Ellicott® announces the New and Innovative SANDMINER™ Aggregate Production Dredge

December 2001

The new and innovative SANDMINER® aggregate production dredge, is a new concept in improving the productivity of sand and gravel producers.  This new design, utilizing a tri-tubular truss ladder concept, along with advanced instrumentation capabilities, dramatically reduces cost per ton figures and still is built to Ellicott®'s legendary standards for ruggedness and durability.

SANDMINER® SERIES 1260
Diesel Cutterhead Dredge
for 60 Ft (18.29 m) Digging Depth
(Contact Ellicott® for additional information)

OVERALL DESIGN CRITERIA:

• Catamaran Design with ladder trunnions aft.
• Mid structure truss of I-beams and tubular steel for torsional stability and control room support.
• Triangular tubular ladder structure with integrated flotation tube.
• Electric over hydraulic controls.
• Tubular bow gantry; 24" (609 mm) diameter by ½" (12.7 mm) wall.
• One Way Transportable hull with site erection and launching.
• Optional PLC or PC Control and Plant Integration.

SIDE HULL TANKS: [ONE [1] PORT AND ONE [1] STARBOARD]:

• Welded steel construction.
• 5/16" [9.5 mm] end plates.
• 5/16" [9.5 mm] bottom plate.
• 5/16" [9.5 mm] side plates.
• 5/16" [9.5 mm] deck plate.
• External keel cooling tubes.
• Built-in fuel oil tanks.
• Watertight manhole covers.
• Four [4] deck cleats two (2) each side [mounted on outboard edge forward and aft].

Length	Moulded -  each tank	60 ft	18.29 m
Depth		5 ft	1.52 m
Width		10 ft	3.0 m

LADDER MOUNTED SUBMERGED DREDGE PUMP:

• Thomas - underwater pump 12" x 14".
• 13" [330 mm] suction.
• 12" [305 mm] discharge.
• 36" [914 mm] diameter high efficiency impeller.
• Alloy cast iron [Ni-Hard 4] wearing parts - pump case, impeller and head liners - 500 BHN minimum.
• Heavy duty alloy steel pump shaft with high capacity anti-friction spherical roller radial and thrust bearings.
• Hollow line shaft driven with intermediate bearing and flex plate couplings.
• Head tank for pump bearing housing positive internal oil pressure to insure bearing lube oil protection and keep water out.

DIESEL ENGINES FOR SUBMERGED DREDGE PUMP AND AUXILIARY CIRCUITS:

• Dredge Pump Caterpillar Model 3412 DITA keel cooled with residential muffler. Rated 715 bhp [533 bkw] continuous at 1800 RPM (rating at flywheel). Flywheel mounted marine transmission, 2.76:1 ratio with   C.C.W. rotation output shaft (as viewing engine flywheel).
  
• Hydraulic Pump: Caterpillar Model 3406C DITA keel cooled with   residential muffler. Rated 449 SHP [335 kw] intermittent at 1800 RPM   (rating at flywheel).
  
• 24 volt D.C. electric starting with 100 amp alternator and 220 amp-hour batteries with plastic battery box and cables included.

• Throttle control operable from operations room on pump engine only.
  
• Remote oil pressure and jacket water temperature gauges and tachometer in lever room.

SWING WINCHES:

• Two [2] reversible independent hydraulically driven swing winches – 15,400 pounds line pull @ 120 feet per minute.
• 5/8" [16 mm] diameter rope.
• Totally enclosed planetary gearing with anti-friction bearings.
• Gear type hydraulic motor.
• Dynamic hydraulic braking for normal swinging for reduced maintenance.
• Totally enclosed automatic mooring brake - friction type.
• Controls for each winch in lever room.

LADDER HOIST:

• One reversible independent hydraulically driven ladder hoist winch - 24,500 pounds line pull @ 115 feet per minute (both directions).
• 3/4 inch (19 mm) diameter rope.
• Dynamic hydraulic braking @ three times rated drum torque.
• Totally enclosed automatic mooring brake - friction type.
• Totally enclosed planetary gearing with anti-friction bearings.
• Gear type hydraulic motor.
• Ladder hoist winch with forward bow gantry. Hydraulic motor.
• Reinforced truss member for winch support.
• Single control from operations room with raise, lower and neutral positions.

STERN WINCH:

• One reversible independent hydraulically driven stern winch – 15,400 pounds ((6985 kg) line pull @ 120 feet per minute.
• 5/8" [16 mm] diameter rope
• Totally enclosed planetary gearing with anti-friction bearings.
• Gear type hydraulic motor.
• Dynamic hydraulic braking for normal swinging for reduced maintenance.
• Totally enclosed automatic mooring brake - friction type.
• Single lever control in operations room.

OPTIONAL FIVE WIRE SYSTEM

• Two additional interdependent hydraulically driven winches - same as stern winch with a three (3) sheave stern swivel assembly.

HYDRAULIC SYSTEM:

• Multiple hydraulic gear pumps coupled to diesel engine.
• 175 gallon [662 liter] reservoir with level gauges, temperature gauges and hydraulic oil.
• Individual circuits for cutter, swing winches, stern winch and ladder hoist. Single lever control for each function in lever room.
• Pumps protected with suction strainer [75 mesh, with magnets] and return line filter [7 micron] with pressure filter in charge pump circuit.
• All circuits protected against over pressure.
• Forward, neutral and reverse available for all functions. Speed control provided for swing winches and cutter.
• Mobile EAL Envirosyn (or equivalent) biodegradable environmental hydraulic oil optional

DREDGE PIPING:

• 13" I.D. X 1/2" wall [330 mm I.D. X 12.7 mm] mild steel suction pipe bolted on ladder.
• Flanged suction cleanout trap with gasketed cover provided on ladder pump. [Stone box]
• 12" I.D. X 3/8" wall [305 mm I.D. X 9.5 mm] mild steel discharge pipe on ladder and hull with standard connector flange at stern.
• 12" I.D. discharge hose at trunnion end of ladder for connection to hull mounted discharge pipe.

SERVICE WATER SYSTEM (FOR DREDGE PUMP GLAND FLUSHING):

• Centrifugal service water pump - anti-friction bearings - cast iron construction - provides 60 GPM [227 l.p.m.] and minimum of 10 psi [0.7 kg\cm2] over dredge pump discharge pressure.
• Cleanable strainer and shut-off valve.
• Deck wash valve [hose bib] included.

ELECTRICAL SYSTEM:

• 24 volt D.C. circuit powered from diesel engine starting batteries.
• 12 volt control room outlet for radio

LIGHTING SYSTEM:

• 24 volt D.C. lighting system.
• Two [2] floodlights for aft end, two [2] floodlights for forward end - 24 volt
• One [1] dome light in lever room - 24 volt

LEVER ROOM AND CONTROL PANEL:

• Large removable welded steel lever room with tinted Plexiglas windows all around (except for center window) and lockable door.
• 360 degree rotating operators chair with adjustable position.
• Desk type control panel with fingertip switches and knobs for all dredging functions and illuminated dials for night operation.

Following instrument controls included:

• Dredge pump vacuum gauge
• Dredge pump discharge gauge
• Port swing forward - neutral-reverse-speed control
• Starboard swing forward - neutral-reverse-speed control
• Ladder-raise-neutral-lower control
• Dynamic hydraulic braking for each swing winch

The following instrumentation is located on the M.M.I.
   (man/machine interface color touch screen).

• Cutter hydraulic pressure gauge.
• Swing hydraulic pressure gauge.
• Service water pressure gauge.
• Engine tachometers.
• Engine oil pressure gauges with alarm lights.
• Engine water temperature gauges with alarm lights.
• Engine throttle controls.
• Ladder depth gauge.
• Low level alarm for hydraulic oil reservoir.

DREDGING LADDER:

• Heavy duty tri-tubular dredging ladder fabricated from structural steel with suction pipe mounted externally to eliminate dragging at shallow digging depths.
• Approximately 89 feet [27.1 m] long from centerline of trunnion pin to end of cutter.
• 60'-0" [18.29 m] dredging depth @ 45 degree inclination.
• Heavy duty hardened trunnions with removable grease lubricated pins mounted aft.
• Steel safety links for securing ladder for towing and maintenance.
• Submerged piston type direct connected hydraulic cutter motor drive.
• 155 H.P. [116 Kw] cutter motor with 29-48 R.P.M. cutter speed.
• 41.5 inch [1054 mm] diameter - 6 blade cutter - cast steel plain edge blades with keyed and tapered shaft connection. Approximately 8,940 pounds [4,055 kg] of cutting force.
• Alloy steel cutter shaft with anti-friction bearings and watertight seal - spline connected to motor. Oil filled housing with positive internal pressure.
• Grease lubricated swing sheave blocks for 5/8 inch [16 mm] diameter rope.

SAFETY EQUIPMENT:

• Deck edge safety rail - aluminum
• Life vests (three)
• Life rings (two)
• ABC fire extinguishers (two)
• PAINTING:
  
  The dredge shall be painted according to Ellicott®'s standard schedule. The hull shall be sandblasted before painting internally and externally to a commercial grade (SSPC-SP-6). All other steel work shall be wire brushed and thoroughly cleaned of loose mill scale, rust, oil, or other foreign matter before painting.
• All other surfaces shall receive a primer coat of five (5) mils thickness of Carbomastic 15 or equal, and a finish coat of five (5) mils thickness of Carboline D890 or equal.
• The primer coat will be allowed to dry thoroughly and harden before application of the finish coat. Carbomastic 15 is a high solids aluminum epoxy mastic. Carboline D890 is a high solids epoxy polyamide.
• Colors shall be Ellicott® standard:

SHOP AND FIELD TESTING:

• The dredge shall be assembled and tested as far as practical under no load or simulated load conditions to insure proper operation.
• Upon launching and final assembly, the dredge shall be fully tested by Ellicott® to insure that all equipment is operating properly.

INSTRUCTION MANUALS AND DOCUMENTS:

Two sets of manuals shall be provided. Each set shall include the following:

• Instructions for the maintenance of the dredge
• Repair parts information for equipment manufactured by Ellicott®
• Operating instructions and parts information for equipment supplied
• Field assembly and launching recommendations

OPTIONS (AVAILABLE AT ADDITIONAL COST):

• Tool kit
• Dredge operation cables (swing, ladder lift, stern)
• Lifting rig
• Hull anodes (Cathodic protection)
• Cutter knife
• Suction cleanout knife
• Pump handling crane
• Operations room climate control
• Production meter
• 6-blade cutter with replaceable teeth
• 12-inch (305 mm) discharge hose
• Swing anchors - 2 at 500 pounds (227 kg)

SUMMARY:

All material and machinery components will be new and the workmanship shall be the highest order.

It is the policy of Ellicott® to make continual improvements in the design and manufacture of our products; therefore the right is reserved to modify these specifications to provide for the use of any such improvements which may have been developed prior to the time of actual manufacture.

For additional information,
Contact:
Paul Quinn, Director of Sales
Ph:   410-545-0240
Fax:  410-545-0293
Email: [email protected]

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