Deaerator dissolved oxygen, temperature-pressure, vent and mass transfer
Use this when deaerator dissolved oxygen, temperature-pressure, vent and mass transfer 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.
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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
0/32
- Answered
- 0
- To confirm
- 32
- Clues found
- 0
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Next question
Phase 1 · Data validity
How is the deaerator type, rated/turndown load, guaranteed DO and TTD, pressure, and inlet conditions?
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-consensus-standard-current-reaffirmed · ASME · 2024ASME PTC 12.3-1997 (R2024) Deaerators
- A-industry-standard-current · Heat Exchange Institute · 2023HEI Standards and Typical Specifications for Tray Type Deaerators, 11th Edition
- A-industry-technical-current · Heat Exchange Institute · 2026HEI Deaerator Section Technical Sheets
- A-international-expert-guidance-current · IAPWS · 2024IAPWS TGD2-09(2024) Cycle Chemistry Instrumentation
- A-international-expert-guidance-current · IAPWS · 2018IAPWS TGD9-18 Air In-leakage in Steam-Water Cycles
- A-international-expert-guidance-current · IAPWS · 2015IAPWS TGD3-10(2015) Volatile Treatments for Steam-Water Circuits
- A-consensus-standard-current-reaffirmed · ASME · 2018ASME PTC 19.11-2008 (R2018) Steam and Water Sampling
- A-consensus-standard-current · ASTM International · 2021ASTM D5462-21 On-Line Measurement of Low-Level Dissolved Oxygen
- A-consensus-standard-current · ASTM International · 2021ASTM D5543-21 Low-Level Dissolved Oxygen in Water
- A-consensus-standard-current · ASTM International · 2026ASTM D888-18(2026) Dissolved Oxygen in Water
- A-consensus-standard-current · ASTM International · 2025ASTM D1066-18(2025) Sampling Steam
- A-international-standard-current · ISO · 2017ISO/IEC 17025:2017 Testing and calibration laboratories
- A-government-guide · US DOE · 2014DOE Steam Tip Sheet #18 — Deaerators in Industrial Steam Systems
- B-oem-technical-handbook-current · Veolia Water Technologies · 2026Veolia Water Handbook — Boiler Feedwater Deaeration
- B-oem-technical-guide-current · Spirax Sarco · 2026Spirax Sarco — Pressurised Deaerators
- A-consensus-safety-current · ASME · 2026ASME Pressure Relief Device Testing and Section XIII framework
- A-government-safety-current · US OSHA · 2026OSHA Control of Hazardous Energy