Standard operating procedure failure analysis

The purpose of this study is to answer following question can the LARA method be used as a holistic risk management technique in different academic environments and what are the main differences when comparing to the results obtained by industrial risk analysis techniques In order to answer these questions, risk analyses of different procedures were performed using LARA, Failure Mode, Effects, and Criticality Analysis (FMECA), and HAZOP. The experiments andyzed are standard operations performed at University of Pardubice and at EPFL. The main differences of the results using the different methods will be pointed out and compared. 

Systems Hazard Analysis (SHA) is a qualitative method combining aspects of preliminary hazard analysis and failure-mode and effect analysis (Firenze 1973). Its emphasis is on work-tasks performed in various operational procedures. SHA adds two important pieces of information to those methods previously discussed the standards or regulations violated and the relevant subsystem. It chooses a task activity or a dynamic event as the focal point of the analysis rather than a more static component. As with the other methods, an analyst with detailed knowledge of the system is required. 

The system safety case of corrrse varies from sector to sector. The core of a nuclear system safety case is (i) a deterministic analysis of the hazards and farrlts which could arise and cause injury, disability or loss of life fiom the plarrt either on or off the site, and (ii) a demonstration of the sufficiency and adequacy of the provisions (engineering and procedural) for ensuring that the combined frequencies of such events will be acceptably low. Safety systems will feature amongst the risk reducing provisions comprised in this demonstration, which will thus include qualitative substantiations of compliance with appropriate safety engineering standards supplemented (where practicable) by probabihstic analyses of their reliabilities. Other techniques which may be used for stracturing the safety case include fault and event tree analysis, failure mode and effects analysis (FMEA) and hazard and operability studies (HAZOPS). 

---