Type VOR-2385

Common issues

• Flame element blockage or fouling from cargo residue, more critical here given the detonation rating
• Housing corrosion under continuous cargo vapor exposure
• Gasket leakage at the modular joints
• Flame element reinstalled incorrectly after cleaning, defeating the detonation rating
• Ice blockage in cold ambient conditions
• Mounting bracket fatigue from pipe vibration

Inspection checklist

• Flame element inspection for blockage or corrosion per manufacturer schedule
• Verify correct orientation and secure mounting (horizontal per design)
• Check modular joint gaskets and bolting torque
• Confirm the nameplate rating (max. detonation velocity/pressure) matches the system's design duty
• Inspect for external corrosion or mechanical damage
• Check drain, if fitted, for condensate removal

Service intervals

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Critical spares

• Flame element, detonation-rated, correct DN and type for this unit
• Modular joint gasket set
• Mounting bracket hardware

Safety

• This unit is detonation-rated - fitting a deflagration-only element in its place would be dangerous; confirm the correct rated part before reinstalling
• A blocked arrester risks tank over- or under-pressure
• A gas-free certificate is required before hot work or element removal on cargo systems
• The element must be reinstalled by trained personnel per the maker's instructions - incorrect reassembly defeats the protection

Class survey

Detonation arresters in cargo vent lines fall under class survey requirements for tanker venting/vapor systems. The approval basis (IMO, EU-MED, ADN) and DN rating on the nameplate must match the piping system's classification, and inspection records for flame element condition should be retained for survey.