Quantitative Risk Assessment (QRA) is a formal and methodical method to estimate the likelihood and consequence of potential hazards that could lead to major accidents. The output from this assessment is expressed quantitatively as a risk to personnel/human, environment, or financial loss. Critical assumptions and risk driving elements are also identified to assess the robustness...Continue Reading

Technical Risk Management Tools include Hazard Identification (HAZID), Hazard and Operability Study (HAZOP), Consequence Modelling, Quantitative Risk Assessment (QRA), Layers of Protection Analysis (LOPA), Safety Integrity Level (SIL) Analysis, Failure Mode and Effects Analysis (FMEA) and societal risk (FN Curves).Continue Reading

Risk assessment can be conducted following the identification of major accident hazards within the facility. The Risk Assessment can be revisited in the event of a major change such as new machines, substances, and processes that could potentially lead to a major accident.Continue Reading

Some of the benefits of Risk Assessment include maximising safety at minimum cost, helping to aid in decision making, calculating risk exposure and insurance requirements, as well as fulfilling certain legal requirements.Continue Reading

There are 3 main types of Risk Assessment tools, namely qualitative i.e. using matrices and hazard identification (HAZID) techniques featuring guidewords, semi-quantitative i.e. where word descriptors are associated with numerical ratings and Quantitative Risk Assessment (QRA) which is based on detailed consequence modelling and frequency analysis.Continue Reading

Hazard Identification (HAZID), Assessment of Hazard and Risk, Control of Risk, and Review of the control effectiveness are the principles of Risk Assessment.Continue Reading

Elements of risk assessments are: Identify Hazard Assess Hazard Control Risks Review RiskContinue Reading

A fire alarm system warns people when smoke, fire, carbon monoxide or other fire-related emergencies are detected. These alarms may be activated automatically from smoke detectors, and heat detectors or may also be activated via manual fire alarm activation devices.Continue Reading

Gas detectors can be used to detect combustible, flammable and toxic gases and oxygen depletion. Most devices can measure and detect ammonia, carbon dioxide, nitrogen dioxide, bromine, arsine, ozone, and other gases.Continue Reading

The following standard can be referred to for designing gas detection systems: IEC 60079 Electrical Apparatus for Explosive Gas Atmospheres EEMUA 191 Alarm Systems – A Guide to Design, Management and Procurement EN 50054/56/57/58 Electrical Apparatus for the Detection and Measurement of Combustible Gases ISA RP 12.13.03 Recommended Practice for the Installation, Operation and Maintenance...Continue Reading