HAZOP – Hazard and Operability Studies
HAZOP is an analysis commonly employed in industry. It depends on systematic identification of dangers and operational inconveniences, arose from deviations of design assumptions.
Analysis is based on PN-IEC 61882:2005 – Hazard And Operability Studies (HAZOP Studies) – Application Guide standard.
HAZOP analysis is carried out by establishing potential hazardous happenings, gathered in the form of keywords. In order to perform HAZOP analysis, a plant is divided into research nodes (processing units or operational units of particular functions). Every single research node constitutes a further step of analysis.
Analysis is prepared for newly designed or modernized plants.
Steps of HAZOP analysis:
- Basis of analysis (gathering essential information on plant: descriptions, P&ID schemes)
- Selection of research team
- Performing and providing records of analysis
- Dividing an installation on research nodes.
- Defined deviation, which can occur with particular possibility is examined in detail on:
- the purpose of deviation occurrence,
- expected side effect of failure,
- employed or designed safety protection systems.
- For every type of failure an assessment must be performer on:
- frequency of danger occurrence (P),
- categories of potential side effects (S),
- risk level (R), resulting from (P) and (S)
- Analysis is conducted for following slogans, keywords or following installation nods. A record of analysis is performed on working sheet, which states analysis documentation and is attached to final report.
- Results scan
- Additional recommendation.
- Final report elaboration
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