Offshore Lattice Boom Crane - 70 Ton - Brand New for Sale
Worldoils Oil, Gas and Offshore Marketplace    Worldoils Oil, Gas and Offshore Marketplace

Equipment ID   : 1129
Equipment name   : Offshore Lattice Boom Crane - 70 Ton - Brand New for Sale
Category   : Cranes / Lifting equipment
Specifications   : Offshore Lattice Boom Crane for sale
Offshore Lattice Boom Crane - 70 ton
New Offshore Crane for Sale


Brand new 70T lattice boom offshore crane with ABS class
certificate and API 2C monogram


General Specification
Slewing Angle : 360º(Continus)
Slewing Speed(Full Load) : 0~0.85rpm
Luffing Time(Full Load) : 180s Up/down
Luffing Angle : +15° ~ +82°
Parking Angle : -5° ~ +15°
Operator Cabin :Left Side

Main Winch Data

Lifting Capacity(SWL) : 100T@21m,40T@45m,See Loading Chart;
No. Of Fall : 4
Working Radius : 10.0m(Min) / 45m(Max)
Main Lifting Speed(0-125T) : 18m/min
Hook Travel : 95m

Aux Winch Data

Lifting Capacity(SWL) : 20T@48m, Man Riding :1.5T
No. Of Fall : 1
Working Radius : 11.0m(Min) / 48m(Max)
Main Lifting Speed(Full Loading) : 0~67m/min
Lifting Height : 100m

Note :
All operational speeds stated above are based on average volumetric efficiencies
provided by our suppliers of hydraulic components. A speed variation tolerance of
+10% to -5% is within the accepted range and should be taken into consideration.

Hydraulic Arrangement

Hydraulic Systems
The hydraulic transmission will be designed for optimum performance within the
constraint of available horsepower. High pressure hydraulic system uses power
more efficiently and applies power as needed.

All motions controls offer infinitely variable speed and full reversing characteristics.
Two full flow filters will be installed. The filter(s) will be adequately sized for full flow
operation without causing pump cavitation. Replaceable wire mesh filter cartridge
of minimum absolute value of 40 micron will be used. The pumps will have overflow
suction independent of the reservoir, and the arrangement of piping can avoid air
pockets.

Hoisting Circuit

Each winch is driven by a common open loop hydraulic system including piston
pump piston motor and epicycles gearbox. Each winch is fitted with oil immersed,
multi-disc and dynamically rated “fail safe” brake.

The fixed displacement hoist motors offer a constant operating speed.

Slewing Circuit
The slew circuit is driven by a common open loop hydraulic system.  Dynamic
braking of slewing is by means of hydrostatic compensation. Similarly positive
locking brakes are fitted in the circuit and used as static brake;

Luffing Circuit
Luff circuit is driven by a common open loop hydraulic system. Each winch is fitted
with oil immersed, multi-disc,dynamically rated “fail safe” brake. an additional luff
ratchet cylinder is included, providing a positive means of locking the luff drum
whenever the prime mover is shutdown.

Hydraulic Piping
1. Pipes: No pipe threads will be used for the high-pressure lines larger than 3/8".
Hydraulic components that have pipe threaded ports lines will have a minimum
working pressure 300PS. .
2. Pipe fittings: Zinc plated mild steel material. External fittings are painted and
protected by Denso tape or equivalent against corrosion.
3. Hoses: High rubber quality for best resistance against sunlight and salinity,
Wire breaded for applicable specified hydraulic pressure ratings
4. Hose couplings: Zinc plated mild steel material, External couplings are painted
and protected by Denso tape or equivalent against corrosion

Hydraulic Oil Tank
1. Level gauge with isolating valve (to top cover)
2. Inspection and cleaning cover
3. Filter with fine mesh stainless steel strainer and ventilation
4. A relief valve will be installed in the discharge line of pump.

Cooling Circuit
The air-oil heat exchanger will be provided and sized to ensure continuous operation
of the crane under the ambient temperatures given on the data sheets.

Electric Arrangement
Standards, Codes and Protection
Refer to Codes Of Practice and Standards. The electrical systems onboard the crane
complies with these standards for good offshore electrical design and engineering
practices.

Standard Lighting
The following are provided as standard lighting packages for the crane. More lights can
be added according to client's request.

Description : Aviation Warning Light

Qty : 1
Size : 85 W
Location : Boom Tip
Power Supply : UPS

Description : Aviation Warning Light
Qty : 1
Size : 85 W
Location : Mast
Power Supply : UPS

Description : Florescent Access Light

Qty : 2
Size : 2 x 36 W
Location : Machinery House
Power Supply : Main

Description : High Pressure Sodium Floodlight

Qty : *
Size : 400 W
Location : Boom
Power Supply : Main

Power Supply
Main Power Supply : 440 VAC, 03 Phase,  60Hz

Electric motor(s) (for applicable zone)
Power Consumption : 400Kw+250Kw
Speed : 1790r/m
Starting method : Soft starter

Others

Junction box(es) is provided at the pedestal interface for connection to client supply.
By default only SS316 junction boxes are installed onboard.

Generally cable wires will be multi-stranded copper and protected against mechanical
 damage. All power and control cables are with XLPE/EVA/GSWB/EVA construction.
Occasionally able of XLPE/EVA/CWB/EVA is used when big power cable is part of the
design.  All electrical lines are tagged accordingly for ease of maintenance.

All outdoor equipments and instruments are Ingress Protected IP56. Indoor equipments
and instruments are rated with IP44 as minimum.

Ordinarily, the power supply for crane is transmitted from pedestal to slewing platform
through the centre slip ring to ensure the crane can work at any angle.

Control and Instruments
Cabin :
The following instruments are arranged on the console to permit the operator to maintain
an uninterrupted view of the loads and instrumentation. The two(2) motion  controls
joysticks designed according to API-2C, are ergonomically correct and easy to handle.
All instruments are clearly labeled.

1. Motion Control Joysticks:
2. “Dead-Man” Type
- Position sensitive with motion and speed infinitely variable and proportional to movement
from spring-return central position.
- Luff and slew (single left) joystick
- Main and auxiliary hoist (single right) joystick
3. Prime Mover Start/Stop Switch
4. Prime Mover Emergency Shutdown Switch
5. Slew Brake Control Lever for option
6. Safe Load Indicator System
7. Visual and Audible Annunciator Panel (See SAFETY FEATURES)
8. Boom Hoist Down Override Switch
9. Pressure Gauges: Boast Control / Hoist / Slew / Luff
10. Electrical Switches:
11. Lighting
12. Windshield Wipers & Washer
13. Warning Horn
14. Air Conditioning
15. Main and Auxiliary Hoist selector
16. Tachometer

Hoist Mechanisma

Hoist Winch Data
Feature : Hoist Drum
Description - Material, Details : Cast Steel, Remark : 100% NDT
Description : Groove, Remark : Reeving not over 3 layers
Description : Support End, Details : Anti-friction Bearing

Feature : Braking
Description : Type
Details : 1x Band Brake, Remark : Asbestos free lining, for man riding winch only
Details : 1x Multi-disc Brake, Remark : Positive Locking
Details : 1x Load valve, Remark : As dynamic Brake

Description : Safety Factor
Details : Minimum 2.0

Feature : Rope Anchors
Description : Type, Details : Bolted rope clamp,
Remarks : For ease of rope replacement

Description : Safety Factor, Details : Minimum 1.1,
Remarks : Ensures rope breaking strength when over loaded

Feature : Ratios

Description : Drum to Rope
Details : Min.19 : 1
Remark : Drum pitch diameter over rope diameter

Feature : Safety
Description : Drum flange beyond top layer,
Details : 2.5 x rope diameter,
Remark : To avoid rope jumping out of drum unintentionally

Description : Fleet angle
Details : < 2.5⁰
Remark : Ensures smooth and even rope spooling at all times

Description : Dead turns on the drum
Details : Min.5
Remark : Amount of rope that is not in used even at the maximum
hoist reach of the crane

Luffing System
Feature : Hoist Drum
Description - Material, Details : Cast Steel, Remark : 100% NDT
Description : Groove, Remark : Reeving not over 3 layers
Description : Support End, Details : Anti-friction Bearing

Feature : Braking
Description : Type
Details : 1x Load Brake, Remark : As dynamic Brake
Details : 1x Multi-disc Brake, Remark : Positive Locking
Details : Ratchet and pawl, Remark : Luffing locking device

Description : Safety Factor
Details : Minimum 2.0

Feature : Rope Anchors
Description : Type, Details : Bolted rope clamp,
Remarks : For ease of rope replacement

Description : Safety Factor, Details : Minimum 1.1,
Remarks : Ensures rope breaking strength when over loaded

Feature : Ratios

Description : Drum to Rope
Details : Min.19 : 1
Remark : Drum pitch diameter over rope diameter

Feature : Safety
Description : Drum flange beyond top layer,
Details : 2.5 x rope diameter,
Remark : To avoid rope jumping out of drum unintentionally

Description : Fleet angle
Details : < 2.5⁰
Remark : Ensures smooth and even rope spooling at all times

Description : Dead turns on the drum
Details : Min.5
Remark : Amount of rope that is not in used even at the maximum
hoist reach of the crane

Boom Luffing-in limit buffer
 Anti-backward limit is used to prevent the boom over luffing in order to protect boom.

Mast
The Luffing sheaves are placed on the mast (A-frame) which is fitted with a top platform
for maintenance and inspection of the mast head sheaves, luff hoist rope and anchor
connections. Access to the Top Platform is by ladder from the machinery deck. The
mast is pin connected to the machinery deck.

Slew Mechanisms
Slew Bearing
Brand - ROTHE-ERDE XUZHOU or equivalent
Rolling Element - Triple Cylindrical Roller
Lubrication
- Grease holes in diagonal orientation in outer ring
- Lubrication  lines  are  fitted  on  the  machinery  deck for refilling grease into the bearing

Boom
Length - 48M
Type - Reinforced Lattice Structure
Pins - High Tensile
Connectors - Cast Steel
Welding Test - NDT 100% MPI, 100% UT/RT
Boom Top Platform - Both Sides

Safety  
Hardwood blocks - To prevent rubbing of ropes on boom bracing damaging paint and
cause unnecessary rusting.
Walkway paths - 760mm wide grating along and inside of boom for maintenance
access
Handrails  - Along boom section

Boom Bottom 
Type - Reinforced Lattice Structure
Material - High Tensile Low Alloy Low Carbon Seamless Chords with stell bracings

Boom Intermediate Section
Type - Reinforced Lattice Structure
Material - High tensile low alloy low carbon seamless chords

Boom Head
Type - Reinforced Lattice Structure
Material
- High tensile low alloy low carbon seamless chords
- With Mild Steel Bracings
- High Strength Steel Head Plate

Reeving System
Sheaves
Materials - Steel
Processing Technique - Cast
Ratio - 20 : 1 (Sheave diameter / Rope diameter)
Lubrication - Lubrication through sheave pin
Bearing - Heavy duty sealed cylindrical roller

Ropes
Rope Size (mm)
Design Factor -
Main Hoist and Auxiliary Host : Minimum 5.0
Luff Hoist and Pendant : Minimum 4.0

Rotation Characteristic -

Main Hoist and Auxiliary Host : Non.Rotating
Luff Hoist : Low Rotation
Pendant : Non-Rotating

Construction -
Main Hoist and Auxiliary Host :  RH and WSC
Luff Hoist : RH and IWRC
Pendant : WSC

End Connections -
Main Hoist, Auxiliary Host, Luff Hoist and Pendant :
Solid Thimble

Finishing -
Main Hoist, Auxiliary Host, Luff Hoist and Pendant :
Compacted and Galvanized

Hooks
Basic design factor of the hook is more than 4.0. The hooks are made of cast steel
and tested to -40°C, or -6°C below lowest design temperature. All hooks come with
lockable safety latch and swivel bearings.  Hook blocks will be of significant weight
to prevent unraveling of rope while unloaded.

Machinery Deck

Machinery Turrent
The Turret is made of high strength steel.  Depending on crane model and configuration,
most mechanical and control components such as the Power Pack,  Cabin and
Winches are placed on the Turret for best operational efficiency. Kicker  plates are
installed for safety as well as handrails around the Turret.

Operator Cabin

Structure - Steel plate
Position - Port of crane
Acoustic Shield - Noise level during operation ≤ 75 dBA
Weather  Shield - Complete sealed through for water runoff

Visionary  

Forward Windows - Clear Safety Glass
Side Windows - Clear Safety Glass; open-able
Rear View Mirror - N/A

Safety Equipment  
Safety Bar - Front & side windows to prevent accidental fall
Horn - Electric warning horn
Fire Extinguisher - 1.5kg Dry Powder

Accessibility  
Headroom - 2.1 meters
Door - Side slip door with lock
Maintenance
- Removable panels for access to cables & hoses
- Rooftop access for air conditioner maintenance
- Side access to front of cabin for window clearing and wiper replacement

Other Accessories  
 
Chair - Fully adjustable cushioned type
Communication - Equipment (PA Speakers Telephone set, VHF/UHF radios
and lound speaker with microphone system) free issue by shipyard.
Control Console - See CONTROLS AND INSTRUMENTS
Power - Power socket
Lighting - See ELECTRICAL SYSTEM
Windshield Wiper -  Electrical type
Air Conditioning - Roof top unit
Engraved Stainless Steel Plate
- Design certified load chart
Rope specification chart
- API monogram

Safety Features
Cabin
An annunciator is mounted in the cabin to alert the operator of possible risky
crane operation to avoid unfavorable incidents. This will be a solid state unit  “first out” alarm
sequence giving both audible and visual warning and fitting with test and acknowledgement buttons.

The audible and visual alarming signals are provided as following
:
- High Return Pressure(filter jammed)
- Hoist Up Limit
- Hoist Down Limit
- Luff Up Limit
- Luff Down Limit with override for stowing
- Hydraulic Temperature High
- Hydraulic low level

Crane Operation Limit
Limit  switches  are  provided  to  define  safe  working  limits  of  all  crane  operations including
hoisting and luffing.
The functions of the limit switches are :
Operation : Main/Aux. Hoist
Detective Level : Upper Working Limit
Action : Stop Up Motion
Deactivation : Hoist Down

Detective Level : Lower Working Limit
Action : Stop Down Motion
Deactivation : Hoist Up

Operation : Boom Hoist
Detective Level : Lower Working Limit
Action : Stop Boom Down Motion
Deactivation : Boom Up or Override for Stowing

Detective Level : Upper Working Limit
Action : Stop Boom Up Motion and A&V warning
Deactivation : Boom Down

Detective Level : Ultimate Up Limit
Action : Stop Boom Up Motion and A&V warning continued
Deactivation : Boom Down

Safe Load Indicator
The Safe Load Indicator will provide the following to the operator:

- Crane rated capacity (T)
- Actual  load on hooks (T)
- Boom radius (meters)
- Boom angle (Deg rees)
- Visual alarm at 90% SWL
- Intermittent horn at 100% SWL
- Loud continuous horn at 105% SWL
- Overload cut off switch
- Mechanical  boom  angle  installed  at  the  boom  where  visible  from operator cabin

Standard Practices
- All ladders are welded with square rungs in diamond orientation with ladder cages.
- All handrails are made of galvanized pipe 48.3mm OD,  except those on boom sections
for weight saving purposes
- Cable trays are SS316 perforated.  Cables and hoses are secured with SS cable ties.
- All machined pins, end covers, and small adaptors are zinc plated to approximately 15
micron thickness.
- All fasteners M12 and below used are SS304.  All fasteners above M12 are Grade 8.8 or
equivalent, fluorocarbon coated.
- Slew bearing fasteners are ISO Grade 10.9, fluorocarbon coated
- Clear labels on all critical equipment onboard
- SS304 and/or white traffolyte with black inscriptions are chosen as standard for labeling

Surface Treatement
External Treatment :
Pedestal, crane house and boom -
- Surface preparation to ISO 8501-1, SA 2.5
- First coat zinc rich epoxy primer to 50 µm dry film thickness
- Second coat two pack epoxy to 100 µm dry film thickness
- Third coat polyurethane finish to 65 µm dry film thickness
- Total : three coats to 200 µm dry film thickness

Internal Treatment :
Pedestal and crane house -
- Surface preparation to ISO 8501-1, SA 2.5
- First coat zinc rich epoxy primer to 40 µm dry film thickness
- Second coat two pack epoxy to 75 µm dry film thickness
Oil tank (integrated in crane house) -
- 16.2.2.1 Surface preparation to ISO 8501-1, SA 2.5
- 16.2.2.2 First coat zinc rich epoxy primer to 40 µm dry film thickness

Boom -
No treatment as fully closed steel box structure

Price & terms : Please enquire using the email form below.

If you cannot find the vessel, crane, rig or equipment that you need,
please send us an email to [email protected] stating your
requirements and we shall find it for you.

We can arrange delivery of equipment and towage of rigs and vessels where needed.

The details mentioned above are believed to be accurate but are not guaranteed.

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Worldoils Oil, Gas and Offshore Marketplace
Worldoils Oil, Gas and Offshore Marketplace - Offshore Lattice Boom Crane - 70 Ton - Brand New for Sale
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