The Professional Incident Investigation
& Problem-Solving Method

Kelvin TOP-SET Courses

Learn to conduct effective incident investigations

Kelvin TOP-SET Investigation Services

On-demand professional investigation services

Kelvin TOP-SET Software

Explore our breakthrough investigation software

Kelvin TOP-SET teaches incident investigation, root cause analysis and problem solving to make effective recommendations, prevent recurrence and improve performance.

Kelvin TOP-SET is a comprehensive and effective incident investigation method that is straightforward to use. Since 1986, it has been helping companies in most industrial and business sectors achieve consistent results in over 50 countries.

Clients increasingly use TOP-SET as a problem-solving tool to improve safety, quality, business and environmental performance.

Some TOP-SET Clients:

  • Great course with truly professional teachers. I'd recommend it to all my network with certain seniority in incident investigations and problem-solving.

Our Frequently Asked Questions

If you’re considering incident investigation training for yourself or your team, it’s natural to have questions about what to expect and who it’s suitable for. This FAQ guide brings together the most common questions we hear from organisations across the many sectors...

The ‘5 Whys’ of Root Cause Analysis

There are many different systems for Root Cause Analysis (RCA), and we are sometimes asked how the Kelvin TOP-SET RCA system compares. In this post, we’ll take a look at the ‘5 Whys’ of Root Cause Analysis. What is the 5 Whys of Root Cause Analysis? The 5...

Scope of Investigation: The Importance of Setting Limitations

When an incident happens in the workplace, the main objective is to understand why it happened by identifying the immediate, underlying and root causes and putting measures in place to prevent it from reoccurring. To achieve this, incident investigations must be...

Christmas Opening Hours

The Kelvin TOP-SET offices will be closed over the Christmas period. The US office is open from 2nd January, and the UK office from 5th January.  We wish all of our clients a wonderful festive period and look forward to working with you in 2026.   

The Most Dangerous Jobs in the World & How we can Make them Safer

Every profession carries a certain level of risk, but certain jobs expose workers to dangers far beyond typical workplace hazards. These dangerous roles demand immense skill, bravery, and a constant awareness of conditions that could become life threatening. Looking...

Fishbone Diagrams: What are they and how do they compare to TOP-SET?

In the field of incident investigation and root cause analysis, there are several methods and techniques available. One of the most well-known and widely used is the fishbone diagram. At Kelvin TOP-SET, we often receive questions from individuals and organisations...

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