Experimental methods in chemical engineering: Hazard and operability analysis—<scp>HAZOP</scp>

Abstract Hazards and operability analysis (HAZOP) is one of a dozen‐structured Process Analysis (PHA) methodologies that assess risks associated with operating processes to mitigate their consequences. HAZOP applies all six stages process design from discovery decommissioning. Industry massively adopted PHA as consequence several industrial disasters in the 1970s increased society's scrutiny chemical operations. HAZOPs are conducted by multidisciplinary teams rely on set guide words combination system parameters identify deviations intent. The team discuss causes consequences deviations, project owner modifies accordingly. It relies heuristics rather than algorithms, so formal structure gives practitioners false sense comprehensive. Academic institutions increasingly apply PHAs experimental work, but scope often ill‐suited for this environment it requires dedicated personnel particular expertise. Here, we outline essential features early career researchers engaging development conditions include, example, high temperature, pressure, toxic compounds (Hg, phosgene, CO), potentially explosive flammable mixtures like organic peroxides. Web Science indexed over 100 000 documents mention safety 2021 assigned 1500 engineering. A bibliometric grouped them into five clusters: (1) lithium ion batteries nanoparticles, (2) fire, simulation, combustion, (3) models, risk, systems, techniques (including HAZOP), (4) water treatment, (5) mechanisms thermal runaway. [Correction added 01 September 2022, after first online publication: item number 3 preceding sentence was duplicated original published article has been deleted version.]