Oil and Gas

Actuators are required for a variety of operations throughout a multitude of different industries. With so many different potential applications, one would correctly assume that the options can often be overwhelming. Many of these actuators only require a base-level of sizing that is mostly driven by the load (for the bearings) and the desired motion profile (for the drivetrain).

Experienced process control engineers follow familiar, time-tested steps when presented with a new system to design and specify. Selecting a control valve for a process always requires the same information: collection of the process conditions, calculating required capacity and determining the materials that will survive in the process stream. But some process streams present more challenges than others.

In the world of industrial filtration, one of the most common activities involves the removal or displacement of water from another liquid. However, this process is further subdivided into three distinct phases. Chronologically, the first of these phases is particulate filtration (sometimes referred to as prefiltration).

Nothing will impede a successful plant turnaround like improper planning. One aspect of this planning is effective inventory management, and the keys to achieving this are properly identifying and communicating maintenance needs. Read the article below published in Hydrocarbon Processing Magazine to learn more.

There are many different differential pressure flowmeter designs to achieve long-term dependable, accurate flow measurement.

The key to making the proper decisions on condition monitoring is to understand what kind of information is required, how often that information is needed and what kind of budget is in play.

Taking a systematic approach to specifying a tank heater can help ensure the equipment specified delivers the heating performance desired. Factors to consider include the amount of energy needed, heat loss, direct or indirect heating, materials of construction, and controls.

The concepts of preventive maintenance and condition monitoring are not always characterized in a way that is entirely accurate. They sometimes seem to be treated as a one-size-fits-all service that many operators believe they need. However, these concepts can mean very different things depending on the application.

Industrial process plants are complex facilities with thousands of components that play a role in the operation of the plant. Not all these components hold the same consequences if they are improperly selected or if they fail to perform their designed function.

Recently an article was published that presented an easily constructed Excel sheet that estimates hydrodynamic noise in control valves1. A number of people have asked me if there is something similar for aerodynamic noise. 

A veteran of valve sizing with more than 40 years of experience provides his perspective on how to calculate the compressibility factor of a real gas for control valve sizing purposes.

Most control valve manufacturers include IEC 60534-8-4:2015 in their control valve sizing and selection software to predict control valve hydrodynamic noise. However, users who want to make quick noise predictions or who want to construct valve sizing applications, programming the above noise standard can be a daunting task. 

If one wants to be able to do accurate hand calculations, or construct a simple program or Excel sheet, the method described here gives answers that agree exactly with iterative calculations using the equations in the current version of the ISA and IEC standards.

The key to developing the ideal filtration mix which achieves the desired results is to gather as much information as possible so that the right decisions about filtration can be made. Kari Kohonen from Valin Corporation examines whether introducing strainer technology can be advantageous.

EIVs are a critical safety device for fuel-burning equipment and industrial processes that use flammable ingredients. Proper selection is critical for the safety of the workers in the plant, plant equipment and the surrounding communities.

The availability of an easily constructed Excel worksheet that calculates and graphs control valve installed gain in conjunction with the users preferred control valve sizing application has prompted a new interest in the application of these calculations. Three examples are shown here.

For any process where temperature needs to be monitored or controlled, a thermal loop is required. Typically, a process that contains a thermal loop includes some key elements: the process itself, the temperature sensor or transmitter, the temperature controller and the power controller. 

Positioner selection deserves due diligence and consideration of several factors before making any firm decision. Theres certainly not a typical one-size-fits-all approach for positioners; an uninformed choice can lead to undesirable consequences.

For a power plant to run as efficiently as possible, proper filtration is a critical part of the equation.

Appropriately specifying trip valves in the world of natural gas liquification is a critical element. Failing to do so effectively can risk the lives of operators and maintenance personnel working in close proximity to the equipment, and can sometimes cause irreparable damage to expensive turbomachinery.

The process industries have control valves with actuators designed to open, close, and control them. Many people prefer pneumatic actuators given their long history, reliability, and high performance.

In this article, featured in Process Heating Magazine, Ryan Kraus discusses the various criteria to consider when selecting a circulation heater.

A simple process method based on the principle that piping pressure losses are approximately proportional to flow squared is presented.

While globe control valves are still a viable solution, modern rotary control valves offer many advantages and serve as a more suitable solution in certain process applications.