Tag Archives: Upgrading Pump Parts with Composite Materials

A Look at Life Cycle Costs – Part 3: Unplanned Events

Typical Life-Cycle Cost For A Pump System Infographic

Typical Life-Cycle Cost For A Pump System

Today we take a final look at the above graph. We have already looked at Energy and Maintenance costs. Today we look at Operating, Environmental, and Downtime Costs.

When you upgrade pumps with composite materials like Vespel® CR-6100, Boulden B-Series, or Metcar® composites, you eliminate the metal-to-metal contact points in the pump, which essentially eliminates the risk of pump seizure. The pump is far more likely to survive running dry at start-up or during off-design events.

Benefits of Upgrading Pumps With Composite Materials

These are hidden bonuses to upgrading your pumps with composite materials. High quality composite materials act like a safety net in your pump, and sometimes, the savings from this benefit pay for all of the composite upgrades your company will ever do. Consider the following case studies:

Case Study: Condensate Return Pumps

Many years ago, a refinery upgraded the vertical pump shaft bearings in one of their 3 condensate return pumps to Vespel® CR-6100. The other two pumps had their original bronze bearings. The pumps were located in the hot well of a condensing steam turbine. The turbine was driving a critical compressor in one of the refinery process units.

Something happened which changed the pressure in the hot well and the pumps started operating in a vacuum intermittently for 9 hours. The two pumps with bronze bushings seized and had to be removed from service. The pump with Vespel® CR-6100 survived and allowed the process unit to continue operating. An upgrade which cost about $2000 likely saved the refinery millions.

Case Study: Potassium Carbonate Pumps

Plant operators heard a loud noise coming from a hot potassium carbonate pump. They were concerned because if potassium carbonate is released into the atmosphere, it creates a respiratory hazard. They shut down the pump and switched to the spare.

When the pump arrived in the shop, they found a piece of metal had broken from a valve and lodged in the pump impeller. Fortunately, during the previous repair, the maintenance shop had upgraded the pump to Vespel® CR-6100 case rings. During the incident, the pump did not seize, the seals didn’t leak, and a potentially major incident was likely avoided. A $3000 upgrade to the wear rings likely saved hundreds of thousands of dollars.

Case Study: Hydrocracker Charge Pump

Improved efficiency can also translate into increased production. A refinery upgraded their 9-stage hydrocracker charge pump, operating at 6400 rpm to Vespel® CR-6100 wear rings with reduced clearance. This $25,000 upgrade increased unit throughput by 4% creating millions of additional revenue for the refinery over the life of the installation.

Pump Impeller with Vespel CR-6100 wear rings

Conclusion

Upgrading your pumps to composite materials reduces pump life cycle costs by making your pumps safer, easier to operate, more reliable and more efficient. When unexpected events occur or where you can increase throughput, a single installation can save you millions of dollars.

Take a look at the pumps coming into your workshop. Use the repair as an opportunity to make the pump better by upgrading to composite wear parts. Boulden has the material you need in stock and can deliver raw material or machined parts with very short lead times. Get in touch with us today!