Planning
Reliability Requirements
Turn product objectives into measurable reliability and lifetime requirements.
Purpose & Benefit
When This Activity Helps
Use at project initiation, when requirements are ambiguous or when a new application changes the reliability target. Clear acceptance criteria reduce disagreement at qualification and release.
Project Information
Typical Inputs
The scope is tailored to the available evidence. Useful inputs include:
- Intended function and definition of failure
- Service life, operating and storage conditions
- Customer requirements and available product evidence
Engineering Approach
How SPACEREL Supports Your Project
SPACEREL reviews the application, distinguishes reliability from availability and safety, and defines measurable targets with stated conditions. Reliability, confidence, sample population and acceptance criteria are connected to a practical evidence plan.
Documented Outcomes
Typical Deliverables
Deliverables are agreed before work starts and can include:
- Reliability requirements and acceptance criteria
- Assumptions, evidence gaps and verification matrix
- Recommended analysis and test activities
Reliability Toolkit
Related Calculators
Explore sample-size and duration trade-offs once the reliability and confidence targets are defined.
Methods & Evidence
Selected References
- IEC Technical Committee 56: Dependability
Select the applicable methods and requirements for the product and programme.
Project Context
Where This Activity Can Help
Explore the relevant lifecycle stages.