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BS ISO 22031:2021

BS ISO 22031:2021

$142.49

Sampling and test method for cleanable filter media taken from filters of systems in operation

Published By Publication Date Number of Pages
BSI 2021 30
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This document specifies a method for sampling fabric filter medium from a filter system in operation, and a test method for evaluating the degradation of the sampled filter medium. It applies to both woven and nonwoven fabric filter media.

This document specifies a method for removing used filter medium from a dry type filtering dust collector, a method for removing dust from the sampled filter medium as part of preparation for testing, and measurement parameters for the test specimen. The number of filter elements to be sampled, their positions in the blocks of filter elements in the dust collector, the position and the size of the test specimens to be cut out from the filter element, measurement parameters and their test methods are also specified.

This document also specifies a storage and transportation method for the sampled filter medium that will protect the health of workers and people conducting the tests.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 Introduction
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Sampling of a representative filter element
4.1 General
10 4.2 Selection of the sampling block in the system
4.2.1 Sampling block
12 4.2.2 Number of filter elements to be sampled
4.2.3 Sampling time and interval
4.3 Procedure for sampling
4.3.1 General
4.3.2 Preparation
4.3.3 Sampling of filter element
13 4.3.4 Installation of new fabric filters
4.3.5 Transportation of sampled filter elements to the test lab
5 Test method for the sampled filter fabric
5.1 General
14 5.2 Appearance inspection
5.3 Photography
5.4 Cutting out of the test specimen
5.5 Testing
5.5.1 General
5.5.2 Tensile strength
5.5.3 Elongation ratio
15 5.5.4 Air permeability
5.5.5 Observation with a microscope
5.5.6 Optional characteristics for measurement
5.6 Handling of the sampled filter after the test
16 6 Precautions for handling samples
17 7 Test report
18 Annex A (informative) Analysing filter media damage through fault tree analysis (FTA)
21 Annex B (informative) Example of test report
25 Annex C (informative) Example of test results
29 Bibliography

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BS ISO 22031:2021
$142.49