume are covered in other parts of the series).

Typical use and users

Used by testing laboratories performing controlled laboratory evaluations of welding emissions, occupational hygienists assessing source emission characteristics, manufacturers of welding consumables and equipment (to characterise and compare emissions), certification bodies, regulators and researchers studying welding-related air contaminants. Typical applications include characterizing emission rates for product data sheets, R&D comparisons of processes/consumables, and background data to support workplace exposure assessments.

Related standards

ISO 15011 is a multipart series addressing laboratory sampling of welding fume and gases. Closely related parts include ISO 15011-1:2009 (fume emission rate and collection of particulate fume), ISO 15011-3:2009 (determination of ozone emission rate), and ISO 15011-4 (fume data sheets; later revisions published). The series is maintained by ISO/TC 44/SC 9 (Health and safety in welding and allied processes). Users commonly refer to these companion parts when a broader characterization of welding emissions (particulates, ozone, fume data sheets) is required.

Keywords

welding fume, emission rate, carbon monoxide, carbon dioxide, nitrogen monoxide, nitrogen dioxide, hood sampling, laboratory method, arc welding, cutting, gouging, occupational hygiene, ISO 15011

FAQ

Q: What is this standard?

A: ISO 15011-2:2009 is an ISO international standard that specifies a laboratory hood-based method to measure emission rates of CO, CO2, NO and NO2 produced during arc welding, cutting and gouging.

Q: What does it cover?

A: It covers the sampling hood technique, hood/test arrangement variants, sampling and analytical procedures for the four named gases, calibration and quality-control practices, calculation of emission rates (mass/time) and reporting requirements for laboratory tests. It is intended for open arc welding processes and for cutting and gouging operations.

Q: Who typically uses it?

A: Testing laboratories, occupational hygienists, welding consumable and equipment manufacturers, regulators, conformity and certification bodies, and academic researchers conducting controlled laboratory emission tests. These users apply the standard to generate comparable emission-rate data and support exposure assessments and product information.

Q: Is it current or superseded?

A: ISO 15011-2:2009 (Edition 2) is published and was last reviewed and confirmed by ISO in 2025 (confirmation dated 8 October 2025), so the 2009 edition remains current as of that review. Prior versions (for example ISO 15011-2:2003) were withdrawn and replaced by the 2009 edition.

Q: Is it part of a series?

A: Yes — it is Part 2 of the ISO 15011 multipart series on laboratory methods for sampling welding fume and gases. Companion parts include ISO 15011-1 (particulate/fume emission rate and sampling), ISO 15011-3 (ozone emission), and ISO 15011-4 (fume data sheets), among related guidance and technical reports. Users should consult the other parts when assessing particulate fume or ozone or when preparing fume data sheets.

Q: What are the key keywords?

A: Key keywords are: welding fume, emission rate, CO, CO2, NO, NO2, hood sampling, laboratory method, arc welding, cutting, gouging, occupational hygiene, ISO 15011.