Pump cavitation, vibration, bearings and seals
Use this when pump cavitation, vibration, bearings and seals is observed but the cause remains unclear. The diagnostic checks measurement and sampling, operating changes, issue location, and key evidence before suggesting likely causes and the next useful check.
First time here? Start with this
You do not need every data point before you begin
The system asks one discriminating question at a time and updates the candidate causes on the right. Answer from current facts; choose unknown or defer a question when the evidence is not available.
- 1
Confirm the issue
Check whether the symptom is reproducible and whether the measurement or observation is reliable.
- 2
Narrow the causes
Continue through operating changes, issue location, and available inspection results.
- 3
Read the live result
Candidate causes, support, counter-evidence, conflicts, and next actions update as you answer.
This tool analyzes information you already have. It does not insert a safety screen or use safety status to stop the diagnosis. If an alarm, leak, or injury is happening now, follow the site emergency procedure directly.
Automatic troubleshooting · Selections are not uploaded
Only one question is shown at a time. Answer from current facts or defer an unknown item. Possible causes and next checks update on the right as you answer.
- 1Data validity
- 2Operating changes
- 3Issue location
- 4Further confirmation
Question progress
0/34
- Answered
- 0
- To confirm
- 34
- Clues found
- 0
Load a test scenario
Next question
Phase 1 · Data validity
What is the identity of the pump/motor/bearing/seal/coupling, speed, impeller, and mounting type?
The system asks the question most useful for separating possible causes. Unknown or deferred items are not treated as the opposite conclusion.
I have more test or inspection resultsOptionalAdd laboratory analysis, normalized calculations, or checks completed by trained personnel when available. These fields are optional.
View rule sources (15)Standards, regulations, OEM material, and peer-reviewed literature used to audit the diagnostic logic. You do not need to read them before starting.
Each rule cites material directly relevant to its judgment. Current OEM and site procedures remain controlling.
- A-industry-standard-current · Hydraulic Institute · 2024ANSI/HI 9.6.1:2024 NPSH Margin Update
- A-industry-standard-current · Hydraulic Institute · 2022ANSI/HI 9.6.4 Rotodynamic Pumps for Vibration Measurements and Allowable Values
- A-industry-standard-current · Hydraulic Institute · 2022ANSI/HI 9.6.5 Rotodynamic Pumps Guidelines for Condition Monitoring
- A-industry-standard-definitions · Hydraulic Institute · 2026Pump and Pump System Definitions
- A-international-standard · ISO · 2009ISO 10816-7:2009 Rotodynamic Pump Vibration
- A-international-standard · ISO · 2002ISO 13373-1:2002 Vibration Condition Monitoring — General Procedures
- A-international-standard · ISO · 2016ISO 13373-2:2016 Vibration Data Processing and Analysis
- A-international-standard · ISO · 2017ISO 15243:2017 Rolling Bearing Damage and Failures
- A-international-standard · ISO · 2004ISO 21049:2004 Pump Shaft Sealing Systems
- A-government-tip-sheet · US Department of Energy · 2005Maintain Pumping Systems Effectively
- A-government-technical-sourcebook · US Department of Energy · 2006Improving Pumping System Performance
- A-government-engineering-manual · US Army Corps of Engineers · 2020EM 1110-2-3105 Mechanical and Electrical Design of Pumping Stations
- A-government-safety · US OSHA · 2026Control of Hazardous Energy (Lockout/Tagout)
- B-oem-bearing-guide · SKF · 2025Bearing Damage and Failure Analysis
- A-government-application-guidance · US EPA · 2000Wastewater Technology Fact Sheet: In-Plant Pump Stations