CLASSIFICATION OF BULKHEADS MEO CLASS 4

 CLASS A 

•  FORMING AS A BULKHEADS DECKS 
• MADE OF STEEL OR OTHER SUITABLE MATERIAL.
• ONE HOUR STANDARD FIRE TEST FOR PREVENT THE PASSAGE OF SMOKE AND FLAME.
• INSULATED BY NON COMBUSTIBLE MATERIAL.
• MINIMUM TEMPERATURE ON  UNEXPLORED SIDE SHOULD NOT RISE ABOVE 139° C.
• POINT TEMPERATURE ABOVE 180°C
• A60 - 60 MINUTES
• A30 - 30 MINUTES
• A15 - 15 MINUTES
• A0 - 0 MINUTES

CLASS B 

• FORMING BY A BULKHEADS DECKS AND CEILING AND LINING.
• 30 HOURS STANDARD FIRE TEST OF FLAME 
• UNEXPLORED TEMPERATURE 139°C ABOVE ORIGINAL
• POINT TEMPERATURE RISE MORE THAN 225°C 
• NON COMBUSTIBLE MATERIAL 
• B15 - 15 MINUTES
• B0 - 0 MINUTES

CLASS C 

•  CONSTRUCTED AS A DECK 
• APPROVED BY SOLAS AND CLASSIFICATION SOCIETY AS A NON COMBUSTIBLE MATERIAL.
• NOT REQUIRED TO STANDARD FIRE TEST.