The mounTains TrusTs us wiTh Their waTer.

And we tAke good cAre of it.

3.

Région Ouest

Région Est

Région Centre

Farettes

Taulan

La Sarraz

Les Clées Montcherand

Veytaux

MiévilleSalanfe

FMMB

Fully Nendaz

Chamoson

Bieudron

Chandoline

Bramois

Mottec

LonaMoiry

Turtmann

Rhône

Vissoie

NavizenceBitsch

Moerel

Gebidem

Gabi

GondoTannuwald

ErnenBinn

M‘Bach

Alstafel

ArollaFerpècle

StafelZmutt

Cleuson

Fionnay

Grande Dixence

La Dernier

Sonzier

Hongrin

Diablerets

Pont-de-la-Tine

Peuffeyre

Vouvry

Rivaz

Region West

Region Ost

Region Zentral

Farettes

Taulan

La Sarraz

Les Clées Montcherand

Veytaux

MiévilleSalanfe

FMMB

Fully Nendaz

Chamoson

Bieudron

Chandoline

Bramois

Mottec

LonaMoiry

Turtmann

Rhône

Vissoie

NavizenceBitsch

Moerel

Gebidem

Gabi

GondoTannuwald

ErnenBinn

M‘Bach

Alstafel

ArollaFerpècle

StafelZmutt

Cleuson

Fionnay

Grande Dixence

La Dernier

Sonzier

Hongrin

Diablerets

Pont-de-la-Tine

Peuffeyre

Vouvry

Rivaz

hYDro exploitation sa is a service company involved with electricity developments. Based in sion, our company was founded in 2002 by eos holding sa (presently known as alpiq holding sa), Forces motrices Valaisannes sa and Grande Dixence sa. romande energie holding sa, then Forces motrices de la Gougra sa joined our shareholding in 2007 and 2011 respectively. in 2007 we also took over the activities of the alp-hydro company.

our mission

we commit ourselves to the optimal exploita-tion of electricity works with which we are en-trusted, by maximising availability and security. we create added value for our clients, thanks to sustainable concepts and innovatory solutions. To this effect, more than 500 colleagues, dis-tributed in an area from the rhone glacier to the Vaudois Jura region, are active in construc-tion sites, in engineering as well as at our central workshops.

specific know-how

The sites where we work are extremely varied. They differ in size, power, production volume, and the technology used to retain or turbine water. exploiting such installations requires the specific know-how that hYDro exploitation has possessed for decades.

our clients are mainly owners of electricity pro-duction installations who entrust us with the management and maintenance of their instal-lations. our activities range from the capture of water to the electricity production centres which we exploit. The owners transport and commercialise the energy produced.

we operate a series of works consisting of 40 hydro-electric stations distributed in 12 groups, with the installed potential of about 22% of Swiss hydro-electric power. combined, these installations produce more than 16% of hydro-electric energy in our country.

our proFession:hydro-electricity exploitAtion

traductions du plan

5.

a cenTre oF expertiSe

Maintenance activities are carried out by multidisciplinary teams made up of civil engi-neering, electricity, computer science and me-chanics specialists. They concern themselves with the developments which are entrusted to us like other installations in switzerland or abroad.

Thanks to the development of innovatory services in aptitude, management of danger or condition monitoring (see p.8), we have evolved towards a form of maintenance based on danger.

our versatility is our strength. under the same roof, we bring together all the specific expertise necessary for exploitation (management and maintenance), as well as restoration of hydro-electric installations. The synergy which results from this organisation is of primary benefit to our clients.

Management of installations includes the permanent monitoring and regular maintenance of the installations entrusted to us.

inspections and tests are carried out regularly by our colleagues. a 24-hour stand-by service ensures technical support whenever there are problems at power stations. Furthermore, a repair service (diagnosis and intervention) oper-ates permanently.

management also includes periodic maintenance work carried out with the help of Gmao. we also provide short, medium and long term projections of water supplies. From control centres, our specialists survey and control the filling of dam reservoirs, taking into account the part played by natural supply.

7.

the centrAl workshops

each year our engineers, project chiefs, tech-nicians and other employees elaborate and manage more than 1000 maintenance and renewal projects.

civil engineering

• assessments, concepts, projects and mainte-nance for water inlets, stone traps, grit cham-bers; underground work, galleries and siphons

• auscultation of works, dams, geodesic analyses

electrical

• establishment of terms of reference for the renewal of electrical installations

• cleaning electric machines with CO2

• oil chemical analyses (insulating, lubrication, heating) and water

• treatment of transformer isolating oils • conception, projects, maintenance of instal-

lations and electrical protection of power plants, of transport posts and lines

we have our own workshops, centralised in martigny. in an area of 3000 square metres there is:

• a machine workshop • a wheel restoration workshop • a workshop for the servicing of mechani-

cal components • a chemical analysis laboratory There are also non-destructive inspections (re-usage, video-filming, etc) of the various mechanical elements built or serviced in the workshops as well as in the power stations.

Thanks to this centralised structure, we can react quickly and in a flexible way if there is a problem or a failure in a power plant by in-creasing the availability of installations.

a training centre

in order to ensure the durability of our special-ised know-how, our central workshops also act as a training centre for apprentices in precision mechanics, computing and production me-chanics.

Télématics

• conception and carrying out of automation, tele-management, tele-protection and tele-transmission

• conception and carrying out of computer networks - telecommunications

mechanics

• maintenance of turbines, pumps et sluice gates, servicing of installations

• carrying out and managing engineering projects in the overall field of steel construc-tion (grills, grit chambers, sluice gates, surge tanks, pressure pipelines, pumps)

A vAriety of serVices

9.

responses To eMerging needS

saFeTY in riverS

with our know-how, we endeavour to elabo-rate new services which will respond to the emerging needs of the hydro-electric owners.

expertise

• Aptitude for service it evaluates structural stability of installations

technically, given the mechanical demands imposed by electricity production.

• risk Management it limits the uncertainty related to the exploi-

tation of development and the carrying out of important maintenance projects.

• Management of sediment it ensures the functionality of safety organs

and hydroelectric production structures with regard to silting.

hYDro exploitation takes into consideration the potential risk caused by the frequentation rate of flooding of waterway surrounds.

high summer temperatures favour melting of glaciers and violent storms fill hydroelectric installations. The surplus discharges in rivers provoke rises in water levels, which are as sud-den as they are significant.warning notices clearly highlight the danger-ous locations.

we offer several services enabling the identifi-cation and the estimation of reducing danger in rivers linked to the exploitation of develop-ments:

• an analysis of danger in order to evaluate the probability of a person confronting a sudden rise in water level in a particular zone and the possible consequences for the person

• installation of a luminous beacon and explicit photographs further enable the perception of danger;

• commitment of “HYDRO Guides” to provide direct and personalised information on site.

Développement

• Auscultation and underwater engineering with the aid of a robot equipped with cameras

and sound imaging instruments, we draw up a report of the state of underwater elements, with a minimum impact on production. our specialists intervene with specific targets.

• Sediment extraction using underwater pumps, we proceed to the

localised extraction of accumulated sediment from the strategic parts of the compensating basins.

• Bathometry our multi-beam echo-sounder measures the

state of silting of these elements before and after our intervention. it also quickly calculates the volume of water stocked behind the dam.

11.

our clienT, A pArtner

a commiTmenT to quAlity

hYDro exploitation establishes a privileged relationship with its clients whom the company considers as fully fledged partners. The size of our company ensures clients of an optimal cost-performance relationship.

Based on well-known competence, proximity, flexibility and transparency, our relationships with our clients are inevitably long-term.

hYDro exploitation has committed itself to quality: this is linked to the safety of people and equipment, but also to management of the company and to the environment.

hYDro exploitation commits itself to legal demands, regulations and agreements in the sector, in order to prevent pollution related to its activities, to improve its environmental performance each year.

we are certified:

• iSo 14001: management of the environmentt• iSo 9001: management of quality• ohSAS 18001: management of safety• iSo 3834: welding techniques• iSo 31000: danger management

our virtues

• unique experience and tested competence of electric production development, whatever their type and their size

• a portfolio of extensive services covering all electric production sectors, advice in servic-ing, up to integral exploitation of site

• a vision of long-term management • dedicated infrastructures, with central work-

shops offering large flexibility • innovative and economic solutions, safe and

respectful of the environment for globally demanding projects

hydroexploitAtion

rue Des creuSetS 41

case posTale 750ch - 1950 Sion

Tél. +41 (0)27 328 44 11Fax +41 (0)27 328 44 12

www.hydro-exploitAtion.ch

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