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Incident investigation and lessons learned
An incident investigation looks for the organisational causes that made the event possible. Conducted with method, it produces an action plan protecting every comparable workstation, not only the one where the event occurred.
Gather the facts before any interpretation
The first hour decides the quality of the investigation: you record what is observable — positions, equipment states, the time sequence, the conditions of the moment — before the site is tidied. Interviews then cover the sequence of events, never responsibilities. That separation is what allows witnesses to describe what they actually did, and what makes the causal tree usable.
- A record of observable facts, made before the site is restored
- A precise timeline, rebuilt with the witnesses
- Interviews focused on how operations unfolded
- A causal tree reaching back to organisational decisions
- An action plan with an owner and a due date on every line
The four stages of an investigation
- 01
Secure and record
The site is made safe, then its state is recorded and dated. That record conditions everything else.
- 02
Rebuild the sequence
Each fact takes its place on a timeline. Differences between the accounts gathered point to what needs deeper work.
- 03
Build the causal tree
You climb from fact to fact up to organisational decisions. That is where durable actions are found.
- 04
Circulate the lessons learned
The action plan applies to every comparable workstation, and circulating it serves as training for the teams.
The near miss, prevention's raw material
A near miss describes exactly the same chain of events as an incident, except that the outcome was favourable. It is therefore analysed with the same method and yields the same information, in calmer conditions. An organisation that collects many of them holds considerable prevention material: that is why event reporting is among the leading indicators supervision tracks monthly.
- taught hours on investigation
- 160
- hours on event reporting
- 100
- hours on safety culture
- 50
Emergency plan, drills, causal tree, lessons learned.
Block of the officer title: safety talks, induction, near misses.
Leadership, supervisor involvement, measuring culture.
Questions about the investigation
Who conducts the investigation?
A small group bringing together line supervision, the safety function and a staff representative. That mixed make-up provides the three viewpoints needed: the real gesture, the applicable rule and the team's experience.
Within what timeframe?
Fact gathering happens within hours, analysis within days. The closer the investigation is to the event, the more precise the recollections and the more intact the physical traces.
How should lessons learned be circulated?
By describing the chain of facts and the organisational decisions to correct, which makes the document useful at every comparable workstation. Circulation focused on the mechanism serves prevention and feeds safety talks directly.
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