CO2 Fixed Fire Fighting System

 Co2 BOTTLE REGULATION 

  • Ship of 200gt and above and machinery space of 500m3 and above should have fixed fire fighting System.
  • 85% of co2 will release within 2 mint (REASON- THE RAPID INJECTION OF CO2 IS NECESSARY TO COMPACT AN ENGINE ROOM FIRE, WHICH HAS ATTENDED TO SUCH MAGNITUDE THAT SPACE TO EVACUATED.)
  • co2 bottle  kept in the temp of below 55°C.
  • Co2 bottle normal pressure 53bar it will differ by temperature.
  • Without sypton tube will ensure that fully discharge of co2. (Without sypton tube low discharge and bottle will freeze because of lantern heat .
  • Busting disk will rupture 177 bar @ temperature of 63°C .
  • Once co2 will release in a space oxygen percentage will reduce below 15%.
  • Co2 bottle checked by isotropic gun for weighting.

CO2 ROOM REGULATION 

  • Co2 room should not used for other purposes.
  • Co2 room should be in one deck below the open deck . Stairway or lader should be provided.
  • Co2 room door should be open  outward.
  • Mechanical ventilation should be provided .
  • Ventilation should be 6 air change per hours.
  • Co2 room temperature maintenance below 55°C.
  • Co2 room height should be 2.4 m .


SAFETY ON CO2 BOTTLE 

 Trip switch

  •    It will cut off the ventilation
  •   And start audible and visible alarm.


Master valve 

  •  On main manifold line. Which is going ro machinery space or cargo space.
  • It will not allow the co2. if accidentally release.


Relief valve:

  •   It will located on end of the manifold.
  • It will lift manifold pressure is exceeded. 


Safety pin :

  •  It will be in bottle head assembly.


Busting disk:

  •  It will also in bottle head assembly.


Non return valve:

  •  Located between bottle head and manifold.
  • It will not allow the back flow of co2 when specific bottles are in operation.


Co2 leak alarm:

  • It will located on nthe manifold.
  • It will work @ 4 bar.

  

Maintenance and check on Co2 System 

 Check all cylinders are properly secured.

Check all cylinder's operating leavers.

Check clamping.

Flexible hose should be checked.


Monthly:

 All the above

Open cabinet check for alarm and ventilation trips.


Yearly:

 All the above 

Blow the System with service.


2 years:

 All the above 

Weighing  the bottles 


5 years:

 All the above

Spring loded relief valve pressure test 180bar.


10 years:

Cylinder pressure test 

After 10 years pressure test the cylinder every 5 years.


15years:

Pressure testing the line.

Cylinder to master valve @ 170bar.

Master valve to E/R or cargo hold @ 80bar

E/R and Cargo hold to nozzls @ 6-7 bar











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