Ship galleys are one of the areas with the highest fire risk due to intensive oil use, high temperatures, and open flame sources. Oil fires that occur especially in deep fat fryers cannot be extinguished with traditional water or dry powder; on the contrary, these methods can cause the fire to explode. Therefore, the use of Wet Chemical Suppression Systems in ship galleys is mandatory.
Saponification Effect
Wet chemical systems use a special potassium-based liquid. When this liquid is sprayed onto burning oil, it enters a chemical reaction and creates a soap-like foam layer on the surface of the oil through a process called "saponification." This layer:
- Extinguishes the fire by cutting off the oil's contact with air.
- Prevents re-ignition by cooling the oil.
- Makes the environment safe by trapping vapor.
Automatic and Manual Activation
Galley systems installed by Teotek Marine are usually automatically activated by fusible links placed inside the hood. When a certain temperature is reached, these detectors melt and trigger the system. Additionally, a manual pull station is located near the galley exit so that personnel can manually activate the system.
When the system is activated, it must also automatically cut off the electrical and gas flow to the galley. This integration is a critical security layer to prevent the fire from growing. Periodic checks of galley suppression systems should not be neglected for the safety of ship personnel and passengers.