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Special Periodic Survey (SPS) on Offshore Cranes on Pipe Layer Vessel

The special Pipe Carrier vessel and Cable Layer was undergoing 5 yearly dry-dock repairs in Singapore. ALATAS had won the tender and was contracted to provide crane services, spare parts supply and workshop component repair support and to carry out the 5 yearly crane inspection, maintenance, repairs and load testing during the dry-docking period.

The tender to Provide Crane Repair Work at Dry Dock covered the following cranes:
1x KENZ EHC 250/4500 Offshore Crane SWL 250T
1x HYDRALIFT OMCVCT 3426 Offshore Crane, SWL 155T
1x IRONFIST Service Crane, SWL 5.0T
1x HYDRALIFT KMCV 1301-5T-9M Knuckle Boom Crane, SWL 5.0T

Some of the work that Alatas had carried out:

• 5-yearly Crane Survey, according to ALATAS Modular Check List
• Load and Overload Testing
• Replacement of Main Winch Wire Rope
• Structural Inspection
• Inspection of hydraulic hoses
• Draining, Cleaning and Re-filling of Hydraulic Tank
• Inspection of Lamella Brakes, Planetary Gearbox, Hydr. Motor Splines on rope winch gearboxes and slewing gearboxes
• Replacement of Accumulators
• Overhaul of Electric Motor
• Overhaul of Main Winch Brakes including Spline Inspections, Cogwheel inspection and Backlash Measurements
• Overhaul of Auxiliary Winch Brakes including Motor and Gearbox Spline Inspections
• Overhaul of Slew Gear Brakes including Motor and Gearbox Spline Inspections
• Inspection of Slew Bearing and Slew Bearing Fasteners including Backlash Measurements
• Descaling and Painting of Boom Rest, Cleaning and Coating / Painting
• Replacement of Operator Cabin Perspex with Tempered Glass
• NDT Inspection of crane structure, using Rope Access
• Wire Rope NDT inspection
• etc..

The work and reporting was carried out to the highest standards and exceeded the expectations of the client. Especially the ALATAS lead engineers on site received praise for their professionalism and diligence.

 

       

Cable Layer with Kenz & Hydralift Crane

5t Hydralift knuckleboom crane
Kenz Crane testing
Kenz crane, load test preparation
       
Winch drive inspection by Alatas Engineers
Hydraulic inspections
Load testing with water bags
Removal of knuckleboom crane
       
Lifting off A-frame
Corroded A2B switch to be serviced
Brake & Drive Sleeve Inspection
Rope reeving in progress
       
Rope Sheave repairs
Corroded A2B switch to be serviced
Brake & Drive Sleeve Inspection
Overhauling & maintenance of Slipring connector
       
Electro motor installation after rewinding
Pump Distributor Geabox
Hollow-jack to extract rope sheave pin
Re-attaching main hook

 

 
 
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