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

The runners will be manufactured at
our workshop in Switzerland within
12 months.
The runners will boost the lifetime of
the plant’s six existing double Pelton
units and increase electricity
output in the Stavanger area. This
contract confirms the strong position
of VA TECH HYDRO in Norway,
a country which is second only to
Switzerland in commissioning MG
Pelton runners.
Technical data:
Output: 37.8 / 44.6 MW
Head: 610 m
Speed: 500 rpm
Runner diameter: 2,433 mm
Reidar Hjelleset
Phone +47/61 31 52 16
reidar.hjelleset@vatech.no
NORWAY
FAGERLI, REKVATN, EIDET I,
SJONA, SIMA, TAFJORD
VA TECH HYDRO is currently handling
several turbine refurbishment
and upgrading contracts.
The refurbishment of Fagerli power station,
Rekvatn power station and Eidet I
power station has been completed and
work is going on for Sjona power station.
For Sima power station, one of the
largest power stations in Norway,
VA TECH HYDRO has delivered two
new governors and will deliver the
other two units during 2003. At Tafjord
power station two spherical valve
control systems have been installed
and we have as many as
fourteen new spherical valve control
systems in our order book for delivery
over the next two years. Additionally, we
are working on the remodeling and
repair of old Pelton runners for several
customers at our workshop in Jevnaker.
Erik Pike
Phone +47/61 31 52 08
erik.pike@vatech.no
TINNOSET
NORWAY
Øst Telemarkens Brugseierforening
has awarded VA TECH HYDRO a contract
for delivering four sector gates.
Three sector gates will be 16.35 m
wide and 5.65 m high. A smaller one
of the same width will only be 4.20 m
high. Two of the gates have now been
successfully delivered and soon we
will start production of the remaining
two gates that will be delivered in
2003 during springtime.
Technical data:
Output: 21.3 MW
Head: 473.85 m
Speed: 500 rpm
Runner diameter: 1,740 mm
Erik Pike
Phone +47/61 31 52 08
erik.pike@vatech.no
NORWAY
TYIN
VA TECH HYDRO has been awarded
a supply contract for the
penstock for Tyin power station
owned by Norsk Hydro. We are a
subsupplier to the main contractor,
Selmer Skanska.
The penstock is embedded in concrete
and consists of a main part
with a diameter of 2,900 mm and a
bifurcation piece to two penstocks
with a diameter of 2,200 mm leading
to the power units. The design pressure
is 1,147 m water column and the
entire scope of supply consists of
approx 600 tons of steel. The construction
phase has been finished
and we will soon start production.
The erection has been scheduled for
September 2003.
Erik Pike
Phone +47/61 31 52 08
erik.pike@vatech.no
HIGHLIGHTS
SWITZERLAND
CHATELÔT
10% Output increase on 50year
old power units
VA TECH HYDRO in Switzerland
has signed a contract with Société
des Forces Motrices du
Châtelot (SFMC) for the upgrading
and modernization of two 50year
old Francis turbines at
Chatelôt power station. This
power station is located on the
Doubs river, at the border between
France and Switzerland.
The scope of work comprises the
replacement of the turbine runners,
wicket gates, stationary
wear rings and labyrinth rings,
turbine main shaft, and adjacent
components. The coupling system
will be changed from a classic
coupling with adjusted bolts
to a so-called SKF-system with a
lean coupling cone and sleeve. It
was a challenge for our hydraulic
engineers to come up with new
runner blade and wicket gate
profiles, which guarantee the increased
output while reducing
cavitation effects to a maximum.
To avoid local cavitation due to
slight deviations of the runner
blade profiles, about 90% of
these will be machined on a fiveaxis
milling machine.
Technical data:
Output: 9.5 MW
Head: 94.45 m
Speed: 500 rpm
Runner diameter: 1,200 mm
Pedro López
Phone +41/21 925 77 13
pedro.lopez@vatech-hydro.ch
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