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The criteria for expansion joint selection for fluid piping applications focuses on the expansion joint’s quality, durability and capabilities. To ensure that the rubber expansion joint’s installation provides optimal service life, operators and maintenance personnel must consider specific conditions and take a systematic approach.

Many associations, societies and regulatory agencies have rewritten and redeveloped emissions and leakage standards and controls year after year.

Many associations, societies and regulatory agencies have rewritten and redeveloped emissions and leakage standards and controls year after year.

Many associations, societies and regulatory agencies have rewritten and redeveloped emissions and leakage standards and controls year after year.

Many associations, societies and regulatory agencies have rewritten and redeveloped emissions and leakage standards and controls year after year.

When discussing expansion joint selection, the conversation typically focuses on the quality, durability and capabilities of the expansion joint. However, the expansion joint’s role in the overall energy efficiency and optimization of the piping system is often overlooked.

High performance liquid chromatography (HPLC) is a chemical analysis technique with wide applications, from food and medical safety to manufacturing. HPLC can detect vitamin D levels in blood serum or performance enhancing drugs in urine. The technique has even been used to synthesize blood and determine DNA evidence in forensic investigations.

Within the oil and gas industry, the rotating shafts of equipment—such as pumps, motors, compressors, gearboxes and turbines—perform an essential function in both upstream and downstream applications. This rotating equipment ensures process flow and the safety of employees and the surrounding community.

One of the oldest sealing devices, compression packing is still very common in modern industries such as oil and gas, petrochemical, agriculture, pulp and paper, power generation, and mining. Compression packing is made from a range of soft and pliable fibrous yarn materials—from vegetable and animal fiber to many high-performance synthetic fibers.

A leak rate of one drip per minute equals about a liter (quart) of water in three days. For an O-ring on a submersible pump, that is a major problem. O-rings are often used for static seals on submersible pumps. Understanding what makes a good static seal and what causes one to leak is important for pump maintenance and repair technicians.

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Columns

In my last column (Pumps & Systems, October 2014), I explained that a capacitor’s current is totally out of phase with that of a motor’s magnetizing current.

I received a lot of feedback on my column “How Much Energy Do Pipes Remove?” in the September issue of Pumps & Systems.

A reciprocating power pump, as depicted in Figure 1, is a displacement machine. It has characteristics that are different than a centrifugal pump.

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For nearly 22 years, Pumps & Systems has been the leading technical magazine for pump users worldwide, delivering the most comprehensive pumping information across all the process industries.

For nearly 22 years, Pumps & Systems has been the leading technical magazine for pump users worldwide, delivering the most comprehensive pumping information across all the process industries.

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