CB14-MAX
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Inspector Detail
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Common issues
- Internal leakage between media circuits from brazed-joint fatigue cracking
- External leakage at pipe connections or connection gaskets
- Fouling/scaling reducing heat transfer efficiency over time
- Copper braze corrosion when exposed to incompatible media such as ammonia or high-chloride water
- Freeze damage if a water-based circuit runs near 0 C without adequate antifreeze protection
- Thermal-cycling fatigue cracking after repeated rapid temperature swings
Inspection checklist
- External visual inspection for leakage at brazed joints and pipe connections
- Pressure/leak test at the class-required interval
- Performance check - inlet/outlet temperatures and pressure drop trended against design
- Insulation and support/bracket condition
- Connection flange and pipe joint tightness
- External corrosion check on frame and connection points
- Approach-temperature trend compared against commissioning baseline
Service intervals
| Pressure/leak test | typically per class pressure-vessel inspection regime, often around every 5 years - confirm against the applicable class rule |
| Performance/fouling trend review | every 6-12 months |
| External visual inspection | at routine engine room rounds/PMS interval |
Typical wear limits
| Approach temperature / fouling factor | monitor for rise above the commissioning baseline; investigate cleaning or replacement if approach temperature increases materially - confirm against Alfa Laval's design data for the CB14-MAX |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Critical spares
- Complete replacement unit - brazed plate exchangers are not field re-plateable like gasketed types
- Connection gaskets/O-rings at pipe joints
- Mounting brackets and fasteners
Safety
- Never exceed the rated design pressure (33 bar) or design temperature - confirm relief protection is fitted on both circuits
- Risk of cross-contamination between circuits if an internal leak develops, e.g. oil into cooling water
- Copper brazing is not compatible with ammonia or high-chloride media - verify media compatibility before putting the unit into a new service
- Hot surface/scald risk on the high-temperature side during inspection
Class survey
Likely falls under class pressure-vessel/heat-exchanger rules where fitted in essential systems; surveyors typically want pressure test certificates, evidence of periodic leak/performance checks, and confirmation that design pressure and temperature match the actual service duty, particularly where the unit is in a fuel, lube oil or cooling water system serving classed machinery.
Components & Design
Component data being added…
Technical Data
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