Reliability engineering rarely happens in isolation. More often, it sits within a project environment shaped by cost, schedule, scope and competing priorities.
In many projects, reliability engineering can be seen primarily as a quantitative exercise that is applied once evidence is needed to validate a design. By then, the opportunity to influence architecture, technology choices, or support concepts may be limited.
The greatest impact of reliability engineering often comes much earlier, through structured questioning and risk-informed thinking. Helping teams recognise that reliability engineering influences design and decision-making throughout the project, not just when evidence is required, is part of the reliability engineer’s contribution within a project environment.
From a project perspective, timing matters. Decisions made at concept stage lock in much of the system’s future reliability performance. At this stage, relatively small changes can significantly reduce long-term risk at comparatively low cost.
As the project progresses, options narrow. Once designs are frozen and schedules committed, reliability input often shifts from shaping outcomes to explaining consequences. The analysis may still be rigorous, but its ability to influence decisions is reduced.
Project plans, Gantt charts and critical paths may track reliability testing, growth activities and validation tasks. But reliability cannot be compressed into a late phase without consequence. When reliability work is deferred, the consequences tend to surface later, often at higher cost and with fewer options available.
This is where trade-offs become visible. Projects are often judged on time and cost performance, while reliability is realised in service, sometimes years later. The reliability engineer therefore operates at the intersection of immediate project objectives and enduring system performance.
Working effectively within projects is less about owning the schedule and more about exercising judgement and influence:
- Knowing when reliability input will have the most leverage.
- Communicating risk in terms project teams can act on.
- Being clear about assumptions and uncertainties.
- Ensuring reliability activities are planned early enough to matter.
The CRE Body of Knowledge reflects this expectation. Reliability engineers not only perform analysis, they are also technical leaders operating within project teams, helping balance immediate delivery pressures with through-life performance.
A project can be delivered “successfully” and still struggle in service if reliability risks are accepted without full understanding. Reliability engineering helps make those consequences visible while there is still time to respond.
Next up…
Reliability Bites #11: Reliability terminology – what trips people up.
Leave a Reply