Tank - Online External Floating Roof Pontoon Cutting

Dear members,

I would like to ask is there any method available to carry out online cutting on tank pontoon (with crude inside the tank, full inventory)? Any cold-cut method ever use for this kind of works?

thanks

regards

[QUOTE=nash9701;213690]Dear members,

I would like to ask is there any method available to carry out online cutting on tank pontoon (with crude inside the tank, full inventory)? Any cold-cut method ever use for this kind of works?

thanks

regards[/QUOTE]

You can use hydrocutting it's cold method

[QUOTE=assos;213981]You can use hydrocutting it's cold method[/QUOTE]

I know about HPWJ cutting, but there is potential it will flood the pontoon during cutting, and the equipment set-up not convenience especially during on-stream, any other method? Produce no spark and less heat generation...

About the flood you can use pneumatic pumps and drive the flood at the drain of the tank.
Except these the quantity of water is not very much we talke for 20 m^3 .I do these practise many times.
In case you have material in the pontoons there is no problem.

[QUOTE=assos;215379]About the flood you can use pneumatic pumps and drive the flood at the drain of the tank.
Except these the quantity of water is not very much we talke for 20 m^3 .I do these practise many times.
In case you have material in the pontoons there is no problem.[/QUOTE]

My tank roof is single deck type, hence the pontoons area are not big. Tank size 172'dia. x 54' height. The space require to be cut is around 2' x 3'. I know we can do pumping continuously or depend on water content inside the pontoon to the drain. I have this is my mind. Anyhow the contractor HPWJ use mixture of sand + water. May I know where do you practise this on-stream cutting method?

Note : HPWJ or etc. not really a concern if tank is down and HC free.

[QUOTE=nash9701;215834]My tank roof is single deck type, hence the pontoons area are not big. Tank size 172'dia. x 54' height. The space require to be cut is around 2' x 3'. I know we can do pumping continuously or depend on water content inside the pontoon to the drain. I have this is my mind. Anyhow the contractor HPWJ use mixture of sand + water. May I know where do you practise this on-stream cutting method?

Note : HPWJ or etc. not really a concern if tank is down and HC free.[/QUOTE]

In greece in HELLENIC PETROLEUM REFINERIES and the refinerie of Motor Oil Hellas

[QUOTE=assos;215973]In greece in HELLENIC PETROLEUM REFINERIES and the refinerie of Motor Oil Hellas[/QUOTE]

Do you have any pictures during the cutting? Can you share with me?

thanks

regards

Anyone ever experience using foam injection as method of pontoon repair??