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GB/T 16840.1-2008: Technical determination method for electrical fire evidence -- Part 1: Macroscopic method
Status: Valid GB/T 16840.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 16840.1-2008 | English | 139 |
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Technical determination method for electrical fire evidence -- Part 1: Macroscopic method
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GB/T 16840.1-2008
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| GB 16840.1-1997 | English | 279 |
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Technical determination method for electrical fire cause. Part 1: Macroscopic method
| Obsolete |
GB 16840.1-1997
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PDF similar to GB/T 16840.1-2008
Basic data | Standard ID | GB/T 16840.1-2008 (GB/T16840.1-2008) | | Description (Translated English) | Technical determination method for electrical fire evidence -- Part 1: Macroscopic method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C82 | | Classification of International Standard | 13.220 | | Word Count Estimation | 6,622 | | Date of Issue | 2008-07-02 | | Date of Implementation | 2009-05-01 | | Older Standard (superseded by this standard) | GB 16840.1-1997 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.11 (Total No.124) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the electrical fire Traces technical appraisal method-define macro law, principle, instrument, method steps and criterion, specimens. This section applies to the cause of the fire investigation, fire scene extraction of copper, molten aluminum wire marks, according to the characteristics or the appearance of holes in the surface morphology of the cross-section bead features technical appraisal, identify its melting properties. | GB/T 16840.1-2008: Technical determination method for electrical fire evidence -- Part 1: Macroscopic method
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Technical determination method for electrical fire evidence.Part 1. Macroscopic method
ICS 13.220
C82
National Standards of People's Republic of China
Replacing GB 16840.1-1997
Electrical fire technical traces of evidence identification methods
Part 1. Macro method
Posted 2008-07-02
2009-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 16840 "mark evidence of electrical fire technical appraisal method" consists of the following components.
--- Part 1. Macro method;
--- Part 2. remanence method;
--- Part 3. Auger analysis;
--- Part 4. Metallographic analysis;
This section GB/T 16840 Part 1.
This Part replaces GB 16840.1-1997 "electrical fire cause identification technology - Part 1. Macro method."
The main difference between this part and GB 16840.1-1997 follows.
--- Standard by the mandatory standards to voluntary standards;
--- Standard name from "electrical fire cause identification technology - Part 1. Macro method" to "electrical fire technical traces of evidence Kam
Setting Method - Part 1. Macro Law ";
--- Chapter 1 Scope, adjust the original scope of the standard;
--- Chapter 2 Terms and definitions, while retaining and improving on the original standard, the addition of 2.7 samples, a short change 2.4
Melt road mark, 2.5 second short-circuit weld mark on the contents;
Chapter 3 --- principle, while retaining the original standard contents, on the part of words edited adjustment;
--- Chapter 4 device, adjust the chapter name, and the content has been modified;
--- This part of the original chapter 5 standard method step, Chapter 5, section-oriented decomposition of the sample and the method steps in Chapter 6;
--- Chapter 5 of this part of the sample, mainly extracted from the sample and the sample taken, etc. to make provisions;
--- Part 6 process steps, mainly in terms of sample handling and sample observation, etc. to make provision;
--- Remove Programs written in Chapter 7, the original criteria for inspection and identification should be performed.
This section presents the People's Republic of China Ministry of Public Security.
This part of the National Standardization Technical Committee of the Sixth Fire Technical Committee (SAC/TC113/SC6) centralized.
This section drafted by. Ministry of Public Security Shenyang Fire Research Institute.
The main drafters of this section. Di Man, Gao Wei, Zhao Long, Zhang.
This part of the standard replaces the previous editions are.
--- GB 16840.1-1997.
Electrical fire technical traces of evidence identification methods
Part 1. Macro method
1 Scope
GB/T 16840 provisions of this part of the definition of electrical fire mark evidence the technical appraisal method --- macroscopic law, principles, instruments, test
Thus, the method steps and the criterion.
This section applies to the cause of the fire investigation, fire scene to extract copper, aluminum wire melting mark, according to the appearance characteristics or bead cut faces
Inside surface morphology identification technology to identify the melting properties.
2 Terms and definitions
The following terms and definitions apply to this section.
2.1
In the external short circuit arc flame or high temperature, the metal surface, especially the formation of copper, aluminum conductor circular, crater-like, nodular, sharp
Shaped and other irregular Microfused or full penetration marks.
2.2
Copper, aluminum wire high temperature by the external flame or short arc, bead-like after the end of the wire, the middle or darting formed melt
trace.
2.3
Copper, aluminum, lead by the scene of the fire in the fire melted high temperature occur, melting marks on the wire form.
2.4
Under normal environmental conditions, copper, aluminum wire because of their short-circuit failure, melt marks on the wire form.
2.5
Under fire environmental conditions, copper, aluminum wire failure caused by a short circuit in the wire forming melt marks.
2.6
When copper, aluminum wire bead is formed by short circuit in the bead holes inside there.
2.7
Scene of the fire to melt contained traces of conductors.
Principle 3
Copper, aluminum wire either fire or short circuit arc thermal effect of high temperature melting, in addition to all of the loss on ignition, it is generally able to find traces of residual melt,
It was the appearance of a representative of the environmental conditions features.
A short circuit and a secondary melting marks Melting marks belong to short-circuit the moment the arc melting temperature, melting range with a small, fast cooling features, but
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