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PDHonline Course C277 (4 PDH)
Dredging Methods and Equipment
Instructor: John Poullain, PE
2012
PDH Online | PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone & Fax: 703-988-0088 www.PDHonline.org www.PDHcenter.com
An Approved Continuing Education Provider
www.PDHcenter.com
PDH Course C277
www.PDHonlinw.org
Dredging Methods and Equipment GLOSSARY CALM
Catenary Leg Mooring system used for dredging and transportable.
Consolidation
Describes the effect caused by dewatering and desiccation of dredged material substrates, usually resulting in lessening of volume of the material.
Containment Area
Any site used for the temporary or permanent confinement of dredged material and may or may not have a permanent retaining structure
DPO
Direct pump out from a hopper dredge or scow.
DRP
Dredging Research Program sponsored by USACOE.
Dragline Trenching
Dewatering dredged material by making trenches inside disposal sites with dragline equipment.
Eductors
Hydraulic pump with no moving parts and requires clean water source unlike submersible pumps.
Hydraulic Pipeline
A dredged material discharge pipeline that carries slurry material to the disposal site. It may be floating or positioned on land.
IRI
Indian River Inlet used for testing evaluations of dredging and equipment.
Low Wave Energy
Wave energy with tidal ranges averaging 1 to 2 feet, in areas naturally or artificially protected from the fetches and ship traffic.
Monitoring
The collection of physical, chemical, and environmental data to determine impacts of dredging and dredged material disposal operations.
Ocean Dumping
Disposal of dredged material via barges into designated disposal sites in deep open water.
RUC
Riverine utility craft for use in water and soft mud whose flotation is provided by twin Styrofoam-filled rotors. Useful for dewatering fine-grained dredge material.
Slurry
A term describing the mixture of soil or sediment and water hydraulically dredged and pumped to a disposal site.
Turbidity
Condition in water where high sediment loads cause clouding. May smother aquatic vegetation.
Page 1 of 1
Dredging Methods and Equipment
Instructor: John Poullain, PE
2012
PDH Online | PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone & Fax: 703-988-0088 www.PDHonline.org www.PDHcenter.com
An Approved Continuing Education Provider
www.PDHcenter.com
PDH Course C277
www.PDHonlinw.org
Dredging Methods and Equipment GLOSSARY CALM
Catenary Leg Mooring system used for dredging and transportable.
Consolidation
Describes the effect caused by dewatering and desiccation of dredged material substrates, usually resulting in lessening of volume of the material.
Containment Area
Any site used for the temporary or permanent confinement of dredged material and may or may not have a permanent retaining structure
DPO
Direct pump out from a hopper dredge or scow.
DRP
Dredging Research Program sponsored by USACOE.
Dragline Trenching
Dewatering dredged material by making trenches inside disposal sites with dragline equipment.
Eductors
Hydraulic pump with no moving parts and requires clean water source unlike submersible pumps.
Hydraulic Pipeline
A dredged material discharge pipeline that carries slurry material to the disposal site. It may be floating or positioned on land.
IRI
Indian River Inlet used for testing evaluations of dredging and equipment.
Low Wave Energy
Wave energy with tidal ranges averaging 1 to 2 feet, in areas naturally or artificially protected from the fetches and ship traffic.
Monitoring
The collection of physical, chemical, and environmental data to determine impacts of dredging and dredged material disposal operations.
Ocean Dumping
Disposal of dredged material via barges into designated disposal sites in deep open water.
RUC
Riverine utility craft for use in water and soft mud whose flotation is provided by twin Styrofoam-filled rotors. Useful for dewatering fine-grained dredge material.
Slurry
A term describing the mixture of soil or sediment and water hydraulically dredged and pumped to a disposal site.
Turbidity
Condition in water where high sediment loads cause clouding. May smother aquatic vegetation.
Page 1 of 1
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