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GB/T 4888-2009: Terms and symbols for fault tree
Status: Valid GB/T 4888: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4888-2009 | English | 329 |
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Terms and symbols for fault tree
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GB/T 4888-2009
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| GB/T 4888-1985 | English | 439 |
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Terms and symbols of fault tree
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GB/T 4888-1985
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Basic data | Standard ID | GB/T 4888-2009 (GB/T4888-2009) | | Description (Translated English) | Terms and symbols for fault tree | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A41 | | Classification of International Standard | 03.120.30 | | Word Count Estimation | 14,150 | | Date of Issue | 2009-10-15 | | Date of Implementation | 2009-12-01 | | Older Standard (superseded by this standard) | GB/T 4888-1985 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 11 of 2009 (No. 151 overall) | | 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 fault tree analysis method commonly used definitions of basic terms and symbols. This standard applies to fault tree analysis process representation. | GB/T 4888-2009: Terms and symbols for fault tree---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.
Terms and symbols for fault tree
ICS 03.120.30
A41
National Standards of People's Republic of China
Replacing GB/T 4888-1985
Fault Tree terminology and symbols
Posted 2009-10-15
2009-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
2 events and symbols 1
3 logic gates and symbols 3
4 5 transfer symbol
Fault Tree 5 5
Appendix A (informative) fault tree terminology and symbols of Buddhism Example 7
Reference 10
Foreword
This standard replaces GB/T 4888-1985 "fault tree terminology and symbols."
This standard and GB/T 4888-1985 compared to the main changes are as follows.
--- According to GB/T 1.1-2000 "Standardization Guide Part 1. Standard structure and write rules," the requirements of the standard format
It has been revised;
--- Increasing the scope of the standard;
--- Increase the definition of "event";
--- Increased references;
--- Delete some unnecessary comments;
--- To correct some wrong representation symbols.
Appendix A of this standard is an informative annex.
Application of this standard by the National Standardization Technical Committee on statistical methods (SAC/TC21) and focal points.
This standard was drafted. Mathematics and System Sciences, Chinese Academy of Sciences, China Aerospace Science and Industry Corporation, China National Institute of Standardization,
Beijing industry university.
The main drafters of this standard. Dan, Hao Yunfeng, Ding Wenxing, YU Zhen Fan, Feng Shi Yong, Chen Min, Xie law.
This standard replaces the standards previously issued as follows.
--- GB/T 4888-1985.
Fault Tree terminology and symbols
1 Scope
This standard specifies the definition of fault tree analysis method commonly used basic terminology and symbols.
This standard applies fault tree analysis process representation.
2 events and symbols
2.1
Called the event condition or action.
2.2
Only lead to other events cause event.
Note 1. The event is located at the bottom of the bottom of the fault tree in question, always an event input logic gate output event instead.
Note 2. the end of the event are divided into basic events and unproven event.
2.2.1
No need to ascertain the reasons bottom events occurred.
Basic events indicated by circular symbols shown in Fig.
Figure 1 basic Event
See Appendix A of the Explanatory Notes to A. 1.
2.2.2
In principle, should further ascertain the reason but do not have a temporary or temporarily unable to ascertain the reasons for the end of the event.
Unproved event indicated by diamond symbols shown in Figure 2.
Figure 2 unproved event
See Appendix A of the Explanatory Notes to A. 1.
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