6 km-long low pressure headrace with lined inner diameter between 5.8 m and 7 m to external penstock and 177 MW powerhouse on right-hand bank of 103 cu m/sec Reventazon river. Waters from 5.1 cu m/sec Truis and 4.5 cu m/sec Turrialba rivers also feed dam to make mean annual energy of 970 GWh/y available. This is the third, and largest hydro station on the Reventazon river following Rio Macho 120 MW and Cachi 100 MW. Tunnel is being lined by precasting the invert with templates made on site and continuous casting the crown. Contract for telescopic forms for the penstock tunnel was awarded to CIFA Spa of Novate Milanese, Italy in value $1.25 million for eleven 5 m-long sections and self-propelled hydraulic traveller which moves the forms using a central beam. A special injection system allows easy stemming of the contact area. Mobile working platforms can be folded using pneumatic cylinders and can move the whole length of the forms. Visit www.cifa.com for more information. December 1999.