Miljø

ERA Acute

The ERA Acute methodology will be the new industry standard environmental risk assessment (ERA) method on NCS in 2019, replacing the currently used MIRA method.
Background photo

ERAs are carried out with the purpose to assess and ensure acceptable environmental risk for oil and gas offshore operations, aiming to minimize the risk to the environment. ERA Acute has been developed by leading ERA experts, and provides the mean to evaluate the potential risk from an acute oil spill in the marine environment.

The ERA Acute method includes four environmental compartments: the sea surface, shoreline, water column and seafloor. ERA Acute uses input data from an oil spill trajectory model and biological resource data, and calculates the potential environmental risk (impact and recovery time) for biological resources in all compartments.

 The ERA Acute software tool provides relevant visualization of the output results from the ERA Acute method, such as maps, graphs and tables. The tool has applications for environmental risk management, such as a risk matrix and a comparison tool which may support a spill impact mitigation analysis (SIMA) to evaluate that the best response is chosen to minimize impact of oil spills on people and the environment.

 Relevant documents from the method development and dissemination are provided below. 

ERA Acute Method development:

  • EIF Acute Damage and restoration modelling (Report 1)
    • The report (2006) presents the EIF Acute damage and restoration modelling for environmental risk assessment of acute discharges, as a precursor of the ERA Acute method development.

 

  • Threshold values and exposure to risk functions for oil components in the water column to be used for risk assessment of acute discharges (EIF Acute) (Report 2)
    • The report (2006) presents biological effect threshold values and damage functions for oil in the water column. The results were included in the later developed ERA Acute method.

 

  • ERA Acute Phase 3 – Surface compartment (Report 3)
    • The report (2015) presents the ERA Acute method for the sea surface compartment. The report gives a detailed description on how the ERA Acute method calculates the impact and recovery for sea surface resources (e.g. sea birds) after a potential acute oil spill.

 

  • Development of Shoreline Compartment Algorithms (Report 4)
    • The report (2015) presents the ERA Acute method for the shoreline compartment. The report gives a detailed description on how the ERA Acute method calculates the potential impact and recovery for the shoreline after a potential acute oil spill. 

 

  • Joint Report – Impact and restitution model – Water column (Report 5)
    • The report (2015) presents the ERA Acute method for the water column compartment. The report gives a detailed description on how the ERA Acute method calculates the potential impact and recovery for water column resources (e.g. fish) after a potential acute oil spill. 

 

  • ERA Acute – Development of Seafloor Compartment Algorithms (Report 6)
    • The report (2015) presents the ERA Acute method for the sea floor compartment. The report gives a detailed description on how the ERA Acute method calculates the potential impact and recovery for sea floor resources (e.g. corals) after a potential acute oil spill. 

 

ERA Acute Method presented at Conferences:

  • ERA Acute – A Multi-Compartment Quantitative Risk Assessment for Oil Spills

 

 

  • ERA Acute—Implementation of a New Method for Environmental Risk Assessment of Acute Offshore Oil Spills