BS EN ISO 8130-4:2010
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Coating powders Calculation of lower explosion limit
Hardcopy , PDF
22-04-2022
English
30-04-2011
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Foreword
1 Scope
2 Normative references
3 Definition
4 Sampling
5 Determination of gross calorific value
6 Calculation of the lower explosion limit
7 Test report
Annex A (informative) - Bibliography
List of references
Specifies a method for the calculation of the minimum concentration of the coating powder in air which will form an explosive mixture.
| Committee |
STI/10
|
| DevelopmentNote |
Renumbers & supersedes BS 3900-J8(1993). 2010 version incorporates corrigendum to BS 3900-J8(1993). (04/2011)
|
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
This part of ISO 8130 specifies a method for the calculation of the lower explosion limit of a coating powder, i.e. the minimum concentration of the coating powder in air which will form an explosive mixture. It is based on the knowledge of the gross calorific value of the product, as determined by the method described in ISO 1928, or on the gross calorific values of the constituents of the product. Reliable methods for the measurement of this quantity require the use of special apparatus which may not be readily available, A method for determining the explosion indices of combustible dusts in air is given in ISO 6184-1. This method is, however, very intricate, requires considerable expertise and is expensive. The calculation method leads to lower explosion limits which have been proved in practice to be satisfactory when applied to coating application plants. NOTE 1 With powders that are not flammable, such as those of the poly(vinyl chloride) type, the method may nevertheless give a value for the lower explosion limit in air. Thus, any underestimation of an explosion risk is effectively avoided. NOTE 2 The calculation used in this International Standard is based on the following assumptions: that material exists in the form of a molecular dispersion; that there is complete combustion of the meterial to the highest oxidation level; that there is an adiabatic type of reaction; that the flame temperature for the composition with which the minimum concentration for explosion in air is attained is 1 000 °C.
| Standards | Relationship |
| EN ISO 8130-4:2010 | Identical |
| ISO 8130-4:1992 | Identical |
| ISO 1928:2009 | Solid mineral fuels Determination of gross calorific value by the bomb calorimetric method and calculation of net calorific value |
| ISO 842:1984 | Raw materials for paints and varnishes Sampling |
| ISO 6184-1:1985 | Explosion protection systems Part 1: Determination of explosion indices of combustible dusts in air |
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