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GA/T 1957-2021: Forensic sciences - Specifications for examination of altered documents
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Forensic sciences - Specifications for examination of altered documents
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Basic data | Standard ID | GA/T 1957-2021 (GA/T1957-2021) | | Description (Translated English) | Forensic sciences - Specifications for examination of altered documents | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Word Count Estimation | 7,772 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1957-2021: Forensic sciences - Specifications for examination of altered documents---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Forensic sciences - Specifications for examination of altered documents
ICS 13.310
CCSA92
People's Republic of China Public Safety Industry Standards
Forensic Science Alteration Document Inspection Specification
Published on 2021-10-14
2022-05-01 Implementation
Published by the Ministry of Public Security of the People's Republic of China
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
Please note that some content of this document may be patented. Publication of this document
Institutions do not assume responsibility for identifying patents.
This document is proposed by the National Criminal Technology Standardization Technical Committee Document Inspection Sub-Technical Committee (SAC/TC179/SC10) and
focal point.
This document is drafted by. China Criminal Police Academy, Anhui Provincial Public Security Department, People's Public Security University of China, Heilongjiang Provincial Public Security Department, Dalian City
public security bureau.
The main drafters of this document. Xie Peng, Fang Fang, Li Biao, Wu Xiang, Qin Jing, Huang Jiantong, Liu Cunxiao, Zhang Jing, Chen Weina.
Forensic Science Alteration Document Inspection Specification
1 Scope
This document specifies the classification and characteristics of altered documents in the field of forensic science, preliminary preparations, inspection procedures, presentation of inspection results, inspection records
Records, copies of inspection materials, and identification documents.
This document is suitable for scratch document inspection, faded document inspection, altered document inspection, patched document inspection, and page break in forensic science.
piece inspection.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GA/T 1553-2019 Forensic Science Form Change Document Inspection Specification
3 Terms and Definitions
There are no terms and definitions that need to be defined in this document.
4 Classification and characteristics of altered documents
4.1 Classification
According to the different means of alteration, altered documents can usually be divided into. scraping documents, erasing documents, adding and modifying documents, patching documents, and changing pages.
Form-feed document inspection is performed in accordance with GA/T 1553-2019.
4.2 Features
4.2.1 The characteristics of the scratched part of the scratched document.
a) The paper fibers are lifted, disordered, the thickness is reduced or even damaged, and the reflectance, whiteness, smoothness, fluorescence intensity, and color change;
b) may leave traces or particles of scratching tools;
c) Re-writing the text may have the phenomenon of ink morphological changes such as strokes scattered and scattered;
d) Shading and grid lines are prone to interruptions and defects;
e) Ink traces of the original image and text may remain;
f) Adjacent sheets may have indentations of the original text.
4.2.2 Features of the faded part of the faded file.
a) Fading spots often appear, and the surface of the paper often becomes rough, loses luster, locally shrinks, becomes brittle, or even breaks;
b) There may be residual ink marks or discoloration and fading of the ink marks on the part and its surrounding pictures and texts;
c) Shading and grid lines are prone to discoloration, fading, interruption and defect;
d) Rewriting the text may have strokes scattered, discolored or faded;
e) Adjacent sheets may have indentations of the original text.
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