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