🎵 RTT Facilities — Harmonics Scoring Rubric
Systemic Degradation & Resonance Risk
This document defines the Facilities‑level harmonics scoring framework used to identify, classify, and govern degradation caused by oscillatory, resonant, or frequency‑driven stress across facilities systems.
It is grounded in the RTT Facilities Playbook and applies across all Facilities domains, including RTT‑AGERI.
1. Purpose#
Harmonics are early indicators of systemic stress.
The purpose of this rubric is to:
- Detect non‑catastrophic degradation before failure
- Identify resonance‑driven wear and instability
- Inform modernization timing and prioritization
- Prevent cascading failures amplified by oscillatory stress
- Provide a shared harmonics vocabulary across domains
Domain‑specific initiatives extend this rubric with asset‑specific measurement detail.
2. Harmonics Definition#
Harmonics refer to oscillatory, resonant, or frequency‑based behaviors that:
- Accelerate material fatigue
- Destabilize system performance
- Amplify environmental or operational stress
- Degrade reliability without immediate failure
Harmonics may be electrical, mechanical, thermal, or operational in nature.
3. Scoring Scale#
Facilities harmonics are scored on a 0–4 scale:
| Score | Classification | Description |
|---|---|---|
| 0 | None | No detectable harmonic stress |
| 1 | Low | Minor oscillation within tolerance |
| 2 | Moderate | Persistent resonance causing measurable wear |
| 3 | High | Destabilizing harmonics accelerating degradation |
| 4 | Critical | Harmonics likely to trigger failure or propagation |
Scores reflect trend and persistence, not single measurements.
4. Assessment Criteria#
Harmonics scoring considers:
- Frequency and amplitude of oscillation
- Duration and persistence
- Interaction with environmental stressors
- Impact on adjacent systems or assets
- Historical correlation with failure events
Measurements may be quantitative or qualitative depending on asset class.
5. Stress Amplifiers#
Harmonics severity increases under:
- Aging or degraded materials
- Climate stress (heat, wind, storms)
- Load variability
- Deferred maintenance
- Poor grounding or stabilization
- Cross‑system coupling
Amplifiers are explicitly noted during scoring.
6. Governance Thresholds#
Harmonics scores trigger governance actions:
| Score | Governance Response |
|---|---|
| 0–1 | Monitor |
| 2 | Preventive intervention review |
| 3 | Modernization prioritization |
| 4 | Immediate escalation and intervention |
Thresholds may be refined by domain‑specific initiatives.
7. Integration with Other Frameworks#
Harmonics scoring integrates with:
- Drift scoring
- Propagation modeling
- Modernization cycle matrix
- Intervention playbook
- Capital and audit integration
Harmonics are treated as leading indicators, not secondary metrics.
8. Relationship to Domain‑Specific Rubrics#
Domain initiatives (e.g., RTT‑AGERI):
- Extend this rubric with asset‑specific metrics
- Define measurement techniques and tolerances
- Map harmonics scores to domain‑specific interventions
They do not redefine the scoring scale or governance thresholds.
9. Canonical Status#
This document is canonical.
All Facilities domains must reference this rubric when assessing harmonics‑driven risk.