Can you explain when we should use HAZOP and when we must use AMDEC or AMDE risk analysis methods?

HAZOPThe HAZOP method, for HAZard OPerability, was developed by Imperial ChemicalIndustries (ICI) in the early 1970s. It has since been adapted in different sectors of activity. The HAZOP method is dedicated to the risk analysis of thermohydraulic systems for which it is Paramount to master parameters such as pressure, temperature, flow ...The HAZOP no longer considers modes of failure but the potential deviations (or deviations) of The main parameters related to the operation of the installation. As a result, it is centered on The difference in FMEA that is centered on the components. The HAZOP is developed by a group of Which must determine the causes and potential consequences of each of these drifts. It's about Also to identify existing means for detecting this drift, preventing it from occurring Or to limit its effects. Where appropriate, the Working Party may propose remedial measures to With a view to achieving greater security and safety.

AMDEC or AMDE ( FMEA and FMEA)The Failure Modes and Effects Analysis (FMEA) was developed for industryAeronautics during the 1960s. Its use has since widely spread to other sectorsActivities such as the chemical, petroleum or nuclear industry.The AMDE is an inductive method of analysis which allows:• Evaluate the effects and sequence of events caused by each failure modeOf the components of a system on the various functions of that system;• Determine the importance of each mode of failure to the normal operation of theSystem and assess its impact on the reliability, security of the system under consideration, and• Prioritize known failure modes according to the ease of detecting them andTreat them.When it is necessary to assess the criticality of a failure (probability and severity), theModes of Default, Effects and Criticality (FMEA) appears as a logicalFMEA. The AMDEC takes over the main stages of the FMEA and adds a semiquantitative criticality assessment.Source: INERIS P = Probability G = SeverityThe FMEA is very effective when it is implemented for the analysis of simple failuresOf elements leading to the overall failure of the system. The FMEA allows for the identification of Failures that may affect the system being studied. Common modes of failure Correspond to events which simultaneously cause fault conditions on severalSystem components.

I hope this will help. Thanks