4.3
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Specifications and Manuals - Inert Gas Systems - 4 Operation of Inert Gas Plant - 4.3

4.3

 Shutdown procedures should be as follows:

  • .1 When all tank atmospheres have been checked for an oxygen level of not more than 8% and the required in-tank pressure has been obtained, shut the deck isolating/nonreturn valve.

  • .2 Open vent to atmosphere between the gas pressure regulating valve and the deck isolating/nonreturn valve.

  • .3 Shut the gas pressure regulating valve.

  • .4 Shut down the inert gas blower.

  • .5 Close the blower suction and discharge valve. Check that the drains are clear. Open the water washing system on the blower while it is still rotating with the power supply of the driving motor turned off, unless otherwise recommended by the manufacturer. Shut down the water washing plant after a suitable period.

  • .6 Close the flue gas isolating valve and open the air sealing system.

  • .7 Keep the full water supply on the scrubber tower in accordance with the manufacturer's recommendation.

  • .8 Ensure that the water supply to the deck water seal is running satisfactorily, that an adequate water seal is retained and that the alarm arrangements for it are in order.

Parent topic: 4 Operation of Inert Gas Plant
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