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Nip Impressions® is Paperitalo Publications' flagship publication.  Published every Thursday afternoon (US Eastern Time), Nip Impressions® is eagerly read by pulp and paper professionals around the world.

24 Dec 14: A bad practice

One of the worst ways to add weight to a paper mill is by adding fixes to patch processes that, if run properly would not need a fix.


So called "jockey pumps" often fit in this category.  Every mill has them, even if they don't call them this.  They are pumps put in series with an original pump because either (a) the original pump was undersized or (b) the original pump is half worn out.


The proper thing to do is to size equipment properly, or if sized improperly, replace it with equipment that is sized properly.  Of course, this takes real engineering effort, something that is often in short supply these days.


Sadly, this bad practice is widespread.  I have not walked through a mill over six months old that is not doing this.


What examples of adding equipment that is a band aid can you tell us about?  What have you seen done to reduce or eliminate this problem?

We would like to hear from you. Please send an email to 
with "LGMI Frontiers" in the subject line.   


LGMI Design Practices
As always, your comments will be appreciated.
Think light!


Brian Brogdon, Ph.D.
Executive Director




Jim Thompson

Send us your comments by emailing Brian Brogdon
or Jim Thompson!




LGMI Weekly Ideas are presented for your consideration and inspiration only.  It is solely your responsibility to check for engineering correctness, applicability, standards, insurance policy and local, national or any other legal compliance required before implementing.  Neither The Light Green Machine (TM) Institute, Paperitalo Publications, Talo Analytic International, Inc., nor any individual associated with these entities accepts any responsibility for your application or compliance issues.

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