corosion in barges voids

[naserrishehri]

dear friends
what is the best way to reduce corrosion speed in voids of a barge. voids are not coated.

 

[waikikin]

Best is subjective ..... there's best expensive & best cheap.... Blast & paint with daily inspection to remove standing water...... or an oil based coating maybe lanolin based & check out now & then.... & in between.

Jeff.

 

[naserrishehri]

voids in my barge have not coated so corrosion have started. I 'm going to spray waste dark oil on the plates inside the voids. Is it a good way to decrease corrosion speed?

 

[waikikin]

voids in my barge have not coated so corrosion have started. I 'm going to spray waste dark oil on the plates inside the voids. Is it a good way to decrease corrosion speed?

If the oil coating excludes oxygen from the surface it should reduce corrosion...
If it fits your current resource theory......


Jeff

 

[naserrishehri]

i have heard using desiccant in voids is a good way to prevent corrosion but in this case using waste oil is cheap.

 

[jonr]

I think that lanolin or grease mixed with waste oil would stick better.

 

[WestVanHan]

BEFORE you set foot in any rusty barge hold, ventilate it with strong fans for a long time,and drop oxygen sensors down there.

The formation of rust can use up all the oxygen.

 

[AndySGray]

Expensive
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I used to use stuff called Dinitrol on car and truck chassis - roads in the UK are heavily salted in winter for de-icing - this stuff was self healing, it got scratched and a couple of weeks later it had flowed into the scratch. Some of the vehicles were like new underneath after 8 years.

They also use it for Oil and Gas platforms which does not surprise at all.

http://www.dinitrol.co.uk/Industrial/OffshoreOilandGasRigs.aspx

Cheap
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yes - you can use waste oil, but you need to thicken, a traditional paint used to be made from oils + tar. I would guess that the used motor oil would do just as well - though i think you'd need some carefull heating to blend. Might even be possible to put on hot with an old mop much as roofers do with hot tar.

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There are a few things to think about;-

• Flammability - both as being applied and when dried (future welding...).
  
• Smell - would be 'whiffy' for a while
• EPA / Hazmat / environment - used engine oil is notoriously carcinogenic, and a major polutant - if these voids are protected with an auto bilge pump, used oil will find its way into watercourses and you'll find your way to fines or court appearances. If these are simply flotation/construction voids which get the panel unbolted and popped every 3-5 years, I think you may risk it on a personal vessel

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