This International Standard describes procedures for modelling the dependability of a systemand for using the model in order to calculate reliability and availability measures.The RBD modelling technique is intended to be applied primarily to systems without repairand where the order in which failures occur does not matter. For systems where the order offailures is to be taken into account or where repairs are to be carried out, other modellingtechniques, such as Markov analysis, are more suitable.It should be noted that although the word “repair” is frequently used in this standard, the word“restore” is equally applicable. Note also that the words “item” a
DS/EN 61078:2006 history
2006DS/EN 61078:2006 Analysis techniques for dependability - Reliability block diagram and boolean methods