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:

“We do things well, or we don’t do them”

 Proactive:

“We work on the problems we still find”

 Calculative:  Reactive:  Pathological:

“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

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 Containment oStructural Failure oDropped Object oLoss of Control oElectrical Shock oFalls to same Level oFalls to Lower Level oOxygen Deficiency oLoss of Separation oContact

Step 3 – Identify threats

THREAT

EXAMPLES Thermal – High Temperature Chemical – corrosion Biological -Bacteria/Marine growth Radiation – Ultraviolet Kinetic – Fatigue Electrical – High Voltage Environmental Condition – poor visibility/storm/eathquake Uncertainty – design unknowns Human 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