GB 12476.8-2010
Electrical apparatus for use in the presence of combustible dust.Part 8:Test methods.Methods for determining the minimum ignition temperatures of dust (English Version)

Standard No.: GB 12476.8-2010
Language: Chinese, Available in English version
Release Date: 2010
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB 12476.8-2010

Scope: This part of GB 12476 specifies two test methods for determining the minimum ignition temperature of dust. This section does not apply to substances with pyrotechnic properties. Method A (Chapter 4) is suitable for determining the minimum decomposition temperature and/or minimum ignition temperature that will result in deposition on specified hot surfaces at a specified dust layer thickness. The method is particularly suitable for dust present as a thin dust layer on hot surfaces of industrial equipment exposed to the environment. Method B (Chapter 5) is suitable for determining the lowest temperature that will cause a dust cloud or other solid particulate sample to ignite for the specified sample. This test is an additional test performed after the minimum ignition temperature of the dust layer determined by method A of this part.

GB 12476.8-2010 Referenced Document

GB/T 6005 Test sieves.Metal wire cloth,perforated metal plate and electroformed sheet.Nominal sizes of openings
GB/T 6919 Air quality--Vocabulary

2010 GB 12476.8-2010 Electrical apparatus for use in the presence of combustible dust.Part 8:Test methods.Methods for determining the minimum ignition temperatures of dust