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Risk Assessment > Traffic Organization and Perturbation AnalyZer (TOPAZ)

ABRM Analytic Blunder Risk Model AT (symbol) Risk Barrier Analysis Bow - Tie Analysis Change Analysis Continuous Safety Sampling Methodology (CSSM) Cooperative Evaluation Event Tree Analysis Expert Judgments Failure Modes and Effects Analysis Fault Tree Analysis FaultrEASE Function Flow Diagram Hazard and Operability Analysis (HAZOP) Human Reliability Event Tree Analysis Interface Analysis Job Hazard Analysis (JHA) Logic Diagram Management Oversight Risk Tree (MORT) Markov Latent Effects Tool for Organizational and Operational Safety Assessment Multiattribute Utility Theory Multilinear Events Sequencing Technology (MES) Pareto Chart Preliminary Hazard Analysis Probabilistic Risk Assessment (PRA) Reduced Aircraft Separation Risk Analysis Model Relex Human Factors Risk Analysis Safety and Risk Evaluation using Bayesian Nets (SERENE) Scenario Process Tool Subjective Expected Utility (SEU) Table Top Analysis TapRooT® Technique Of Operations Review (TOR) Technique to Estimate Operator’s Errors (TESEO) The "What If" Tool Traffic Organization and Perturbation AnalyZer (TOPAZ) WinNUPRA Limit 3 tools for comparision

Traffic Organization and Perturbation AnalyZer (TOPAZ) Description : TOPAZ is a safety assessment methodology and tool set for evaluation of existing or newly developed ATM operational concepts. TOPAZ accounts for both the nominal and non-nominal events and dynamics of ATM operations, including interactions between human operators, technical systems and procedures. TOPAZ facilitates quantitative safety assessment and provides safe spacing criticality feedback to developers. The TOPAZ risk assessment methodology is based on a stochastic modeling approach towards risk assessment. The assessment cycle consists of four sequential stages: 1) Identification of operation and hazards. Information about nominal and non-nominal behavior of the ATM concept or procedure is gathered, through hazard identification sessions with a variety of experts. For a new operation it is common practice to also perform a qualitative hazard analysis. 2) Mathematical modeling. A stochastic dynamical model of the operation is developed that incorporates both the nominal and non-nominal events of the operation. All model assumptions are specified. 3) Accident risk assessment. A multi-step procedure is followed to quantify the accident risk. In addition, a bias and uncertainty assessment for all model parameters and model assumptions is performed. 4) Feedback to operational experts. The results of the quantitative safety assessment are fed back to and discussed with the designers and operational experts, who can use the results to redesign the proposed ATM design, if necessary. (Source: GAIN Guide to Methods & Tools for Safety Analysis in Air Traffic Management) Advantages : TOPAZ is very sophisticated and requires specialists to apply it. Disadvantages : Contact : Henk.A.P. Blom, PhD, National Aerospace Laboratory NLR, Postbus 90502, 1006, BM Amsterdam, The Netherlands., NLR, +31 20 5113544, Email: blom@nlr Tool Type : References : GAIN Guide to Methods & Tools for Safety Analysis in Air Traffic Management More Info:  Journal : Proceedings : Reports : Books :