syque.com

The Psychology of Quality and More

| Menu | Books | Share | Search | Settings |

Fault Tree Analysis (FTA)

The failure of an item in a system is often caused by the failure of other items. Fault Tree Analysis, or FTA, provides a method of breaking down these chains of failures, with a key addition for identifying combinations of faults that cause other faults. 

Combinations of faults come in two main types: (a) where several items must fail together to cause another item to fail (an 'and' combination), and (b) where only one of a number of possible faults need happen to cause another item to fail (an 'or' combination).

The FTA diagram shows faults as a hierarchy, with two other symbols to show the 'and' and 'or' combinations, as in the illustration. These are called gates, as they prevent the failure event above them occurring unless their specific conditions are met.

See also:

FMEA

Toolbook chapter: Fault Tree Analysis (FTA)

Site Menu

| Home | Top | Settings |

Quality: | Quality Toolbook | Tools of the Trade | Improvement Encyclopedia | Quality Articles | Being Creative | Being Persuasive |

And: | C Style (Book) | Stories | Articles | Bookstore | My Photos | About | Contact |

Settings: | Computer layout | Mobile layout | Small font | Medium font | Large font | Translate |

 

You can buy books here

More Kindle books:

And the big
paperback book


Look inside

 

Please help and share:

 

| Home | Top | Menu |

© Changing Works 2002-2015
Massive Content -- Maximum Speed