Emerson Exchange 365
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    • 115 posts
    • Updated 4 days ago
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    • 17 Nov 2017

    Improving Valve Total Cost of Ownership

    An important metric for driving continuous improvement in the process industries is total cost of ownership (TCO). One of the methods to lower these costs is to standardize and limit variations on the plant equipment across sites and geographic locations. In a Flow Control magazine article, Improve Total Cost of Ownership with Valves , Emerson’s Christof Lindner shares ways that standardizing equipment, suppliers...
    • 10 Nov 2017

    Reliable Switching Valves for Ethylene Production Molecular Sieve Applications

    For a valve, zero leakage is defined as no visible leakage when tested at high pressure with water and low pressure with air according to existing international standards. Some of these seat leakage standards for control and isolation valves include ANSI/FCI 70-2/IEC 60534-4, API 598, MSS SP-61 and ISO 5208. ANSI/FCI 70-2 and IEC 60534-4. Emerson’s Vanessa triple offset valves (TOVs) were the first to provide bidirectional...
    • 6 Sep 2017

    Bulk Liquids Storage Pressure Control and Overfill Prevention

    You only have to watch accident investigation videos such as the U.S. Chemical Safety Board’s Filling Blind video to understand the importance of pressure control and overfill prevention strategies for storage tanks in oil & gas liquids production, refining and distribution of petroleum products. This is precisely the subject of the next webinar in the Bulk Liquids Storage Terminals webinar series which will...
    • 18 Aug 2017

    Selection Criteria in Compressor Anti-Surge Valves

    Some of the most consistently popular posts here on the blog involve compressor anti-surge control. It’s a condition in centrifugal and axial compressors where a flow reversal condition can occur. Wikipedia defines centrifugal compressor surge as: …the point at which the compressor cannot add enough energy to overcome the system resistance or backpressure. [26] This causes a rapid flow reversal (i.e., surge...
    • 4 Aug 2017

    Top-Entry Triple Offset Valves in LNG Applications

    The global natural gas market continues to develop as additional liquefied natural gas (LNG) facilities come online across the world. These LNG facilities have many challenges including equipment such as valves which come in contact directly with the cryogenic process . Considerations not only include fit for the application, but also how to safely and effectively perform any ongoing maintenance. Alberto Bertamoni...
    • 7 Jul 2017

    Safety Instrumented Function Valve Selection

    Valves are critical components inside of safety instrumented functions (SIFs) since they do the work of touching the process flows to bring the plant to a safe state in the event of a safety demand. In a Valve magazine article, How Valve Selection Can Impact SIS in Refining Applications , Emerson’s Janine McCormick describes the important criteria in finding the right valve for the required safety performance...
    • 5 Jul 2017

    Managing Natural Gas Distribution Networks Pressure and Flow Rates

    The role of natural gas in the global energy mix continues to expand as it displaces coal and nuclear power as a baseload source of energy for electrical power generation. It is also an energy source for heating and cooking in many homes. Emerson’s Sergio Pasquali describes the role of smart skids in the natural gas distribution network in this 3:32 YouTube video, The Solution for Tomorrow Energy Systems . It...
    • 23 Jun 2017

    Pressure Relief Valve Fugitive Emissions Testing

    Earlier this week, the Valve World Americas Expo & Conference convened in Houston, Texas. This gathering provides an opportunity for flow control industry professionals to share experiences, insights and to collaborate to resolve common challenges. Emerson’s Dr. Amr Gado , D. Emile Tezzo , and Calvin Deng prepared a presentation, Pressure Relief Valves Fugitive Emissions Testing which was given by Amr at...
    • 20 Jun 2017

    Reducing Storage Tank Thief Hatch Emissions

    Regulations on emissions for process manufacturers and producers have continued to grow ever stringent. Storage tanks in oil and gas production sites account for a sizable percentage of volatile organic compound (VOC) emissions. To address these regulations, you may have seen last week’s news, New ultra-tight thief hatch reduces storage tank emissions, conserves tank contents . I caught up with Emerson’s...
    • 3 May 2017

    5 Questions for Digital Valve Controller and Safety Expert Riyaz Ali

    Let’s continue our 5 Questions for an Emerson Expert podcast series with our guest, Riyaz Ali . You may recall Riyaz from numerous posts about digital valve controllers and final control elements in safety instrumented system applications. He has almost 40 years’ experience in process control instrumentation and holds numerous patents related to use of digital valve controllers for process industries. Please...
    • 28 Mar 2017

    Educational Video on Control Valve Cavitation

    Wikipedia defines cavitation as: …the formation of vapour cavities in a liquid – i.e. small liquid-free zones (“bubbles” or “voids”) – that are the consequence of forces acting upon the liquid. It usually occurs when a liquid is subjected to rapid changes of pressure that cause the formation of cavities where the pressure is relatively low. When subjected to higher pressure, the voids implode...
    • 27 Mar 2017

    Control Valve Condition Monitoring Connected Services

    As sensors and final control elements grow ever smarter with digital diagnostics and communications paths, the need to make sense of this data to improve safety, reliability and efficiency also grows. Not only is improved analytic software required to help spot trends and abnormalities, but also experts to help provide guidance to put this information into action. In this 5:07 video, Emerson Connected Services Valve...
    • 17 Feb 2017

    Optimizing Gas Turbine Fuel Gas Supply

    The mission of this blog has always been to bring the experts around Emerson to you. Many of these folks also share their expertise in our Emerson Exchange 365 global user community and with LinkedIn posts. I’ll highlight an example I saw today. Emerson’s Rossella Mimmi published a post, Gas Conditioning: Why, When and How . In it, she opens: Natural Gas has become the desired fuel for gas turbines...
    • 21 Dec 2016

    Controlling Liquid Pipeline Surge Pressure

    The RBN Energy blog is a must read for those in the oil & gas upstream, midstream and downstream industries as they analyze the trends and global dynamics impacting companies. Posts such as The Flows They Are A-Changin’ – Westward Natural Gas Flows Into Texas On The Rise describe the flow reversals in natural gas in the U.S. as LNG plants are built along the Gulf coast and vast amounts of shale gas are...
    • 26 Oct 2016

    Selecting the Right Valve

    At the Emerson Exchange conference in Austin, Emerson’s Tony Foster and Leah Stanley and Vinson Supply’s Robert Lange presented, Selecting the Right Valve for Your Application to Reduce Cost and Increase Performance. Their abstract: Selecting the optimum valve for the application can sometimes be a daunting task, even with a “simple” on/off valve, especially when the process operates at high...
    • 25 Oct 2016

    Mitigating Cavitation and Outgassing Control Valve Damage

    At the Emerson Exchange conference in Austin, Emerson’s Jonathan Vance presented Outgassing and Cavitation: Not So Good Vibrations. Here’s the abstract: Outgassing and cavitation are two of the most common issues associated with control valves. Both phenomena often occur in high pressure drop applications and result in excessive vibration; however, the solutions to combat these critical applications vary...
    • 4 Oct 2016

    Safety Shutdown Valve Local Control Panel

    For process manufacturers and producers with safety shutdown applications, local control panels are often installed to provide visibility and control actions to operators locally out in the process area. Actions can be taken at these panels to initiate an emergency shutdown. I caught up with Emerson’s Riyaz Ali about how these local control panels work with safety shutdown valves (SSVs) and the digital valve...
    • 26 Aug 2016

    Testing Valves in Safety Instrumented Functions

    Safety instrumented systems are a critical part of process manufacturers and producers overall process safety management in protecting personnel, environment, equipment, property, reputation and image. In an Offshore Engineer article, Safety Instrumented Function loop ‘final element’ problems and solutions , Emerson’s Riyaz Ali describes the importance and ways to test the final control elements in...
    • 28 Jul 2016

    Stay on Top of Your Tanks

    For storage tanks, controlling emissions is a high priority concern. A pressure vacuum relief valve (PVRV) is a critical component in managing pressure. Knowing when and for how long it opens to release pressure also helps to determine what emissions occurred. In this quick 1:52 video, PVRV with Smart Wireless Technology , Emerson’s Steve Attri , explains how wireless technology can help determine if the PVRV...
    • 27 Jul 2016

    Adsorption Process to Separate Fluid Components

    Many techniques are used to separate impurities in fluids. One common method is to use the process of adsorption. In an online document, Control Valve Sourcebook — Chemical Unit Operations , adsorption is defined as: …a typical mass tran...
    • 13 Jul 2016

    How to Disassemble a Daniel Digital Control Valve

    Let’s continue our series of practical “ How-to videos ” with a closer look at disassembling a Daniel V788 digital control valve . The valves are used effectively in loading and offloading applications that require precise flow rate co...
    • 11 Jul 2016

    Monitoring Storage Tank Emergency Vents

    You will find low-pressure storage tanks in many industries including oil and gas, chemical, petrochemical, pharmaceutical, and food and beverage. Emergency vents have traditionally been used as the last line of defense in overpressure situations. ...
    • 7 Jul 2016

    Surge Relief for Oil and Gas Liquids Pipelines

    Authors: Rossella Mimmi and Dave Seiler Petroleum commodity releases can have serious consequences, so ensuring pipeline integrity is crucial for operators. Pipeline integrity is not just about preventing incidents, but is a holistic approach to the ...
    • 27 Jun 2016

    Sizing Control Valves for Outgassing Applications

    Ardent Photography . Some rights reserved. (CC BY-ND 2.0) Think about what occurs when you open a bottle of champagne. Immediately the pressure inside the bottle drops to atmospheric pressure. This is below the pressure that allows the dissolved carbon dioxide to remain in solution, thus the CO2 gas is released. This sudden release of the dissolved gas is referred to as “Outgassing.” You may have also noticed...
    • 26 May 2016

    Reducing Valve-Induced Unplanned Downtime

    Valves are the critical components in any process manufacturing and production operation that touches what is being produced. As such, they are subject to wear and tear. An ARC View report, Leveraging IIoT Technologies to Reduce Valve-Related Unplanned Downtime highlights key points from a presentation by Emerson’s Shawn Anderson at the ARC Advisory Group’s 20 th Annual Industry Forum. Here is the recap...