Tanjung Priok super port - WorldCargo News Online

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WorldCargo news MSC goes on camera in Antwerp There are two vision systems that have been implemented at MSC Home Terminal. One is a safety system that has been installed on 23 STS cranes to give drivers a view of the crane portal area as the trolley is travelling backwards towards the shore. The second is a positioning system that has now been installed on 102 straddle carriers, to line up containers underneath them with the trolley position of the STS cranes. MSC Home Terminal has installed two new camera systems from vision specialist Orlaco Orlaco provided this graphic to illustrate the set-up on the STS cranes Safety in view Like many terminal operators MSC Home Terminal, located at the Delwaidedock in Antwerp, wanted to improve its safety performance by addressing areas where people and equipment work in close proximity. The work zone in the crane portal and backreach was a zone of particular concern. Workers would draw chalk lines on the ground to indicate where straddle carrier drivers should place containers. STS drivers travelling backwards relied on a mirror underneath the crane cab to see whether the area was clear when trolleying back from a vessel. Orlaco has developed a modular range of camera systems that can be used for applications ranging from improving visibility in safety black spots right up to supporting full remote controlled operations. MSC Home Terminal had seen the straddle carrier positioning system at APM Terminals Zeebrugge and decided to implement something similar at its own operation, which is the largest terminal in Antwerp. In line, in position The straddle carrier system uses cameras that are mounted on the spreader to show the driver when the centre of his spreader is lined up with the centre of the crane portal. Grounding the containers in the right place means the STS crane driver can land his spreader without having to use side shift on the spreader or, even worse from a productivity and power use standpoint, use gantry long travel to move the crane. Orlaco’s business development manager Twan Pelders explains that the system works using compact cameras mounted in the exact middle of the spreader on vibrationresistant mountings. The camera CARGO HANDLING More than 100 straddle carriers of different makes and age had to be kitted out detects reflective strips stuck to the sides of the sill beam on the cranes in different positions for 20ft, 40ft and twin 20ft containers. In the cab, the driver looks at a screen that shows a software image of the centre line of the spreader. When the container is in the right place the line on the screen overlays the line on the crane sill beam. MSC Home Terminal chose to use two cameras, one either side of the spreader, that feed separate displays on either side of the driver. Only one view is needed to position a container correctly, but having two cameras means a straddle carrier can enter the backreach travelling in forward or reverse and either camera will be able to see the line on the sill beam. Going well MSC Home Terminal’s assistant manager, rolling equipment, Jurgen De Breuck, said the system performs very well. Some straddle carrier drivers did not want to use it initially, but MSC Home Terminal made a decision that having people in the traffic flow drawing chalk lines on the ground was an unacceptable hazard and drivers have now adapted. Installation was relatively straight forward. The cameras are connected to the cab monitors by cable running through the straddle carrier’s umbilical or cable chain to the spreader (fibre optic cable is not required). The main challenge was installing the system on such a large fleet of straddle carriers (mainly Terex and Cargotec machines) with a mixed age profile, within three months. Finding the absolute centre of the spreader is important and Orlaco found that there were many variations in spreaders over different generation machines, said Pelders. Rear view camera The system on the STS cranes is designed to give the driver a better view of the operation as the crane travels backwards from the vessel. Most STS crane cabs are positioned behind the trolley, so the driver faces out over the vessel. When the trolley is travelling backwards the driver can see the headblock, but not any obstacles such as pedestrians or straddle carriers that might be in the load path. Each STS crane has been fitted with five compact colour cameras that give the operator an overview of the work zone between the crane legs and the backreach. The cameras are connected to a monitor in the cabin by a fibre optic cable that runs through the festoon system. The operator can switch between different images on demand or let the views cycle automatically. Think it through Adding monitors to a crane cab has to be done carefully. Drivers generally do not want to obstruct the forward and downwards views, but the monitor needs to be big enough and close enough to be clearly visible. Orlaco and MSC Home Terminal tried different combinations before they settled on a 12-in monitor that is mounted some 50-60 cms above the safety bar in the cab floor. Michel Van Ginneken, crane department manager at MSC Home Terminal, said the crane drivers did not embrace the system initially and there were different opinions on the best place to put the monitor. He is confident, however, that the camera system has helped improve safety and is a vast improvement over the rearview mirror it replaced. Van Ginneken said MSC Home Terminal has put a considerable effort into improving safety, but cautions against relying too much on hardware alone to eliminate risk. A camera system such as this, he added, is a “safety assist” feature, which means it does not of itself prevent an accident in the same way as an anti-collision sensor connected to the crane control, but rather assists the driver to make the operation safer. To get maximum benefit from a safety assist system, Van Ginneken believes, technology must be matched by good operational practice that keeps the operation simple and the risks predictable. Exception noting MSC Home Terminal has focused on reducing the number of people and activity under the crane portal and controlling the traffic flow so straddle carriers enter from one side of the STS crane only. Limiting the activity means that when the STS crane driver sees something, he takes it seriously. Orlaco sees a growing interest in using cameras to improve safety and has installed a similar system on the STS cranes at DP World’s Antwerp Gateway terminal in the Deurganckdok. ❏ Orlaco STS crane cab monitor. At MSC Home Terminal it was found that the best size is 12ins and the best location is 50-60 cms above the floor safety bar 74 May 2013
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