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Hazard and Operability (HAZOP) Studies

HAZOP Studies

HAZOP is the abbreviation of hazard and operability study and is internationally recognised as a technique for hazard identification, risk assessment and the implementation of process projects.

Why undertake a HAZOP?

The assessment is used to detect potential dangers and operability problems concerning technological and organisational objects that have the potential to deviate from design plans. The study is completed using an analysis of resistance of an object to artificially modelled deviations.

It does this by applying simple guidewords (for example, More Less, None etc) to process parameters (for example pressure flow, temperature, concentration etc) in a very robust and systematic manner.

A HAZOP should be conducted during the early stages of a design where all possible desirable and undesirable behaviours of the system are laid. The design should essentially have been determined and fixed, and fully represented in the form of a Process and Instrumentation Diagram (P&ID). 

At this stage the detailed design and specific process equipment items will be known (for example, type of pump used; maximum pressure and flow rate that the pump can deliver, materials of construction of the pump etc).  The obtained data during this study will help industry experts to ensure timely responses to potential dangers and make necessary adjustments to the project to eliminate the possibilities of residual risks in later design stages. 

The methodology ensures that the process, and its potential deviations, and the protection systems employed to ensure safety are fully understood by the business.

Understanding HAZOP

During a HAZOP study, a group of specialists from various scientific disciplines work under the leadership of a HAZOP chairperson to systematically examine relevant parts of a project or system. The research applies different methodologies that are suitable for identifying potential hazards and health problems. This may include checklists and the analysis of the types of dangers and consequences of failures. Based on the study, experts then prepare final documentation for business projects.

After undertaking a HAZOP, specific scenarios are generated and then prioritised by risk. With a selection of safety, prevention, control and mitigation measures recorded, outputs can then be used to analyse multiple scenarios before the potential use of any further studies (for example, Layers of Protection Analysis (LOPA)) to ensure the effectiveness and integrity of the measures appropriately meet recognised risk tolerability criteria

Online HAZOP Solutions

Sigma-HSE offer onsite and online HAZOP solutions with experienced process safety consultants. Our leaders have a vast array of knowledge and expertise in industrial process safety which they bring to HAZOP Leadership. Online HAZOP has the added advantage of bringing together teams from different sites and different countries to share their knowledge and understanding of common process issues without lost travel time or accommodation expenses. Our other online solutions for process safety also include HAZID, What-If, LOPA sessions, FERA, QRA, Dispersion and Consequence Modelling, desktop HAC, ATEX and DSEAR assessments for new and existing plant.

The Sigma-HSE Advantage

Our dedicated safety consultants have years of industry experience and can apply multiple techniques across a range of industries and businesses. We have undertaken studies across the full range of the processing industries (chemicals, pharmaceuticals, explosives, food & hygiene, waste, onshore oil & gas, etc) and processing operations (chemical reaction technology, storage and transfer systems, incineration systems etc). Our team of experts are committed to helping you ensure and maintain compliance without the exorbitant fees and delay to your operations.

We also offer bespoke HAZOP training packages. 

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Detect potential hazards and operability problems with a HAZOP

Undertaking Hazard and Operability studies are an important aspect to keeping people, business
and the environment safe. Learn more about how we can assist you today.