Checking the fire systems on the vessel. What should an ETO know?

Greetings! In this article I propose to understand the issues of fire systems on a vessel, namely fire alarms and fire extinguishing methods used on a vessel. As usual, we will consider these issues from the perspective of an ETO.

What is the relationship of an electrician to ship fire systems, as well as how to check all kinds of fire extinguishing systems, we will analyze in this article. In such articles, I mainly focus on practice, so we will consider the conditions when you need to demonstrate your knowledge to the maximum when checking certain ship systems to successfully pass any inspection by any inspectors.

Blackout Test. Protections of an emergency diesel generator

Greetings! In the previous article on diesel engines, we discussed the protection of auxiliary diesel generators, which are most often tested on a ship during inspections in ports. In this article, we will consider the protections of an emergency diesel generator, as well as the procedure for testing a blackout of a ship's power plant.

At first I wanted to write that the protection of the emergency diesel generator (EDG) in ports is checked very rarely, but recently the Belgian PSC suddenly decided to check the protection of our emergency diesel. Therefore, in order to always be prepared for any checks, it is worth being aware of all the protections that this engine has.

The autotransformer was flooded with sea water. Emergency fire pump problem

Today we got low insulation of 440V on the main switchboard megohmmeter when starting the emergency fire pump. Checking the power part of the circuit showed an insulation resistance relative to the electric motor housing of 0 MOhm. Has the motor burned out or is there a chance to restore normal operation of the mechanism?

Checking the power part of the circuit (main contactor and autotransformer) with a portable megohmmeter showed 0 MOhm. Have to climb into the pump shaft and measure the insulation resistance of the electric motor at the terminal box with disconnecting of the power cable.