ICEweb has nearly 100 Control, Instrumentation, Fire & Gas, Safety Instrumented Systems core pages and a total of more than 300 pages - It Really is Cool Engineering - By Engineers for Engineers it must be just about the World's first choice for Technical Information.
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Valve Technical Information Portal
ICEweb has great pages on the following Valve subjects.
Control Valves - Heaps of Technical Information here covering a vast array of Control Valve subjects! - Control Valve Sizing, Calculations, Control Valve Positioners, Actuators, Ancillaries, Diagnostic Tools, Noise Calculation and Prediction, Selection, Application and lots more.
Choke Valves - Technical Information - Selection, Application, Design, Actuators.
Composite Valves - Plastics provide great alternatives, see the technical papers here for more info.
Firesafe Actuators - A useful Accessory for ESD/SDV/BDV Valves.
High Integrity Pipeline Protection Systems (HIPPS) - These systems have been utilised in Germany for over 20 years and are proven to be extremely reliable in very rapid isolation of pipelines - Technical Papers Articles and Applications.
Power Plant Valves - Details on the design and manufacture of severe service valves in power plants, e.g turbine bypass stations, desuperheaters, pump protection valves and feedwater control valves.
Pressure Relief Valves- Just about Everything that you could wish to know! - Pressure Relief Valve Sizing, Specification and Selection , Design, Applications, Technical Papers, Technical Manuals, Engineering Handbooks, Calculations, Relief design, Bursting/Rupture Discs, Buckling Pin Technology, Vent Sizing, Useful Forums and More.
Self Regulating Valves - Self Regulating Valves integrate the measuring sensor, controller as well as control element in a simple pressure control loop - General Theory, Technical Papers, Maintenance and Applications.
Severe Service Valves - Sometimes a standard control valve is not suitable for severe service applications. These valves are specifically designed to operate in very arduous conditions - Specification and Selection , Design, Applications, Technical Papers, Technical Manuals etc.
Shutdown and Blowdown ESD Valves - Comprehensive information on these important valves which are used for Safety Instrumented System applications - Selection Guides, Sizing, Standards, Applications, Design, Specification, Diagnostics, Smart Positioners in SIS applications, Actuators and Accessories.
Material Selection - ICEweb's Corrosion pages have links to a vast array of Material Section Information.
Morin Actuators - Basic information
The Following links are compliments of our valued sponsor Metso Automation
Sound Solution Acoustic Leak Detection for Neles ValvGuard System Reduces
Hazards and Production Loss - Reijo Karjalainen - A
highly reliable and accurate online acoustic leak detection system is now
available for Metso Automation’s Neles ValvGuard™ testing and monitoring
system for emergency venting (ESV) valves. This system, which automatically
monitors normally closed venting valves, is capable of detecting internal
leakage as low as a few bubbles. The leak test can also be part of the complete
test stroke of normally open ESD valves.
Neles have a comprehensive range of Useful Application Reports covering valve applications in the Pulp , Paper, Chemical, and Refinery Industries.
Partial Closing with Neles Valveguard - Safety engineers throughout the world are struggling with the problem of how to best comply with new and more stringent safety requirements. New IEC requirements state that manufacturers must determine and document precise levels of safety and furnish quantifiable proof of compliance. In light of these requirements, BP feels it is necessary to reassess its traditional safety loop testing procedures. In particular, BP feels it is important to improve its safety valve testing procedures in order to drive costs down and improve plant safety.
Neles ValvGuard "exercises" to keep fit - This article describes automatically “exercising” the valve through a partial stroke at pre-programmed intervals.
Ensuring that your ESD Valves Work when needed - Emergency Shut-Down valves (ESD) are critical in protection of plant and personnel. These must operate in the event of plant malfunction or fire. The most important requirement for an ESD-valve is it’s reliability of operation (open or close) in an emergency. By it’s very nature, it is difficult to test that an ESD-valve is "available" without causing a plant upset. The plant is at risk however unless it can be shown that the valve is functioning properly. How can this be done ? Neles Controls has developed a unique system for testing on-line ESD-valves which uses a Jammer device. This can be offered for local manual use or automatic operation from a control room.
Need a Cryogenic Valve Testing Facility? - The cryogenic valve test centre at Metso Helsinki factory is one of the largest and most advanced dedicated valve test facilities in Europe. It offers customer inspectors the possibility of witnessing potentially hazardous testing operations through shockproof windows in the comfort of a protected, air controlled control room built to the latest safety standards, using a fully computer controlled and logged testing system.
ESD Valve Selection Guide - General ESD Valve Definition - This 14 page document is an excellent Reference - ESD/ESV valves are the final defence against process upsets. These valves have a function which requires much more reliable performance than standard remotely operated on-off valves. Still today ESD valves are ranked often as ordinary shut-off valves in specifications. Valves as such may still remain the same but being a part of Safety Instrumented Function (SIF) the performance expectations are much higher. There must be a prove for a reliable long term performance. MTBF (Mean Time Between Failure) number needs to be given to Safety calculations (SIL).
Gas to flare system ESV & ESD valves - This application note describes the requirements.
Taking Safety Valve Testing to the Next Level - Juha Kivelä - Today’s safety engineers face increasing challenges every day. Safety requirements are becoming more and more demanding, while the global market situation is simultaneously creating constant pressure to reduce costs. The IEC61511 safety standard requirements state that industrial processing plants must determine the Safety Integrity Level (SIL) for all the different areas of the plant. Based on the area SIL classifications, the plants must then be able to dispatch quantifiable proof of compliance with the requirements.
Bringing Intelligence to On-Off valves and Simplifying On-Off Valve Instrumentation - Juha Kivelä - Traditionally, on-off valves have been instrumented by at least a separate solenoid valve and limit switches. Quite often the desired functionality cannot be achieved by using only a solenoid valve and limit switches, which means that additional pneumatic accessories are needed. For example, if the process requires precise valve opening or closing stroke times, these cannot be guaranteed by using only a solenoid valve; but there is also a need for some extra accessories such as throttle valves.
Onshore Condition Monitoring of Offshore Valve Assemblies - Niklas Lindfors and Jarkko Räty - Especially in the offshore sector, there is strong emphasis on minimizing the number of staff working in hazardous offshore environments, without impacting on reliability. At the same time, it is expected that the availability of production and the life cycle costs of process equipment should be optimised. These requirements create the need to improve the capability to analyse control-valve data from offshore applications - to focus and plan service actions well in advance. In other words, to enhance the utilization of existing technologies and increase the use of specialist know-how in order to enable offshore personnel to carry out the required tasks effectively, safely and with minimal labour and disturbance to the process itself. (Go to page 4 to access this information)
The Value of Safety Valves - Juha Yli -Petays - Safety valves are used to protect processes, personnel and the environment against process disruption. Such valves are operated only in trip situations. But when they are required to operate, it is essential that they ensure that the valve is switched to the safety position. However, because these shutdown valves are rarely cycled, there is always concern over whether they will operate when actually needed. In practice, unless these valves are periodically stroked, it is virtually certain that they will not work when called upon to do so.
9.13 Depressurizing Systems used to Reduce the Failure Potential for Scenarios Involving Overheating - Sari Aronen -When metal temperature is increased due to fire, exothermic or runaway process reactions, the metal temperature can reach a level where stress rupture can occur. Depressurizing reduces the internal stress, extending the life of the vessel at a given temperature. A relief valve cannot provide adequate risk reduction or safety to depressurize a vessel: it can only limit the pressure from exceeding the process upset point. Therefore, depressurizing valves are used to reduce the risk of losing equipment integrity.