Lifecycle Management of Pressure Relief Valves
Accurately specified and appropriately maintained pressure relief valves (PRVs) are critical to protect plant personnel and equipment against unexpected overpressure events.
#pressure-relief #automation
From Cannon Balls to Pressure Seals: Graphite for Sealing
From time to time, we re-publish well-received or particularly valuable articles that have previously run on VALVEMagazine.com so that those who might have missed them will be able to catch up on the best of the best.
#pressure-relief
Process Instrumentation in Oil and Gas
Process instrumentation is an integral part of any process industry because it allows real time measurement and control of process variables such as levels, flow, pressure, temperature, pH and humidity.
#pressure-relief
Unique Operating Dynamics of Trunnion-Mounted Ball Valves
For a very long time, the idea has existed that a trunnion-mounted ball valve can be opened under full differential pressure if the piping system can withstand the rapid increase in pressure and the forces induced by it.
#ball-butterfly-plug #pressure-relief #automation
Low Cracking Pressure in Chemical Processing Condensate Lines
Steam condensate is the liquid by-product formed when steam goes from the vapor state to the liquid state; this process occurs in a wide range of applications, across virtually all industries.
#pressure-relief
Wireless Technology Optimizes Production in Mining Operation
Natural Soda operates seven production well pairs in Colorado to produce saturated nahcolite brine for manufacturing sodium bicarbonate (baking soda).
Mining nahcolite requires very careful monitoring of temperature, pressure and flow to not only optimize production performance—but also to mine the product sustainably and protect the freshwater aquifer.
#pressure-relief #automation
Design Considerations for High-Temperature Sealing
With growing pressure to combat fugitive emissions and meet strict industry regulations, understanding the latest sealing technologies and design considerations for component solutions in severe applications is becoming increasingly critical.
#standards #pressure-relief
High-Pressure Test Enclosures for Valve Assemblies
As drilling operations explore ever greater depths and pressures, operating pressures for new valve assemblies are going beyond traditional limits.
#pressure-relief #standards
Avoid Water Hammer Problems in High-Pressure Hydraulic Systems
Water hammer, high-velocity fluid flow and contaminated hydraulic media are among the worst enemies of high-pressure hydraulic systems.
#water-wastewater #pressure-relief
The Dos and Don’ts of Isolating Pressure Relief Valves
Typically, isolation valves are used to block off a pressure safety valve (PSV) from system pressure, so that maintenance on the valve or related equipment can be conducted without a shut down.
#pressure-relief #maintenance-repair #automation
New Test Stamp and More Updates on Pressure Vessel Codes
A new test organization program and stamp has been authorized by the National Board of Boiler and Pressure Vessel Inspectors (NBBI), effective February 2016.
#pressure-relief #standards
Intermediate Class Valves, the Forgotten Classification
These days, piping designers use automated systems that default to standard classifications such as pressure classes of 150 to 2500 for valves and associated equipment.
#automation #pressure-relief #standards
Valve Positioners Offer Improved Control Valve Performance
By closely controlling the pressure and temperature of both heating and cooling mediums within heat exchange systems, the use of an automated control valve can help assure the efficient transfer of heat.
#pressure-relief
Introduction to Pressure Relief Devices - Part 1
When the pressure inside equipment such as boilers or pressure vessels increases beyond a specified value, the excess pressure may result in a catastrophic failure.
#pressure-relief #basics #automation
Back to Basics: Pressure Relief Devices, Part 2
In Part 1 of Pressure Relief Devices, which appears in VALVE Magazine’s Winter 2016 issue, the author stresses the vital role pressure relief devices play in keeping end-user industries that deal with pressurized equipment safe.
#basics #pressure-relief #automation
NAM Monday Economic Report - September 21, 2015
In deciding not to start raising short-term interest rates, the Federal Open Market Committee (FOMC) said, “Recent global economic and financial developments may restrain economic activity somewhat and are likely to put further downward pressure on inflation in the near term.” As such, the Federal Reserve has chosen to see how the next few months transpire before opting to begin the process of normalizing rates, likely at the December 15–16 meeting, depending on the strength of incoming data between now and then.
#pressure-relief
From Cannon Balls to Pressure Seals: Graphite for Sealing
Graphite has qualities that make it a great choice for certain applications in the manufacturing world.
#pressure-relief
Advanced Computational Fluid Dynamics Analysis in Control Valves
CFD is used in early field issue resolution where a small section of geometry is modeled in order to test a hypothesis such as low-pressure zones around corners, minimum temperatures, impingement angles for wear studies, etc.
#pressure-relief
Inexpensive Safe Water Tapped by Correcting Control Valve Output
The error output from a control valve can come from a variety of sources: uncontrolled input pressure, uncontrolled input flow rate, inaccurate orifice size or turbulent flow through the system which causes irregularity of flow rates through the system.
#water-wastewater #pressure-relief #controls
The Rationale Behind Valve Characteristics
Back in the “early days,” we were taught that, to properly control flow, we should select a linear valve characteristic when the valve controls more than 25% of the piping system pressure drop at full flow.
#pressure-relief #controls #automation