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GIW MDX Technology Cuts Pump TCO by Millions

In operation at a major copper mine in Chile, MDX technology dramatically increased pump wear life, saving millions of dollars in maintenance, energy, downtime and other costs.

GIW Industries, the leader in the design, manufacture and application of heavy duty, centrifugal slurry pumps, announced that its installation of MDX pump technology at a major Chilean copper mine has resulted in a dramatic reduction of total cost of ownership (TCO) for those pump applications - amounting to millions of dollars in savings for the customer..

TCO for slurry pumps includes not only the initial cost of the pump, but also factors such as wear life, annual cost of parts, labor, energy and downtime for maintenance.

KSB Pumps and Valves (Pty) Ltdwww.ksbpumps.co.za

Pumps Valves Systems

LSA MDX LCC HVF

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Chris ReayChairman of the Working

Committee: Communications(SA Institution of Mechanical

Engineering)

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ils

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The monthly circulation is 4 326

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SAIMechE Training Workshops : 20 April 2013 - 30 June 2013

Programmes and Registration Form obtainable from Carey Evans, Tel. 031 764 7136 or carey@saimeche.org.za

Event Code

Workshop Title Start End Region

A6313 The Road to Professional Registration

24-Apr 24-Apr Durban

E3113 Heat Transfer in Practice

24-Apr 25-Apr East Rand

A0713 Pressure Equipment

Regulations

8-May 8-May Durban

F3213 Duplex Stainless Steels

8-May 8-May Secunda

E2513 Materials Selection

- Processes, Parameters & Performances

9-May 9-May East Rand

A6413 Tank Design, Construction &

Installation

15-May 16-May Durban

B6013 Inventive Solutions to Engineering

Problems

15-May 16-May Port Elizabeth

C3013 Root Cause Failure Analysis

15-May 16-May Cape Town

E6313 The Road to Professional Registration

22-May 22-May East Rand

A0613 The Engineer As Manager

23-May 24-May Durban

C6313 The Road to Professional Registration

29-May 29-May Cape Town

E3013 Root Cause Failure Analysis

29-May 30-May East Rand

A5713 Total Productive Maintenance

30-May 30-May Durban

C2613 Corrosion Control 5-Jun 5-Jun Cape Town

E6413 Tank Design, Construction &

Installation

5-Jun 6-Jun East Rand

A5813 Continuous Flow Processes: Methodology for

Engineers

6-Jun 6-Jan Durban

A3013 Root Cause Failure Analysis

12-Jun 13-Jun Durban

D6013 Inventive Solutions to Engineering

Problems

12-Jun 13-Jun Vanderbijlpark

F0913 ISO 9001 - 2008 19-Jun 19-Jun Secunda

F6613 Effetive Negotiation

Methodologies for Engineers

20-Jun 20-Jun Secunda

C0613 The Engineer As Manager

20-Jun 21-Jun Cape Town

A2613 Corrosion Control 26-Jun 26-Jun Durban

B3013 Root Cause Failure Analysis

26-Jun 27-Jun Port Elizabeth

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COVER STORY

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COVER STORY

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PIPES, PUMPS & VALVES

John Thomson, managing director of Exhibition Management Services (EMS)

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PIPES, PUMPS & VALVES

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were engineered to sharePPS allocates a record R3 billion to its members. Now thats a unique benefit of mutuality. For more benefits and info, SMS MECH and your NAME to 42097, visit www.pps.co.za or consult a PPS product-accredited financial adviser.

PPS is an authorised Financial Services Provider. *PPS members with qualifying products share in the profits of PPSTerms, conditions and standard SMS rates apply

Academic

Career Path

Achievements

Most Challenging Project

Most Rewarding Project

Commentary

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Jannie Bekker CEO of L&B Industrial Power

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After: A completed rewinding

A pump assembly, ready for delivery

Before: a motor for rewinding

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What is mechatronics?

Whats your real job?

What do you drive now and what would you drive if money was no object?

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Nico Serfontein, Think Blue project leader

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THE SOUTH AFRICAN MECHANICAL ENGINEER VOL 63 April 2013 21Untitled-2 1 12/4/2012 6:16:55 PM

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TICK

ER T

APE

PROMECH PUBLISHINGTel: (011) 781-1401Fax: (011) 781-1403Email: samecheng@promech.co.zaWebsite: www.promech.co.zaManaging Editor: Susan CustersEditorial: Kowie HammanAdvertising: Mark BennettCirculation: Catherine MacdivaDTP: Zinobia Docrat/ Donovan VadivaluDisclaimerPROMECH Publishing does not take responsibility for the opinions expressed by individuals.

CopyrightAll rights reserved. No editorial matter published in Power Generation Today may be reproduced in any form or language without written per-mission of the publishers. While every effort is made to ensure accurate reproduction, the editor, authors, publishers and their employees or agents shall not be responsible or in any way liable for any errors, omissions or inaccuracies in the publication, whether arising from negligence or otherwise or for any consequences aris-ing therefrom. The inclusion or exclusion of any product does not mean that the publisher or editorial board advocates or rejects its use either gener-ally or in any particular field or fields.

POWERGENERATION

TODAY

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The TKE systems burner

The control system for the TKE burner

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Recipients of Certified Energy Manager (CEM) and Energy Manager In-Training (EMIT) cer-tificates for the 2011/12 year in South Africa.

Recipients of the Certified Measurement and Verification Professional (CMVP) certificates for the 2011/12 year in South Africa

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MANY ITEMS CAN BE OFFERED FROM STOCK

MULTI_ALLOYS_MECHANICAL_ENG_130x1 1 12/20/12 9:45:24 PM

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They have been in service for decades under the toughest conditions and have proven themselves worldwide. Voith fluid couplings protect belt con-veyors and drive components by provid-ing smooth acceleration and torque control allowing for frequent loaded starts with the least amount of stress on the drive and belt.

In multi-motor drives they ensure pre-cise load distribution. Result: fewer downtimes and the service life of the belt and the drive components is in-creased. The latest product innovation is the Voith TurboBelt 780 TPXL.

info.vtza@voith.comwww.rsa.voithturbo.com

Protect Your Belt Conveyors with Voith Fluid Couplings

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Keith Cain (left) and Simon Welding from Saint

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Figure 1: Variation of dynamic magnifica-tion factor with damping and frequency (Clough, 2003)

Figure 2: Proposed client model of screening unit

Screen Mass D CB

A

RESTRAINT

Pump Mass

RESTRAINT

RESTRAINT

RESTRAINTPinned Links

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Member Member Type Section1 H-Section 152X152x30

2 Angle 70X70x6

3 I-Beam 254X146x37

4 Taper-Channel 140X60x16

5 I-Beam IPE 200

Figure 6: FEA model: Von Misses stresses (Max stress = 75 MPa < 355 MPa OK)

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Table 2: Compression & Buckling Checks to SANS 2009

Figure 8: Relationship of mass participation and frequency with under-pan empty

Figure 10: Mode shape at pump motor (Not significant)

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Figure 11: Critical frequency x in resonance region (Structure at Full Capacity)

Figure 12: Critical mode shape shown with direction of arrows (structure at full capacity)

Figure 13: Critical frequency x out of resonance region (Structure at full capacity)

Figure 14: Critical frequency x out of the resonance region (Structure at full capacity)

Member Member Type Section1 H-Section 152X152x30

2 Angle 70X70x6

3 I-Beam 254X146x37

4 Taper-Channel 140X60x16

5 I-Beam IPE 200

6 Box Section 140x60x16

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Figure 16: Stress range of the final structure at steady state response

Figure 17: Effect of partial fixity of bracing members on the natural frequency

Hours/Day Days/Year Years Cycles (x10^9)Duration of Applied Load 24 360 20 9.953Stress Range (MPa) 1.2Connection Type (Pinned Bolted)

E

LogCo d Log m So

12.5169 2 0.2509 3 47

Standard Allowable Cycles (x10^9)

599.179 Ratio: 0.0%

Corrected Allowable Cycles (x10^9)

921686.146 OK

Table 4: Fatigue Analysis (BS 7608: 1993)

Figure 18: Effect of partial fixity of bracing members twisting of top beams at a displacement of 10%

Figure 15: Final Design Structure

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engineering for a better world

Superior COP values at full and part load operationHigh reliability and high quality wear resistant partsModest investment and low maintenance costEasy to install and to packageWide capacity range

GEA Grasso V-Series Reciprocating Compressor

GEA Refrigeration Africa (Pty) Ltd19 Chain Avenue, Montague Gardens, 7441PO Box 36815, Chempet, 7442, South AfricaTel. + 27 21 551 4034, Fax + 27 21 551 4035industrial@gea.com, www.grasso.co.za

GEA Refrigeration Technologies

New half page V ad 2013 Grasso.indd 1 2013/03/18 04:10:48 PM

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MARKET FORUM

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Bosch Rexroths new external gear pump, Silence Plus

MARKET FORUM

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Three WEG regenerative drives

The new blue WEG electric motor

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Contact your local representative to determine savings in your geographical region.Munters (Pty) Ltd Tel: +27 11 997 2000 E-mail: info@munters.co.za Web: www.munters.co.za 0860 MUNTERS

Introducing the DryCool StandardHCU and DryCool ERV Systemswith digital scroll technology. When

cooling a space, you deliver air colder than thedesired space temperature. Likewise to dehumidifya space, you deliver air dryer than the requiredspace dewpoint. A single Munters Dedicated

Outdoor Air System (DOAS) can provide therecommended ASHRAE 62.1 outdoor air atdewpoints so dry it will handle the entire latentload, while at the same time using less energy thana standard cool/reheat unit. Now with the additionof digital scroll technology, we have made the bestsystem even better.

Our Most Effi cient Low Dewpoint Dedicated Outdoor Air SystemsJust Got More Effi cient

Contact Munters so we can show you how to let your space sensible device control what it controlsbest, space dry bulb and let Munters equipment control what it controls best, space moisture.

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ExcellentMineralsSolutions

For more information contact us on: +27 (0)11 9292600www.weirminerals.com

Lower your operational costs with the Weir Minerals Solution

In slurry and dewatering pumping, processing and control applications where the cost of ownership often outweighs capital cost as a priority, we help our customers address such issues as longevity, capacity, efficiency of operation and maintenance.

Warman slurry and Envirotech dewatering pumps are among the worlds most comprehensive range of pumps for use in mining, chemical and industrial applications. These pumps are designed for ultra heavy duty applications such as mill discharge, process plant and tailings, high pressure pipelines, as well as other speciality applications.

Robust design and rugged heavy-duty construction, the Isogate slurry knife gate valve is designed for long life and high reliability.

The Isogate valve range now also includes Autoball 3 way check valves, swing check valves, and a diverse range of mechanical and pneumatic pinch valves.

WARMANCentrifugal Slurry Pumps

ENVIROTECHCentrifugal Slurry Pumps

ISOGATESlurry Valves

Expertise where it counts

Copyright 2012, Weir Minerals Africa (Pty) Ltd. All rights reserved.WARMAN is a registered trademark of Weir Minerals Australia Ltd and Weir Group African IP Ltd; ISOGATE is a registered trademark of Weir

do Brasil Ltda; AUTOBALL is a trademark of Weir Minerals Australia Ltd.