Posts Tagged ‘Measurement Products’

ABB to share its flow measurement expertise at forthcoming factory open day

March 13, 2015

We are delighted to announce that ABB Measurement & Analytics will be holding an open day at its Stonehouse factory on the 25th March to share its expertise on flow measurement and calibration.

The free to attend event is open to anyone involved in the specification, operation and maintenance of flowmetering equipment and will cover a variety of areas relating to flow measurement and calibration.

Starting at 9:30am, the day will begin with a session hosted by Flow Calibration Consultant, Dr. Bryan Franklin, who will present the three main flow calibration methods including Comparison, Volumetric and Gravimetric. He will also explain the advantages and associated issues of each technique, advising on the best technique to use for specific requirements.

Getting the best from your flow measurement will describe how to achieve optimum performance and reduced measurement uncertainty through correct flowmeter selection and installation. ABB’s Flow Design and Development Manager, Dr. Ray Keech, will also be on hand to discuss the key factors to consider and will reveal how the integrity and accuracy of a flowmeter can be further enhanced by carrying out in-situ verification.

These sessions will be followed by a tour of the Stonehouse flowmeter manufacturing facility and
ABB’s UKAS accredited flow calibration rig, the largest of its kind in Europe.

After lunch, ABB’s Service Manager, Joe Fudge, will outline the requirements of EN ISO 60534-2-3 and will explain the reasons for wet testing valves.

The final session, will see ABB’s Flow Product Specialist, David Bowers present the key features and advantages of the latest process flow technologies. The presentation will also cover ABB’s new generation flowmeters, including the FCB300 CoriolisMaster, SwirlMaster and VortexMaster, which offers enhanced flow calculation capability for integral mass and energy computation.

To register your interest in the free event, please email training@gb.abb.com or call 01785 285939,
ref. ‘Flow measurement open day’.

New application guides from ABB to boost power plant efficiency

April 2, 2014

The vast quantities of water used to produce steam in power generation applications mean that achieving well-balanced water chemistry is vital. To do so, optimum positioning of analytical instruments at key points throughout the water and steam cycle and water treatment plant at modern power stations is essential. This will in turn significantly improve plant efficiency and cost effectiveness.

Our new series of application guides, produced as part of the launch of the latest products in our Navigator analyser range, reveal how operators can optimise boiler chemistry and steam quality in power generation applications through the control of the parameters affecting steam generation efficiency.

Titled ‘Optimising power plant performance through silica monitoring’, the first of our four guides in the series, each of which focuses on a different parameter, reveals how careful monitoring of boiler conditions is essential to prevent corrosion and build-up of scale, protect the plant and ensure it remains in good working order.

Silica is a major culprit behind the build-up of hard and dense scale inside the boilers and turbines of power generation plants. Silica forms a dense porcelain-like scaling that cannot be removed even with acid. Silica scaling also has a very low thermal conductivity which means that even a 0.5mm build-up can reduce thermal transfer by 28%, reducing efficiency, leading to hot spots and eventual rupturing, resulting in plant failure.

However, the guide also reveals how our Navigator 600 Silica analyser, which helps cut the costs and maintenance associated with silica, can effectively control build-up through effective monitoring at multiple points around the steam generation and distribution cycle.

The second of the four guides in the series, ‘Improving dissolved oxygen control through online monitoring’, outlines how accurate measurement of dissolved oxygen is essential for efficient, cost effective, operation of boiler plant with minimum downtime.

The presence of even small quantities of dissolved oxygen in boiler water can severely impair a boiler’s operation, causing corrosion of its vital components and significantly reducing its working life. As such, the guide contains an easy-to-follow illustration, highlighting how an effective monitoring system should measure dissolved oxygen with an analyser at key points prior to the boiler.

Techniques for further reducing dissolved oxygen levels are covered in the guide, ‘Reducing dissolved oxygen through hydrazine dosing’. Even after deaeration, it is still necessary to administer some form of post treatment in order to achieve further reductions in dissolved oxygen levels.

The guide details how this can be done successfully by dosing the boiler feedwater with hydrazine. As a powerful reducing agent, hydrazine reduces oxygen to form nitrogen and water, which can help to further reduce dissolved oxygen levels to concentrations. Therefore, continuous monitoring of hydrazine throughout the feedwater loop can help to achieve the most effective ratio of hydrazine to dissolved oxygen.

The final guide in the series, ‘Controlling sodium concentrations through on-line analysis’, explains how the impact of sodium on power plant performance, one of the most important parameters to measure in power plant applications, can be minimised through accurate and reliable sodium monitoring.

If you would like to get hold of a copy of any of our new application guides, simply email: moreinstrumentation@gb.abb.com, providing details of which in the series are of interest.

Alternatively, for more information on our Navigator range of water analysers, check out the following video which details how the range can help optimise plant efficiency: http://www.youtube.com/watch?v=U92gwQS5HfU

Is your thermowell up to standard?

November 8, 2013

By Steve Gorvett, Temperature Product Specialist, ABB Instrumentation

Did you know that recent amends to manufacturing standards may mean that some of your thermowells aren’t up to scratch?
Thermowells are often so fundamental to plant safety that any design flaws can have disastrous effects. By way of example, in 1995 a thermowell failure in the coolant loop at the Monju fast breeder reactor in Japan closed the plant for the next 15 years. It’s for this very reason that there are tight industry manufacturing standards that govern thermowell production.

Following some catastrophic failures (including the Monju disaster) the American Society of Mechanical Engineers decided to amend the ASME PTC 19.3-1974 standard to which these thermowells were designed to.

The latest revision of the ASME PTC19.3 standard makes use of significant new knowledge about the behaviour of thermowells, compared to the criteria laid out in 1974. The standard evaluates thermowell suitability with new and improved calculations for various thermowell designs and material properties. It also takes some detailed information about the process into account.

In particular, the standard looks at the incidence of vortex shedding. This is the phenomenon where vortices formed in the wake of the thermowell move from side to side; this is what causes vibrations in the thermowell. If this vortex shedding rate matches the natural frequency of the thermowell, resonance occurs, and dynamic bending stress on the thermowell increases.

The frequency ratio is the ratio between the vortex shedding rate and the installed natural frequency. In the old standard, the frequency ratio limit was set to 0.8. The new standard stipulates that in some cases, the limit should be set to 0.4. The new possibility of having a much lower frequency ratio limit of 0.4 means tighter design constraints in many cases. As the majority of existing assets will have been designed to the 1974 standard, the new 0.4 frequency ratio means a lot of thermowells will NOT pass the new standard.

Re-evaluation and re-certification services are available. Operators will need to consider the implications when an existing thermowell fails the new calculation. If process conditions change, for example increased throughput for a part of plant, this should also be evaluated.
At a brownfield modification we recently examined for new process conditions, 29 existing thermowells were evaluated under existing and new conditions. Only six passed the new standard under existing conditions!

Bearing in mind what happened at the Monju fast breeder reactor in Japan, which did conform to the 1974 standard, isn’t it about time you reviewed your thermowell installations?

New accreditation for UK ABB Measurement Products factory provides added reassurance for oil and gas customers

October 18, 2013
ABB Measurement Products underlines safety credentials with new oil and gas accreditation

ABB Measurement Products underlines safety credentials with new oil and gas accreditation

We are thrilled to announce that our Measurement Products business has achieved ISO 29001 accreditation for its Workington factory, underlining its position as a world leader in the supply of Flow, Temperature and Level equipment to the Oil and Gas industry, and its commitment to safety and the environment.

Introduced in 2010, ISO 29001 provides a single quality document for the approval of the quality systems of organisations providing design, development, production, installation or service for use in petroleum, petrochemical and natural gas industry applications.

Our focus on the oil and gas industry, together with our determination to strive for the highest standards in the design and manufacture of instrumentation, were key factors in the decision to achieve ISO 29001 accreditation – becoming one of the first companies to do so. Already our Centre of Excellence for measurement in the oil and gas industry, the Workington site specialises in the design and manufacture of flow, temperature and level instrumentation for use in the oil and gas industry, as well as other industries.

Oil and gas is an extremely demanding market, with safety, accuracy and reliability at the top of its agenda for instrumentation. Workington’s unsurpassed capability not only enables ABB to meet all these needs, but demonstrates that our oil and gas customers can have absolute confidence in our products.

For more information, email moreinstrumentation@gb.abb.com or call 0870 600 6122 ref. ‘oil and gas instruments’.