Author Archives: Maria Angelin

Required Hydro-Oceanography Survey for Marine Work in CFSPP Project

Survey works for Coal Fired Steam Power Plant (CFSPP) project is one of mandatory things need to be done prior of detail design of marine work. There are some surveys needed to obtain primary data at and around the planned location consist of topographical and bathymetrycal survey, hydro-oceanography survey (tidal observation, current speed measurement, sub-bottom profilling, wave recording, sediment sampling and temperature measurement).

The topographical survey includes planned location of the power plant and its surround in order to obtained detailed map of the location, including planned location map as well as chimney location and coal fly ash influencing area. Detailed map shall be consist of land surface including land situation and height also appearance position on the planned location of the Power Plant and its surround. Bathymetric surveys are carried out in order to get the water depth map of the project area. Bathymetric and topographic map shall be integrated in one coordinate reference.

The objective of the other hydro-oceanography surveys are to obtain knowledge of general hydro-oceanography condition at the project location which will be used as parameters for further simulation and analysis.

Following are the surveys which commonly performed in Indonesia:

Brief Description of Marine works in Coal Fired Steam Power Plant (CFSPP)

No one deny that designing and constructing a Coal Fired Steam Power Plant (CFSPP) is a complex process and require collaboration among engineers from various expertise. For an example, a marine engineer will closely related to mechanical and civil engineer to be able to design the sea water intake, coal unloading jetty discharge channel, breakwater (if necessary) and navigation line. Each marine facility need specific inputs from mechanical.

There are three major marine facilities; cooling water intake, coal unloading jetty (with or without breakwater) and discharge channel.

Let’s start from sea water intake. (the following picture shows typical sea water intake for a small power plant (2×10 MW)typically cooling water intake for 2x10 MW

typically cooling water intake for 2x10 MW

Commonly, a power plant requires cooling water for its cooling system. The cooling water may be taken from the nearest source such as sea or river with minimum influence of sedimentation (both dissolved and suspended). During design process, Marine Engineer needs a several data from Mechanical Engineer as follow:

Sekilas Pembangkit Listrik Batu Bara

Tulisan menarik dari Pak Mukhlason untuk awal perkenalan dengan PLTU. Silahkan disimak.

(Mukhlason) “PROYEK pemerintah pembangunan pembangkit listrik 10.000 MW tahap pertama sudah beberapa tahun berjalan. Pada tahap pertama ini fokus pembangunannya adalah pembangkit bertenaga batu bara, dengan spesifikasi batu bara Kalimantan. Kalor jenis batu bara Kalimantan berada pada kisaran 4.000 s/d 7.000 kCal/kg, sedikit lebih rendah dibandingkan batubara asal Sumatera. Ketersediaan batu bara Kalimantan diprediksi masih bisa menyangga kebutuhan konsumsi untuk industri pembangkitan selama 100 tahun ke depan.”

Brief description of fender and fendering system (part 1)

Most of Coal Fired Steam Power Plant (CFSPP) are located along the coastal line and need its own port facilities to unloading the coal. To unload the coal, various type of coal unloading jetty have been built. No matter the type of the jetty we choose, there are something which can’t separated from the jetty structure, they are fender and bollard.

Choosing the right fenderand bollard are important to optimize the structure, safety berthing operation and to minimize the cost.

In this session, we will talk a little bit further about fender. Bollard will be discussed later on.

Ok, first of all…what is fender and why we need it installed in the jetty?

  • A fender is a bumper used to absorb the kinetic energy of a vessel berthing against a jetty, quay wall or other vessel.
  • Fenders are used to prevent damage to boats, vessels and berthing structures. To do this, fenders usually have high energy absorption and low reaction force.Fenders are typically manufactured out of rubber, foam or plastic. However, long time ago, fender are traditionally made of rope