AROS 3D – Risk

Risk is defined as the potential for harm to personnel. Mathematically it is described as:

• Risk = Frequency of a Hazardous Event Occurring x Magnitude of the Consequence

The total risk is thus a summation of the all the individual risks applicable.

AROS 3D calculates the risks for specific hazardous material releases and other standard type risks.

Hazardous Materials Release Risks

The release of a hazardous material on a site may result multiple consequences and thus multiple risks to personnel.

AROS 3D calculates the following hazardous material release risks:

• Immediate risk (personnel subjected to harmful consequences local to hazardous material release),
• Mustering risk (personnel subjected to harmful consequences whilst escaping to a safer place following a hazardous material release),
• Temporary refuge impairment risk (personnel subjected to harmful consequences whilst located in a safer place on site subjected hazardous material release),
• Evacuation risks (personnel subjected to harmful consequences whilst evacuating a site that is no longer deemed safe).

Standard Risks

In addition to the risks inherent to the release of hazardous materials there may also be additional risks related the specifics of a site with regard to its location, environment, operating strategy, design limits etc..

AROS 3D calculates the following hazardous material release risks:

• Fixed wing transport,
• Helicopter,
• Occupational,
• Structural,
• Seismic,
• Ship collisions,
• Turbine failure.

Risk Calculation

AROS 3D undertakes risk calculations based upon physical 3 dimensional layout, hazardous material release characteristics, safety systems activation, personnel distribution, escalation rule-sets and standard risks. Examples of the calculated output data is shown in the screen shots below.

Immediate risk.

Muster risk.

Transport risk.

AROS 3D has the advanced functionality to display charts of the calculated data as per the users requirements.The chart below shows the area specific individual risk per annum and the contribution from each of the hazardous material releases.

AROS 3D Software Features

Advanced functionality for displaying and analysing calculated data:

• charting of of individual or multiple parameters;
• ability to copy calculated data and / or charts to external software for further analysis if required;
• display calculation used to determine output data;
• additional features supported such as time to temporary refuge impairment, numbers of trapped personnel etc.;
• highlighting effectiveness of barriers;

AROS 3D is designed to eliminate the "black box" type approaches of hidden calculations and instead includes functionality for open interrogation of calculated data and if necessary exporting of data for external analysis.