Fire Resisting Single Leaf Hinged Door - Type: 'MKB15CXT" ('MKB15CXT")

Common issues

• Door leaf or frame distortion from impact or poor adjustment, preventing proper closing
• Hinge wear or corrosion causing sagging or increased operating force
• Latch or lock mechanism seizure or misalignment
• Seal or edge gasket deterioration, hardening or missing parts
• Door held open by wedges or other devices, defeating its function
• Damage to the leaf surface or core exposing insulating material

Inspection checklist

• Operate the door through its full travel and check it closes and latches fully
• Inspect hinges, latch and closing device for wear and corrosion
• Check seals and gaskets for condition and continuity
• Inspect leaf and frame for distortion, damage or gaps
• Verify that the door is not wedged or held open
• Check that identification plate and markings are legible and match the approval
• Confirm that the surrounding bulkhead and penetrations are intact
• Review the fire control plan against the door's position and class

Service intervals

Typical wear limits

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

• Matching hinges
• Latch or lock components
• Seals and edge gaskets
• Closing device components where fitted
• Fasteners and hardware matching the approved design
• Identification plate

Safety

• A door that does not close or latch compromises the fire division
• Never wedge or hold open a fire door unless an approved hold-open device is fitted
• Repairs must use components approved for the door type to keep the rating
• Hot work near the door needs a fire watch, as core materials may be heat sensitive

Class survey

Listed under a UK MCA record for a single-leaf hinged B-class fire door. Surveyors typically check that doors in B-class divisions close and latch, that markings match the approval and that no unauthorised penetrations or modifications affect the division.

Estimated lifetime: Not applicable in running hours; a passive fire protection item inspected for condition, expected to remain effective for the vessel's life when maintained.