PSC, Class, Flag. Passing inspections without problems for an ETO

Greetings! I present to your attention the final article on inspections of systems and mechanisms on a vessel, in which the ship's ETO is involved in one way or another.

In this article I will try to collect the most important points that an electrician needs to know to successfully pass any inspection (PSC, Class, Flag). Here I will collect general recommendations that will be useful for electricians and engineers of different types of ships, but of course there are some nuances that I may not know about, so if you have something to share, then write in the comments to the article.

Diesel Generator Protections. A Quick Check for an Inspector

Greetings! In this article, I recommend that you familiarize yourself with the main protections of diesel generators on a ship, which inspectors like to check. There are many protections on ship diesel generators and one article is not enough to consider them all, so only the main protections will be described, which are most often demonstrated when passing a particular check.

Using the example of the Daihatsu 6DE-18 diesel engine and the Taiyo FE 647A-8 brushless synchronous generator, we will consider the protection of marine diesel generators and how to test them. Other most common diesel engines (Himsen, Yanmar, MAN B&W) found in the merchant marine fleet will also be partially covered.

Checking protections of the main air compressors

Greetings! I continue to write articles on checking the protection of various mechanisms on a ship and this time we will consider the compressors of the starting air of the main engine. Usually, they are of no interest to inspectors, but there are exceptions.

In this article, we will consider the main protections of the main air compressors that directly concern electricians. Let's take Japanese TANABE compressors as an example.

ACB Trouble. The generator does not connect to the main busbars. Troubleshooting

Greetings! In this article will discuss one of the problems with diesel generators, which is possible and rare, but happens on ships. In general, any problem with generators for an ETO is a sore and most discussed topic.

Also here we will briefly examine the conditions for synchronizing ship synchronous generators (alternators).

Automatic Control System (Power Management System) of Electrical Power Plants

Automatic Control System for Ships Electrical Power Plants. The automatic control system is designed for controlling turbo- and diesel-driven electric generating plant, predominently onboard ships.

The purpose of the automatic control equipment is to ensure that the power demand of a ship is generated in an economical manner and also to ensure that any faults occurring will not cause damage to the machinery.

During fully automatic operation the equipment carries out starting, synchronizing and load sharing on one or several diesel alternators as the power demand increases, as well as disconnecting and stopping the diesel alternator in the event of excessive power being available.

Power Plant Control System Operation of Central Unit

Adjustable level detectors determine at which busbar load a generator shall start or stop. According to the starting sequence, selected with push-buttons at the front, start and stop orders are distributed to the basic units.

These orders are delayed one minute in order to prevent actions by temporary load variations. The delay will be bypassed when a fault occurs on a running set, overload is detected or a controlled load is required.

The unit also determines whether or not the number of connected sets is sufficient to cover the required load under normal conditions. In this case a signal to the units will permit a set with a non-critical fault to be disconnected and stopped. This signal will also permit a requested controlled load to be connected.