Heat-exchanger duty, pressure drop, fouling and leakage
Use this when heat-exchanger duty, pressure drop, fouling and leakage 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
0/35
- Answered
- 0
- To confirm
- 35
- Clues found
- 0
Load a test scenario
Next question
Phase 1 · Data validity
What is the status of the exchanger's type, flow path, plate/tube count, area, materials, gaskets, and design data?
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 (17)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-international-standard-current · ISO · 2010ISO 12100:2010 Machinery risk assessment
- A-international-standard-current · ISO · 2007ISO 16528-1:2007 Boilers and pressure vessels — Performance requirements
- A-international-standard-current · ISO · 2019ISO 16812:2019 Shell-and-tube heat exchangers
- A-international-standard-current · ISO · 2005ISO 15547-1:2005 Plate-and-frame heat exchangers
- A-industry-performance-code-current · ASME · 2025ASME PTC 12.5-2000 (R2025) Single Phase Heat Exchangers
- A-industry-standard-current · TEMA · 2026TEMA Standards 11th Edition
- A-government-industry-guide · US DOE · 2003DOE Industrial Steam System Heat-Transfer Solutions
- A-oem-current · Alfa Laval · 2026Alfa Laval Plate Heat Exchanger Troubleshooting
- A-oem-current · Alfa Laval · 2025Alfa Laval Ten Top Tips for GPHE
- A-oem-current · Alfa Laval · 2026Alfa Laval Fusion-bonded PHE Instruction Manual
- A-oem-current · Kelvion · 2026Kelvion Heat Exchanger Leakage Test
- A-oem-engineering-reference · Spirax Sarco · 2026Spirax Sarco Heat Exchangers and Stall
- A-oem-engineering-reference · Spirax Sarco · 2026Spirax Sarco Steam Consumption of Heat Exchangers
- A-government-safety-current · US OSHA · 2026OSHA Control of Hazardous Energy
- A-government-method · US EPA · 2009EPA Method 334.0
- A-international-standard-current · ISO · 2023ISO 50006:2023 Energy performance indicators and baselines
- A-international-standard-current-under-review · ISO · 2024ISO 5667-3:2024 Water sample preservation and handling