Posted By Hilal KINLI
Andy,
I think firstly we need to agree in the terminology of hazard and risk.
As you now, there are many definitions in many literature.
I think we may select OHSAS 18001:2007 definitions which is an international standard as an example for discussion.
In that standard, hazard is defined as:
Source, situation, or act with a potential for harm in terms of human injury or ill health or a combination of these
I agree with this definition. But I also prefer to identify "potential for harm" as "potential for risk". (I will explain the reason below)
Risk is defined as;
Combination of likelihood of an occurrence of a hazardous event or exposure(s) and the severity of injury or ill health that can be caused by the event or exposure.
I do not agree partly with this definition. In my view, "risk is probable outcome (s) of a hazard which could lead directly or after a sequential events to an injury or ilness."
Forexample, if somebody is working at height, working at height should be defined as hazard, because there is a probable outcome as fall risk. This is primary level of risk. If a person falls, then there is a probable outcome of this primary level risk as injury or death which I call as secondary level risk.
This was an example what I mean from sequential effects.
We can increase the examples for many situations.
In my view, after identifying the risk as probable outcome (s) of a hazard, we may say that magnitude or significance level of the risk depends on likelihood, severity, frequency, etc.etc. depending on the risk ratiing methodology used. (Risk rating methodologies are another subject for discussion.)
If we identify risk as, just as combination of likelihood and severity of a probable outcome, it is just flying object for me. No meaning.
Because in many literature and in our daily life, we use risk terminology for a probable outcome of an hazard. e.g. fall risk, exposure risk, electrocution risk, radiation risk, back injury risk, etc.
What I mean is that, risk has a name in our daily life and in our literature. Risk terminology is not used just as a number, or magnitude, or a significance level.
So, why don't we prefer to use that conventional name for risk and then define the magnitude of that risk, instead of identifying the risk as a flying object?
Agree or not?
Best wishes
Hilal
think the problem here is that risk is only an abstract concept rather than the tangible result of an equation. The idea that risk = severity x likelihood (or any other equation) helps us understand what it means, but it can't actually be calculated.
A risk assessment is only a means to an end, and not an end itself. Unfortunately people tend to dive into doing a risk assessment and fail to see the bigger picture. Actually assessment is part of risk management, and if you follow it through properly it is actually only a small part of the program.
Managing risks involves:
1. Identifying hazards - people often fail to list all the hazards, and so their assessments will inevitably be flawed.
2. Identifying risk controls
3. Assessing risks - people often assess risks associated with individual hazards which is fine, but you also need to assess the overall risk - a simple rating is usually more than enough
4. Considering whether the risks are as low as reasonably practicable (ALARP)
5. Specifying additional controls if required
6. Implementation of the risk management program
In my opinion step 4 is the critical one. It is achieved by answering two questions:
a) What additional controls could be put in place to reduce the risk?
b) For those additional controls that you are planning to NOT implement, why? This argument will either be that the risk reduction is minimal, it will result in an unacceptable transfer of risk or the cost is grossly disproportionate
To answer these questions we need to consider the hierarchy of control because this tells us how reliable controls are likely to be.
So my opinion is that how you rate risks is relatively unimportant as long as you are consistent. As long as you can demonstrate you know what your highest risks are and that you are doing something about them is enough