Hidroenergia 2008, JH 1

GRP Pipe Solutions in Hydro Power projects.

Hidroenergia 2008, JH 2

GRP Pipe Solutions in Hydro Power projects.

Jarle Hausberg,

APS Norway AS

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History of GRP, (Glass fiber Reinforced Polyester)

GRP composite was developed in USA

before the second world war.

A ”new” material with 70 years history!

From the beginning GRP was used in

pipes for the chemical industry due to

the very good corrosion resistance.

Today GRP is used in more and more

applications also due to the high

strength and low weight.

Flowtite GRP pipes for more

than 40 years!

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•Water Supply

•Sewerage

•Power

•Industrial

•Irrigation

•Desalination

Applications for GRP Pipe

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• DN100 - 4000mm

• PN1-6-10-16-25-32bar

• Standard length:

6 and 12 meter (1-18)

• Full fittings program

GRP Pipe, product range.

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Performance standards for GRP pipes

ASTM American Society for Testing and Materials

ASTM D3517, ASTM D3754, ASTM D3262

AWWA American Water Works Association

AWWA C950 and design manual AWWA M45

ISO International Organization for Standardization

ISO 10639, ISO 10467

CEN Comité Européen de Normalisation EN 1796,

EN 14364

Local, national standards and regulations.

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Water is power… power is

money!

Don't loose it on the

way!

Why GRP Pipes in Penstocks?

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Long service life

• Corrosion-resistant material.

• Low maintenance costs.

• Low Life Cycle Cost

Less head loss

•Best hydraulic characteristic

•Low friction coefficient

•Essentially constant over time.

Why GRP Pipes in Penstocks?

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Economical

• Competitive with other “traditionally” used materials

• Low installation cost, easy to assemble

• Low operating costs and long service life!

Why GRP Pipes in Penstocks?

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GRP pipes are easily transported, low weight.

(1/4 of DIP and 1/10 of concrete)

Environmental friendly, can be nested.

For hydro power penstocks different solutions

to terrain vehicle has been used, including

helicopters.

Handling and installation

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GRP pipes has a unique

feature for cold and hot

climate.

•The mechanical properties

remain the same from +30 to -

60.

•It doe's not get brittle when it is

cold.

•The pipe can be installed

above ground without any

special UV protections!

Why GRP Pipes in Penstocks?

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GRP pipes are often installed on

steep slopes, either buried or above

ground.

The challenges of such installations

must, however, be respected

Installation on steep Slopes

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A high number of GRP

penstocks have been built

around the whole word.

Only in Norway more than 270

Flowtite GRP penstocks.

DN500-2800mm, PN6-32bar.

A proven solution for more

than 40 years!

GRP Pipes in Penstocks, case studies

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GRP Pipes in Penstocks, case studies

Vangpollen Hydropower

Norway

DN700/800mm.

PN6-32bar.

Slope up to 46 °.

Installed 1989

(3,3MW, horisontal

Pelton~14,9GWh)

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Vinkelfallet hydro power station:

Norway

DN1600-1800mm L=1,6km

PN6-16

Installation in 1982

(7,1MW on two Francis turbines,

yearly production 25,6GWh)

GRP Pipes in Penstocks, case studies

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SAFA hydro power station,

Norway

DN2400/2200mm L=250m

PN6/10

Installed 2005

Difficult access downside the

plant required installation with a

crane on a barge.

Pipes painted black after

installation for the environmental

reason.

(2,2MW, 2 Francis turbines, 20GWh)

GRP Pipes in Penstocks, case studies

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LANGFJORDEN

hydro power station,

Norway

DN1200mm L=284m

PN32 (Static pressure 26bar)

Installed 2005

Pipeline on fundaments in

a tunnel from a pressure

shaft in the mountain.

Manhole DN1200/500 PN32

GRP Pipes in Penstocks, case studies

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TWIMBERG hydro power station

Austria

DN1800mm

PN10

L=4,5km (200m in tunnel)

GRP Pipes in Penstocks, case studies

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Fjardara hydro power stations:

Iceland

Station 1:

DN1000mm, L=3,8km

PN6-35bar (static pressure 33,5bar)

(6,4MW)

Station 2:

DN1000mm, L=3,4km

PN6-25bar (static pressure 20bar)

(3,4MW)

Installed in 2007/2008

GRP Pipes in Penstocks, case studies

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Environmental friendly

solutions for the future!

For generations!!

Thank you for your

attention!

GRP Pipes in Penstocks