Service · Predictive Vibration
Vibration Analysis ISO 10816
Vibration FFT analysis under ISO 10816-2 + ISO 20816 + API 670 for industrial generators + turbomachinery 1-700 MVA. Zone A/B/C/D evaluation, modal identification, bearing diagnosis, dynamic balance assessment, fault root cause.
Service overview
Vibration Analysis ISO 10816 — what we deliver
Vibration analysis is the most cost-effective predictive diagnostic for rotating industrial machinery. Under ISO 10816-2 framework, vibration velocity RMS measurements classify equipment into zones (A new / B acceptable / C tolerable transient / D unacceptable). Beyond classification, FFT spectral analysis identifies specific fault modes: unbalance (1×RPM), misalignment (2×RPM), bearing degradation (high-frequency), looseness (multiple harmonics), resonance (modal frequencies).
Workshop capabilities
Technical scope
- Vibration RMS measurement under ISO 10816-2 + ISO 20816 (zones A/B/C/D)
- FFT spectral analysis with order tracking + cascade plots
- Modal identification via bump test for resonance detection (ISO 7626)
- Bearing diagnosis under API 670 (envelope demodulation, kurtosis, crest factor)
- Dynamic balance assessment G2.5 ISO 21940 with corrective recommendation
- Operating Deflection Shape (ODS) analysis for casing deformation issues
- Trend analysis + degradation forecasting from historical data
- Documented technical report with corrective action plan
Applications
Where we apply this service
Pre-overhaul baseline characterization
Establish vibration baseline before major overhaul to identify worn components requiring intervention vs healthy components.
Post-overhaul commissioning verification
Validate that overhaul restored vibration to Zone A under ISO 10816-2 — required for commissioning sign-off.
Predictive monitoring program
Periodic vibration measurement (monthly to quarterly) for trend analysis + early degradation detection.
Fault diagnosis on operating asset
Root cause identification when operator reports abnormal vibration: unbalance, misalignment, bearing wear, looseness, resonance.
Frequently asked questions
What's the difference between ISO 10816 and ISO 20816?
ISO 10816 (2009-2017) was the original international standard for vibration evaluation of machinery operating in steady-state. ISO 20816 (2016+) is the modernized replacement that consolidates ISO 10816 + ISO 13373 + adds machine class definitions. Both standards remain in use — most industrial facilities still reference ISO 10816 as primary specification. The vibration limits + Zone A/B/C/D framework are equivalent between standards. New installations 2024+ typically use ISO 20816 in specifications.
What does Zone C vibration mean?
Zone C under ISO 10816-2 = 'tolerable for limited time' — vibration RMS exceeds normal operating limits (Zone B) but below unacceptable threshold (Zone D). Operating in Zone C is permitted for short periods while investigating root cause and planning corrective action. Continued Zone C operation leads to accelerated wear + eventual failure. Recommended response: vibration FFT analysis to identify cause (unbalance / misalignment / bearing / resonance) + corrective intervention within 1-3 months.
Can vibration analysis predict bearing failure on industrial generators?
Yes — modern vibration analysis under API 670 with envelope demodulation + spectral analysis detects bearing degradation 3-6 months before catastrophic failure. Key indicators: appearance of bearing characteristic frequencies (BPFI, BPFO, BSF, FTF), increase in high-frequency vibration > 1 kHz, increase in kurtosis + crest factor of vibration signal. Combined with oil tribology analysis (particles + delta-T), bearing failure prediction accuracy exceeds 85%.
Other services
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CFE LAPEM W4200-12 · ISO 9001:2015 · IEEE / IEC