Combined cooling-water scaling, corrosion and biofouling
Use this when combined cooling-water scaling, corrosion and biofouling 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
0/33
- Answered
- 0
- To confirm
- 33
- Clues found
- 0
Load a test scenario
Next question
Phase 1 · Data validity
How are system boundaries, tower components, heat exchangers, metallurgy, and coatings?
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 · 2024ISO 16784-1:2024 Corrosion and fouling in industrial cooling water systems — Part 1
- A-international-standard-current · ISO · 2024ISO 16784-2:2024 Corrosion and fouling in industrial cooling water systems — Part 2
- A-consensus-standard-current · ASTM International · 2023ASTM D2688-23 Determination of Corrosion Rate in a Water System in the Absence of Heat Transfer (Weight Loss Method)
- A-consensus-standard-current · ASTM International · 2024ASTM D4778-24 Determination of Corrosion and Fouling Tendency of Cooling Water Under Heat Transfer Conditions
- A-industry-standard-legacy · AMPP · 1989AMPP/NACE RP0189-1989 On-Line Monitoring of Cooling Waters
- A-industry-standard-current · AMPP · 2023AMPP/NACE SP0775-2023 Preparation, Installation, Analysis, and Interpretation of Corrosion Coupons
- A-government-guide · US EPA · 2017EPA Water Efficiency Management Guide — Mechanical Systems
- A-government-guide-current · US EPA · 2023EPA WaterSense at Work — Cooling Towers
- A-government-health-current · CDC · 2025CDC Control Toolkit for Legionella
- A-government-health-current · CDC · 2025CDC Control Toolkit — Cooling Towers
- A-government-health-guide · CDC · 2022CDC Legionella Environmental Assessment Form Marking Guide
- A-industry-standard-current · ASHRAE · 2021ANSI/ASHRAE Standard 188-2021 Legionellosis Risk Management
- A-industry-guideline-current · ASHRAE · 2023ASHRAE Guideline 12-2023 Managing the Risk of Legionellosis Associated with Building Water Systems
- A-international-standard-current · ISO · 2017ISO/IEC 17025:2017 Testing and calibration laboratories
- A-international-standard-current-under-review · ISO · 2024ISO 5667-3:2024 Water sample preservation and handling
- A-government-safety-current · US OSHA · 2026OSHA Legionellosis Control and Prevention
- A-government-safety-current · US OSHA · 2026OSHA Control of Hazardous Energy