Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

oil tank vent lines

have 6000 gal #2 fuel oil tank inground customer was told either tank or vent lines are leaking [water in oil]thought maybe should expose vent lines at top of tank and where vent comes up against building and pressurize lines to determine if they are problem.but why are there 2 vents and whats normal location for them to be on tank. anybody!


  • John@Reliable_4
    John@Reliable_4 Member Posts: 101
    Oil leak HELP!

    If I was you , I would dig up and expose top of tank. Look for a return line , most oil leaks on ust's are from this.
    If you do find this remove and replace it, while it's open I would change all vent,fill,return,supply lines.Swing joints on fill and vent piping. On the supply and return use a covered line that is UL approved for earth contact. If you don't find any oil here time to call in a vacuum truck and replace tank. Good luck , you might need it. P.S. to find where to dig we use a probe to find how tank is laying a 6000 gal tank could be from 16' to 29' long. Hope this helps John@Reliable
  • Earthfire
    Earthfire Member Posts: 543
    Haz Mat Liability

    If there is a leak , does your state consider it a hazmat spill, and do you have the training and certification to deal with it? The state agencies are interested in generating revenue,and fines are a great source.With a 6000 gal tank you might be better off getting a tank service company involved.
This discussion has been closed.