Risk assessment has become an increasingly important tool in all areas of business. Risk Assessment is the process of analysing potential hazards and identifying sensible measures accurately to control the risks at the workplace. At KPB, we address human factors in relation to health and safety, aiming to optimize human performance and reduce human failures. We help our clients take a proportionate approach to human factors in risk assessment based on their hazard and risk profile.
Risk Assessment involves the following elements:
A) Quantitative Risk Assessment (QRA)
Quantitative Risk Assessment (QRA) is a formal and systematic procedure of identifying and evaluating the potential hazards associated with the operations of an engineering process and to demonstrate the risk lies in the ALARP (“as low as reasonably practicable”).
QRA is usually implemented on the basis of major technical hazards leading to potential accident occurrences by using measurable, objective data to decide asset value, probability of loss, and associated risk. A quantitative risk assessment also helps make cost-effective decisions while managing the risks for the entire asset lifecycle.
KPB has progressive experience in a wide variety of risk assessment and risk management applications. We have successfully carried out several risk assessment cases for various offshore and onshore oil and gas installations using very specialized software.
Main Objectives of a QRA Study:
To recognize hazards associated with a facility.
To decide the potential frequencies and consequences of the identified hazards
To decide the system availability of the protection systems.
To quantify the risks associated with a facility (Risk Contours, Individual Risk Per Annum (IRPA), Potential Loss of Life (PLL), and F-N Plots).
Quantitative Risk Assessment process encompasses the following elements:
Quantified Risk Assessment
Safety Case Development and Review
Modelling of Dispersion, Fire, Explosion and Toxic Releases
Safety Audits, Drop Object and Work at Height Surveys for both Onshore and Offshore Rigs
B) Fire and Explosion Risk Assessment (FERA)
Fire and Explosion Risk Assessment (FERA) is a structured and systematic process to identify and assess risks from fire and explosion hazards. The results of this assessment are used to ensure safe facility layouts, specify passive and active fire protection requirements, and to provide input for Escape and Evacuation Risk Assessment (EERA, Emergency Systems Survival Assessment (ESSA), Building Risk Assessment (BRA) and Quantitative Risk Assessment (QRA) studies.
Fire and Explosion Risk Assessment (FERA) comprises quantification of the probability of fire and explosion accidental events, and their consequences. FERA shall quantify risks to the asset associated with events caused by Loss of Containments (LOCs).
Main objectives of FERA include
To analyze and quantitatively assess all credible fire and explosion events connected to flammable inventories that can have an impact on the facilities.
To offer input to decisions connected to the design of systems and equipment, the layout of main areas and equipment, and the requirement to barriers.
To offer appropriate recommendations on the design and operation of the facilities that can achieve a reduction in fire risks.
A Fire and Explosion Risk Assessment includes the below steps:
Identifying all potential LOC that could result in potential fire and explosion hazards on the facilities.
Determining the physical properties of flammable inventory, such as volume, mass flow rates, pressure, temperature, etc.
Identifying the potential release types and the following fire/explosion scenarios like pool fire, jet fire, flash fire, explosion, etc.
Developing the fire/explosion characteristics for each of the identified fire/explosion scenarios (e.g. flame sizes, radiation distances, explosion overpressure distances, etc.).
Determining the leak frequencies linked to each fire/explosion scenario.
Deciding the possible escalation scenarios and consequences of each event, with consideration of the control and mitigation measures proposed.
Proposing additional measures for control and mitigation of the fire/explosion hazards for review as part of ALARP demonstration process.
C) Building Risk Assessment (BRA)
Building Risk Assessment (BRA) is a tool used to evaluate the risks to people in occupied buildings in the facility. It accurately measures the risk and identifies any improvements that are required to ensure that they are adequately safeguarded for any major accidental events.
At KPB Building Risk Assessment is carried out to assess the explosion, fire, and toxic release hazards using the three-stage process outlined by API RP 752. BRA Stage 1 and 2 involve the following steps:
Identifying potential hazards to which the buildings might be exposed, which may be from the operator or neighboring facilities.
Conducting consequence modelling as per Stage 2 BRA requirements and based on plant compositions, data and configuration for the facility.
Performing a detailed stage 3 BRA for major hazards, in case the mitigation measures identified at Stage 2 for the buildings are cost-prohibitive and impractical.
Identifying and recommending suitable prevention and mitigation measures for the building those are subject to unacceptable consequences from potential vapour cloud explosion (VCE), flammable cloud, fire and toxic hazards.
Providing design explosion overpressure and impulse values for the buildings.
Address KPB Consultants Office No 135, Level 1, Incubator Building, Masdar City, Abu Dhabi, UAE