2. MWH Engineering - Guri Project Lessons
Preparing Venezuela for the 21st Century
 CORPORACION
VENEZOLANA DE
GUAYANA CVG,
The Venezuelan
Guayana Corporation
was created by the
Venezuelan
government to
develop Guayana for
the Venezuelan
people.
Guri – 10,000 MW Caroni River
The Guri Hydroelectric complex provides  Gravity Dam:
the most economical power in the world. Deflection 22 mm
Owned by Edelca, a subsidiary of CVG. Seepage 10 litres
per second
Slide 2

3. MWH Engineering - Guri Project Lessons
Staged Construction
1986
1980
1982
Slide 3

4. MWH Engineering - Guri Project Lessons
52 m Guri Dam Raising
1984
Monolith width:
First stage 21 m
Final stage 28 m
Jan Veltrop
R.P. Wengler
Dr. W.Y. Shieh
Slide 4
Dr. C.H. Yeh

5. MWH Engineering - Guri Project Lessons
52 m Guri Dam Raising
Slide 5

6. MWH Engineering - Guri Project Lessons
52 m Guri Dam Raising
 Investigate
interaction of
old & new dams
using finite
element analysis
 Temperature
control of new
concrete
Dr. W.Y. Shieh
Dr. C.H. Yeh
ICOLD Bulletin
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7. MWH Engineering - Guri Project Lessons
Spillway Aeration
8% air in boundary layer
protects against cavitation
Dr. C.Y. Wei
Dr. V. Semenkoy
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8. MWH Engineering - Guri Project Lessons
Intake Design – Record Roller Gates
Plan
Hydraulic Gate Hoist
Intake
Dr. J.E. Lindell
I.T. Laczo
Slide 8 Roller Gate
Valve

9. MWH Engineering - Guri Project Lessons
Record Powerhouse
Ten 700 MW units
Hall 25.25 m wide
364 m long
operator Two 700 ton cranes
Single Phase 268
MVA transformer
800 kv transmission
lines
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10. MWH Engineering - Guri Project Lessons
Record Turbine
Cast stainless steel
Turbine Rated
700 MW
W.E. Larson, R.W. Fazalare
J. Sun, R. Israelsen
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11. MWH Engineering - Guri Project Lessons
Record Generator 800 MVA
1200 ton rotor Machine Hall is 28 m
wide. Two 700 ton
bridge cranes lift
1200 ton rotor.
O. Deniz
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12. MWH Engineering - Guri Project Lessons
800 kV Transmission Line
4 conductor
bundles
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13. MWH Engineering - Guri Project Lessons
Guri Embankment Dam
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14. MWH Engineering - Guri Project Lessons
Guri Embankment Dam
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15. MWH Engineering - Guri Project Lessons
Guri Embankment Dam
Slide 15