SIST ENV 13936:2002
(Main)Workplace atmospheres - Measurement of chemical agents present as mixtures of airborne particles and vapour - Requirements and test methods
Workplace atmospheres - Measurement of chemical agents present as mixtures of airborne particles and vapour - Requirements and test methods
Migrated from Progress Sheet (TC Comment) (2000-07-10): rev. draft BP: BT to approve the change of deliverable from EN to ENV (TA/990706 ++ --> Res BT C 186/1999 (CC/990924)
Arbeitsplatzatmosphäre - Messung chemischer Stoffe, die als Mischung von luftgetragenen Partikeln und Dämpfen vorkommen - Anforderungen und Prüfverfahren
1.1 Allgemeines
Diese Vornorm legt Anforderungen und Prüfverfahren fest für die Messung der Massekonzentration von einatembaren Luftgetragenen Partikeln in Partikel-Dampf-Mischungen von einer einzelnen Verbindung oder von mehreren Verbindungen unter Berücksichtigung zutreffender vorhandener CEN-Normen. Die Vornorm bezieht sich auf die Messung der einatembaren Konzentration von Verbindungen, unabhängig von der Verteilung in Partikeln und Dampf. Es ist nicht erforderlich, dass sich die Probenahmeverfahren zwischen den Phasen unterscheiden.
1.2 Anwendungsgebiet
Diese Vornorm gibt in Anhang B Hinweise auf verschiedene Verfahrensweisen bei der Probenahme von Partikel-Dampf-Mischungen, ihre Vorteile und Grenzen. Die Vornorm bezieht sich nur auf Probenahmesysteme deren Bestandteile von vorhandenen Normen erfasst sind; es können nicht alle möglichen Verfahrensweisen berücksichtigt werden. Üblicherweise werden die Durchführungsanforderungen getrennt für die Probenahme der luftgetragenen Partikeln und für die Probenahme der Dampfbestandteile untersucht, obwohl, wenn es in Abschnitt 4 nicht anders festgelegt ist, das vollständige System für die Untersuchungen benutzt wird. Die Vornorm ist nicht anwendbar, wenn die zu untersuchende Atmosphäre fast vollständig aus Partikeln oder fast vollständig aus Dampf besteht, weil in diesen Fällen die Probenahme von nur Partikeln oder nur Dampf ohne Überschreitung der in EN 482 festgelegten Messunsicherheitsgrenzen vorgenommen werden kann. In dieser Vornorm wird bei der Berechnung der Messunsicherheit von einer Mischung von etwa gleichen Teilen von Partikeln und Dampf ausgegangen. Diese Annahme wird als zutreffend angesehen, wenn die Masse keiner Fraktion - Partikeln oder Dampf - in der Probenahmemischung mehr als etwa 70 % beträgt.
Atmospheres sur les lieux de travail - Mesurage des agents chimiques sous forme de mélanges de particules aériennes et de vapeurs - Exigences et méthodes d'essai
Généralités
La présente Prénorme spécifie des exigences et des méthodes d'essai permettant le mesurage de la concentration en masse atmosphérique inhalable des mélanges de particules/vapeurs, aussi bien de ceux constitués d'un seul composé que de ceux constitués de plusieurs composés, avec référence aux normes CEN existantes si approprié. Elle s'applique au mesurage de la concentration inhalable des composés, indépendamment de leur répartition sous forme de particules et de vapeurs. La différenciation des phases par les méthodes d'échantillonnage n'est pas requise.
Champ d'application
La présente Prénorme donne des recommandations concernant différentes méthodes d'échantillonnage des mélanges de particules/vapeurs en indiquant leurs avantages et limitations en annexe B. Elle n'est applicable qu'aux systèmes d'échantillonnage dont les éléments relèvent de normes déjà existantes et ne traite pas de toutes les méthodes possibles. En principe, les exigences de performance seront contrôlées par des essais séparés selon qu'il s'agit de l'échantillonnage de particules en suspension dans l'air ou de vapeurs, alors que le système complet sera utilisé pour les essais, sauf spécification contraire fixée dans l'article 4. La présente Prénorme n'est pas applicable lorsque l'atmosphère à échantillonner est presque exclusivement composée de particules ou de vapeurs, auquel cas l'échantillonnage des particules seules ou des vapeurs seules, selon le cas, peut être effectué sans dépassement des limites de l'incertitude globale indiquées dans l'EN 482. Dans cette Prénorme, on calcule l'incertitude globale en supposant que le mélange est constitué de proportions approximativement égales de particules et de vapeur. Cette supposition peut être considérée comme valable lorsqu'aucune proportion - de particules ou de vapeurs - n'est supérieure à 70 % environ du mélange échantillonné.
Zrak na delovnem mestu – Merjenje kemičnih agensov v zmesi lebdečih delcev in par – Zahteve in preskusne metode
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2002
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SDU±=DKWHYHLQSUHVNXVQHPHWRGH
Workplace atmospheres - Measurement of chemical agents present as mixtures of
airborne particles and vapour - Requirements and test methods
Arbeitsplatzatmosphäre - Messung chemischer Stoffe, die als Mischung von
luftgetragenen Partikeln und Dämpfen vorkommen - Anforderungen und Prüfverfahren
Atmospheres sur les lieux de travail - Mesurage des agents chimiques sous forme de
mélanges de particules aériennes et de vapeurs - Exigences et méthodes d'essai
Ta slovenski standard je istoveten z: ENV 13936:2001
ICS:
13.040.30 Kakovost zraka na delovnem Workplace atmospheres
mestu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN PRESTANDARD
ENV 13936
PRÉNORME EUROPÉENNE
EUROPÄISCHE VORNORM
May 2001
ICS 13.040.30
English version
Workplace atmospheres - Measurement of chemical agents
present as mixtures of airborne particles and vapour -
Requirements and test methods
Atmosphères sur les lieux de travail - Mesurage des agents Arbeitsplatzatmosphäre - Messung chemischer Stoffe, die
chimiques sous forme de mélanges de particules aériennes als Mischung von luftgetragenen Partikeln und Dämpfen
et de vapeurs - Exigences et méthodes d'essai vorkommen - Anforderungen und Prüfverfahren
This European Prestandard (ENV) was approved by CEN on 20 April 2001 as a prospective standard for provisional application.
The period of validity of this ENV is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the ENV can be converted into a European Standard.
CEN members are required to announce the existence of this ENV in the same way as for an EN and to make the ENV available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the ENV) until the final
decision about the possible conversion of the ENV into an EN is reached.
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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. ENV 13936:2001 E
worldwide for CEN national Members.
Page 2
Contents
page
Foreword . 4
Introduction. 5
1 Scope. 6
1.1 General. 6
1.2 Field of application. 6
1.3 Object of prestandard . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Requirements . 7
4.1 Requirements for airborne particle sampling. 8
4.2 Requirements for vapour sampling. 8
4.3 Requirements for the sampling device (combined system). 9
4.4 Other requirements. 9
5 Test methods. 9
5.1 Sampled fraction. 9
5.2 Concentration and loading. 10
5.3 Temperature and humidity. 10
5.4 Shelf life . 10
5.5 Maximum capacity of sampler . 10
5.6 Recovery efficiency . 10
5.7 Storage . 10
5.8 Blank value . 10
5.9 Dimension of result. 10
5.10 Air flow stability . 10
5.11 Flow resistance. 11
5.12 Sample identification; methods description; design safety .11
5.13 Electrical safety. 11
Page 3
6 Test report . 11
7 Method description (or instructions for use) . 11
Annex A (normative) Calculation of overall uncertainty for sampling a particle / vapour mixture. 13
Annex B (informative) Possible approaches to sampling particle / vapour mixtures. 16
Bibliography. 19
Page 4
Foreword
This European Prestandard has been prepared by Technical Committee CEN/TC 137 "Assessment of workplace
exposure", the secretariat of which is held by DIN.
Annex A is normative. Annex B is informative.
This Prestandard includes a Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this European Prestandard: Austria, Belgium, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
Page 5
Introduction
CEN/TC 137 'Assessment of workplace exposure' has proposed general performance criteria that methods of
determining the concentration of chemical agents in workplace atmospheres should meet (see EN 482). These
performance criteria include maximum values of overall uncertainty (a combination of precision and bias)
achievable under prescribed laboratory conditions for the methods to be used. In addition, the performance criteria
should also be met under a wider variety of environmental influences, representative of workplace conditions.
Chemical agents are often present in workplace air as complex mixtures, distributed in both gaseous and
non-gaseous phases. These mixtures may be comprised of single compounds, e.g. an aerosol of a volatile liquid in
equilibrium with its own vapour, or of multiple compounds, some of which may be entirely in the vapour phase
(including water vapour), and others entirely in the solid or liquid phase.
For health-related sampling, priority should be given to accurate measurement of the inhalable mass concentration
of harmful chemical agents, regardless of whether they are present as airborne particles or vapour. Collected
volatile materials may move between phases due to a change in conditions, during sampling and subsequently, but
the total collected mass remains unchanged. Similar phase changes will also occur during inhalation and will differ
from those occurring in the sample.
In some cases it may also be desirable to measure the distribution of chemical agents between the particulate and
vapour phases as well as the inhalable mass concentration. For example, there may be compounds whose health
effects are known to differ significantly depending on whether they exist as particles or vapour. In addition, control
measures in the workplace may depend on which phase dominates. Exposure limits may be phase-specific.
However the separate quantitation of particle / vapour mixtures according to phase is technically complex, and
subject to error using existing sampling technologies. For this reason this prestandard does not require the
sampling method to differentiate between phases in a particle / vapour mixture.
Page 6
1 Scope
1.1 General
This prestandard specifies requirements and test methods for measurement of the inhalable airborne mass
concentration of particle / vapour mixtures of both single and multiple compounds, with reference to existing CEN
standards where relevant. The prestandard applies to the measurement of the inhalable concentration of
compounds, regardless of the distribution into particles and vapour. Sampling methods are not required to
differentiate between phases.
1.2 Field of application
This prestandard gives guidance on various approaches to sampling particle / vapour mixtures, their advantages
and limitations, in annex B. The prestandard only applies to sampling systems whose component elements are
covered by existing standards; not all possible approaches can be covered. Normally, performance requirements
will be tested separately for the airborne particle sampling and for the vapour sampling components whilst using
the complete system for the tests, unless otherwise specified in clause 4. The prestandard does not apply when
the atmosphere to be sampled is composed of almost all particles or almost all vapour, in which case sampling
only particles or vapour as appropriate can be carried out without exceeding the overall uncertainty limits stated in
EN 482. In this prestandard, a mixture of approximately equal proportions of particles and vapour is assumed in the
calculation of overall uncertainty. This assumption may be considered valid when no fraction - particles or vapour -
amounts to more than approximately 70% of the sampled mixture.
1.3 Object of prestandard
This European Prestandard should enable method developers and users of particle / vapour sampling systems to
adopt a consistent approach to method validation and provide a framework for the assessment of method
performance against criteria specified in EN 482. It is the responsibility of the manufacturer or of those who
assemble particle / vapour samplers to ensure that the method complies with the overall uncertainty requirements
under the specified laboratory conditions given in this European Prestandard, including the environmental
influences that may be expected to affect performance.
2 Normative references
This European Prestandard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Prestandard only when incorporated in it by amendment or revision. For undated references the latest edition of
the publication referred to applies (including amendments).
EN 481, Workplace atmospheres - Size fraction definitions for measurement of airborne particles.
EN 482, Workplace atmospheres - General requirements for the performance of procedures for the measurement
of chemical agents.
EN 838:1995, Workplace atmospheres - Diffusive samplers for the determination of gases and vapours -
Requirements and test methods.
EN 1076:1997, Workplace atmospheres - Pumped sorbent tubes for the determination of gases and vapours -
Requirements and test methods.
EN 1232:1997, Workplace atmospheres - Pumps for personal sampling of chemical agents - Requirements and
test methods.
EN 1540, Workplace atmospheres - Terminology.
Page 7
EN 12919, Workplace atmospheres - Pumps for the sampling of chemical agents with a volume flow rate of over
5 l/min - Requirements and test methods.
prEN 13205:1998, Workplace atmospheres - Assessment of performance of instruments for measurement of
airborne particle concentrations.
prEN 13890:2000, Workplace atmospheres – Procedures for measuring metals and metalloids in airborne particles
– Requirements and test meth
...
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