BowTie Theory
Transcript of BowTie Theory
MISSION ANALYSIS &
RISK ASSESSMENT
Objectives
To list down the safety culture adopted by industry
To discuss The Basic management System
To understand Bow tie Process
To discuss the term “ALARP”
Safety Culture
Generative:
Proactive:
Calculative:
Reactive:
Pathological:
“We do things well, or we don’t do them”
“We work on the problems we still find”
“We have systems in place to manage all
hazards”
“Risk Management is important, we do a lot every time we have an
incident”
“ Who cares as long as we not caught”
Management System
Risk Evaluation and Management
Not separate but integral
Risk Evaluation and Management
Stakeholders/Clients Demand Expectations about risks have
change
Organisations to have their risk management on track.
Bow Tie helps you to organise your risk management in a way that is easily explained
Introduction
Bow Tie is a generic methodology that can be of value to analyse and manage all kinds of major risks
Bow Tie originated in the area of Health, Safety and Environtment (HSE) and has proved it’s value for all kind of business risks.
Risk Management Process
Bow Tie Process
Risk
Identify risks (What do we mean by risk?)
Risk = Probability x Consequence
Risk Matrix
Bow Tie
Step 1 – Identify the Hazard
Hazards
EXAMPLE?
Step 2 – Identify The Top Event
Top Event
EXAMPLES:
oLoss of ContainmentoStructural FailureoDropped ObjectoLoss of ControloElectrical Shock
oFalls to same LeveloFalls to Lower LeveloOxygen DeficiencyoLoss of Separation
oContact
Step 3 – Identify threats
THREAT
EXAMPLES
Thermal – High TemperatureChemical – corrosionBiological -Bacteria/Marine growthRadiation – UltravioletKinetic – FatigueElectrical – High VoltageEnvironmental Condition – poor visibility/storm/eathquakeUncertainty – design unknownsHuman Factor - incompetence
Step 4 – Identify consequences
CONSEQUENCE
Step 5 – Identify Threat Barriers
Threat Barriers
Threat Barriers
Step 6. Identify Recovery Measures
Recovery Measures
Step 7. Identify Escalation Factors“How might controls fail?”, “How might their effectiveness be
undermined?”
Step 8. Identify Escalation Factor
Controls “How might controls fail?”,
“How might their effectiveness be undermined?”
Step 8. Identify Escalation Factor Controls
“How do we make sure controls don’t fail?”
Escalation Factor Controls
ALARP What is ALARP?
Bow Tie
Risk Management
Effective Risk Management is only possible if PEOPLE are assigned responsibilities for CONTROLS
Risk Management
You cannot ‘buy’ risk management, you cannot delegate risk
management to a ‘group over there’, it has to become part and parcel of
your overall culture