4 replies to this topic

[rikakose]

We have a loading arm used for unloading the tanker from the top by dip-pipes ,for the product is highly flammable.

 

Now, we want to use this loading arm to unload non-flammable product which is normally unloaded via bottom.

 

Is that possible? Any issues could be expected?

 

The loading arm is located on the pipe bridge, around half meter higher than the top of the tanker. N2 system is also equipped for pressurizing the tanker.

[fallah]

rikakose,

 

At a glance appears there wouldn't any issue following to such change other than using that loading arm for unloading from the top for a tanker is normally unloaded from the bottom; causes the tanker can be emptied just to a level a bit higher than the level of the bottom end of dip-pipe...

[siltonjm]

Hi

Dip-pipes are used to avoid splash filling, therefore removing the likelihood of static ignition during filling. This is extremely relevant when handling non-conducting fluids.

With regards to off-loading non-flammables through the dip pipe, I cannot see this being an issue.

Are there any cross contamination issues from a quality perspective?

Hope this helps,

Edited by siltonjm, 07 May 2018 - 03:47 AM.

[Amit J]

Rikakose,

basically dip pipes are used for following purpose:

a. To avoid electrostatic discharge ( and potential ignition) due to free falling flammable liquid.

b. To avoid foaming or material splashing

c. To avoid turbulence if any gravity separation is desired within the vessel

 

Just check if any of these purpose gets violated ( although not expected for unloading of non-flammable product).

[rikakose]

Thanks everyone for the quick response.