Tanjung Jati
5&6 Jetty

Project: Tanjung Jati Unit 5&6 Jetty
Location: Jepara, Central Java
Client: Mitsui Engineering & Shipbuilding
Contract Period: August 2017 – June 2019

Contract sum: EUR 30 million
Scope of Works:
Design & Construct – Jetty

A contract to extend the Tanjung Jati B Power Station units 5 and 6, located near Jepara, Central Java, Indonesia. Decorient extended the existing power station with a 1,750-metre access trestle and a wharf of 330×27 metres for 80,000-DWT coal vessels. Decorient completed the project in 23 months for Mitsui Engineering & Shipbuilding (MES).

The works included the driving of steel piles, the production and installation of prefab concrete elements, including the installation of rubber fenders, access ladders, catwalks and bollards.

The approach trestle is a concrete deck structure made up of prefabricated reinforced concrete double T-beams, resting on concrete headstocks which are founded on steel tubular piles.

The Wharf is a concrete deck structure supported by vertical and rake steel piles. The deck is divided in three sections with shear keys in between. The wharf detailing consists of precast beams in two directions on which precast deck slabs are placed. An in-situ concrete topping is later installed to form a monolithic concrete deck. On top of the deck crane rails are mounted to support the ship unloaders. 

This was the second design and construct project for Decorient at the Tanjung Jati B Power Station; in 1998 Decorient completed – four months ahead of schedule – units 1 and 2, comprising a 1,370-metre-long coal unloading jetty and a 300-metre-long limestone unloading jetty.