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Old 04-03-2019, 02:01 PM   #121
Riverguy
Senior Member
 
City: MN and FL
Vessel Name: Serendipitous
Vessel Model: Mainship 390, Bayliner 3258, Bayliner 4788
Join Date: Feb 2013
Posts: 285
Quote:
Originally Posted by sunchaser View Post
The safe assumption is , there will be free water in any large fuel tank that spends most of it's life sitting. That is why Steve D designs fuel tanks with sumps. And FF preaching same forever. As has been done for over a century.

Debating the degree of condensation has in fact been done, by fuel suppliers that have a spec to meet. Thus busting their tails to design and operate pretty neat water catching systems prior to that fuel being delivered to the customer.

The amount of condensation related water in fuel farms is surprising and constantly measured by both water collected and analysis on both ends of the fuel farm. But, does it matter for us small use boaters? Probably not if you don't let water get into your tanks to begin with.

The three primary sources of water as mentioned on TF are deck fills, vents and fuel coolers. A fourth, rusty worn out tank tops on a neglected vessel with leaky teak decks. Another, the onshore storage tanks!

www.hpcdfuel.com/pdf/DOWfuel_training.pdf
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