icedcappucino

what is those 10k 40 or 5k 25 marking you see on the valves?

10K – is the pressure limit, 25 is the norminal size of the pipe. Sometimes the valve is too badly corroded to know its marking on the valve itself. A trick is to just look at the system drawing, by right all drawings will indicate the pipe norminal size.

those 15A,25A, 40A,…[Read more]

The practical side is a big learning curve for all marine engineers in their first 3 years or so.

You may or may not had experiences of assisting with overhauling/repairing certain machineries, and now you’re put in the situation of overhauling it as the main engineer in charge. That’s really daunting, we’ve all been through that befor…[Read more]

Based on actual questions:

– Introduce yourself
– Why do you want this scholarship?
– You have completed your National service in January, are you doing anything at the moment?
– Are you attached to any company now?
– What type of vessel(s) do you want to sail?
– What are your stands on time management?
– If there’s a important machines t…[Read more]

Channel: The Engineering Mindset

Electrical Engineering Basics

What are the important components to read off the fuel oil analysis chart?

Typically fuel oil analysis are required before using of the fuel oil for the engines, samples will be sent to lab for testing. examples of laboratories( Maritec or viswa lab )

Purpose for fuel oil anaylsis is to adhere to the marpol annex 6, and ensure that proper and…[Read more]

Let us discuss the differences between 2 vs 4 stroke base on understanding.

2 Stroke engines
– Power, Slow speed. Used for vessel main engine.
– Every 2 stroke of piston movement there is 1 power stroke. ( UP(compression stroke), DOWN(exhaust+ power stroke) )
– 1 exhaust valve
– suction from scavenging ports instead of suction valve.

4 Stroke…[Read more]

We often see this piston type of air reducer  onboard for control and service air. Main purpose is to reduce air bottle pressure of around 30 bar to control air, regulating it at 7 bar, or for service air 5 bar.

Maintenance normally is best done at Port if not at Sea by opening the sharing valve between the Control air line and Service air to…[Read more]

Troubleshooting 3 phase motor

Test can be done through mega tester or a multi meter. There are 2 common test that are carried out on the motor during routine maintenance or suspected motor fault.

1) Low insulation test
This is to make sure that neither of the 3 phases wiring are touching the body of the motor which will result in 440V low…[Read more]