Streamline - Winter 2012 - (Page 19)

Preventative (Planned) BY FRANK NADEAU, WASTEWATER TECHNICIAN I Maintenance II WHY ANOTHER ARTICLE on preventive (planned) maintenance? Didn’t we get enough about it the first time? One can never learn enough about keeping his/her equipment operating at its fullest and most optimum level. Equipment that is kept at peak maintenance operates at its most powerful and least expensive operation. has been in place and operating for most of its expected life span or the day after installation? You can never start preventive maintenance too soon. Have any of you purchased a new lawn mower from one of the “big box” stores and failed to follow the start-up directions? Those units are shipped “dry” (no oil in the crankcase). Failure to put in the motor oil will result in a very shortlived engine. What do our water and wastewater treatment plants cost? I haven’t heard of many that didn’t go over the seven figure mark. Another little factoid is: The higher the value of plant assets and equipment per square foot, the greater will be the return on a PM program. An auto plant reported that the establishment of a PM program in their sixteen assembly plants reduced downtime from 300 hours per year to 25 hours per year. Their statement is: “With results such as this, no well-managed plant can afford not to develop a PM program.” Add to this the efficiency results. Plan maintenance actions during normal slow times or when the bulk of the crew is available, when the weather and other conditions are good, rather than the middle of the night or in the middle of a snowstorm. I don’t know about all of you, but I’m not at my best at 3 o’clock in the morning or when I’m freezing. To sum up this discussion, preventive maintenance will save money and time, enable your equipment to last longer, make your workload more regular and keep the Town Council more amenable to giving you a raise. Equipment that is kept at peak maintenance operates at its most powerful and least expensive operation. Preventive maintenance (PM) was an integral part of the maintenance program during the twenty years I spent in the Navy. I learned that even though some of the procedures appeared to be of little importance, the end result was that I knew my equipment better; I knew what was “normal” and whenever something didn’t seem “normal,” I was able to do the corrective maintenance to bring it back. Most pieces of equipment exhibit the graphed failure characteristics. Some equipments fail shortly after installation – “Infant Mortality.” Other equipment or components last through a “Normal Life” eventually coming to “End of Life.” An example: United Airlines Research showed that very few components exhibit “bathtub curve” characteristics. Their research showed that about 11 percent of all components exhibit wear-out (Normal Life) characteristics, but 72 percent of components do exhibit Infant Mortality failures. Department of Defense research demonstrated similar data. So when do we start performing preventive maintenance? After the equipment 19

Table of Contents for the Digital Edition of Streamline - Winter 2012

From the President
From the Executive Director
Groundwater in the Karst Landscape
There’s a Chill in the Air!
Chloramines in Question
Preventative (Planned) Maintenance II
What About Water Rates?
How to Get a Great Rate Analyst
Membership Directory
Wastewater Math
Throwing My Loop
eLearning Benefits
Membership Application
Do You Know What Your VRWA Benefi ts Are?
VRWA Mailbag
Welcoming New Members
Training Calendar
Board Of Directors
VRWA Committees
Index To Advertisers/

Streamline - Winter 2012