×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

Pump Philosophy

Pump Philosophy

Pump Philosophy

(OP)
Have you got any experience on pump operational best practice (spare pump policy).

I suppose the response might differ depending on the service and configuration of the pumps. Are you aware of any standard procedure on this issue?

I appreciate any experience you might have.

Regards
Ale18

RE: Pump Philosophy

To decide if a spare pump is required you can ask yourself, "If this pump were to fail, how long would it take to repair/replace and at what loss?"

If this pump is critical then you definitely need a spare.

Another question that I pose along the lines of spare pumps is how often should the spare be run?

RE: Pump Philosophy

(OP)
Perhaps my previous email was not clear enough but I would like to know if there is any standard policy of how operating pumps that have spare pump.

How often would you switch from the main to the spare?
How often do you test/start the spare pump?
For how long do you run the spare pump?
Do you run to failure the main pump?
If a failure occurs to the main pump, do you run the spare pump only for the time required to repair the main pump? Or is your spare pump becoming the main pump?

Any kind of information will be appreciated.

RE: Pump Philosophy

The last refinery I was in used to switch between the main and spare about every 2 weeks.  If both were the same driver type (eg. turbine), then the new 'lead' pump was run for 2 weeks before being switched over.  If the drivers were different and for example, because of energy prices, the motor was normally used, the turbine would be started up and run for a couple of days before switching back to the motor.

RE: Pump Philosophy

There is no standard API or anything on the spare pump philosphy. But normal practice differs based on the importance of the pump. Such as if the pump is very critical, then you will test start the spare pump every morning shift i.e once a day.  if it is not that critical then you do it at least twise a week.

If both main and spare pump have same driver then you will swichover the pump after the maintance of the main pump i.e you will run alternatively each pump.

But if driver is different for both pumps then the decision will be based on the driver choice.

All this is true only if the spare pump is of the same capacity as the main pump.
Feel free to ask if you have further Q's.

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! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close