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ROYAL IHC

DREDGINGROYAL IHC

IHC TT-PUMP UNITAND IHC OTTER

SUBMERSIBLE DREDGEUNITS FOR SMALL-SCALE, MULTI-PURPOSE DREDGING ACTIVITIES

The IHC TT-Pump, a compact dredge pump unit, and the IHC Otter, a small dredger utilising the IHC TT-Pump, are completing the portfolio of IHC’s hydraulic dredging equipment.

IHC TT-PUMP UNITSSUBMERSIBLE DREDGE UNIT FORMULTI-PURPOSE DREDGING ACTIVITIES

The IHC TT-pump units are a complete range of compactdredge pumps which provide customers with one of themost cost effective solutions to dredge slurry for smallerdredging projects. The dredge pump is mainly used todredge silt, medium sand and gravel.

BENEFITS versatile and flexible high efficiency large sphere passage multi-purpose use cost effective easy to handle, operate and maintain wear resistant Maxidur® 5.

OUR SOLUTION TO YOUR PROJECTTT-pumps can be operated from excavators, suspendedfrom cranes, or be fitted to small pontoons withhoisting or ladder arrangements.

HYDRAULIC POWER PACKThe hydraulic power pack provides power for operationof the TT-pump when attached to an excavator, suspended from a crane or deployed from a pontoon.

JET WATERA separate jet water unit can be supplied for the standard sand production head. The jet water pump is driven directly from the hydraulic power pack.

CUTTERThe jet water for the standard sand production head isnot always capable of fluidising the material to bedredged. For these situations, a hydraulic cutter unit canbe supplied. The rotating cutter head loosens the materialwhich is then picked up by the dredge pump withminimum spillage. The hydraulic cutter unit can only beoperated from a boom or an excavator.

HOSES AND PIPELINESHydraulic hoses, jetting water hoses, and discharge hosescan be supplied when required. Discharge hoses can include rubber hoses, floating hoses and HDPE lines.

EXCAVATOR ADAPTERIHC TT-pumps are supplied standard for suspended wireoperations. For operation from an excavator, an adaptorunit can be supplied.

PRODUCTION SENSORS AND AUTOMATIONFor operational and production management, a range ofsensors and instruments can be supplied. The output datais displayed via an HMI, and includes flow, density, pumpspeed, discharge pressure and depth measurement.

ACCESSORIES

IHC TT-PUMP UNITS

MAIN SPECIFICATIONS

TT 15-65 TT 20-95 TT 24-150 TT 30-250 TT 35-375

PERFORMANCEMax. pump powerMax. working pressure

HYDRAULIC REQUIREMENTSOil flowOil pressure ΔP at motor

JETWATERCapacityPressure

DREDGE PUMP DIMENSIONSSuction diameterDischarge diameterBall passage

WEIGHTBasic pump unit (excl. suction head)Standard sand production headCutter unit

375kW5 bar

880l/min296 bar

280m3/h8 bar

350mm330mm220mm

5,410kg550kg1,450kg

250kW5 bar

610l/min280 bar

210m3/h8 bar

300mm300mm185mm

4,250kg500kg1,375kg

150kW5 bar

445l/min240 bar

145m3/h8 bar

240mm200mm140mm

2,400kg450kg890kg

95kW5 bar

255l/min280 bar

95m3/h8 bar

200mm200mm125mm

1,600kg375kg725kg

65kW5 bar

225l/min205 bar

65m3/h8 bar

150mm150mm95mm

795kg150kg650kg

TT 15-65 TT 20-95 TT 24-150 TT 30-250

CUTTER DRIVEMax. power at shaftOil flowOil pressure ΔP at motor

DIMENSIONSA: Height standard pumpB: Diameter standard pumpC: Height standard sand production headD: Height cutter unit

46kW105l/min296 bar

2,540mm1,600mm3,170mm1,955mm

44kW105l/min280 bar

2,060mm1,450mm2,170mm1,825mm

25kW70l/min240 bar

1,740mm1,250mm2,050mm1,700mm

21kW51l/min280 bar

1,675mm1,050mm1,790mm1,450mm

13kW42l/min205 bar

1,220mm850mm1,300mm1,350mm

TT 35-375

OPTIONAL SUCTION HEADS

A A

D C

B B

IHC OTTERDREDGERS UTILISING THESUBMERSIBLE IHC TT-PUMP

The IHC Otter is a range of compact dredgers serving as platform for deploying the well-known IHC TT-Pump, which provide customers with a compact, cost-effective solution to dredge slurry for smaller dredging projects.

The IHC Otter is mainly used to dredge silt, medium fine sand and gravel and combines the advantages of the IHC TT-Pump unit into a single dredging solution.

KEY FEATURES compact size allowing easy access in confined

waterways and alongside quay walls modular design for configuration

of vertical deployment the standard vertical deployment utilizes

an outboard design, with a moonpool option also available

dismountable design for easy transportation by road, rail or ship

vertical deployment allows for dredging at depths of up to 50 meters

low capital cost making it a suitable option for dredging operations with a smaller budget

rugged and robust the IHC Otter is designed for the harsh conditions

encountered in remote locations.

EASY MAINTENANCEThe design is based on the principles of production maximisation and reliability, and its cost-effective design reduces the need for specialised maintenance personnel.

MODULAR AND EASY TO TRANSPORTThe IHC Otter is constructed from a set of standard modular components that can be used to suit the complete range of IHC TT-Pumps. The components are designed to fit into standard 6m and 12m shipping containers for easy transportation.

DREDGE INSTALLATIONIHC TT-PumpDischarge pipe diameterMax. pump powerMax. working pressure

DIMENSIONLength overall (TT-Pump raised), approx.Length over pontoonsBreadthPontoon depthDry massDraughtTotal installed powerMax. dredging depth

RIGGINGHoisting winch (hydraulic)Line pull, first layerMax. line speed

Mooring winches (hydraulic, 3x)Line pull, first layerMax. line speed

TT 20-95200mm (8")95kW5 bar

14.5m11.4m7.4m1.06m17.6 ton0.31m232kW50m

55kN16m/min

30kN12m/min

TT 24-150250mm (10")150kW5 bar

14.5m11.4m7.4m1.06m19.7 ton0.34m410kW50m

55kN16m/min

30kN12m/min

TT 35-375350mm (14")375kW5 bar

17.6m14.4m7.4m1.06m31 ton0.36m883kW50m

110kN7m/min

30kN12m/min

TT 30-250300mm (12")250kW5 bar

17.4m14.4m7.4.m1.06m27.1 ton0.32m510kW50m

110kN7m/min

30kN12m/min

IHC OTTER - VERTICAL DEPLOYMENT

SPECIFICATIONS

SERVICE AND OPTIONAL PACKAGESIHC can provide a comprehensive list of spare parts, operational and maintenance training, and support to suitthe needs of customers, as well as a variety of optionalpackages such as comfort, HSE, production, positioning etc. to enhance the IHC Otter. Customisation of the IHC Otter can also be requested in order to meet specific project requirements.

BOOSTER STATIONSAdding extra pumping power can significantly help to improve production levels when pumping over longer distances. This can be achieved by using a booster station: a separate additional pump placed along the discharge line.

OPTIONS

IHC TT-pump is suspended from a wire rope dredge depths up to 50m below surface level IHC TT-pump features jet water system for

agitating material during dredging operation

suitable for soil types such as silt, medium fine sand and small stones

best suited for dredging loosely packed material.

OTTER 20v OTTER 24v OTTER 30v OTTER 35v

DREDGE INSTALLATIONIHC TT-PumpDischarge pipe diameterMax. pump powerMax. working pressureMax. cutter power

DIMENSIONLength overall with TT-Pump raisedLength over pontoonsBeam overallPontoon depthDry massDraughtMax. standard dredging depth

SWING WIDTH WITH 35º SWING ON EACH SIDEAt max. dredging depthAt min. dredging depth

RIGGINGHoisting winch (hydraulic)Line pull, first layerMaximum line speed

Mooring winches (hydraulic, 3x)Line pull, first layerMax. line speed

TT 20-95200mm95kW5 bar21kW

16m11.4m7.4m1.06m18.4ton0.33m10m

24.5m28.5m

55kN16m/min

30kN12m/min

TT 24-150240mm150kW5 bar25kW

16.3m11.4m7.4m1.06m19.8ton0.34m10.5m

25m29m

55kN16m/min

30kN12m/min

IHC OTTER - HORIZONTAL DEPLOYMENT

SPECIFICATIONS IHC TT-pump features cutter unit for cutting dense

and compacted material suitable for higher density material such as

compacted soil and clay

not suitable for materials such as hard rock dredge depths up to 10m below surface level.

OTTER 20H OTTER 24H

THE SAND TYPES AS INDICATED IN THE PRODUCTION GRAPHS ARE DEFINED AS FOLLOWS:

SITUSAND TYPE GRAIN SIZE DENSITY

Silt + 50% fine sand 0.059mm 1,600kg/m3

Medium fine sand 0.236mm 1,950kg/m3

Gravel 7.276mm 2,200kg/m3

Dredging depth 10mGeodetic head 4m

The graphs below show the performance of the IHC TT-pump units and IHC Otters. The output is expressed in cubic meters of in-situ solids per effective pump hour, with a maximum volume concentration of 25%, plotted against the discharge length per TT-pump unit type. Depending on the required output these graphs can help in choosing the right TT-pump for the job at hand.

WHICH TT-PUMP IS RIGHT FOR YOUR PROJECT?

MEDIUM FINE SAND

0

100

200

300

400

500

600

700

800

900

500

1,000

1,500

2,000

2,500

3,000

3,500

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PIPELINE LENGTH IN METRES

TT 15-65TT 20-95

TT 24-150TT 30-250TT 35-375

400

800

300

100

500

200

600

900

0

200

400

600

800

1,000

1,200

1,400

1,600

700

GRAVEL

PIPELINE LENGTH IN METRES

OU

TP

UT

IN M

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HO

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TT 15-65TT 20-95

TT 24-150TT 30-250TT 35-375

0

100

200

300

400

500

600

700

800

900

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

SILT AND 50% FINE SAND

PIPELINE LENGTH IN METRES

OU

TP

UT

IN M

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TT 15-65TT 20-95

TT 24-150TT 30-250TT 35-375

The IHC TT-Pump and the IHC Otter, deploying the TT-Pump, are applicable to many small scale dredging activities due to their compact size and easy transportability. Their size and manouverability allows easy access in for instance, confined waterways and alongside quay walls. Their main applications are:

MAINTENANCE DREDGING environmental dredging inland waterways (rivers, canals/waterways, ports/

harbours) reservoir dredging or power plant maintenance.

MINING construction or heavy mineral sand mining alluvial gold or diamond mining oil sands mining tailings.

IHC TT-PUMP AND IHC OTTERPROJECT APPLICATIONS