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French utility seeks concrete rehabilitation at Chambon Dam

CHAMBERY, France 11/23/11 (PennWell) -- Electricite de France (EDF) seeks bids for three lots to rehabilitate concrete damaged by alkali-aggregate reaction at Chambon Dam on the Romanche River in eastern France. Bids in separate solicitations are due December 6.

Chambon is a 90-meter-tall, 293-meter-long concrete gravity dam in France's Isere Department, a high-altitude region subject to severe winter weather. EDF is replacing or rehabilitating concrete that has expanded and cracked due to alkali-aggregate reaction. (HRW July 2010)

EDF seeks bids for three separate lots:
o Lot 1, reference No. rfi 53911: reinforcement of the monolith at the top of the dam using pre-stressed anchors, containing the upstream area with carbon-fiber fabric, and patching of the downstream face;
o Lot 2, reference No. rfi 53975: concrete sawing seven vertical slits at the top of the dam from 11 to 16 millimeters, the two highest measuring 42 meters, for a total surface sawed of 2,500 square meters;
o Lot 3, reference No. rfi 53964: removal of upstream waterproofing membrane and installation of a new membrane after construction.

The three lots are expected to require from 27 to 28 months each.

Solicitation documents may be obtained from the address below. Bids are due by 4 p.m. December 6 via EDF's purchasing website, http://portail-achats.edf.com.

For information, contact EDF SA - Direction des Achats, Agence Achats Hydraulique, 13 Rue Jean Girard Madoux, 73026 Chambery, France; Lot 1, Attn.: Dominique Petit, (33) 479-264934, E-mail: dominique.petit@edf.fr; Lot 2, Attn.: Philippe Chretien, (33) 479-264953, E-mail: philippe.chretien@edf.fr; Lot 3, Attn.: Valerie Gambiez, (33) 479-266818, E-mail: valerie.gambiez@edf.fr; Internet: www.edf.fr.

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