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Project
Name:
Miravalles Geothermal Power Plant Project (Unit-1,
55 MW)
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Country:
Costa Rica
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Client:
Instituto
Costarricense de Electicidad (ICE)
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Financial
Source:
Overseas Economic Cooperation Fund of Japan (OECF)
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Service
Period: December
1986 to December 1994
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Narrative
Description of Project :
ICE
planned to develop a geothermal power plant, and has been surveyed
and developed the geothermal resources. As confirmed the geothermal
power potential being more than 140 MW, ICE requested WEST JEC to
conduct a feasibility study in 1981. Obtained a loan from the OECF-Japan,
ICE constructed a 55 MW geothermal power unit with associated 230
kV transmission lines (36 km and 33 km). The construction work started
in 1991 and completed at the end of 1994.
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SERVICES provided
by WEST JEC
- Study on existing
geothermal data
- Feasibility
study including site selection and conceptual design
- Basic design
- Preparation
of tender documents
- Detailed design
of building structure and civil works including seismic design.
- Assistance
in bidding and contracting
- Assistance
in contract negotiation
- Check and
review of manufacturesf design and drawings
- Assistance
in the inspection and witness to shop tests
- Construction
supervision
- Assistance
in commissioning
- Training in
power plant design at the consultantfs home office and in construction
supervision on OJT basis.
MAIN
TECHNICAL FEATURES
| @Capacity
(gross) |
55
MW |
| @Turbine/Condenser
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| @Manufacturer |
TOSHIBA,
Japan |
| @Type |
Single
cylinder, double flow, condensing |
| @Steam
Pressure |
0.6
MPa abs. |
| @Condenser
type |
Low
level jet condenser, direct contact |
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@Generator
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| @Manufacturer |
TOSHIBA,
Japan |
| @Capacity |
61.2
MVA |
| @Voltage |
13.8
kV |
| @Frequency |
60
Hz |
| @Power
factor |
0.9 |
| @Non-condensable
Gas Removal System |
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| @Type |
2
stage ejector system and 4 stage centrifugal gas compressor
system |
| @Gas
content design value |
0.6
wt% |
| @Cooling
Tower |
| @Manufacturer |
Hamon-Sobelco
S.A. |
| @Type |
Induced
draft, counter flow, concrete structure, 5 cells |
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| Miravalles
Geothermal Power Plant Unit-1 under construction
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