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What is the Boiler blow down procedure ( cool down )

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  • What is the Boiler blow down procedure ( cool down )

    What is the Boiler blow down procedure ( cool down )

  • #2
    1) Change the fuel oil burning system from HO to DO and then shut down the burning system.

    2) Stop feed p/p close feed check valve.

    3) Drain down the boiler after allowing it to cool down.

    4) If no sufficient time to do this, lower the boiler pressure to 3 to 4 bar.

    5) Shut the main steam stop valve.

    6) Open the ship side valve then open the blow down valve.

    7) Banging noise will appear when boiler is empty.

    8) Close the boiler blow down valve and ship side valve.

    9) Then release the steam pressure through safety v/v by means of easing gear.

    10) When pressure is off, open the air vent and the boiler to cool down.

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