Source-bound synthesis
How documented cement-plant reliability cases connect detection, diagnosis, intervention, and verification.
Direct answer
The public cases support condition monitoring as a decision system, not a sensor purchase. Value appears when a detectable change leads to a defensible diagnosis, a planned intervention, and post-work verification; reported vendor or plant results do not establish the same detection window or savings elsewhere.
Cross-case findings
The evidence spans vibration, lubrication, drive, fan, and bearing contexts with different failure mechanisms.
Trend interpretation depends on operating state, baseline quality, measurement location, and the work process that follows an alert.
The most transferable pattern is the closed loop from detection through verified restoration, not a universal threshold.
Transfer limitations
Underlying evidence
Holcim Slovensko · Rohoznik cement plant · 2003-2005
Supplier reports bearing replacement interval on main-kiln fans increased to at least 30 months from less than one year.
Tanga Cement Company · Simba Cement, Tanga · 2004-2010
Supplier reports rotary-kiln availability rose from below 83% in 2004 to above 96% in 2010.
Ceskomoravsky Cement · Radotin cement plant · reported 2021
Plant and supplier report earlier detection, less damage exposure, plannable repairs, and a long-term support contract; no quantified availability delta.
CalPortland Company · Oro Grande Cement Plant · 2022
EPA award profile reports 18% energy-efficiency improvement for the project.
CalPortland Company · Mojave Cement Plant · 2022
EPA award profile reports 40-50% fan-efficiency improvement.
Before transfer
Use these to frame qualified local review; do not treat them as a work sequence.
Is the signal repeatable under comparable load, speed, temperature, and process conditions?
What competing failure modes or process effects could explain the trend?
How will the team verify that the completed work changed the condition that triggered the decision?
