SIST EN 13274-6:2002

Respiratory protective devices - Methods of test - Part 6: Determination of carbon dioxide content of the inhalation air

This European Standard specifies the test procedure for measuring the carbon dioxide content in the inhaled air (dead space) of respiratory protective devices.

Atemschutzgeräte - Prüfverfahren - Teil 6: Bestimmung des Kohlenstoffdioxid-Gehaltes der Einatemluft

Diese Europäische Norm legt das Verfahren zum Messen des Kohlendioxid-Gehaltes in der Einatemluft (Totraum) für Atemschutzgeräte fest.

Appareils de protection respiratoire - Méthodes d'essai - Partie 6: Détermination de la teneur en dioxyde de carbone de l'air inhalé

La présente norme européenne spécifie le mode opératoire d'essai pour mesurer la teneur en dioxyde de carbone de l'air inspiré (espace mort) des appareils de protection respiratoire.

Oprema za varovanje dihal – Metode preskušanja – 6. del: Določevanje ogljikovega dioksida v vdihanem zraku

General Information

• Status: Published
• Publication Date: 31-May-2002
• ICS: 13.340.30 - Respiratory protective devices
• Technical Committee: OVP - Personal protecting equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jun-2002
• Due Date: 01-Jun-2002
• Completion Date: 01-Jun-2002
• Directive: 2016/425 - Regulation (EU) 2016/425 of the European Parliament and of the Council of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC
• Directive: 89/686/EEC - Council Directive 89/686/EEC of 21 December 1989 on the approximation of the laws of the Member States relating to personal protective equipment
• Mandate: M/031 - Standardization mandate to CEN/CENELEC concerning standards for Personal Protective Equipment
• Ref Project: EN 13274-6:2001 - Respiratory protective devices - Methods of test - Part 6: Determination of carbon dioxide content of the inhalation air

Overview

EN 13274-6:2001 - issued by CEN - defines a standardized test method for determining the carbon dioxide (CO2) content of inhaled air (dead space) in respiratory protective devices. It is a supplement to device-specific standards and is intended for laboratory measurement of CO2 retained within facepieces, hoods or complete respiratory equipment under controlled conditions.

Key topics and technical requirements

• Scope: Specifies the test procedure to measure CO2 concentration in the inhalation air (dead space) of respiratory protective devices.
• Test principle: A breathing machine supplies a defined CO2 concentration to a Sheffield dummy head/torso fitted with the device; inhaled samples are analysed to assess dead-space CO2 (an indicator of CO2 accumulation).
• Typical test arrangement:
  • Sheffield head/torso with concentric tubing and central CO2 sampling tube.
  • Breathing machine with solenoid valves; solenoid action must seal cleanly and avoid timing overlap.
  • Auxiliary lung to sample a fixed fraction of the inhalation stroke in phase with the breathing machine.
  • CO2 analyser, flowmeter, compensator bag and CO2 absorber to control circuit conditions.
  • Auxiliary fan (when applicable) delivering 0.5 m/s at 50 mm in front of the device inlet to prevent rebreathing of exhaled air.
• Example settings: 25 cycles/min and 2.0 L/stroke; auxiliary lung sample = 100 ml (5% of inhalation stroke); CO2 feed ≈ 2.5 L/min to produce 5% CO2 in exhaled air.
• Environmental and equipment constraints:
  • Ambient test conditions: 16 °C to 32 °C, 20% to 80% RH.
  • Total dead space of the test gas path (excluding breathing machine) ≤ 2000 ml.
  • Ambient CO2 measured 50 mm in front of inlet must be < 0.1% (or supply air CO2 < 0.1% for independent-air devices).
• Prerequisites: The applicable device standard must specify sampling numbers, preconditioning, facepiece sizes, sealing method, whether the device is tested complete or as a facepiece, air‑supply settings, direction of supplementary airflow and pass/fail criteria.
• Annexes:
  • Annex A: normative fitting procedure for neck-sealing hoods (collar and pressure control).
  • Annex B: informative guidance on measurement uncertainty.
  • Annex ZA: relationship to EU Directive requirements.

Applications and who uses it

• Manufacturers of respirators and hoods - to evaluate and optimize dead-space design and demonstrate product performance.
• Testing and calibration laboratories - for standardized CO2 measurement during type testing and certification.
• Conformity assessors and certification bodies - to verify compliance with device-specific standards and EU directives.
• Occupational health and safety engineers - to interpret CO2 accumulation risk in PPE selection and workplace PPE policies.

Related standards

• EN 132 (terms and definitions for respiratory protective devices)
• EN 13274 series (other parts): Part 1 (inward leakage), Part 2 (practical performance), Part 3 (breathing resistance), Part 4 (flame tests), Part 5 (climatic conditions), Part 7 (particle filter penetration), Part 8 (dolomite clogging)

Keywords: EN 13274-6:2001, respiratory protective devices, carbon dioxide content, inhalation air, dead space, Sheffield head, breathing machine, CO2 test method, CEN.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Respiratory protective devices - Methods of test - Part 6: Determination of carbon dioxide content of the inhalation airAppareils de protection respiratoire - Méthodes d'essai - Partie 6: Détermination de la teneur en dioxyde de carbone de l'air inhaléAtemschutzgeräte - Prüfverfahren - Teil 6: Bestimmung des Kohlenstoffdioxid-Gehaltes der Einatemluft13.340.30Varovalne dihalne napraveRespiratory protective devicesICS:SIST EN 13274-6:2002enTa slovenski standard je istoveten z:EN 13274-6:200101-junij-2002SIST EN 13274-6:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13274-6December 2001ICS 13.340.30English versionRespiratory protective devices - Methods of test - Part 6:Determination of carbon dioxide content of the inhalation airAppareils de protection respiratoire - Méthodes d'essai -Partie 6: Détermination de la teneur en dioxyde de carbonede l'air inhaléAtemschutzgeräte - Prüfverfahren - Teil 6: Bestimmung desKohlenstoffdioxid-Gehaltes der EinatemluftThis European Standard was approved by CEN on 16 November 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13274-6:2001 E

Fitting procedure for hoods (with or without head harness) which seal aroundthe neck.10A.1Introduction.10A.2Principle.10A.3Apparatus.10A.3.1Sheffield dummy head/torso.10A.3.2Stand and elastic string.10A.3.3Adjustable collar.10A.4Procedure.11Annex B (informative)
Test results - Uncertainty of measurement.14Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.15

direction of any supplementary air flow; pass/fail criteria; any deviations from test method.5 Test method5.1 PrincipleThe device is fitted, as described by the device standard, to a Sheffield dummy head/torso and, in the case ofcomplete equipment tests, any air supply is operated in the manufacturer's minimum condition unless prescribedotherwise by that standard. Breathing air containing a defined concentration of carbon dioxide is supplied at aspecified rate from a breathing machine to a dummy head/torso. The inhaled air is analysed for carbon dioxidecontent.The carbon dioxide level measured gives an assessment of the "dead space" of the facepiece rather than a "reallife" measurement of the level of carbon dioxide in the inhaled air.5.2 Test equipment5.2.1 GeneralA typical test arrangement using a single cylinder breathing machine is shown in Figure 1.The total dead space of the gas path of the test installation, excluding the volume of the breathing machine, shallnot exceed 2000 ml.The test shall be carried out at ambient conditions.5.2.2 Breathing machineA breathing machine and associated equipment with solenoid valves controlled by the breathing machine. In orderto avoid errors in the measurement of carbon dioxide in the inhaled air, it is important that the solenoid valves makea good seal on closing and that the timing of their action allows no overlap to occur.5.2.3 Carbon dioxide sampling arrangementA sample of the inhaled air is taken by an auxiliary lung driven by the breathing machine and in phase with it. It isset to inhale a known sample volume (a chosen percentage of the inhalation volume of the breathing machine)during the inhalation stroke of the breathing machine. This apparent "loss" in inhalation volume of the breathingmachine is compensated for by the volume of carbon dioxide fed via the flowmeter into the breathing machine onits inhalation stroke. It is therefore important that these two volumes are equal.The exhaled air is continuously monitored for carbon dioxide content at a flow determined by the analyser. Thesample point is immediately before the solenoid valve in the exhalation circuit. To maintain equilibrium the sampleis returned to the circuit upstream of the sample point.The carb
...