Week 2 Flashcards
Hazard vs Risk
Hazard
A hazard is something with the potential to cause harm
(e.g. when crossing a road cars are a hazard)
Risk
= likelihood x consequences
-> something additional (heavy machine is moving around) -> risk a person is in front of the machine, the driver can’t see the person
is the likelihood (probability) of harm taking place
(e.g. when crossing a highway, the risk of an accident) /
Types of hazard
- physical hazards -> e.g. someone falls form a roof
- chemical hazards -> substances
- biological hazards -> substances
- psychological hazards -> hunman are getting sick because of stress
- environmental hazards
Hazard of a container ship
- Weather
- collision
- human error
- technical issue
- grownding
Formula risk
Risk = likelihood x consequences
Hazard Switzerland
- Cyber
- Energy crisis
- Business interruption (e.g. Gotthard tunnel, war)
The impact of the energy crisis is a new risk entry and a core concern for firms.
Hazard Germany
- Business interruption -> supply chain disruption
- Cyber
- Energy crisis
Business interruption remains the top risk, while firms are also worried about the energy crisis.
Hazard Australia
- Natural catastrophe
- Business interruption
- Climate change
Natural catastrophe is the new top risk, drivne by events such as flooding, which resultetd in the country’s costliest-ever natural catastrophe
Classifaction
Diversifiable Risk
* fire / flooding -> diversifiable
Undiversifiable Risk (e.g. inflation)
Classification of Risk
Pure risk vs Speculative Risk
Pure risk
* can only be negative (property risk)
* Property risk, people risk
Speculative risk
* coud be a positive and negative risk
* economic / market
Difference between
* Hazard riks
* Operational risk
* Financial risk
* Strategic risk
Hazard risk
Arises from property, liability or peronnel losss exposure
* fire, never positive
Operational risk
Arises form people, processe, systems or controls
* cyber attack
Financial risk
Arises form the effect of market forces on financial assets or liabilities
* change in electricity prices -> could be positive and negative
Strategic risk
Arises form trends in the economy and socitey
* missing a trend -> could be positive, only a hype
Analytical Tools and Statistics in Risk Management
Measuring the effectiveness of risk prevention measures
We rarely can link safety decisions to individuals / specific accidents, However, we often can get aggregate results
-> Seatbelts saved an estimated 14,955 lives in the United States in 2017
Except when we can’t:
Antilock brakes (ABS) have zero net effect on fatal crashes, people think they can drive faster because the breaks are better
-> Risk compensation theory
And sometimes the data are misleading:
since the introduction of steel helmets the number of head injuries has increased considerably … because before their introduction many of
those injured were killed outright
–> are we looking at the right thing
Taxonomy of Uncertainty
Taxonomy of Uncertainty
The known unknowns -> Aleatory uncertainty
describes the probability of future outcomes
determined by a known random process
(the known unknowns)
Unkown unknowns -> epistemic uncertainty
describes uncertainty regarding statements where causality and fundamental principles are only partially known
Decision Tree
Structuring decisions allows us
to:
- Calculate the expected value of decisions
- Understand and combine the implicit assumptions of experts
- Calculate the value of perfect and imperfect information
- Update our state of knowledge as additional
information becomes available
Wir rechnen geringste Kosten aus und höchste Kosten -> bei Wahrscheinlichkeit XY
-> Differenz = Value of Information, dass wir sicher sind
Bow tie analysis
- what happens when we lost control and the hazard is releast -> what will happen then
- left side: threats -> how can we prevent this?
- rigt side: Cosequences -> how do we limit the extend of the consequences?
Delphi method
we ask different experts one questions, then we write a factsheet and distribute this to everyone, but they don’t know which statement is from wich person -> Anonimity to avoid group dynamics