GB/T 4888-2009Terms and symbols for fault tree (English PDF)
故障树名词术语和符号
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 15, 2009
Implementation date
December 1, 2009
Scope
GB/T 4888-2009 is the English-translated version of 故障树名词术语和符号.
GB/T 4888-2009 is the Chinese standard "Terms and symbols for fault tree". Its scope clause reads: This standard specifies the definition of fault tree analysis method commonly used basic terminology and symbols.
This standard applies fault tree analysis process representation. Its clauses include events and symbols.
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Document preview — GB/T 4888-2009
National Standard of the People's Republic of China
- ICS
- 03.120.30
- Classification
- A 41
- Replacing
- GB/T 4888-1985
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 events and symbols
- 3 logic gates and symbols
- 4 5 transfer symbol
- Appendix A (informative) fault tree terminology and symbols of Buddhism Example
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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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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Editions of GB/T 4888
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4888-2009 | Terms and symbols for fault tree | current edition | Current |
| GB/T 4888-1985 | Terms and symbols for fault tree | previous edition | Superseded |
This page sells the current edition, GB/T 4888-2009. Earlier editions are listed for reference only.
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