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JSCh

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JSCh

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'Island-maker' dredger will top Asia rankings

China Daily, June 15, 2018

China has recently started building a new cutter-suction dredger that its designer called the biggest and best of its kind in Asia.

This type of dredger is known as an "island-maker" due to such ships' major role in land reclamation.

Construction of the new vessel, which has yet to be named, began in mid-May at Huangpu Wenchong Shipbuilding Co in Guangzhou, a subsidiary of the industry giant China State Shipbuilding Corp. It is expected to take about a year, according to Zhang Xiaofeng, the ship's chief designer at the Marine Design and Research Institute in Shanghai, one of CSSC's research arms.

Zhang told China Daily in an exclusive interview that engineers and workers are building the ship's primary sections. It is scheduled to be moved into water in mid-2019.

He said the vessel will be 148 meters long, have a fullload displacement of 18,700 metric tons, and will be capable of breaking and dredging coral reef or hard rocks from 38 meters below the sea's surface.

After sand, clay, rock or crushed coral is drawn out of the waters, it can be conveyed as far as 15 kilometers away from the ship thanks to the world's most powerful and longest conveyance system. Suctioned material can be piled up to form new land.

The new ship's cutters will be stronger and more powerful than those mounted on its predecessors, enabling the vessel to deal with harder rock and more complex seabed conditions, the chief designer said.

China has been advancing so fast in the field of cutter-suction dredgers that every few months it produces anew entry at the top of the rankings of Asia's largest and most powerful "island-maker".

Before the new ship takes its place in the rankings, the crown is being held by Tiankun, which just finished its first sea trial and is set to be delivered to the user soon.

Before Tiankun, the Tianjing, a vessel codesigned by Chinese and German engineers and now deployed by China Communications Construction Co's Tianjin Dredging Co, had been Asia's No 1 dredger for more than seven years and had taken part in land reclamation operations in the South China Sea.

In addition to cutter-suction dredgers, other types of dredgers have recently been designed by the Marine Design and Research Institute such as trailing suction hopper dredgers.

Such dredgers are often used to maintain navigable waterways or to build new land, according to the institute, which is now building four trailing suction hopper dredgers.

The Ministry of Commerce and General Administration of Customs published a notice in May 2017 that no individual or entity is allowed to export large dredgers unless it is expressly permitted by the government.
#我国自主研发的新一代超大型自航绞吸船完成试航##我国疏浚行业再添神器#!“昊海龙”试航凯旋】#昊海龙试航凯旋# 4月30日,中船黄埔文冲船舶有限公司建造的7800KW超大型智能化自航绞吸挖泥船“昊海龙”结束为期3天的试航,凯旋归来。整个试航过程,船舶各项设备运转正常,总体性能指标达到设计要求。

昊海龙”是我国自主研发的全新一代超大型自航绞吸船,配置了双机双桨,双转动导管舵、全电力驱动,可无限航区调遣。“昊海龙”总长148米,型宽29米,型深9.2米,总装机功率25260KW。该船最大绞刀功率7800KW,最大挖深38米,最大排距15公里,配置了挖岩、挖粘土和挖沙等3种不同类型的绞刀,可实现五速操控的柔性钢桩台车以及重型桥架,可开挖抗压强度在50兆帕以内的中弱风化岩,是疏浚工程攻坚克难的利器之一。详情请戳:O“昊海龙”试航凯旋!(科技日报记者 龙跃梅)​

Science and Technology Daily
Today at 12:56 from Weibo

A new generation of super-large self-propelled cutter suction vessel independently researched and developed by China completed sea trial

On April 30, the 7800KW super-large intelligent self-propelled cutter suction dredger "Hao Hailong" built by CSSC Huangpu Wenchong Ship Co., Ltd. ended its three-day trial voyage and returned in triumph. Throughout the sea trial, the ship’s various equipment operated normally, and the overall performance indicators met the design requirements.

"Hao Hailong" is a new generation of super large self-propelled cutter suction vessel independently researched and developed by China. It is equipped with dual-engines, dual-propellers, dual-rotating ducted rudders, and full electric drive. "Hao Hailong" has a total length of 148 meters, width is 29 meters, height is 9.2 meters, and the total installed power is 25,260KW. The ship has a maximum reamer power of 7,800KW, a maximum digging depth of 38 meters, and a maximum row distance of 15 kilometers. It is equipped with three different types of reamers for rock, clay and sand digging. It can realize a five-speed flexible spud carrier as well as heavy-duty bridge, it can excavate the weak weathered rock with the compressive strength of within 50 MPa, which is one of the essential tools for overcoming difficulties in dredging projects. For details, please click: O "Hao Hailong" Triumphant Triumph! (Science and Technology Daily reporter Long Yuemei)

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JSCh

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Energy China @EnergyChinaNews
May 10, 2021

The first column of NGL/NRU unit in P1 section of Amur Gas Processing Plant was officially put into operation, marking that the project has the ability to produce qualified gas. Contracted by #EnergyChina‘s subsidiary CGGC, it’s one of the world's largest gas processing plants.

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Located in Amur, Russia, it is divided into three sections. Energy China is responsible for the construction of the P1 section. When fully put into operation, the project will produce 38 billion cubic meters of gas per year.
 

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