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EI Guidance on quantified human reliability analysis (QHRA) aims to reduce the instances of poorly conceived or executed analyses by equipping organisations that plan to undertake, or commission, HRAs with an overview of important practical considerations. It proceeds to outline some of the difficulties with the application of HRA techniques. It promotes the real value of an HRA coming not from the generated HEP, but from the in-depth understanding of task issues that results from the analysis.
This publication is intended for three main audiences:
1. Plant managers or general engineering managers, responsible for commissioning HRA studies.
2. Risk analysis practitioners who need to undertake HRA studies on behalf of their clients and who wish to refresh their knowledge.
3. Senior managers looking for a concise overview of the main issues associated with HRAs.
This publication makes no explicit reference to the requirements of legislative frameworks; however, the intent is that it should be particularly applicable to installations with major accident hazards (i.e. those subject to safety cases) that warrant robust assurance of human performance. Consequently, its guidance should be internationally applicable provided it is read, interpreted and applied in conjunction with relevant national and local requirements.
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