Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 16-08-2011, 13:50   #1
Registered User

Join Date: Feb 2011
Boat: aluminium twin keel, Laurent Giles, 62 foot
Posts: 100
Retiring a Diesel Tank

Hello,

I am planning to clean my four dieseltanks and get rid of the sludge and water. After that i will not need all four tanks for a long time and am planning to leave two tanks empty for a year or two. Is it better to fill them with water in the meantime or leave them empty?

Cheers
__________________

__________________
heintje23 is offline   Reply With Quote
Old 16-08-2011, 13:54   #2
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: Retiring a diesel tank

Leave them empty. Filling with water for a year or two without using it will just hasten any corrosion.
__________________

__________________
DeepFrz is offline   Reply With Quote
Old 16-08-2011, 15:01   #3
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
Re: Retiring a diesel tank

Empty. The weight makes the boat less efficient.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 16-08-2011, 15:14   #4
Registered User

Join Date: Feb 2011
Boat: aluminium twin keel, Laurent Giles, 62 foot
Posts: 100
Re: Retiring a diesel tank

Okay thanks. I was thinking about using the keel tanks and leaving the higher located wing tanks empty.
__________________
heintje23 is offline   Reply With Quote
Old 19-08-2011, 02:22   #5
Registered User
 
nigelmercier's Avatar

Join Date: Jul 2011
Boat: Bavaria 47
Posts: 172
Re: Retiring a Diesel Tank

Quote:
Originally Posted by heintje23 View Post
Is it better to fill them with water in the meantime or leave them empty?
Why not leave them with a bit of diesel plus a shock dose of biocide?
__________________
Nigel
Got a Bavaria? Want a Bavaria Forum? Click here!
nigelmercier is offline   Reply With Quote
Old 19-08-2011, 02:31   #6
Senior Cruiser
 
Talbot's Avatar

Cruisers Forum Supporter

Join Date: Jun 2004
Location: Brighton, UK
Boat: Privilege 37
Posts: 3,579
Images: 32
Re: Retiring a Diesel Tank

A bit of diesel will encourage condesation.

However, the biocide dose for the last couple of litres will ensure that the fuel lines remain good. The stuff I use is called "Fuel Set" and this is also a water emulsifier. It is proven to clear the fuel - I have just demonstrated this on my own tanks (long story)
__________________
"Be wary of strong drink. It can make you shoot at tax collectors - and miss."
Robert A Heinlein
Talbot is offline   Reply With Quote
Old 19-08-2011, 04:27   #7
Senior Cruiser
 
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,114
Re: Retiring a Diesel Tank

Seal all openings and fill with CO2 from an extinguisher. Works with black iron tanks.
__________________
so many projects--so little time !!
Blue Stocking is offline   Reply With Quote
Old 19-08-2011, 06:15   #8
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,579
Images: 240
Re: Retiring a Diesel Tank

Quote:
Originally Posted by Blue Stocking View Post
Seal all openings and fill with CO2 from an extinguisher. Works with black iron tanks.
Or Nitrogen, if you can get it.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 19-08-2011, 06:47   #9
Registered User

Join Date: Feb 2011
Boat: aluminium twin keel, Laurent Giles, 62 foot
Posts: 100
Re: Retiring a Diesel Tank

Is that to take away the oxygen?
__________________
heintje23 is offline   Reply With Quote
Old 19-08-2011, 06:49   #10
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: Retiring a Diesel Tank

Yes, then seal around the outside of the tank with heavy duty vapor barrier and fill that with nitrogen, after you have carefully dried the inside of the boat to ensure no possible chance of water vapor getting to the tank.
__________________
DeepFrz is offline   Reply With Quote
Old 19-08-2011, 07:22   #11
Senior Cruiser
 
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,114
Re: Retiring a Diesel Tank

Thought the OP was concerned about condensation forming in the tank.
CO2 and Nitrogen would be drying agent to displace ambient atmosphere.
__________________
so many projects--so little time !!
Blue Stocking is offline   Reply With Quote
Old 19-08-2011, 07:33   #12
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: Retiring a Diesel Tank

Heh, I didn't even notice it was an aluminum boat.
__________________
DeepFrz is offline   Reply With Quote
Old 19-08-2011, 11:11   #13
Registered User

Join Date: Feb 2011
Boat: aluminium twin keel, Laurent Giles, 62 foot
Posts: 100
Re: Retiring a Diesel Tank

The tanks are built in by the way, with massive capacity. Hence the retirement of two or three of them.
__________________

__________________
heintje23 is offline   Reply With Quote
Reply

Tags
diesel

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tank Monitor - SeeLevel ? alisewski Plumbing Systems and Fixtures 25 24-07-2014 07:23
Diesel Tank Painting Gerry Courtney Construction, Maintenance & Refit 18 05-08-2011 07:32
SeaLand Tank Minder Maintenance captainscs Construction, Maintenance & Refit 1 02-08-2011 18:56
Do Not Use Biocide Journeyman Engines and Propulsion Systems 37 24-07-2011 19:47
Head Odors Sailagain Plumbing Systems and Fixtures 19 15-07-2011 11:06



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 08:28.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.