Maintenance On Co2 System
Things you should follow before maintenance,
> Inform the bridge before going inside the CO2 room.
> Start ventilation blowers first and the room should be ventilated for some time.
> Go with a person with proper communication equipment.
Weekly
> Check all cylinders are properly secured.
> Make sure that nothing has been placed to interfere the normal operation of the system
> Check all the operating levers and their accessories are properly tight.
> Check clamping.
> Check valve actuator.
Once in every month
> All the weakly checks
> Inspect for piping and equipment for mechanical breakage
> Operate the valve several times and make certain that it does not stick
> Open the cabinet door and check the alarm and ventilation cut off working.
Once In Every Year
> All the monthly checks
> Cylinder should be weighed to determine the Co2 content
> If the net weight is decreased by 10% of the actual weight, cylinder should be recharged
Once In Every Two Year
> All the checks in yearly
> Blow through all piping with service air @ 25 bar pressure or Co2 to make sure that the line is not blocked
Once In Every Five Year
> All the above
> Spring loaded relief valve pressure test @ 180 bar.
10 Yearly
> Cylinder pressure test @ 250 bar ( after the first 10 year cylinder to be tested every 5 year.)
15 yearly
Pressure testing of line by suitable liquid
> Cylinder to master valve: @ 170 bar
> Master valve to E/R or Cargo hold valve: @ 80 bar
> E/R or Cargo hold to nozzle: @ 6-7 bar