Plant Services - October 2007 - (Page 63)

ASSET MANAGEMENT Pumps TABLE 3. TOTAL CONDITION SCORE RATINGS Rating 1 2 3 4 5 Description of condition Very good condition, only normal maintenance required Minor defects only, minor maintenance required, 5% of the asset needs maintenance Backlog maintenance required to return to accepted service level, signi cant maintenance required, 10% to 20% of the asset needs maintenance Requires renewal, signi cant renewal/upgrade, 20% to 40% of the asset needs renewal Asset unserviceable, more than 50% of the asset requires replacement Shaft alignment in a Flash® jor maintenance that restored to near-perfect condition. Using this option, you can restart your decay curve at a total condition score close to 1. Shifting the most recent degradation curve to the right helps you estimate the expected condition decay for the rebuilt pump. e new curve assumes you don’t change your maintenance practices. You might need to examine the decay curve in more detail by reviewing individual evaluations to determine what factors are driving the condition score upward. If some question consistently receives a poorly-scored answer, examine causes by performing a root cause failure analysis. If you can ﬁnd the cause and correct it, adjust the new projected decay curve to reﬂect this change in maintenance procedures. tion assessment process is simple and provides useful information. Once you’ve performed your newly-developed condition assessment process several times, it can become a routine part of your maintenance management program. Attach the list of questions and corresponding answers to a PM work order and you can perform the condition assessment at your desired frequency. After completing several evaluations, you can develop a decay curve for the pump. is curve allows you to budget for maintenance needs more accurately and to make betterinformed decisions when considering repair versus replacement, which increases the eﬀectiveness of your overall asset management program. Je Sanford is a senior maintenance specialist with CH2M HILL OMI in Spartanburg, S.C. Contact him at je .sanford@ch2m.com and (864) 599-4659. New! Offset shaft alignment in a Flash. A new hardware+software expansion kit is now available for the XA that allows quick and easy alignments of offset (cardan) machine shafts. The system incorporates on-screen Flash® animations that actually walk the user through the offset shaft alignment process! Quickly align your offset shafts to reduce wear on gearboxes, bearings and offset joints. Assessment yields better assets Developing and using this condi- More resources at www.PlantServices.com/thismonth More resources at www.PlantServices.com/thismonth Failures - “Causes of centrifugal pump failure” E ciency - “Doing it right the rst time” Reliability - “Designing out pump failures” NPSH margins - “Cavitatin problems?” Waterhammer - “Motor controllers can snu out water hammer” Checklists - “Pump maintenance programs pay” For more, search www.PlantServices.com using the keywords assessment, corrosion and evaluation. www.vibralign.com 800-379-2250 Flash is a registered trademark of Adobe Systems Incorporated. O .PLANTSERVICES. 63 http://www.PlantServices.com/thismonth http://www.PlantServices.com/thismonth http://www.vibralign.com http://www.PlantServices.com http://www.PlantServices.com

Table of Contents Feed for the Digital Edition of Plant Services - October 2007

Plant Services - October 2007 Contents Monetize It Letters Step into the Blogosphere What it Takes to be a Leader Up and Running Crisis Corner What Works From the Summit Treat Them Right Access Control Out of the Woods Show Me, Don't Guess Condition Assessment Made Easy The Air Above the Floor Power to the Prime Movers In the Trenches Illuminating Maintenance

Plant Services - October 2007

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