Jason
Here is the program that we developed in the US DOE, which is the primary method still used today:
Motor Repair Tech Brief (energy.gov)This is an article I'd written on the topic which fits today with availability of replacements:
Motor Reliability | Electric motors: Repair or replace? Assess impact on production, reliability, suitability and cost | Plant ServicesAnd here are US DOE resources on rotating machinery (as well as other tech such as compressed air, steam, etc.) :
Motor Systems | Department of EnergyThe guidance developed in all of these programs were from experts in the field combined with energy, academia, and national labs work.
As for a rule of thumb - it generally fell between 60 and 80% of new. Only in a few cases have I seen 50%. The average was 70% the cost of new especially when upgrading energy efficiency.
Hopefully you find this helpful.
------------------------------
Howard W Penrose, Ph.D., CMRP
Random Past SMRP Chair (2018), 2019+ Govt Relations Smart Grid, Infrastructure and Cybersecurity Working Group Chair,
Vice Chair Technical Standards wind, solar, energy storage, American Clean Power (formerly AWEA), and
President
MotorDoc LLC
Lombard, Illinois
------------------------------
Original Message:
Sent: 09-18-2022 09:38 PM
From: Jason Resler
Subject: Rotating assets
Good evening all,
I'm am currently working on the strategy for our rotating assets. At what cost for a repair are you replacing with new instead of repairing? I believe typical is 60% of new. Also do you have all of your repairable assets set up as rotating assets or are there some assets that you simply repair and place back in inventory? Obviously we have our motors, pumps, and decanter bowls set ups as rotating. What do you do with smaller items such as valves and tank cleaning machines? Thank you in advance for your feed back.
------------------------------
Jason Resler, CMRP
Corporate Reliability Manager
Green Plains Inc.
Omaha, NE
jason.resler@gpreinc.com
218-770-3719
------------------------------