Load out and load in by SPMT (Self-propelled Modular Transporter) is one of the important methods in transporting oversized and overweight packages that cannot be disassembled, up to thousands of tons, besides using other methods such as skiding, winch & rail, lifting, etc.
1. Load out and Load in oversized and overweight cargo using SPMT
Load out or Load in are terms used in the Logistics industry to describe the work of transporting packages from the bottom of the ship/barge to the shore or vice versa.
Load in is the term used to describe the removal of cargo from a ship or barge to the shore/wharf and transport to a designated location at the port.
On the contrary, load out or launching is the term used to describe the movement of cargo from the shore/wharf onto a ship or barge to the exact designed position with support, lowering the cargo on the support, removing the trailer from the ship/barge, and handing over to the owner. The cargo will continue to be seafastened before being transported to the installation site.
Load out, load in method using SPMT is the most popular method today.
The loading in or loading out process using SPMT requires strict compliance with international or national standards set by the shipper. Normally, DNV – GL standards will be used for this scope of work, because most of the components have very large mass and size, thus posing a potential safety risk at all times if not well controlled throughout the process.
2. SPMT specialized equipment
The SPMT self-propelled hydraulic trailer is a specialized equipment that can be said to be the most modern up to now in loading out/in by trailer. The equipment is designed to be connected horizontally or vertically into a giant convoy with hundreds of wheels suitable for each requirement of each project’s cargo.
Some important steps are indispensable to meet the highest requirements of load out/in work with SPMT:
– Technical calculation of trailer, trailer arrangement plan suitable for size, weight, and coordinates in the center of the cargo. Calculation: trailer lifting and lowering capacity, trailer stability, pulling force, trailer durability, cargo beam durability, link bridge durability, etc.
– Technical calculation of ship/barge: Calculation of barge mooring with wharf, calculation of ballast and barge stability suitable for tidal level rise and fall during the process of moving trailer on/off barge, calculation of barge structure strength during trailer movement.
– All calculation processes will be audited by a third party, in technical terms called MWS, and approved before implementation.
When receiving goods, SPMT will move and lower under the structure floor to use the hydraulic system to lift the goods. As mentioned above, because the load out or load in packages are often very large in size and the center of gravity coordinates are often very high, so controlling the stability of SPMT during the moving process is of particular concern.
Especially when the trailer is 50% on the barge and 50% on the wharf. With the hydraulic balancing system, SPMT will help keep the cargo stable throughout the transportation route, the barge balance by ballast pump will be used to adjust the height of the barge with the wharf always at the allowed level.
SMC currently owns the world’s most modern 2021 Scheuerle SPMT equipment with a load capacity of up to 48 tons/axle – This is the largest load capacity of SPMT today.
With a team of experienced oversized and overweight transport personnel including leading experts from Europe, a team of calculation engineers, operators, HSE with over 15 years of experience in this field, a modern equipment system, SMC will be one of the top choices in the field of transporting and loading out/in extremely heavy components by SPMT to partners.
SMC’s transportation capabilities have been proven through successful projects such as:
– Load out project of oil rig base with a mass of 4,231 tons at PTSC Vung Tau port.
– Load in project of structure with a mass of 2,461 tons at Hyundai Vietnam shipyard.
– Moving SCC 800T and 1200T cranes between wind turbines to serve installation at wind power projects.
– And many other projects.