Broco Torch

[Tunakiller]

How do you light a Broco torch underwater?. Can you just use a 12 volt battery on a pos/nag on a striker plate, will 12v light it?. Will we have to seal the battery from the seawater.. Any input here.. Thanks..


CRD

 

[muddiver]

You can't use a conventional battery underwater. I believe you can light a Broco off 12 volts. What you are missing, and it is obvious you don't know anything about ultra thematic cutting, is that the rod requires a source of pressurized oxygen gas just like an acetylene torch. Typically you run a welding cable from the surface mated to an oxygen hose that attach to the Broco torch. Without the torch head the rods will not work.

 

[Darol]

Yes you can light them with 12 volts. We used a Broco Rig in marinas to remove old docks and install floaters.
We would use a split piece of PVC pipe as a wrap around guide for the rod to rest on during the cut, as we were in zero vis.
Remember these rods, when lit, burn through almost anything, including scuba tanks..... Just a thought....

 

[MScorpa]

How do you light a Broco torch underwater?. Can you just use a 12 volt battery on a pos/nag on a striker plate, will 12v light it?. Will we have to seal the battery from the seawater.. Any input here.. Thanks..


CRD

Seal the battery from seawater....what the F are you talking about?! You should read the Broco torch manual and follow it exactly! Then have experienced commercial divers and dive supervisor perform the work. Follow the link below:

http://www.broco-rankin.com/linkservid/26C6B8C0-3048-651A-FE389014BD8909F7/showMeta/0/

 

[Darol]

We were in a marina, very shallow water, and the battery stayed in the boat. We used two short pieces of old heavy wire from the battery.
These were great lakes jobs, fresh water.....
FTR I'm a nuclear certified welder with, at that time, twenty plus years welding experience, including arc gouging, and magnesium lance cutting... MScorpa makes a great point, this is not something to learn O.J.T.

 

[Tunakiller]

We are just thinking on how to remove some artifacts from some sunken boats. Broco said not to use 12V or 24V battery for more then 60fsw. I'm sure that the voltage/current loss with 60 plus foot of cable will not create enought spark to light it. So how to light a stand alone torch in 130' to 160fsw is the question. Yes we will take 100% o2...

CRD

 

[MScorpa]

We are just thinking on how to remove some artifacts from some sunken boats. Broco said not to use 12V or 24V battery for more then 60fsw. I'm sure that the voltage/current loss with 60 plus foot of cable will not create enought spark to light it. So how to light a stand alone torch in 130' to 160fsw is the question. Yes we will take 100% o2...

CRD

I would have to assume from your posts that you have never used one of these torches before and you are planning on designing some sort of "jerry rig" to dive down to 160' on scuba with a tank of oxygen and a battery strapped to your back so you can cut some portholes? Burning is a dangerous activity even with experienced divers and full support crew topside who have appropriately surveyed and prepped the site. There are so many things that could (and probably will) go wrong if you don't know what you are doing. Now you'd have to ask yourself; are these "artifacts" really worth dying over?

 

[Bombay High]

Tunakiller - do not attempt what you are planning to. Tuna will not be the only thing you will be killing.
Burning and cutting is serious business, and accounts for a large number of accidents in EXPERIENCED commercial divers .
If you do not vent your work piece whilst cutting for salvage, there is a good chance you will have an accumulated pocket of hydrogen from the breakdown of H20 into H2 and o2. This, when it explodes, will blow you clean out of the water.
The number of ways you can kill yourself attempting this, you dont even know.
You need surface support. Comms. Surface supply.
Dont attempt it. It is NOT something you can learn on the internet.

 

[DivingOtter]

Why is anyone giving this guy advice? When he ends up hurt hell be looking for people to sue. This is why I cant stand most scuba divers.

 

[DCBC]

How do you light a Broco torch underwater?. Can you just use a 12 volt battery on a pos/nag on a striker plate, will 12v light it?. Will we have to seal the battery from the seawater.. Any input here..

Become a IMCA licensed Commercial Diver and work with your team. Without the knowledge and work site awareness, you're asking for trouble.

:storm: He's always waiting... :reaper: