×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

C-5 rich gasoline

C-5 rich gasoline

C-5 rich gasoline

(OP)
Does anybody have experience with storage tanks for Pentane Rich Gasoline? I have to evaluate existing fuel oil # 2 storage tank 30,000 barrels capacity for possible use to store Pentane Rich Gasoline. Existing tank has floating roof and vent to atm between floating roof and stationary roof.
Are there any special roles and regulations for lighter fractions? MSDS list this gasoline as “extremely flammable, vapors form flammable or explosive mixtures with air at room temperature.”  Does it mean I need nitrogen blanket to 30,000-barrel tank? Any references to API, ASME or any other authority?
I will appreciate any help.

RE: C-5 rich gasoline

A nitrogen blanket is appropriate for any flammable liquid with light ends.  API 2000 provides sizing information.  Search the threads for nitrogen blankets.  

Paul Ostand published a blanet guide.  Look for it at
www.ostand.com



RE: C-5 rich gasoline

LSeagull

Nitrogen at a 30.000 barrels tank?

RE: C-5 rich gasoline

How rich is Pentane Rich? What is the RVP?

RE: C-5 rich gasoline

The nitrogen capacity might be about 30000 scfh for a 30000 barrel tank.  Which do you prefer, nitrogen or air to mix with your gasoline vapors?  Nothing about 30000 scfh surprises me as I just did a project like that last year - for alcohol.

RE: C-5 rich gasoline

Certainly it is prudent to blanket a tank containing flammables. However, just like your auto's tank, it may not be necessary because the vapor inside the tank becomes too rich to support combustion.  That's how they can put potentially sparking components (Fuel pumps, level senders) INSIDE an automobile fuel tank.  

RE: C-5 rich gasoline

When pumping gasoline out from a 30000 barrel storage tank it is inbreathing air unless blanketed by nitrogen.  As the tank level becomes low the volume of air is potentially high.  One of my favorite refinery explosions was an empty storage tank.  It makes for a good story recalled from my junior high school days.

RE: C-5 rich gasoline

The previous posts are directing you correctly. Use API 2000 or contact an expert for assistance.

This is a critical application and needs to be done correctly.

PAUL

Paul Ostand
www.ostand.com

RE: C-5 rich gasoline

(OP)
Thanks to everybody for help.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources