System Analysis
Reliability Allocation
Distribute system reliability objectives across subsystems with traceable assumptions.
Purpose & Benefit
When This Activity Helps
Use when developing a system architecture or when a subsystem change threatens the overall reliability target. Allocation gives design teams a shared basis for prioritising engineering effort.
Project Information
Typical Inputs
The scope is tailored to the available evidence. Useful inputs include:
- System target and operating duration
- Functional architecture and dependencies
- Subsystem constraints and available failure data
Engineering Approach
How SPACEREL Supports Your Project
SPACEREL reviews the system structure and allocates targets using an approach appropriate to the architecture and available evidence. Allocations are checked for feasibility and revised as the design matures.
Documented Outcomes
Typical Deliverables
Deliverables are agreed before work starts and can include:
- Subsystem reliability targets
- Allocation method, dependencies and assumptions
- Prioritised recommendations for target shortfalls
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.