Chemical & Process Industries
Process-fluid ingress, high temperatures and continuous operation require attention to lubricant compatibility, oxidation and contamination pathways.
Chemical & Process Industries programmes should connect equipment criticality, credible failure modes, representative samples, routine and triggered tests, response ownership and maintenance feedback.
Design the programme around how the assets fail.
Chemical plants operate compressors, pumps, turbines, mixers and heat-transfer systems near aggressive process media. Sampling and laboratory handling must account for hazardous or reactive contamination.
Use this guide to scope an oil-analysis programme; then confirm equipment-specific limits, methods and safety controls with the laboratory, OEM and site engineering team.
What to test—and why.
Routine panels create comparable history. Triggered tests answer a focused question after a trend change, inspection finding or operating event.
| Equipment | Fluids | Primary risks | Routine tests | Triggered / advanced tests | Sampling approach |
|---|---|---|---|---|---|
| Process compressors | Mineral or synthetic compressor oil | Process-gas dilution, oxidation, deposits, bearing wear | kinematic viscosity, acid number, ftir oil condition monitoring | elemental analysis icp oes, karl fischer water, analytical ferrography | Use an approved active point and disclose hazardous process contamination to the laboratory. |
| Pumps, mixers and gear drives | Bearing/circulating oil, gear oil, grease | Seal leakage, wear, water/process ingress | elemental analysis icp oes, kinematic viscosity, karl fischer water | pq index, analytical ferrography, particle count | Sample the bearing drain or gearbox circulation path consistently. |
| Heat-transfer systems | Thermic fluid | Thermal cracking, oxidation, low boilers, carbon deposits | kinematic viscosity, acid number, flash point | ftir oil condition monitoring, distillation | Sample at operating equilibrium using an engineered cooled sampling loop. |
Controls that make the data useful.
- 01Declare hazardous contaminants before shipment
- 02Trend heat-transfer fluids by both low- and high-boiling degradation
- 03Correlate seal failures with process ingress
- 04Integrate oil analysis with vibration and temperature
Decisions the programme should improve.
- 01Earlier seal and bearing intervention
- 02Safer laboratory handling
- 03Controlled heat-transfer-fluid replacement
- 04Improved process uptime
Build a closed evidence-to-action loop.
A test panel becomes a reliability programme only when the sample, interpretation, response and field outcome remain connected to the same asset and compartment.
| Stage | Control | Evidence created | Decision |
|---|---|---|---|
| 1 · Baseline | Confirm asset, compartment, fluid, method, point and operating state | Comparable new or stable in-service reference | Define normal variability and initial interval |
| 2 · Routine surveillance | Collect at a fixed risk-based interval from the documented point | Trend of fluid condition, contamination and wear | Continue, monitor or request focused confirmation |
| 3 · Exception diagnosis | Use mechanism-specific tests, secondary points, filters and companion technologies | Independent evidence for or against the failure hypothesis | Protect, inspect, correct or revise the hypothesis |
| 4 · Verification | Repeat comparable evidence after maintenance | Post-action condition and rate of change | Close the work order or escalate |
| 5 · Programme learning | Record inspection findings, false positives and missed detections | Asset-specific failure signatures and improved rules | Change point, panel, interval, limit or procedure |
Translate severity into a defined response.
These are workflow classes—not universal pass/fail limits. Asset consequence, rate of change and site safety procedures control the urgency.
| Class | Typical evidence pattern | Minimum review | Possible response |
|---|---|---|---|
| Stable / Normal | Comparable results remain within the justified baseline and no corroborating distress is present | Confirm route and context are complete | Continue the planned interval |
| Monitor | A small deviation, unusual rate of change or incomplete contextual explanation | Check sample, top-up, maintenance and companion indicators | Clarify data, add one focused test or shorten the interval |
| Abnormal / Investigate | Unsatisfactory fluid, contamination or wear evidence with a credible developing mechanism | Confirm promptly using independent evidence | Inspect, control the source and plan corrective work |
| Critical / Urgent review | Rapid, severe or corroborated change with material equipment or safety consequence | Immediate qualified operational and engineering review | Apply site procedures; protect people and equipment before diagnosis continues |