Procedure for Blowdown of Boiler Guage Glass

> Close water cock and steam cock of gauge glass and open the drain
> Open the steam cock a strong jet of steam should be seen from the drain after that close the steam cock
> Open the water cock a strong jet of water should be seen from the drain after that close the water cock and drain
> Open the water cock water will rise in the gauge above normal level
> Then open the steam cock the water should then settle down to give the correct level of boiler water

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  1. please clarify my doubt.... why two gauge glasses are given in boiler??

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    Replies
    1. during rough weather or ship heels at an angle it will be very difficult to find the correct readings. If two gauge glasses are there the we an find out it easily

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    2. during rough weather, both gauge glass will not show correct reading. dude, its solas requirement to install 2 gauge glass as an alternative option.

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