May 2003 ISSUE TONGBAI Page 4/5 COMPACT HYDRO in ...

USA
JAYBIRD
SACRAMENTO MUNICIPAL UTILI-
TY DISTRICT (SMUD) signed a contract
with VA TECH HYDRO USA in
October 2002 for the design and
supply of two Pelton – replacement
runners, manufactured in reliable
HIWELD technology in Linz.
The HIWELD technology uses runner
disks and runner buckets made of
high-quality forged stainless steel,
welded together in areas of low and
safe stress levels. Thus areas of the
buckets subjected to high stress are
made of top quality forged materials.
Finally these characteristics were the
decision basis of SMUD for placing the
order with VA TECH HYDRO against
conventional cast runners. The Jaybird
power station, located east of Sacramento
in California, which includes
two vertical Pelton turbines with six
nozzles, will receive delivery of the first
runner within one year and the second
will follow two weeks later.
Mike Byrne
Phone +41/704 943 4343
mbyrne@vatechhydro.com
SPAIN
HIGHLIGHTS
Technical data:
Output: 79.5 MW
Head: 456.6 m
Speed: 300 rpm
Runner diameter: 2,718 mm
O NOVO PINDO
Ferroatlantica has awarded
VA TECH HYDRO in Spain a contract
for the supply of an 11 MW
Francis turbine for its O Novo
Pindo facility.
The contract follows a preliminary
project jointly carried out by
VA TECH HYDRO in Spain and Elecnor,
based on the Ferroatlantica
idea of installing an 11 MW Francis
turbine, using the building of the old
Pindo power plant, discontinued
many years ago. VA TECH HYDRO´s
partner in this project, Elecnor, is
an electrical supplier, with whom
VA TECH HYDRO has had a close
16
relationship for a long time ago
as partner and as supplier in
Spanish projects. The scope of
supply includes an 11 MW Francis
turbine, a synchronous generator,
an ND 1250 butterfly valve, a
digital speed governor, a 70 m
penstock, erection, and commissioning.
Technical data:
Output: 11 MW
Head: 202 m
Speed: 600 rpm
Runner diameter: 1,443 mm
Alfonso Madera
Phone +34/91 425 10 38
alfonso.madera@vatech-hydro.net
MEXICO
AGUA PRIETA
VA TECH HYDRO in Switzerland has
received an order for the supply of
two additional MicroGuss replacement
runners for Comisión Federal
de Electricidad (CFE) in Mexico.
CFE has an installed capacity of
9,400 MW in hydropower and supplies
more than 90 % of the Mexicans
with energy. MicroGuss is a fabrication
method for Pelton runners employing
forged materials in highstress
zones. Resistance to corrosion
fatigue is significantly higher than of
conventional castings and prevents
cracking in bucket roots.
MicroGuss runners feature increased
lifetime, plant output, safety,
and availability as well as reduced
maintenance expenses. The new Pelton
runners, with a weight of more
than 20 t each, will be delivered in Mai
2004 and June 2004, respectively.
Technical data:
Output: 120 MW
Head: 508 m
Speed: 300 rpm
Runner diameter: 3,770 mm
Christoph Bütikofer
Phone +41/41 329 53 72
christoph.buetikofer@vatech–hydro.ch
NORWAY
ØVRE OTTA
In December 2002 Norge Opplandskraft
DA awarded a contract
to VA TECH HYDRO for
the design, manufacture, supply,
installation, and commissioning
of four synchronous generators.
Øvre Otta is a group of power
plants located in the western part
of Norway consisting of two independent
powerhouses operating
underground: Framruste and
Øyberget.
Framruste utilizes a net head of
approximately 325 m between
Raudalsvatnet and Pollvatnet and
Øyberget has a net head of approximately
150 m between
Heggebottvatnet and Dønfossen.
The first unit is scheduled to be
back on line in June 2005.
Technical data Framruste:
Output: 85 MVA
Voltage: 11 kV
Head: 325 m
Speed: 500 rpm
Stator diameter: 5,200 mm
Technical data Oyberget:
Output: 10/29/67 MVA
Voltage: 11/10.5/10.5 kV
Head: 150 m
Speed: 750/500/333.3 rpm
Stator diameter:2,700/4,700/5,700 mm
Franz Cirnfus
Phone +43/1 89100 2666
franz.cirnfus@vatech-hydro.at
NORWAY
LYSEBOTN
VA TECH HYDRO has secured a
contract with Norway-based Lyse
Produksjon AS for the delivery of
12 new MicroGuss (MG) Pelton
runners for the Lysebotn plant,
near Stavanger.