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BS EN IEC 61482-1-1:2019

BS EN IEC 61482-1-1:2019

$198.66

Live working. Protective clothing against the thermal hazards of an electric arc – Test methods. Method 1: Determination of the arc rating (ELIM, ATPV and/or EBT) of clothing materials and of protective clothing using an open arc

Published By Publication Date Number of Pages
BSI 2019 70
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This part of IEC 61482 specifies test method procedures to determine the arc rating of flame resistant clothing materials and garments or assemblies of garments intended for use in clothing for workers if there is an electric arc hazard.

An open arc under controlled laboratory conditions is used to determine the values of ELIM, ATPV or EBT of materials, garments or assemblies of garments.

NOTE 1 The user can, if he desires, classify the arc protective performance into arc rating protection levels based on ELIM, ATPV and/or EBT values which correspond best to the different hazard and risks levels that can result from the user’s risk analysis.

NOTE 2 This document is not dedicated to classifying the arc protective performance of the material and clothing into arc protection classes. Procedures determining these arc protection classes APC1 and APC2 are specified in IEC 61482-1-2, which uses a constrained arc for testing.

NOTE 3 This test method is not intended and not appropriate to evaluate whether materials or garments are flame resistant or not, as this is covered in IEC 61482-2.

Other effects than the thermal effects of an electric arc like noise, light emissions, pressure rise, hot oil, electric shock, the consequences of physical and mental shock or toxic influences are not covered by this document.

Protective clothing for work intentionally using an electric arc, e.g. arc welding, plasma torch, is not covered by this document.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
9 FOREWORD
11 1 Scope
2 Normative references
12 3 Terms, definitions, symbols and units
3.1 Terms and definitions
17 3.2 Symbols and units
4 Principle of test procedures A and B
4.1 Procedure A – Material open arc test procedure
18 4.2 Procedure B – Garment open arc test procedure
5 Significance and use of the test procedures A and B
5.1 General
19 5.2 Procedure A – Material open arc test procedure
5.3 Procedure B – Garment open arc test procedure
6 Test apparatus
6.1 General
6.2 Calorimetric sensors
6.2.1 Calorimeter construction
21 6.2.2 Panel sensor construction
Figures
Figure 1 – Example of calorimeter construction
22 Figure 2 – Example of the panel sensor construction
23 6.2.3 Monitor sensor construction and positioning
Figure 3 – Example of monitor sensor construction, with optional cover plate
24 6.3 Panel construction
Tables
Table 1 – Positioning of monitor sensors depending on incident energy exposure
25 Figure 4 – Panel
26 6.4 Mannequin construction
Figure 5 – Example of material clamping assembly of a panel
27 6.5 Arrangement of panels and monitor sensors for testing according to Procedure A
28 6.6 Arrangement of mannequin(s) and monitor sensors for testing according to Procedure B
Figure 6 – Arrangement of three two-sensor panelswith monitoring sensors (top view) for testing according to Procedure A
29 Figure 7 – Relative positioning of arc electrodes and ofmannequin(s) and monitor sensors for testing according to Procedure B
31 Figure 8 – Examples of mannequin configuration
32 6.7 Supply bus and electrodes
6.7.1 General
6.7.2 Structural cage arrangement
33 Figure 9 – Example of cage arrangement (supply bus, bus tubes and arc electrodes) shown together with three panels for testing according to Procedure A (monitor sensors are not shown)
34 6.7.3 Electrodes
6.7.4 Fuse wire
6.8 Electric supply
Figure 10 – Relative positioning of cage arrangement (supply bus, bus tubes and arc electrodes) and of one torso mannequin and its monitor sensors for testing according to Procedure B
35 6.9 Test-circuit control
6.10 Data acquisition and data processing system
6.10.1 General
6.10.2 Data acquisition
36 6.10.3 Signal synchronization
7 Operator safety
37 8 Specimen preparation
8.1 Description of the test specimens
8.1.1 Test specimens for Procedure A
8.1.2 Test specimens for Procedure B
38 8.2 Pre-treatment of test specimens by cleaning
8.3 Pre-conditioning of the test specimens
9 Calibration and verification
9.1 Data acquisition system pre-calibration
9.2 Verification of calorimeters
39 9.3 Arc exposure and apparatus verification for the two-sensor panels and the monitoring sensors
9.3.1 Set-up of electrodes and fuse wire
9.3.2 Positioning of the two-sensor panels, mannequins and monitor sensors
9.3.3 Verification bare shot
40 9.3.4 Verification bare shot test protocol
10 Test apparatus care and maintenance
10.1 Surface reconditioning
41 10.2 Care of panels, mannequins and sensors
10.3 Care of electrodes
11 Test procedures
11.1 Procedure A – testing with panels
11.1.1 Test parameter and settings
11.1.2 Sequence of tests with test specimens of material or material assembly
42 11.1.3 Criteria for set of data obtained from iterative process of test shots
43 11.2 Procedure B – testing with mannequins
11.2.1 Test parameters and settings
11.2.2 Single test or sequence of tests with test specimen(s) of garment or garment assembly
44 11.3 Air ventilation and initial temperature of sensors
11.4 Specimen mounting
11.4.1 Procedure A – testing with panels
11.4.2 Procedure B – testing with mannequins
46 11.5 Specimen description
11.6 Test protocol
47 12 Test results
12.1 Heat calculation
12.1.1 General
12.1.2 Copper heat capacity
12.1.3 Incident and transmitted energy
48 12.1.4 Panel sensor response (transmitted energy (Et) comparison with Stoll curve)
49 12.1.5 Monitor sensor responses (incident energy (Ei))
Figure 11 – Typical average transmitted energy curves Qt,avg (i.e. average response of the two sensors of same panel) for test specimens
50 12.2 Determination of arc thermal performance value (ATPV)
12.3 Determination of breakopen threshold energy (EBT)
51 12.4 Determination of the incident energy limit (ELIM)
12.5 Visual inspection
Table 2 – Reporting requirements and rating of visual inspection performance in case of testing clothing material(s) according to Procedure A and garment(s) or an assembly of garments according to Procedure B
53 12.6 Arc rating
12.6.1 Arc rating of a material or material assembly
12.6.2 Arc rating of a garment or garment assembly
54 13 Test report
13.1 Reporting requirements common for tests according to Procedures A and B
Table 3 – Visual assessment criteria in case of testing garment(s) or a garment assembly according to Procedure B
55 13.2 Reporting requirements specific for tests according to Procedure A
56 13.3 Reporting requirements specific for tests according to Procedure B
58 Annex A (informative)Logistic regression technique
60 Annex B (informative)95 % confidence intervals of ATPV and EBT
Figure B.1 – Probability density function (PDF)
61 Figure B.2 – Cumulative density (CDF)
62 Table B.1 – Example of incident energy X and binary response Y (fulfillment of Stoll criteria) for 21 test shots
63 Figure B.3 – Graph with probability, lower and upper limits
64 Annex C (informative)Iterative process of test shots of Procedure A
65 Annex D (informative)Example materials for insulating and mounting boards
D.1 General
D.2 Materials for use as thermally insulating mounting board (6.2)
66 D.3 Materials for use as mounting board, but not sufficiently thermally insulating for use as insulating board (6.3)
67 Annex E (informative)Recommended provisions for use of the test methodfor accident replication and for research
68 Bibliography

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BS EN IEC 61482-1-1:2019
$198.66