Water Power and Dam Construction. Issue July 2010
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WWW.WATERPOWERMAGAZINE.COM JULY 2010 41
SEDIMENTATION
A
N environmentally-friendly dewatering system is being
launched after a successful pilot project which helped to
keep Britain’s canal network open to trafc. The Sedi-
lter system has been created as a complete solution to
dewatering engineering projects. Designed by environmental waste
management rm Aardvark EM, the system is manufactured by
DRM Industrial Fabrics, which specialises in performance ltra-
tion through design. Its creators believe the system will be of great
benet to dam and hydropower plant operations involved in silt
extraction projects and the creation, stabilisation and restoration
of watercourses.
Sedi-lters have been designed to dewater large volumes of water-
based slurries generated from maintenance operations on lakes and
waterways and from industrial processes. They can also be used to
create articial weirs, berms and reefs in watercourses, and for ero-
sion control in the marine environment.
Mark Clayton, managing director of Aardvark, has been heavily
involved in the development of Sedi-lter. “Sedi-lter is of great help
in terms of extracting silt as well as playing a key role in stabilising
watercourses by using lled dewatering bags in the water to help sta-
bilise banks,” he says. “There is really no limit when it comes to the
depth of water Sedi-lter can work in. We are looking at a project in
the Thames Estuary, near Canary Wharf, where they would operate
at a depth of 8m with no problems.”
Sedi-filters have already provided Midlands-based Blue Boar
Contracts – which has a national contract with British Waterways to
dredge canals to a navigable depth – with an environmentally-friendly
solution to the problem of containing and dewatering sediment in
conned areas and holding and treating contaminated sediment.
In a pilot project, the company used Sedi-lter’s bespoke dewater-
ing bags to contain and dewater sediment taken from a 3km stretch
of the Birmingham and Worcester Canal in the heart of Birmingham
city. After successful results during the three-month pilot project, the
company is now using Sedi-lter’s dewatering system to deal with
most of its contaminated sediment.
The dewatering system has a strong environmental benet and can
be effective in a wide variety of dewatering and engineering applica-
tions, says the developers. The main gain is the removal of water from
sediment, transforming it into a drier state, which helps handling and
enables the sediment to be disposed of to landll or used elsewhere.
Blue Boar director Simon Potter is impressed with the way the system
has helped his company’s work: “The use of the Sedi-lter system
means that we don’t have to add anything to the contaminated sedi-
ment to treat it before it is disposed of. That means we don’t have to
have a special licence to deal with the waste and we are not increasing
the weight of the sludge. We can dry it out using the Sedi-lter system,
so it can be accepted to landll and, because the water is extracted,
we are actually reducing the amount we are taking away. This means
lower transport costs and less weight at the landll weighbridge.”
DEWATERING SOLUTION
Sedi-lter dewatering systems have been created to tackle the environ-
mental problems associated with excavating and storing wet slurry,
sludges and sediments. Made from high-quality geotextiles, Sedi-lter
is designed to effectively capture solid materials without the use of
excessive or specialist machinery. It removes excess water from wet
wastes, such as sludges, dredged silts and washwaters, through a pas-
sive ltration process. Solids are held within the tube, as the water
passes through the fabric and ows back to its original source, sur-
rounding ground or another collection point. The result is a signi-
cant reduction in the volume of solid waste that has to be handled
and dealt with – as up to 90% of the water is removed.
If the solid waste is contaminated, like the canal sediment, then the
wet material can be placed in the Sedi-lter and the water extracted. The
Sedi-lter can be used to contain contaminated sediment whilst treat-
ment is applied, as dewatering itself does not decontaminate sediment.
The bag is made of a close weave textile, which aids the dewater-
ing process. The lters are engineered to withstand pressure at the
base, which allows for stacking. They can be made to almost any size
depending on application. The standard size is 7m wide x 33m long
– with a volume of approximately 250m
3
.
Filling is via pumping, the dorsal openings at the top centre of the
bag combine an entry port and sleeve, this allows a pipe to be inserted
and clamped inside the sleeve. Filling is controlled through a mani-
fold/valve system, each tube is lled and allowed to dewater. Once
dewatered, the Sedi-lter is lled again and the process is repeated,
until the dewatered sediment volume is approximately 80%.
A wide variety of treatments can be applied to the slurry during and
after pumping. Air lines can be run through and clamped in place and
microbes added, as well as mixing and agitation.
www.sedi-lter.co.uk
IWP& DC
A new dewatering system offers the dams
and hydropower industry a solution to
sedimentation problems
All systems go for Sedi-filter
42 JULY 2010 INTERNATIONAL WATER POWER & DAM CONSTRUCTION
COMMENT
O
VER the past 58 years, the author has been fortunate
to work on both large and small hydro developments,
and managed to keep detailed statistics on project engi-
neering services. The author found that there was a
vast difference in the project documentation required by a private
utility, as compared with that demanded by a public utility. Also,
there was a signicant difference in how the design and construc-
tion work was undertaken for small as compared with large hydro
developments. After many years, a distinct pattern in man-hours
was discerned, as will be discussed in this paper.
PROJECT ENGINEERING MAN-HOURS
After completion of a feasibility report, one of the rst questions asked
by the hydro project owner; is how much will the detailed engineering
work cost? This is very difcult for the consultant to estimate with any
degree of accuracy. It was found to depend on several factors:
r How much documentation will be required by the owner?
r How will equipment bids be analyzed and what justication will be
required on contractor selection?
r How will orders for the equipment be placed?
r Will the owner question all invoices for the engineering services?
The answers to these questions will directly affect the man-hours
required to undertake the design and project management, resulting
in two types of engineering services offered to owners – (1) a docu-
mented design service, and (2) a non-documented design service.
A documented design would entail the production of:
r A ‘Design Criteria report’: A document showing the criteria to be
used in design of each structure, forwarded to the client for perusal
by the client’s Review Board, prior to starting detailed designs.
r A ‘Design Transmittal’: A document showing how each structure was
designed, for permanent retention in the client’s project les, to be
used whenever there are repairs or modications to the structure.
r A ‘Contract Award document’: A report on how the contractor was
selected, to include all specications and correspondence with the
selected contractor prior to award.
r A ‘Project Completion Report’: This document would include
copies (on CD) of all project drawings and photographs, and copies
of all progress reports issued during construction.
r A ‘Project Operating Manual’.
Such detailed engineering services would normally be required for
all major hydro developments, by large utilities and for international
bank-nanced projects.
A non-documented design is one where a client or contractor is
willing to entrust the engineering services to a consultant, without
requiring any documentation on the design or construction, and
the only documentation provided would be: a copy of all project
drawings; and an operating manual. This standard of work would
be equivalent to the design work undertaken by a consultant for the
general contractor on a design-build project, or that required for a
small hydro development of less than about 50MW capacity.
From 1952 until 1990, the author worked for Montreal
Engineering (Monenco), a consultant who provided design, construc-
tion and operating services to many associated hydro utilities. These
utilities did not require any detailed project documentation; hence the
author was able to accumulate data for non-documented engineer-
ing services, where most of the contracts for construction, turbine
and generator were negotiated with reliable known contractors and
manufacturers. Bids for other equipment were solicited from, at most,
three manufacturers. Specications were concise. For example, all the
technical specications for civil works and mechanical equipment at
the 356MW Brazeau project were contained in a 2.5cm three-ring
binder. About 1960, Monenco began providing services to ‘outside
clients’ who required more formalized engineering with full documen-
tation of the work, and required all contracts to be open for bidding
by pre-qualied contractors. As a result, specications became more
detailed and contractual conditions more complex. This provided an
opportunity to obtain data on documented designs. The results are
shown in Table 1, where the data was accumulated over 32 years
between 1954 and 1986 for 8 non-documented projects and for nine
documented projects.
One of the rst questions owners ask is ‘what will be the cost of engineering services’.
This paper discusses the effect of documented/non-documented designs on project
engineering costs, based on detailed man-hour data obtained from 17 hydro projects
ranging in size from the 6.4MW Maggoty development in Jamaica, to the 2304MW
La Grande 3 development in Quebec. By J L Gordon, P.Eng
Hydro project engineering costs
Project man-hour statistics
Project Head
(m)
Capacity
(MW)
MW/h
0.3
Man-hours
Non-documented projects
1. Maggoty (Jamaica) 88 6.1 1.6 10,850
2. Snare Falls (Canada) 19 6.7 2.8 28,900
3. Umtru (India) 58 11.7 3.5 16,300
4. Rattling Brook (Canada) 94 12.5 3.2 20,220
5. Taltson (Canada) 30 18.3 6.6 22,176
6. Bearspaw (Canada) 15 15.2 6.7 17,460
7. Bighorn (Canada) 75 110 30.1 86,400
8. Brazeau plant (Canada) 118 336 91.2 97,410
Brazeau pump (Canada) 7.6 20
Documented projects
9. Charlot River (Canada) 29 11 4.0 45,100
10. Dadin Kowa (Nigeria) 28 34 12.5 66,000
11. Maskekeya Oya (Sri Lanka) 578 100 14.8 97,674
12. Andekaleka (Madagascar) 214 112 22.4 135,000
13. Cat Arm (Canada) 381 136 22.9 167,00
14. Wreck Cove (Canada) 350 200 34.5 131,200
15. Bayano (Panama) 50 300 92.8 261,000
16. Jebba (Nigeria) 28 560 206.1 352,00
17. La Grande (Canada) 79 2304 621.1 630,000
WWW.WATERPOWERMAGAZINE.COM JULY 2010 43
COMMENT
Analyzing the data, the author found that there is a factor of about 2.5
between a ‘documented’ as compared with a ‘non-documented’ design
and managed project, as shown in Figure 1. There are two distinct lines
on the gure. The lower line (B) represents the man-hours for a ‘non-
documented’ design, and the upper line (A) represents a documented
design. Both lines can be expressed by the following equation
Man-hours = k (MW/h
0.3
)
0.54
(1)
Where: h = rated net turbine head in meters; MW = installed capacity
in megawatts; k = a factor with a value = 8,300 for a non-documented
design, and = 21,000 for a documented design.
In other words, a documented project requires over 2.5 times the
effort expended on a non-documented project. This is very important,
and a factor which must be taken into account by any owner contem-
plating awarding a contract for engineering services.
There are some projects on the chart which do not t the data.
These can be explained by:
r 2 – Snare Falls. The dam site on this project was changed at the last
minute, when the owner decided that the project capacity should
be increased by about 50%. This was accomplished by moving the
dam site downstream to the next set of rapids, after all contracts
had been issued for tender. This required a complete re-design of
the project layout.
r 4 – Rattling Brook. This project proceeded with only a pre-fea-
sibility study, requiring extensive additional studies on dam and
spillway locations.
r 10 – Dadin Kowa. This project was terminated when the client ran
out of money, and still requires completion of the powerhouse and
installation of spillway gates.
r 13 – Cat Arm. During the design engineering work, the owner
decided to add about six utility engineers to the consultant’s electri-
cal design team to learn how to design the automatic controls, with
the intent to retrot the design onto older powerplants. Also, there
were signicant changes to the project concept when detailed design
work commenced, which included use of a U-shaped weir spillway
instead of a gated spillway, impulse units instead of Francis units,
and elimination of the surge tank.
r 7 – Bighorn. This project was undertaken after a change in the man-
agement at the utility. The new management required all contracts
to be tendered instead of being negotiated, adding substantially to
the weight of both the technical and contractual conditions in speci-
cations, and requiring more formal documentation of the work.
It is remarkable how consistent the data appears to be. All of
the projects were undertaken by Monenco, with the exception
of Wreck Cove, engineered by SNC, with Monenco acting as the
owner’s consultant, and LG3, engineered by SNC in association
with Cartier Engineering, a subsidiary of Monenco. Also, two
of the projects, at Maskeliya Oya and Bayano, were designed
from project ofces in Colombo and Panama, staffed with a few
Canadian engineers, with all the other engineers and draftsmen
being provided by the utility client.
The chart is based on data from projects undertaken before the intro-
duction of computerized drafting, (CAD) which one would expect to
reduce drafting time. The author has tried to determine whether CAD
has had a signicant effect on man-hours, to no avail, since consult-
ants are naturally reluctant to divulge such data. However, the author
is of the opinion that CAD and other similar programs have instead
increased drafting time, since now it is very easy to produce more draw-
ings, and to produce three-dimensional images of powerplant interiors
and even individual concrete pours, both of the latter requiring signi-
cant additional input data. The added engineering simplies construc-
tion work, but increases engineering man-hours.
Also, the work was undertaken before personal computers became
available. Again, one would expect that computers would reduce
the engineering effort. However, based on observing the extent and
detail of recent specications for large developments, the author is
of the opinion that computers have indeed facilitated, but have also
increased engineering man-hours.
HYDRO SPECIFICATIONS FOR DOCUMENTED AND
NON-DOCUMENTED PROJECTS
This raises the issue of the effort required to produce specications and
contract documents. A perfect illustration of the difference is shown in
Figure 2, where the large 3-ring binder contains the technical specica-
tions only for the civil works on a medium-sized documented 200MW
hydro project, and the small document on the left contains the civil
specications, the geological report, contractual conditions and the
environmental guidelines for the civil works contract at a small low-
head non-documented 600kW hydro development. The right-hand
document was produced by a large consultant in Vancouver, and the
other document by a small consultant in Halifax.
The author is of the opinion that it is very difcult for a large hydro
consultant to produce a short specication. Large consultants have
the ability to retain specialists in many disciplines, and consequently
have few ‘generalists’ able to work on a variety of structures and
equipment. For example, the mechanical department in a large con-
sultant’s ofce could have an engineer specializing in powerhouse
cranes, another in gantry and gate hoists, another in powerhouse
pumps, compressors and piping, and another in turbines. All would
be required to contribute towards an equipment specication, and
the result would be a document requiring considerable co-ordination
between the specialists. On the other hand, a small consultant would
have perhaps only one mechanical engineer, and this person would
be required to produce the specications for all the mechanical equip-
ment. The resulting document would be more concise than that pro-
duced by the large consultant.
DOCUMENTED PROJECT DESIGN AND MANAGEMENT
To illustrate the difference in project management between a docu-
mented and non-documented work, the data for the large document-
ed Jebba hydro project is presented. Jebba is located on the Niger
River in Nigeria, and includes a large shiplock. It was commissioned
in 1984. It has an installed capacity of 560MW at 27.6m head from
6 vertical axis Kaplan turbines. The completed project can be clearly
viewed on Google Earth at 9-08-20N, 4-47-27E.
Major project quantities at Jebba included:
r Earth excavation: 1,230,000m
3
.
r Rock excavation: 3,270,000m
3
.
r Earth ll: 2,120,000m
3
.
r Rock ll and rip-rap: 2,930,000m
3
.
r Spillway, lock, weir concrete: 241,000m
3
.
r Powerhouse concrete: 245,000m
3
.
Total cost of the project was over $1B in 1980 US$. Time
spent on engineering and project management was 386,000
1,000.000
100,000
10,000
Manhours
110100 1,000
MW/h 0.3
>
Non-documented projects
Documented projects
2
4
10
7
13
A
B
Figure 1: Design engineering man-hours
44 JULY 2010 INTERNATIONAL WATER POWER & DAM CONSTRUCTION
COMMENT
man-hours, of which 27% (104,000mh) was on project
management and construction supervision. The project was fully
documented, which required the production of both “design
criteria” documents and “design transmittal reports” for each of the
nine major structures. Based on detailed statistics maintained through-
out project execution, the project management group supervised the
production and distribution of:
r 23 contract documents, with a total of 2478 pages of technical
specications, plus contractual conditions.
r 364 tender drawings.
r 1406 construction drawings.
r 7335 manufacturer’s drawings received for review by the design
engineers.
r 131 construction reports, with a total of 12,569 pages.
The production of drawings had to be kept ahead of the contractors’
requirements, and peaked at 512 approved for construction draw-
ings issued in the month of February 1980. Of course, it was not
possible to engineer such a large number of drawings in one month;
they were produced over the previous year when design staff peaked
at 72 individuals. The general civil work contract was signed at the
end of January 1978, and in March seven copies of 198 drawings
were packed in a large box and sent by air freight to the contrac-
tors head ofce, knowing that it was essential to keep ahead of the
contractors requirements for detailed construction drawings.
Cost control was maintained by an accounting team at site, and
was complicated by having to use four currencies – US dollars, Italian
Lira, Japanese Yen and German Marks. During construction, it was
difcult to determine the current total cost due to the constant change
in the relative value of the currencies. The project was completed
in 1984, after six years of construction. Management staff averaged
nine persons over this period, and peaked at 13.
NON-DOCUMENTED PROJECT DESIGN AND MANAGEMENT
A non-documented design will not require such a large project man-
agement team as at Jebba. Another factor to be taken into account
is the recent use of water-to-wire equipment contracts, wherein the
contractor undertakes a major proportion of the powerhouse elec-
trical and mechanical design work. This means that the consultant
can often dispense with the services of electrical and mechanical
engineers, further reducing the cost of project execution. Another
factor is the introduction of high speed internet services over the last
decade. This has allowed many engineers and technicians to work
from home, working within informal groups to provide design serv-
ices for small hydro projects. There are several such groups, where a
hydrologist, civil engineer, geotechnical engineer and a CAD drafts-
man produce all drawings, and all working from home.
An early demonstration of this concept was provided at Ragged
Chute, where the addition of a small 6.3MW, 13m head development
at an existing dam in Canada was undertaken in 1992. The work was
supervised by the owner (a retired contractor) from a rented nearby
cottage, a civil engineer and draftsman with no hydro experience
were engaged to undertake powerhouse and intake design, another
to design the penstock, a senior hydro consultant provided advice,
and costs were audited by a hydro engineer appointed by the bank
providing the nancing. A geotechnical engineer was engaged to pro-
vide advice on slope stability during excavation work. Ragged Chute
is located at 47-16-35N, 79-40-19W, and is clearly visible on Google
Earth. Total staff involved were; three engineers (owner + civil +
draftsman) for about 18 months, plus another four engineers very
much part-time. There was a water-to-wire contract for the equip-
ment, and a general contractor undertook the construction and also
designed the plant plumbing, heating, lighting and ventilation sys-
tems. There was no documentation other than an operating manual
provided by the water-to-wire contractor, and a set of drawings.
CONCLUSIONS
The rst decision facing a hydro owner is how much documentation
of the project execution work will be necessary? For large projects,
documentation is required. There is a grey zone between about
25MW and 100MW where documentation is optional. However, for
small hydro work, of less than about 50MW, documentation should
be kept to a bare minimum.
Recently, the author has seen specications issued by hydro utilities
for engineering services. They include extensive requirements for very
detailed project documentation, even for small hydro projects, and
the author is of the opinion that such specications have been issued
without understanding the effect on engineering costs. It is hoped that
this paper will help to clarify such issues.
Jim Gordon is an independent hydropower consultant,
and can be reached at – jim-gordon@sympatico.ca
IWP& DC
Small – large hydro specifications compared
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Yolsu Engineering Services Ltd. Co.
Hürriyet Caddesi No:135 Dikmen, 06450 Ankara,TURKEY
Tel: +90 312 480 06 01 (pbx) Fax: +90 312 483 31 35
www.yolsu.com.tr info@yolsu.com.tr
Prefeasibilty, Feasibility,
Final & Detail Design,
Consulting Services:
• Basin development
• Dams and hydropower plants
• Irrigation and drainage
• Water supply and sewerage
• River engineering
• Highways and railways
Successful projects in
Hydropower and Water
Management
F
or further information please contact
h
p.energy@poyry.com and visit www.poyry.com
Stellba Hydro AG Stellba Hydro GmbH & Co KG
Langgas 2 Badenbergstrasse 30
CH-5244 Birrhard D-89520 Heidenheim
Switzerland Germany
Telefon +41 (0)56 201 45 20 Telefon +49 (0)7321 96 92 0
Telefax +41 (0)56 201 45 21 Telefax +49 (0)7321 6 20 73
Internet www.stellba-hydro.ch Internet www.stellba.de
E-Mail info@stellba-hydro.ch E-Mail info@stellba.de
721
www.rizzoassoc.com
WATER RESOURCES POWER GENERATION
MINING TUNNELS
TECBARRAGEM
SLIPFORM
Phone/Fax: + 5511 51812527
tecbarragem@tecbarragem.com.br
Website: www.tecbarragem.com.br
• Faster Constructive System for Civil Works
• Specialists in Hydroelectric and Dam Projects
• Qualified Projectists, Engineers and Technicians
• Special Formworks and Slipforms
To advertise in the Professional Directory or
World Marketplace section, or for more
information contact Diane Stanbury.
tel: +44 (0)20 8269 7854
or email:
dianestanbury@globaltrademedia.com
Copy deadline for August 2010 issue
is 3 August 2010
I N T E R N A T I O N A L
& DAM CONSTRUCTION
Water Power
www.waterpowermagazine.com
The classified section in Water Power & Dam
Construction is a well established and popular
section with the magazine’s combined print and
digital circulation of 16,000. Commonly known
as where “the buyer meets the seller”.
Industry Showcases
The industry showcase section is made up
of eighth page adverts (95x65mm) with a
maximum of eight key suppliers to a page. It
is a n ideal section to promote products
and services, raise brand awareness and
shout about company successes. Showcase
adverts ar e also an ideal way to promot e
product literature and generate interest.
Recommended duration:
minimum 3 months
Recruitment
The ideal way to promote a company vacancy
and reach experienced professionals looking
for the next opportunity t o advance their
career in the hydro power & dam construction
industries.
For more information, please contact
Diane Stanbury
Telephone: +44 (0)20 8269 7854
or email:
dianestanbury@globaltrademedia.com
WORLD MARKETPLACE
48 JULY 2010 INTERNATIONAL WATER POWER & DAM CONSTRUCTION
CLASSIFIED
www.waterpowermagazine.com
CYLINDERS
CRANES GATES
• Custom Design Hydraulic Cylinders
•
Servomotors
•
Piston Accumulators'
• Hydraulic Power Units
• Control Panels
www.doucehydro.com
Douce Hydro FRANCE, USA and GERMANY
Tel France: + 33 / 3 22 74 31 08 ; E-mail: afleroy@doucehydro.com
Tel USA: + 1 / 586 566 4725 ; E-mail: fvandenbulke@doucehydro.com
Tel Germany: + 49 / 177 398 37 78 ; E-mail : ublase-henke@doucehydro.com
BEARINGS
PAN
®
bronzes
and
PAN
®
-GF
self-lubricating bearings
Since 1931
- Superior quality with
• Highest wear resistance
• Low maintenance
• Or maintenance free
-
Extended operating life
PAN-Metallgesellschaft
P.O. Box 102436 • D-68024 Mannheim / Germany
Phone: + 49 621 42 303-0 • Fax: + 49 621 42 303-33
k
ontakt@pan-metall.com • www.pan-metall.com
BEARING OIL COOLERS
HEXECO, Inc. ... a Heat Exchanger Engineering Co.
Tel: +1 (920) 361-3440 • Fax: +1 (920) 361-4554
E-Mail: info.wpd@hexeco.com • Web: www.hexeco.com
OIL COOLERS
For
THRUST and
GUIDE
BEARINGS
CONCRETE COOLING
FILTRATION EQUIPMENT
WWW.WATERPOWERMAGAZINE.COM
CIVIL ENGINEERING:
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vÀ `> }>ÌiÃ] ëÜ>Þ }>ÌiÃ]
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«iÀ>Ì Õ« Ì >ÕÌ>ÌV ÀiÃiÀÛÀ
ÌÀ} >` VÌÀ ,®
www.montanhydraulik.com
Providing water control solutions through thoughtful engineering,
innov ative design, attention to detail and outstanding customer
service. Contact us for inflatable water control gates and rubber
d
ams.
PO Box 668, Fort Collins, CO 80522 USA
Tel: 970-568-9844
www.obermeyerhydro.com
HYDRO CASTINGS
• Water turbine components
• Castings from 100 kg to 30 tons
• Latest CAD-CAM capabilities
• Certified Quality Assurance ISO 9001
• Environmental Management System ISO14001
Your contact: Mr. Timo Norvasto, Sales Manager
Lokomo Steel Foundry
Tel: +358 204 84 4222
Fax: +358 204 84 4233
Email: timo.norvasto@metso.com
Web: www.metsofoundries.com
CONCRETE COOLING
• COLD & ICE WATERPLANTS
• FLAKE ICE PLANTS
• ICE DELIVERY & WEIGHING SYSTEMS
• ICE STORAGES
KTI-Plersch Kältetechnik GmbH
Carl-Otto-Weg 14/2
88481 Balzheim
Germany
Tel:/Phone: +49 - 7347 - 95 72 - 0
Fax: +49 - 7347 - 95 72 - 22
Email: ice@kti-plersch.com
Website: www.kti-plersch.com
WORLD MARKETPLACE
WWW.WATERPOWERMAGAZINE.COM JULY 2010 49
CLASSIFIED
www.waterpowermagazine.com
HYDROMECHANICAL
EQUIPMENT
HYDRO POWER
PLANT EQUIPMENT
HYDRO POWER
PLANT EQUIPMENT
ANDRITZ HYDRO GmbH
Penzinger Strasse 76, A-1141 Vienna, Austria
Phone: +43 (1) 89100-0, Fax: +43 (1) 8946046
contact-hydro@andritz.com • www.andritz.com
Your Partner
for renewable and clean energy
We focus on the best solution – from water to wire.
Voith Hydro Holding GmbH & Co. KG
Alexanderstrasse 11
89522 Heidenheim/Germany
www.voithhydro.com
A Voith and Siemens Company
! Water power plant equipment
(electrical and mechanical)
! Pumps
! Governors
! Automation
! Modernization of existing power plants
! Hydro power services
! Ocean energies
INSTRUMENTATION
(DAM MONITORING)
Vikas Kothari: Executive Director Tel: 91 11 29565552 TO 55
Om Metals Infraprojects Ltd. Fax: 91 11 29565551
4th Floor, NBCC Plaza, Mobile: 91 98110 68101
Tower III, Sector 5, Email: vikas@ommetals.com
Pushp Vihar, info@ommetals.com
Saket, New Delhi, 110 017, INDIA Web: www.ommetals.com
Turnkey EPC contracts for:
•Radial Gates •Trash Racks & TRCM
•
Vertical Gates •Gantry Cranes & EOT
•Penstocks •Mechanical/ Hydraulic Hoists
•Stoplogs •Draft Tubes
Turnkey EPC contracts for:
•Radial Gates •Trash Racks & TRCM
•
Vertical Gates •Gantry Cranes & EOT
•
Penstocks •Mechanical/ Hydraulic Hoists
•Stoplogs •Draft Tubes
Om Metals
Reliable and innovative solutions utilizing
over 156 years continuos hydro-electric
experience.
F
ully customised supply of turbines,
generators, controls, switchgear &
a
ssociated plant up to around 20MW,
including a micro hydro range of turbines.
Japan: Gilbert Gilkes & Gordon Ltd
h-yamamo@rf6.so-net.ne.jp
North America:
Vancouver Island Technology Park
2103 - 4464 Markham Street
Victoria BC V8Z 7X8
b.sellars@gilkes.com
t: 250-483-3883
UK: Gilbert Gilkes & Gordon Ltd,
Canal head North, Kendal,
C
umbria LA9 7BZ
[ M
hydro@gilkes.com
! World wide referenced water to wire General Contractor
! Turbines and Generators
! Electromechanical Equipment
! Switchgears
! Control Protection Monitoring and SCADA Systems
! Balance of the Plant
! Turn key projects
! Rehabilitation
S.T.E. S.p.a. - Via Sorio, 120 - 35141, PADOVA(Italy)
tel. +39 049 2963900 - fax. +39 049 2963901
Email: ste@ste-energy.com Web: www.ste-energy.com
ISO 9001 CERTIFIED
Geokon, Incorporated manufactures a full range
of geotechnical instrumentation suitable for
monitoring dams. Geokon instrumentation employs
vibrating wire technology that provides measurable
advantages and proven long-term stability.
The World Leader in
V
ibrating Wire Technology
T
M
Geokon, Incorporated
48 Spencer Street
Lebanon, New Hampshire
03766
•
USA
Dam Monitoring Instrumentation
1
•
603
•
448
•
1562
1
•
603
•
448
•
3216
info@geokon.com
www.geokon.com
Dam Safety Instrumentation • Fiber Optic and
Vibrating Wire Technologies • In-Situ Testing
and Turn-Key Solutions
• Piezometers
• Pressure Cells
• Extensometers
• Crackmeters
• Inclinometers
• Tiltmeters
1-877-ROCTEST
info@roctest.com
• www.roctest.com
33.1.64.06.40.80
info@telemac.fr
• www.telemac.fr
WORLD MARKETPLACE
50 JULY 2010 INTERNATIONAL WATER POWER & DAM CONSTRUCTION
CLASSIFIED
www.waterpowermagazine.com
SMALL HYDROELECTRIC
POWER SETS
SMALL HYDROELECTRIC
POWER SETS
Turbines up to 20 MW
Alternators up to 22 MVA
Governors
Switchboards
79261 Gutach /Germany
Tel . + 49 7 6 85 9 1 06 - 0 · Fa x : - 1 0
www.wkv-ag.com
Water-to-Wire Solutions Made in Germany
Turbine & Alternator Manufacture
W
TRASHRACK RAKES
MICRO/SMALL
HYDROELECTRIC POWER SETS
Turbines up to 20 MW
Alternators up to 22 MVA
Governors
Switchboards
79261 Gutach /Germany
Tel . + 49 7 6 85 9 1 06 - 0 · Fa x : - 1 0
www.wkv-ag.com
Water-to-Wire Solutions Made in Germany
Turbine & Alternator Manufacture
W
INSTRUMENTATION
(GEOTECHNICAL)
Partial Discharge?
www.pdix.com
PARTIAL DISCHARGE DETECTION
+
43 - 7234 - 83 902