SuperbaKnowledge Demonstration release
Platforms
Superba ecosystem
SuperbaHubEcosystem overview — how the environments connect, and the architecture behind them
Independent demonstrations
Superba KnowledgeYou are hereOperational maritime knowledge
Carbon Easy MapsMaritime decarbonisation, mappedPSC Easy MapsPort State Control, understood as a system
Training
LearningTraining delivery
ENIT
Superba ecosystem
SuperbaHubEcosystem overview — how the environments connect, and the architecture behind them
Independent demonstrations
Superba KnowledgeYou are hereOperational maritime knowledge
Carbon Easy MapsMaritime decarbonisation, mappedPSC Easy MapsPort State Control, understood as a system
Training
LearningTraining delivery
Home › Engine Room › Boiler Water Treatment
Operational guide · Safety & equipment

Boiler Water Treatment

Parameters, sampling points, limits, frequencies, chemistry, conductivity/TDS and blowdown must follow the maker/supplier-specific programme incorporated in PMS/SMS; there are no universal six daily tests or 1,000 µS/cm limit.

boiler water treatmentTDSblowdownboiler

Operational Explanation

Parameters, sampling points, limits, frequencies, chemistry, conductivity/TDS and blowdown must follow the maker/supplier-specific programme incorporated in PMS/SMS; there are no universal six daily tests or 1,000 µS/cm limit.

Regulatory Reference

ISM Code 10, boiler maker manual, approved water-treatment supplier programme and PMS/SMS.

Treatment aims to control corrosion, deposits and contaminant carryover into steam. An anomaly can also arise from feedwater, condensate return, deaeration or level control: chemical correction must accompany investigation of the cause. Wilhelmsen: boiler water risks.

Take samples through the specified sample cooler, following the manual and hot-water/pressure precautions. Record the sample point, reference temperature and method; verify calibration and reagents. Conductivity and TDS are related but are not the same quantity: use the method’s conversion without interchanging µS/cm and mg/l. Spirax Sarco: MS1 instructions.

Scope of Application

Specific boiler design/pressure, feed/condensate system, chemical programme, sample point, temperature correction and test method.

Procedure / How to Complete It

  1. Use only installed-programme parameters, points and frequencies.
  2. Sample and temperature-correct by prescribed method.
  3. Compare trends and ship-specific limits before dosing/blowdown.
  4. Investigate abnormal trends before changing chemistry or blowdown.
  5. Do not add phosphate, alkalinity builder, scavenger or polymer outside the programme.

Practical Example

A conductivity rise is verified with correct sample point/method; the team investigates contamination before using blowdown minutes or dosing from another boiler.

What Typically Goes Wrong

Imposing six daily tests, declaring polyelectrolyte superior, using 1,000 µS/cm, 15 minutes/watch or universal numerical dosing.

Common Mistakes Mistake Library

MistakeConsequenceHow to Avoid It
Imposing six daily tests, declaring polyelectrolyte superior, using 1,000 µS/cm, 15 minutes/watch or universal numerical dosing.Non-compliant decision or treatmentFollow the approved arrangement and applicable sources

What the PSCO Checks

Check the applicable treatment programme, results and trends, sampling competence, availability of instruments/reagents and management of out-of-limit readings. The log’s presence alone does not show that corrosion, contamination or defects have been resolved.

Operational Tips

Preparation checklist

FAQ

Which tests are daily?
Only those and at the frequency prescribed by the specific programme.
Is 1,000 µS/cm the limit?
Not universally; use the boiler/programme limit and method.
Is one treatment always superior?
No. Use only the approved chemistry for the plant.

Related Topics

Boiler OperationsPurifiers and Separators

Last substantive revision of this page: 15 September 2026 · page fingerprint fcab82608a44