Norm

NEN-EN 15051:2004 Ontw. en

Werkplekatmosfeer - Meting van stoffigheid van bulkmaterialen - Eisen en referentie beproevingsmethoden

  • Deze norm is ingetrokken sinds 18-05-2006

23,50

Over deze norm

Status Ingetrokken
Aantal pagina's 23
Commissie Werkplek- en buitenluchtmetingen
Gepubliceerd op 01-10-2004
Taal Engels
This document specifies the reference test apparatus and reference test methods for the reproducible production of dust from a bulk material under standard conditions, and the measurement of the inhalable, thoracic and respirable fractions of this dust, with reference to the existing CEN standards, where relevant. This document specifies the environmental conditions, the sample handling and analysis procedures and the method of calculating and presenting the results. A classification scheme for dustiness is specified, to provide a standardised way to express and communicate the results to users of the bulk materials. Two reference test methods are given: Method A produces dust by a multiple continuous dropping process of the bulk material, whereas Method B produces dust by dropping the bulk material once under gravity. Both methods are intended to simulate general handling processes, which involve dropping processes of powdery material at some stage. The two test methods differ however with respect to the intensity and the duration of treatment of the bulk material. This is intentional, as in practice the dust-creating processes in the workplace will also have different characteristics. In some few cases the two test methods will give different results. Examples of this are bulk materials that can agglomerate and bulk materials that comprise brittle powder structures that can break after prolonged handling. Because of these effects, users of this document should choose the dustiness test method most appropriate to their material and handling process, and should state this chosen test method in their test report. In Annex D, a test method is described that enables dustiness information produced by test methods other than these two reference test methods to be related to that produced using these standard reference test methods. This document is applicable to powdered, granular or pelletised materials. A standard sample volume is used. This document is not applicable to test the dust released when solid materials are mechanically reduced (e.g. cut, crushed) or to test handling procedures for the materials.

Details

ICS-code 13.040.30
Nederlandse titel Werkplekatmosfeer - Meting van stoffigheid van bulkmaterialen - Eisen en referentie beproevingsmethoden
Engelse titel Workplace atmospheres - Measurement of the dustiness of bulk materials - Requirements and reference test methods
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