new members p2 • members news p5• talking technical p8, 10 ... · capital cost savings and as a...

12
P1 PUMP ACTION NEWSLETTER WINTER 2012 PUMP ACTION New members p2 • members News p5• talkiNg techNical p8, 10 & 11 • pump ceNtre coNfereNce p6 & 7 • traiNiNg News p12 WWW.PUMPCENTRE.COM Date Announced for 2013! The Pump Centre has confirmed that its annual Pumps & Systems Conference & Exhibition will be held on Thursday 23rd May 2013 at the International Centre, Telford. The main technical conference will be based on the theme of Sustainable Pumping. There will be four breakout session rooms each with experts from across the pump industry giving presentations on a wide range of relevant topics. The floor area for next year’s exhibition has also been increased by over 30% to accommodate around 100 of the UK’s leading manufacturers and suppliers – it is now the premier exhibition in the UK for pumps and pumping. All delegates will be able to access the conference, the breakout sessions and the exhibition FREE of CHARGE as long as they pre-register. For more information: Contact Jim Eaves on 07968 707753 or visit www.pumpcentre.com Pump Centre Members Support – Help for Heroes The Pump Centre held a charity raffle, during its Conference Dinner on the 1st May 2012, on behalf of Help for Heroes. The Help for Heroes charity was set up in 2007 and it provides support to members of the armed forces that are injured in current conflicts. It spends every penny possible on making grants that provide practical and direct support for the wounded. The grants help with; upgrading living accommodation, rehabilitation, holidays for the wounded & their carers, donations to support associations and much more. All the raffle prizes were donated by Pump Centre member companies. The conference dinner guests, who paid to enter the raffle, generated over £2,900 for the charity. Calling Young Engineers The Pump Centre presented its annual Young Engineer of the Year award at the Pump Centre Conference on the 2nd May 2012. This year’s winners in the Professional and Apprentice/ Craft Categories were: Ben Gannon of Severn Trent Water and James Forder of ERIKS, respectively. Ben and James are shown on page 6 accepting their award from the Pump Centre Chairman, Mike Rush (Head of Mechanical & Electrical Engineering at United Utilities). Contact Details: Tel: 01925 843512 Fax: 01925 843500 Email: [email protected] www.pumpcentre.com

Upload: others

Post on 24-Aug-2020

0 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

p1

PumP Action newsletter WINTER 2012

P u M P A c t i o n

New members p2 • members News p5• talkiNg techNical p8, 10 & 11 • pump ceNtre coNfereNce p6 & 7 • traiNiNg News p12

www.PuMPcenTre.coM

Date Announced for 2013!the Pump centre has confirmed that its annual Pumps & systems conference & exhibition will be held on Thursday 23rd May 2013 at the international centre, telford. the main technical conference will be based on the theme of sustainable Pumping. there will be four breakout session rooms each with experts from across the pump industry giving presentations on a wide range of relevant topics. the floor area for next year’s exhibition has also been increased by over 30% to accommodate around 100 of the uK’s leading manufacturers and suppliers – it is now the premier exhibition in the uK for pumps and pumping.

All delegates will be able to access the conference, the breakout sessions and the exhibition Free of chArge as long as they pre-register.

For more information: contact Jim eaves on 07968 707753 or visit www.pumpcentre.com

Pump centre Members Support – help for heroesthe Pump centre held a charity raffle, during its conference Dinner on the 1st may 2012, on behalf of Help for Heroes. the Help for Heroes charity was set up in 2007 and it provides support to members of the armed forces that are injured in current conflicts. it spends every penny possible on making grants that provide practical and direct support for the wounded. the grants help with; upgrading living accommodation, rehabilitation, holidays for the wounded & their carers, donations to support associations and much more.

All the raffle prizes were donated by Pump centre member companies. the conference dinner guests, who paid to enter the raffle, generated over £2,900 for the charity.

calling Young engineers the Pump centre presented its annual Young engineer of the Year award at the Pump centre conference on the 2nd may 2012.

this year’s winners in the Professional and Apprentice/craft categories were: Ben Gannon of severn trent water and James Forder of eriKs, respectively.

Ben and James are shown on page 6 accepting their award from the Pump centre chairman, mike rush (Head of mechanical & electrical engineering at united utilities).

contact Details: Tel: 01925 843512 Fax: 01925 843500 email: [email protected] www.pumpcentre.com

Page 2: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

PumP Action newsletter winter 2012

The uK’s leading Producer of Thermoplastic Storage Tanks & Vessels since the early 1960s chem resist limited, based in Dewsbury, west Yorkshire has enjoyed a reputation as the uK’s leading producer of thermoplastic storage tanks & vessels.

through the company’s Fluid transfer division it is also a distributor of the world’s pre-eminent pump ranges and the provision of valves, level controls and accessories to cater for even the most aggressive fluid transfer applications.

Add to that the extensive knowledge and experience of the chem resist Fluid transfer team and it comes as no surprise to find that customers are fulsome in their praise – as can be seen on their website (www.chemresistfluidtransfer.com).

Just two examples...

“the service we received from chem resist can best be described as brilliant!”

and

“the speed of turn-round was fantastic. we requested a magnetic drive pump and motor at 9 a.m. and by 11.30 a.m. the unit was assembled, tested and ready for collection. exceptional service!”

exacting requirementsAs Director neil williams says: “if you’ve got a pump problem, we’ve almost certainly got the answer!”

regular customers range from local or regional companies perhaps needing replacement pumps, right through to major projects for national companies such as smithKline, thames water and Kodak...

in order to meet the exacting requirements of this diverse customer base chem resist has secured the uK distributorship rights for many leading fluid transfer brands including Almatec, world chemical, munsch, Pan world and schmitt together with neptune Diaphragm Pumps and Grun Drum Pumps.

enhancing technologyneil williams says the chem resist customer service offering is augmented by their association with Plastomatic and their ongoing aim of continually enhancing the technology of liquid pressure and flow control to provide standard and custom-designed solutions for difficult applications.

Again, working with Flowline – a globally recognised supplier of industrial instrumentation – means chem resist is able to offer expert level measurement and control solutions for corrosive chemical, water and wastewater applications.

located right at the junctions of the m1 and m62 motorways, chem resist is perfectly located to deliver a fast and efficient response to any fluid transfer need.

website: www.chemresist.com

Your vacuum and overpressure supplier in the waste water industryBusch is the leader in industrial vacuum pump design and overpressure technology. Founded in 1963 by Dr. ing. Karl Busch and his wife Ayhan Busch with manufacturing plants in Germany, switzerland, usA and the uK, Busch uses the latest manufacturing methods and technologies. the company provides complete solutions through products, systems, and service for vacuum and overpressure applications. Present with 56 companies in 39 countries with over 2200 employees worldwide Busch offers the broadest range of vacuum pumps and overpressure blowers for industrial use in many areas of the waste water industry.Busch products consist of almost every type of vacuum and pressure equipment including rotary vane, claw, positive displacement blower, tri lobe blower, side channel blower, screw and liquid ring pumps.consisting of industry specialists within the waste water sector, engineers with many years of extensive experience in the industrial

vacuum and blower market, Busch provides customers with advice and support from selecting the vacuum pump or blower through to after sales service support and rentals available 24/7 nationwide.

website: www.busch.co.uk

p2

new memBersPumps n Valves n Systems

KSB: Turning the tide on energy needs

KSB Limited n 2 Cotton Way n Loughborough n Leicestershire n LE11 5TF n 01509 231872 n www.ksb.com

Energy producers the world over rely on KSB. Our pumps do more than just assist the generating

process. By reversing the flow of water, the impeller starts turning in the other direction, and the pump

operates in turbine mode making energy generation and recovery straightforward. This system delivers

capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs)

provide a solution wherever energy is required, and proves again that KSB offer a wide choice of

applications, as well as products.

KSB draws on extensive know-how and many years of experience to use standard design pumps to be

used as turbines. So let our expertise work for you and experience the quality of our products.

Pump Manufacturer of the Year

Page 3: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

p3

Pumps n Valves n Systems

KSB: Turning the tide on energy needs

KSB Limited n 2 Cotton Way n Loughborough n Leicestershire n LE11 5TF n 01509 231872 n www.ksb.com

Energy producers the world over rely on KSB. Our pumps do more than just assist the generating

process. By reversing the flow of water, the impeller starts turning in the other direction, and the pump

operates in turbine mode making energy generation and recovery straightforward. This system delivers

capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs)

provide a solution wherever energy is required, and proves again that KSB offer a wide choice of

applications, as well as products.

KSB draws on extensive know-how and many years of experience to use standard design pumps to be

used as turbines. So let our expertise work for you and experience the quality of our products.

Pump Manufacturer of the Year

Page 4: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

Tomorrow’s technology today

Time to replace old blowers. Install tomorrow’s technology today. The new Atlas Copco ZS blowers, with superior screw technology, are on average 30% more energy efficient than traditional rotary lobe blowers, providing you exceptional reliability and efficiency, while driving down energy costs and saving you money. It all adds up to sustainable productivity for today’s low carbon economy.

Want to learn how you can enter a new future with Atlas Copco’s low pressure blowers and compressors? Visit www.efficiencyblowers.com or call us on 0800 181085.

Atlas Copco CompressorsAtlas Copco Ltd, Swallowdale Lane, Hemel Hempstead, Herts HP2 7EAPhone: 0800 181085 Fax: 01442 234791 E-mail: [email protected]

Kick out old blowers and start saving energy with our screw blowers

Page 5: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

p5

www.PuMPcenTre.coM

MeMbers news

new water committee for the iMeche in recognition of the number of mechanical engineers now working within the water industry the imeche has established a new water committee to supplement the work of the institution’s Fluid machinery Group.

the new technical Activity committee provides a focal point for institution members and is also keen to offer support to those seeking to become chartered. in addition the committee is establishing good links with key players in the sector such as: water utility and supply companies, engineering consultancies, the institute of water, the environment Agency, ciwem etc.

the institution is particularly keen to work closely with the Pump centre and was very grateful for the opportunity to have an exhibition stand at this year’s conference. if you wish to find out more please contact:

Kevin Gaunt ([email protected]) Darren Hollins ([email protected]) or mark Keen ([email protected])

get up to speed with water industry Processes & equipment The Pump centre has developed a new one-day introductory course.

the course is being held on 10th october 2012 at the rhinewood country House Hotel, nr warrington, wA3 5BB. it is intended to give an introduction to the physical and bio-chemical processes used in the treatment of water and waste water, and of the mechanical plant

used to support those processes. it will be of benefit to engineers who are required to design or commission new treatment works, carry out modifications and refurbishment of existing works, approve designs submitted by sub-contractors, or advise clients on possible improvements to existing systems.

using a series of demonstrations and presentations, the course will provide an overview of the different processes available to the designer, and discuss the factors affecting equipment selection.

Delegates should gain an appreciation of: the basic processes available for water treatment. the mechanical equipment available. the factors affecting choice different of equipment; their

advantages and limitations. How to use hydraulics to regulate flow through the various

process stages.

For more details contact Jim eaves on 07968 707753.

Atlas copco welcomes changes to wiMeS blower performancemeasurement specificationsAtlas copco compressors has welcomed the latest revisions to the water industry mechanical and electrical specifications (wimes), which have placed increased emphasis on measuring blower performance according to the iso 1217 standard for displacement compressors. rob Boughton, low Pressure sales manager at Atlas copco compressors, explains: “Atlas Copco has always believed and stated that providing the flow figures of a blower at the outlet, as specified under ISO 1217, is the only accurate way to measure and compare performance between different blower technologies. The increased emphasis on ISO 1217 under the revised WIMES will hopefully lead to a significant change in the industry’s approach to blower performance measurement, which has traditionally been stated as an inlet flow measurement. ISO 1217 will ensure customers are provided with a truer picture of blower efficiency and the volume of air that is supplied to their process.”

in addition to the increased emphasis on measuring blower performance according to iso 1217, the guidelines have also now been revised to include rotary screw blower technology for the first time. under this new wimes 8.04 specification, water utility companies and contractors can now take advantage of the benefits of Atlas copco Zs rotary screw blowers, such as reducing energy costs by an average 30% compared to lobe technology. the decision follows

a recent three-month review of blower technology by the Pump centre, the organisation responsible for compiling the guidelines, of which Atlas copco compressors is now an official member.

roger marlow, Principal consultant at the Pump centre commented: “The decision to include rotary screw blower technology in the WIMES reflects the evolving needs of the water industry. Energy efficiency has become increasingly important to water companies keen to reduce total cost of ownership, which is why more and more companies are now turning to rotary screw blowers.”

the future of the environment and water purity is of great concern to the industry. the inclusion of iso 8573-1, class Zero, the standard for the provision of 100% oil-free air, as an official requirement under the wimes now gives customers total peace of mind by removing any possibility of oil contamination from the blower discharge air. As the world’s first manufacturer to receive class Zero certification for its products, all of Atlas copco’s blowers have been tested and certified to provide 100% pure, clean and oil-free air.

website: www.atlascopco.co.uk

Tomorrow’s technology today

Time to replace old blowers. Install tomorrow’s technology today. The new Atlas Copco ZS blowers, with superior screw technology, are on average 30% more energy efficient than traditional rotary lobe blowers, providing you exceptional reliability and efficiency, while driving down energy costs and saving you money. It all adds up to sustainable productivity for today’s low carbon economy.

Want to learn how you can enter a new future with Atlas Copco’s low pressure blowers and compressors? Visit www.efficiencyblowers.com or call us on 0800 181085.

Atlas Copco CompressorsAtlas Copco Ltd, Swallowdale Lane, Hemel Hempstead, Herts HP2 7EAPhone: 0800 181085 Fax: 01442 234791 E-mail: [email protected]

Kick out old blowers and start saving energy with our screw blowers

Page 6: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

p6

PumP Action newsletter winter 2012

PUMP Centre conFerence & exHiBition 2012calling Young engineersif you have any young engineering of staff why not give them the recognition and encouragement they deserve by nominating them for the Pump centre Young engineer of the year. the award is also open to non Pump centre members, so long as a member company is willing to endorse the nomination.

the award is split into two categories Professional engineer and craft/Apprentice engineer. the stature of the award has been growing steadily since it began in 2008 and it has proved beneficial to many of the winners including mellish Kett of severn trent water who gave the following endorsement:

“I won the Young Engineer award in 2009 and I would encourage anyone who works in an industry involving pumps to apply, which is a straightforward process. Winning has enhanced my CV and career progression, leading to being asked to join the IMechE Fluid Machinery Group and securing the role of Rotodynamics Standards Manager within Severn Trent, which are at least partially thanks to the recognition I received from the Pump Centre.”

A list of the previous winners of the award are shown in the table below.

if you want more information about the 2013 awards, please contact John Howarth [email protected]

the Pump centre presented the 2012 Young engineer of the Year award at the Pump centre conference on the 2nd may.

this year’s winners in the Professional and Apprentice/craft categories were: Ben Gannon of severn trent water and James Forder of eriKs, respectively.

Current and former Pump Centre council members with their 20th Anniversary Awards.

James Forder (ERIKS) winner of Apprentice/Craft Category receiving his award from Pump Centre Chairman Mike Rush

Ben Gannon (Severn Trent Water) winner of Professional Category, receiving his award from Pump Centre Chairman Mike Rush

Young engineer Award – roll of honour

winner company2008

nick wills AesseAl2009

Apprentice/craft categorynicole cuerden Biwater treatment

Professional categorymelish Kett severn trent water

2010Apprentice/craft category

craig Viner severn trent waterProfessional category

lewis rogers Black & Veatch2011

Apprentice/craft categorylee meekison itt water & wastewater

Professional categorymark Horsley cemA

2012Apprentice/craft category

James Forder eriKsProfessional category

Ben Gannon severn trent water

Page 7: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

p7

www.PuMPcenTre.coM

PUMP Centre conFerence & exHiBition 2012Pump centre celebrates 20 yearsthe Pump centre’s 20th anniversary prompted a move to a much bigger venue for its 2012 conference & exhibition. the centre has undergone substantial growth in the past 10 years and to underscore confidence in its future, the international centre in telford was selected as the venue for its annual event, which took place on 2 may.

the Pump centre was set up in 1992 with support from the Department of trade & industry, and membership, which has grown over the past ten years, is at a record high of 119 member companies. the centre offers a wide range of important services including:

technical support collaborative projects conferences and events training network and marketing activities

more than 55 exhibitors lined up for the exhibition, while the conference theme for 2012 was Pumps and systems, with a focus on successful industry collaborations.

Pump centre manager John Howarth said that pulling the programme together was more challenging than in other years, for this reason, but says the theme

“is very apt, because supply chain collaborations have been a core Pump Centre principle since its launch”.

Participants appreciated the unequalled opportunity to network with their peers, explain their equipment to buyers and engineers and catch up on the latest products and technical developments that the event offered.

Pumping out memoriesthe Pump centre’s 20th anniversary dinner took place on 1st may at the international centre, telford and included a speech from the inaugural Pump centre chairman Bob went, who took a trip down memory lane.

members past and present came together for a night of relaxation and networking over a three course dinner.

Bob went hosted a table of special guests who were all involved with the Pump centre during its early years and played a significant part in establishing the foundation from which the centre has grown. their contribution was recognised on the night, when they were presented with a special “20th Anniversary Award” in appreciation of the invaluable support and assistance they had given to the Pump centre.

Technical break out sessionExhibition area

The table of special guests hosted by Bob Went (Inaugural Pump Centre Chairman)

The International Centre provided the perfect venue

Page 8: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

PumP Action newsletter winter 2012

talking tecHnicAl

p8

Don’t pump away your profits!Pumps account for a major percentage of the total invested capital of the UK water industry. Failure to operate these assets in the most economic waycosts the industry £10,000’s annually!Paul Poste of Pruftechnik Ltd. explains how you canmaximise the operation of these utilities.

throughout the uK water industry pumps and pumping systems account for a significant percentage of the total industry operating costs. According one department of energy source up to 50% of the entire energy consumed can be attributed to pumping systems. combined with capital investment and maintenance costs, pump systems represent more than 50% of the entire capital investment of a water company. no wonder then that great care is taken by engineers to specify the correct and most energy efficient pump for the application. All too frequently, however, the care and attention given to specification is let down by inadequate attention to proper installation and future maintenance. without careful attention to detail in the installation of all pumps the plant operator is simply pouring money down the drain.

Assuming correct selection and efficient operating specification, what can possibly go wrong during the operation of the system to create such a problem, and what if anything can a mere engineer do to contribute to a more efficient and trouble free plant operation?

correct initial installation of the pump set on site will have the most fundamental effect on the operating condition and performance over the lifetime of the pump. this means that the pump set should be installed on a level foundation; have a well constructed rigid bedplate; any connecting pipe work should be properly supported on pipe hangers and stands that ensure that the pump is not hung from the pipe work. And finally the alignment between the driver and the driven components of the pump set should be checked and adjusted with the pipe work both connected and disconnected, (there should be no difference between the two sets of alignment readings).

Figure 1: Thermal image of align-ment condition at 0.5mm and 0.05mm misalignment. Source: institute of Thermography inc.

the alignment of the pump set should not rely on the fact that flexible couplings are fitted and can according to the coupling manufacturer tolerate substantial misalignment. the coupling invariably can withstand misalignment of 1 or 2 mm, but the pump set components cannot. misalignment does not simply disappear as if by magic. it is passed on to the adjacent components of the pump set such as mechanical seals and bearings, these components are quickly damaged by the forces of misalignment which are

transferred to them. Fig 1 shows graphically the effect of heat transfer into key components caused by misalignment. Good shaft alignment practice will ensure the designed life and efficiency of the pump set is achieved and will significantly reduce life time operating costs of the pump system on the plant.

Figure 2: incidence of vibration alarms caused by misalignment. Source: Shell uK

in some industries it has long been accepted that shaft alignment is an important contributor to plant reliability, shell uK at its ellesmere Port refinery produced statistics showing the reduction in plant failure when laser alignment of its rotating plant was introduced (Fig 2). this type of quantifiable reduction in unscheduled plant shutdown has been mirrored many times worldwide. But there are still many tens of thousands of pumps operating with excessive alignment and being repaired every year because that is what is expected to happen. Additionally few engineers have had the tools to demonstrate and indeed calculate for senior managers the cost of misalignment before they embark on the implementation and cost of good shaft alignment practice on plant.

For the uK water industry there are of course many difficulties in applying standards across a widely dissipated and very large pump asset base, but the effort to implement acceptable standards is well worth the ultimate reward.

Pruftechnik, a long established manufacturer of shaft alignment systems have worked closely with key suppliers and process equipment users to provide a tool which engineers can use to calculate these costs. the result, an roi (return of investment) calculator that can be applied to virtually any shaft coupled pump system and can reveal the potential costs that can accrue from poor alignment of the pump set.

the calculator takes into account key costs such as: wasted energy – it costs more money to drive a badly alignedpump set.

Premature mechanical seal failure – bad alignment impacts directly on mechanical seal life and replacement intervals.

Bearing failure and replacement – when pumps are stripped for replacement of seals new bearings are usually installed irrespective of condition.

unnecessary labour costs – repair of prematurely failed pumps cost money.

the roi calculator can be obtained free of chargecontact: [email protected]: www.pruftechnik.co.uk

Page 9: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide
Page 10: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

PumP Action newsletter winter 2012

talking tecHnicAl

p10

Pump used as turbine – making optimum use of hydropower with KSBA pump as turbine can use water power to its full potential. it generates additional energy in systems by reducing pressure differences or by making use of heads and water flow.

KsB limited, with south west water as the end user, has successfully supplied, via may Gurney, the largest ‘Pump as turbine’ (Pat) to date as part of a hydro-electric scheme.

the scheme - at Avon Dam near Buckfastleigh in Devon – comprises two Pats supplied by KsB, one of which generates on the compensation flow and a larger unit which generates on spill flows in the winter months.

the smaller compensation flow turbine passes 60l/s at 26.7m head, generating an average of 11kw of electrical power at an overall efficiency of 70% - 24 hours a day and almost 365 days per year. the only down time is for scheduled maintenance or any faults or loss of mains connection. the unit therefore has the potential to generate 96,000kwh per annum.

the larger spill turbine passes 650l/s at 26.7m head, generating 140kw of electrical power at an overall efficiency of 80.5%. this unit was sized to make maximum use of potential spill volumes in winter months and during prolonged wet periods. Based on historic spill data at the site, the unit will run on average for 2,560 hours per annum, generating 358,400whr. combined, the two turbines will provide enough power to meet the average annual needs of 137 homes*.

KsB’s water & wastewater Project team worked alongside may Gurney’s design team to put forward the most cost effective solution, while at the same time ensuring maximum power generation for south west water’s budget.

the scheme is located within a former meter house at the foot of the dam. may Gurney undertook civils works to redirect the 700mm reservoir outlet source pipework to the meter house, with new discharge pipework from the two turbines being taken into the stilling chamber at the base of the dam.

with the spill KsB Pat offering over 80% efficiency, this solution compared exceptionally well against other turbine suppliers. the installation exceeded expectations in power generation, asset cost and our key goal to minimise noise implications within sensitive sites. Due to the simplified design of the KsB Pat the overall operation and maintenance costs will also be kept to a minimum for our clients.

A bespoke control panel allows the system to be operated remotely from south west water’s Avon water treatment works. in the event of power outage from the local distribution network operator (Dno), the system’s control software ensures that the turbines are taken off line and that the water course downstream is protected, by maintaining control of the compensation flow through a battery backed bypass valve.

the Avon scheme is the latest in a series of hydro-generation schemes for south west water, and KsB along with may Gurney are in the process of scoping and tendering for additional works for south west water and other water utility companies.

stuart wallis, KsB’s General manager for water & wastewater said:

“With rising energy costs and finite conventional energy resources calls for alternatives and solutions have become louder. This is why KSB have increased their already strong focus on the renewable market. The Hydro projects we have been undertaking with May Gurney demonstrates the positive outcome of collaborative working. By using the unique skills & disciplines of both organizations has allowed existing technologies to deliver a number of projects with innovation & exceeding the expectations of the client.”

“The packaged Pump as Turbine solution from KSB & May Gurney captures previously untapped free energy. The capital cost and associated payback period benefit of installing our solution is far greater than that of comparative traditional turbine solutions and other new alternative solutions being offered to the market.”

“By listening to the needs and requirements of the market, KSB & May Gurney, will invest additional time and resources to develop the Pump as Turbine solution in line with the needs of our clients.”

website: www.ksb.com* compiled using ofgem Factsheet 96 “typical Domestic energy consumption Figures”for average household consumption.

Page 11: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

www.PuMPcenTre.coM

talking tecHnicAl

p11

About This guidethis guide introduces the factors which affect circuit breaker selection:

load Fault level Discrimination

(AcBs) and (mccBs) have common features. However, there are some fundamental differences in application that should be considered.

loadmccBs are available up to 4000A from terasaki, but become less cost-effective for 2000A and above. the advantage of mccBs is their compact size. An AcB is physically larger, but more cost-effective for higher ratings.

Fault limitationin a short circuit the contacts of terasaki mccBs open before the first peak of the current waveform. the fault current never reaches its peak, and the fault energy allowed downstream is limited.

AcBs are selected for their ability to withstand fault current rather than limit it. A typical AcB will open a short-circuit in between twenty-five and thirty milliseconds.

Fault levelcircuit breakers must be capable of safely interrupting the maximum potential short-circuit current at their location in the circuit.

Discrimination (Selectivity)the incoming device is the first line of protection downstream of the transformer, it protects:

the transformer windings; the conductors between transformer and switchboard the switchboard main busbars

Discrimination relies on the incoming device withstanding the fault. the easiest way to guarantee discrimination without further calculation is to ensure that incoming breakers withstand the maximum potential shortcircuit current for at least one second.

to make selection even easier, all terasaki AcBs can withstand fault currents up to their breaking capacity (icw, (1s) = ics).

website: www.terasaki.com

F ault Interruption Times

<5m

s: c

urre

nt li

miti

ng

>30m

s: in

adeq

uate

pro

tect

ion

TemB reak 2MC C B

TemP ower 2AC B

Fault in Outgoing Circuit

Incoming device withstandsfault current

Short circuit fault in outgoing circuit

Outgoing device interruptsfault current

X

X X X

Typic al With s tand R atings

Typical Withstand Ratings

ACB

Ic w (kA )100

Ic w (s )0.3 1.0

15negligible

Category B MC CB

Category A MC CB

how to choose: Air circuit Breaker or Moulded case circuit Breaker

I nnovators in Protection T echnology

Fig. 1

Fig. 2

Fig. 3

Fig. 4current-carrying capacity

in (A) according to iec 60947-2

Short-circuit withstand

icw (kA, s) according to iec 60947-2

withstand = Fault level = guaranteed Discrimination

icw (1s) = ics = guaranteed Discrimination

ultimate Breaking capacity (two short-circuit interruptions): icu (kA) according to iec 60947-2Service Breaking capacity (three short-circuit interruptions): ics (kA)according to BS en 60947-2

Page 12: New members p2 • members News p5• talkiNg techNical p8, 10 ... · capital cost savings and as a consequence payback periods are reduced. Pumps used as turbines (PaTs) provide

p12

PumP Action newsletter winter 2012

training newsTraining & Awareness Day Programme 2012

TiTle DATe Full PricePumps for Beginners & intermediates (2 days) 25-26 sept 2012 £550 + VATPumps for Beginners (day 1) 25 sept 2012 £350 + VATPumps for intermediates (day 2) 26 sept 2012 £350 + VATwater industry Process & equipment 10 oct 2012 £350 + VATunderstanding wimes – Pump Procurement 11 oct 2012 £120 + VATcontract law for engineers (2 days) 23-24 oct 2012 £550 + VATPump system – control, monitoring & Automation (Glasgow) 30 oct 2012 £120 + VATsubmersible Pumps 13 nov 2012 £120 + VATimproving rotating machinery reliability (3 days) 20-22 nov 2012 £795 + VATValves for Beginners 5 Dec 2012 £350 + VAT

Pump centre Members receive 30% discount off training courses and 20% discount off awareness days.

unless stated all courses will be held at: the rhinewood country House Hotel Glazebrook lane, Glazebrook nr warrington, cheshire wA3 5BB

the majority of our training courses can be run “in-House” at a venue selected by the client. in-house courses become cost effective when clients have 8 or more members of staff to be trained. Please contact the Pump centre for a quote.

To discuss your training requirements contact:

Jim eaves (call +44 (0)7968 707 753 or email

[email protected])

To reserve your places contact:

Karen Johnson (call +44 (0)1925 84 3512 or email

[email protected])

ForThcoMing TrAining courSeScourSe: 23-24 oct 2012

contract law for engineersTwo day training course.

this is a vital course for project managers because an understanding of the terms and conditions you are working to is key to delivery of a successful project. this is a two day course which examines the law of contract and of tort within which engineering contracts (both supply and construction) are made and operate. the course will cover the broad range of:

• The English legal system

• The law of contract: contract formation, terms (express, implied, exclusion & limitation), requirements as to writing, discharge, breach, and privity

• The tort of negligence

• Risk and payment, variations and their impact

• Essential elements of engineering contracts

• Payment mechanisms

• Standard forms of contract

• Dispute resolution

Points of law will be illustrated with references to legislation and past cases. Detailed course notes will be provided.

courSe: 20-22 nov 2012

improving rotating Machinery reliabilityA practical 3 day course about maintenance of machinery and improving reliability.

the main focus of this three day course is reducing the cost of maintenance and improving mean time between failure. maintaining plant and machinery effectively is crucial to business success and the course introduces delegates to the fundamentals of effective maintenance.

the course will introduce the topics of Planned Preventative maintenance (PPm), condition Based maintenance (cBm), performance measures, maintenance audits, computerised maintenance activities, and an overview of other maintenance philosophies.

the course will cover different types of machinery but focuses predominantly on centrifugal pumps. typically 70% of pump outages are due to “seal failure” and the course looks at the conditions that a reliable mechanical seal needs to operate. Various factors, such as maintenance, operation and systems in the industrial environment, will then be discussed. the topics of bearing and lubrication will also be covered.

the importance of condition monitoring techniques as part of the maintenance strategy will be highlighted. Delegates will be given an appreciation of the most appropriate monitoring parameters and will learn of the various specialist instruments & methods.