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DEFINITIONS

DEFINITIONS. OVERVIEW. HAZARD RISK PROBABILITY CONSEQUENCES ALARP (As Low As Reasonably Practical) SAFETY SAFETY PERFORMANCE INDICATORS SAFETY MANAGEMENT SYSTEM RISK ANALYSIS. Hazard (1).

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DEFINITIONS

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  1. DEFINITIONS

  2. OVERVIEW • HAZARD • RISK • PROBABILITY • CONSEQUENCES • ALARP (As Low As Reasonably Practical) • SAFETY • SAFETY PERFORMANCE INDICATORS • SAFETY MANAGEMENT SYSTEM • RISK ANALYSIS Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  3. Hazard (1) A scenario which, if it occurs, can have negative consequences to personnel, material (or the environment) Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  4. Hazard (2) Examples related to an aerodrome: • An aeroplane leaving the runway • Aeroplanes colliding on the runway • Aeroplanes colliding on the movement area • A vehicle colliding with an aeroplane • Aircrew being misled by confusing visual aids Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  5. Risk Risk = Probability * Consequences Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  6. Probability • Extremely improbable (<E-9) • Extremely Remote (E-7 – E-9) • Remote (E-5 – E-7) • Reasonable Probable (E-3 – E-5) • Frequent (E-3) • All per flight hour or per movement • Qualitative definitions also available Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  7. Consequences • Catastrophic • Hazardous • Major • Minor Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  8. Risk Tolerability Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  9. ALARP As Low As Reasonable Practical Risk Limit Risk Target Cost/Benefit Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  10. Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  11. Safety (1) Doc 9735: A condition in which the risk of harm and damage is limited to an acceptable level Air Navigation Commission: The state of freedom from unacceptable risk of injury to persons or damage to aircraft and property Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  12. Safety (2) Practical terms: All risk levels kept below the risk limit (ALARP figure) All risks are kept in the acceptable region (Risk Tolerability Matrix) Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  13. Safety Performance Indicators (1) • Necessary to monitor safety performance • Necessary to identify areas for improvement Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  14. Safety Performance Indicators (2) Fatal accidents per million movements not useful for individual aerodromes Incidents which have a severe potential Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  15. Safety Performance Indicators (3) • Movement Area Safety • Pavement Maintenance • Winter Operation • Electrical Services • RFF Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  16. Safety Management System (1) Doc 9774: Safety management system. A system for the management of safety at aerodromes including the organizational structure, responsibilities, procedures, processes and provisions for the implementation of aerodrome safety policies by an aerodrome operator, which provides for the control of safety at, and the safe use of, the aerodrome. Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  17. Safety Management System (2) • A systematic approach to safety • Safety shall be managed and controlled • An organisation • Procedures • A safety policy • Implementation Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  18. Risk Analysis (1) • A systematic approach for describing and/or calculating risk • Quantitative or Qualitative Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  19. Risk Analysis (2) • A description of problems and objectives • Selection of procedures, methods and data sources • Identification of undesired events • An analysis of causal factors and consequences • A description of risk • Mitigating measures • Presentation of results Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  20. Review Some central terms related to safety management Most are NOT found in Doc 9774 All are in the hand-out Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

  21. QUESTIONS? Aerodrome Safety Workshop - Almaty, Kazakhstan - 18 to 22 November2002

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