Why this step matters
Begin with a precise boundary and decision.
This step turns a broad concern into a defined technical question. It establishes what is included, what is excluded, which operating conditions matter, and how the result will be used.
Confirm the people, records, access, safety limits, asset context, and decision criteria before work begins.
Applied to More sensors do not automatically mean more insight
- Technical focus: Cover credible failure modes
- Where it applies: Critical rotating equipment
- Expected evidence: What failure mode does each sensor cover?
- Working principle: A sensor without a response owner is a data source, not a reliability system.
What happens in practice
- 01Prepare the context
Confirm the asset, people, records, operating state, and boundaries needed to address cover credible failure modes.
- 02Make the work traceable
Confirm the people, records, access, safety limits, asset context, and decision criteria before work begins.
- 03Confirm the handoff
Check that the result can support what failure mode does each sensor cover? and that unresolved uncertainty is visible.
A sample of how this step may unfold
An engineer is using this guidance to check whether the available evidence is strong enough to support a recommendation. Before any work begins, the team identifies “Cover credible failure modes” as the immediate focus. It agrees that the step should produce what failure mode does each sensor cover?, and it records what is outside the present scope. The example closes with the principle that a sensor without a response owner is a data source, not a reliability system.
This is an educational example, not a description of a specific client engagement or a guaranteed result.Evidence to expect
What should be visible before moving on.
- A written scope boundary
- The operating decision to support
- Known asset and process context
- Access, safety, and timing constraints
Common mistake
What weakens this step.
Starting with a favorite instrument, test, course, or platform before defining the decision it must support.
What good looks like
- Everyone can state the same technical question
- The boundary and exclusions are visible
- The expected output will support a real decision
Where this step ends
A clear record, a clear limit, and a clear next move.
A good closeout leaves the next person with a practical explanation of what was done, what the evidence supports, what remains uncertain, and what should happen next. For this capability, the working principle remains: A sensor without a response owner is a data source, not a reliability system.