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Project Details

The Challenge

DREDGING

Highlights :

Customer:Location:

Working Conditions:

Pipes Used:

Application:Length:

Year:

Constant crystallization of salt on the bottom of the evaporation ponds of Dead Sea Works caused a rise in the water level, threatening the harvesting of minerals from the Dead Sea and nearby hotel resorts. The Dredging operations were facing serious problems since the existing pipeline needed to be replaced every 3 months, due to wear related failures.

Pipe materials tried prior to PEXGOL:

Rubber pipes: were damaged by weather conditions and suffered from abrasion. Maintenance and replacement were expensive.

Steel pipes: suffered from both internal and external corrosion. Pipeline is not flexible and salt accumulated on the pipe.

HDPE pipes: offered short lifetime due to low resistance to high temperatures and abrasion.

PEXGOL Solution

Based on two decades (at the time) of exposure to harsh conditions and thousands of meters of PEXGOL pipes, with their unmatched abrasion resistance - it was clear PEXGOL was the best solution for the client's situation. The pipes keep their internal smooth surface and had no failures since 1992.

Easy To handle: the durability of PEXGOL enabled the operator to be less careful in handling the pipe, allowing it to be dragged, bent, cut and dropped as happens during work.

Excellentchemical,corrosionandtemperatureresistance:excellent resistance to mixture of salt crystals & water and high working temperatures.

Superb internal and external corrosion resistance: PEXGOL has been proven to withstand decades of exposure to corrosive environments, with perfect performance in some of the world's harshest environments, such as the Dead Sea.

Highresistancetowear: PEXGOL is a preferred solution for transportation of abrasive materials.

Low weight: In comparison to steel or rubber, thereby reducing related transportation, storage and labor costs due to lower weight per meter.

Creep and impact resistance: Due to cross linking, PEXGOL pipes can withstand combinations of axial and radial stresses. PEXGOL is also highly resistant to impact, fracture and fatigue, making it entirely resistant to cracks, even when dragged over sharp and rocky terrain and sharp coagulated salt crystals.

Economic Benefit

PEXGOL Advantages

The original Mean Time between Failures (MTBF) was 3 months. Changing to PEXGOL extended that time to 60 months (the remaining life time of the project). Without PEXGOL the client would have changed the entire pipeline 20 times over the life of the project. Furthermore, the pipes will be reused in the future during the next phase of the project.

Transportation of dredged crystallize salt sediment (at 30% concentration)

Extremely high corrosive, high abrasive material, high ambient temperature (low 6o, high 46o), constant direct sun exposure

PEXGOL 400mm OD Class 10, 450mm OD Class 10 500mm OD Class 8

Dredged material transportationOver 5,000 meters

1992-present

Dead Sea, Israel

Dead Sea Works, ICL group

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ICLgroup-DredgedSaltTransport

CaseStudy