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Successful installation of CSU at Haranchi thermal coal-fired power plant

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World Coal,

The Haranchi thermal coal power plant, located in Minamisoma, Fukushima Prefecture, Japan, has recently received a 1200 t 45 m high continuous ship unloader (CSU) from Kaohsiung, Taiwan. The plant’s previous CSU was previously severly damaged in the March 2011 Tsunami.

BigLift Shipping’s Happy Buccaneer successfully transported the CSU from Kaohsiung, Taiwan, to Haramachi, Japan, and installed it at the Japanese power plant.

The project was executed in close cooperation with the engineering department of BigLift Shipping’s Japanese client IHI Transport Machinery Co. Ltd.

The CSU was loaded and discharged by Happy Buccaneer’s two 700 t Heavy Lift Mast cranes (1400 t in tandem), using two 24 m BigLift lifting beams in the lifting arrangement.

Challenges faced during this project included the high deckloads, the lifting height and required outreach of ship’s cranes necessary for the installation of the CSU.

Due to the construction of the CSU, very large forces were expected on the supports of the bucket wheel boom and the Ballast arm. Therefore, a detailed load spreading plan was made to lead the forces into Happy Buccaneer’s high-strength upper deck. During the voyage, the acceleration forces on the CSU were constantly monitored, using the OCTOPUS-On-board system, a state-of-the-art system that delivers real-time vessel monitoring and supports the vessel’s route planning, speed optimisation, heading and fuel consumption. All seafastenings were checked daily and were adjusted if and when required, thus further contributing to the safe and clean delivery of the cargo.

The vessel sailed from Kaohsiung on 12 January and arrived at Haramachi on 17 January. But due to bad weather conditions, which closed the port, the ship could not berth until 20 January. The company had the CSU successfully installed by 22 January.

During the installation of the CSU at the 2000 MW thermal coal-fired power plant, the CSU had to pass over the conveyor belt system on the berth. This operation required a lifting height of 40 m above the wharf and a crane outreach of 14.15 m from ship’s side. The shipping company reported this was not a problem for Happy Buccaneer with its 32 years of experience; it performed excellently in the project for Haramachi port.

Edited from press release by Harleigh Hobbs

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