Section 48 of 105
46. Functional Decomposition and Allocation
Stable section ID: S05-CON-014-SECTION-48 · 14 content blocks
Every System05 system shall be decomposed into functions that can be assigned to identifiable assets, layers, Interfaces, and responsible authorities.
Functional decomposition shall identify:
- Required primary functions.
- Supporting functions.
- Safety and protective functions.
- Monitoring and diagnostic functions.
- Temporary assembly functions.
- Emergency and degraded-state functions.
- Maintenance and recovery functions.
- Future expansion functions.
Each function shall have an accountable owner and a defined implementation boundary. A function shall not remain unallocated merely because several assets contribute to its outcome.
Where a function is distributed across multiple assets, the required coordination, dependencies, timing, failure behavior, and verification method shall be defined.
Functional allocation shall minimize unnecessary coupling. Structural load transfer, utility distribution, data communication, environmental protection, and digital monitoring shall not become inseparable unless integration provides a justified and verified engineering benefit.
A change to the allocation of a safety- or compatibility-critical function shall be treated as an architectural change rather than an ordinary component substitution.