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DIN 25424-1

1981 Edition, September 1981

Complete Document

Fault tree analysis; Method and graphical symbols



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Product Details:

  • Revision: 1981 Edition, September 1981
  • Published Date: September 1981
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Deutsches Institut fur Normung E.V. (DIN)
  • Page Count: 8
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

Field of application

This standard gives recommendations on the method of fault tree analysis, on graphical symbols and their use for investigating system failures.

The method can be used for systems of all types. It is also possible to take into account time-dependent factors, for example in the form of repairs, inspection schedules, etc. in assessing fault trees (not covered by DIN 25424 Part 1).

Purpose

Fault tree analysis serves to determine the logical relationships involved in component failures or sub-system failures resulting in an undesired event. The results of this analysis are of use in assessing operational and safety aspects of the system.

The objects of the analysis are:

- systematic identification of all possible combinations of failures (causes) that result in the undesired event,

- determination of reliability parameters, for example frequency of occurrence of combinations of failures, frequency of occurrence of the undesired event or non-availability of the system when required.

Fault tree analysis provides clear documentation of the system investigated which can subsequently be reconstructed.