Necessary for a good Inspector:

Building and Construction - Knowledge of materials, methods, and the appropriate tools to construct objects, structures, and buildings
Product Inspection - Inspecting and evaluating the quality of products
Problem Identification - Identifying the nature of problems
Problem Sensitivity - The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem.
Judgment and Decision Making - Weighing the relative costs and benefits of a potential action
Writing - Communicating effectively with others in writing as indicated by the needs of the audience
Information Gathering - Knowing how to find information and identifying essential information
Active Listening - Listening to what other people are saying and asking questions as appropriate
Speaking - Talking to others to effectively convey information
Critical Thinking - Using logic and analysis to identify the strengths and weaknesses of different approaches

Qualifications