Insulation of bottom outlet and water intake - Punt Dal Gall Dam

Описание: At the bottom of Punt Dal Gall dam, at 115 meters deep and after 50 years of operation, bottom outlet and intakes have to be rehabilitated for both power generation and water supply of downstream river

Hydrokarst is responsible for underwater work. For this project, divers worked at 115 meters depth which was a real challenge.

Hydrokarst carried out:

– Pumping and dredging work at great depth: -110 m, 2500 m3 of sediment
– Hydromechanical work: design and installation of two packers – 15 and 14 tonnes
– Underwater work on civil engineering structures a 110 m depth – Scouring / Anchors / Core drilling
– Inspection of the bottom outlet tunnel

SATURATION DIVNG:

Saturation diving equipment is property of Hydrokarst, specialized in deep diving interventions.
Once pontoons are set on the reservoir, the saturation diving system is installed on the pontoons. Chambers and technical units are connected to operate the saturation diving system.
One of the main components, the diving bell, insure the transfer of divers from living habitat on the surface to the work area at the bottom.

TIME LINE:

Introduction: 00:10
Equipment: 00:50
Saturation diving equipment installation: 01:30
Work presentation: 02:28
Dredging work presentation: 03:10
ROV exploration: 04:35
Hyperbaric medical support: 05:30
Saturation diving work presentation: 06:15
Saturation diving gas regeneration system: 07:58
Bulkheads installation: 08:40

LINK:

If you are interested about saturation diving techniques, check out:

Our reference: Punt Dal Gall project : https://www.hydrokarst.fr/en/referenc...
Our last publication for Hydro 2018 conference in Poland about benefits of saturation diving for bottom outlet rehabilitation: https://www.hydrokarst.fr/en/referenc...
Our video: World premiere, saturation work for maintenance operations in TBM - Hong Kong :    • Saturation works for maintenance operation...  

FOR MORE INFORMATION:
https://www.hydrokarst.fr/en/