Building Risk Assessment (BRA)
Building Risk Assessment (BRA) is a tool used to assess the risks to people in occupied buildings within, or located around a facility. This is also sometimes identified as an Occupied Building Risk Assessment (OBRA).
Stages of a BRA
ES apply the three stages of the BRA as required. The three stages are as follows:
Stage 1: Building Screening
In this stage ES will screen the building based on the occupancy and function of the buildings in the scope of work. Buildings found to be of low occupancy and low risk function will be eliminated from the assessment at this stage.
Stage 2: Building Hazard Assessment
The consequences identified from the Fire, Explosion and Toxic Gas Dispersion and Explosion analysis is used to determine the effects of the hazardous releases on the buildings in Stage 2. Mitigation and Risk reduction measures are typically identified in this stage if required.
Stage 3: Risk Management Assessment
In instances where further risk reduction measures are not appropriate, a risk management assessment will be conducted to evaluate the risks associated with the building.
Method of Conducting BRA
ES apply a software based approach using DNV PHAST. The consequence models are analysed and the risk is calculated to the various occupied buildings taking account of the average building occupancy.
As a minimum, the following information would be required to conduct the study:
– Existing PHA / HAZOP report
– Consequence Analysis Models
– List and Drawings of occupied buildings
– Building Occupancy figures
Based on the project requirements, additional information may be required. This will be highlighted within the Terms of Reference (ToR).
ES have conducted several BRA’s for clients around the world. ES can also conduct them preceding the consequence analysis, as well as other risk analyses such as QRA’s, to quantify the total risk to the facility. For more information, or to discuss your needs for conducting a BRA, please contact us using the form below or email [email protected]