- Mar 11, 2013
- 6,952
- Boat Info
- Sara Belle
2005 Weekender 215
- Engines
- Mercruiser 5.0 mpi, Bravo III
I'd bet carbonated produces the most vapors.
DOH!!!
Now a can't correct it because you reposted it........:smt009
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I'd bet carbonated produces the most vapors.
That is what I have read as well. I don't run the blower while refueling as there is a risk of sucking in the gas vapors, but it goes on when done and I always check for vapors. I don't think the blowers are necessary at speed, but I generally forget to turn the off when I head to plane. No harm done. They are meant to be used, and have a long service life. I certainly don't want to find out personally what happens when a boat explodes.
Bryan
My blowers are on 100% of the time, unless boat is off. When fueling, I also click all batteries off. Replacing blower, if need be, is easy. Peace of mind and family safety is priceless.
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My blowers are on 100% of the time, unless boat is off. When fueling, I also click all batteries off. Replacing blower, if need be, is easy. Peace of mind and family safety is priceless.
Sent from my iPhone using Tapatalk
I personally would not turn off the batteries while fueling. The simple act of turning them back on could introduce that spark we all want to avoid. As a general rule electrical circuits are stable when energized provided there isn't a fault. Except for a very loose connection, sparking only happens during the brief moment when current is applied.
If an electrical circuit has no faults there is no risk. The risk is when there is a fault and there are fuel vapours present in the bilge. Assuming you leave the batteries on, and the aircon pump or black water holding tank vaccum generator has just developed a fault and kicks in? What if the running bilge blowers have a short?
Great point about NOT turning batteries off. I have removed that step from my routine because of it. Always good stuff everytime I visit CSR. Now...back to my shrimp.
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My position on this is that by turning off the batteries you have deactivated the one piece of equipment designed to remove fuel vapors on the boat until you throw a switch that supplies voltage
But running the blowers has the potential to draw the fuel vapours in which are present outside of the boat courtesy of fuel tank breathers as the tanks are filling. Whilst the blowers evacuate the air from the bilge, the replacement air is drawn through the bilge vents laden with fuel vapours. So you've potentially exacerbated the problem by running the blowers whilst refuelling and filled the bilge with air containing the vapours.
You seem to be misreading my posts. I do not and have never run the blowers while fueling.