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Last updateTue, 25 Jun 2019 4pm

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Technical

Cybersecurity in Manufacturing: How to Keep the Threats at Bay

The Industrial IoT (Internet of Things), Industry 4.0 and other smart manufacturing initiatives have successfully increased the productivity and efficiency of valve manufacturing. By implementing advanced technologies such as predictive maintenance, remote support and synchronization between production activities, manufacturers significantly cut operational costs and stay competitive in today’s market.


Small Modular Nuclear Reactors: Gaining Momentum

NuScaleThe concept of small nuclear reactors may seem new, but small reactors have been around for more than 50 years, used in naval vessels such as submarines, aircraft carriers and ice breakers. A new generation of land-based small modular reactors (SMRs) has been under development for the last several years. Learning from the advantages and problems of traditional, large reactors, the designers of these new SMRs are making them more economical to build and safer to operate.

Preventing Problems Caused by Steam Condensate

In a webinar available on the DFT Inc.’s website, Arie Bregman, vice president and general manager at the valve manufacturer’s Exton, PA site, presented background and guidelines for managing condensate in steam systems. This article is based on that webinar.

Many, if not most, industries use steam in some part of their operations for power generation, heating, chemical processing or other purposes.

Understanding Torque-Seated and Position-Seated Valves

When commissioning an isolation valve, you must ask yourself whether it is torque-seated or position-seated. AWWA M49 defines a torque-seated valve as a one that “seals tighter based on how much torque is applied to the closure member against the seat.” Conversely, a position-seated valve is defined as a valve that “does not seal tighter based on how much torque is applied to the closure member at the seated position.” In fact, a position-seated valve may allow the closure member to pass completely through the seated position because it has concentric rotation.

Top-Entry Valves in Offshore Oil and Gas

Why are offshore pipeline valves so important? Of the valves used in an offshore plant, the pipeline valves are the largest, heaviest, most expensive and complex valves, and have the longest delivery time. The aim of this article is to provide information about top-entry pipeline valves used in the offshore oil and gas industry, including their general features and some design considerations.

Figure 1 shows the export pipeline from the platform to the shore. The pipeline includes two parts, topside and subsea, subject to two different design codes, ASME and DNV. The export-line valves are installed in the pipeline on the platform upstream of the subsea section, and they are designed based on ASME code.

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