Marine Engineering

1. Ensure that the main and auxiliary machinery is in working condition. If any machinery was opened up for overhaul, it has been boxed up and tried out for satisfactory operation. Ensure fuel oil settling and service tanks are full.  Main air receiver is pressed up and drained of water. Start and take on load second generator.  Start all the pumps required for main engine and check for correct pressure and flow as required. Start lub.oil purifier if not already running. 2. Following Controls have to be tested (a) Steering gear to be tried out with both motors individually, movement of the hydraulic rams & rudder stock is smooth and not jerky (jerky movement indicates air in the system), there is no leakage of oil from telemotor receiver or the rams, any greasing points have been greased, helm indicators on bridge and in steering compartment are showing same degree of helm, and the communication between bridge/ steering compartment/engine room is in order. ...

Anti-fouling Coatings Traditional antifouling type known as CDP (Controlled Depletion Polymer) is high rosin based that dissolves slowly in seawater. The useful lifetime of CDP paints is usually limited to 36 months. This can be extended by regular underwater scrubbing to remove the leached layer and rejuvenate the paint film but the effectiveness of such cleaning may be limited with respect to time. Two main high-performance polymer-based tin-free SPC (Self Polishing Co-polymers) technologies in current use are namely metal acrylate co-polymers and silyl acrylate co-polymers. The performance of certain current copper acrylate SPC products are understood to be at least equivalent to TBT-SPC products (TBT-SPC products are banned) that were in use prior to 2003.  While the above mentioned two types of antifouling coatings have biocides release properties, it can only be expected that the trend for increasing legislation in this area will eventually lead to removal ...

Below Procedure will come very handy for seafarers which have to deposits any particular fees for anything related to MMD's in India. As MMD's is going for all online transaction to ease up the process. And it might save your 100-200 Rupees which you will pay to the shops outside of MMD's if you dont know these things for on-line payment. If i got anything wrong, feel free to connect us at  https://meoexamz.com  and plz share this post as it might be useful for others also. Follow below steps for on-line transaction : 1. Open the NTRP site by: https://bharatkosh.gov.in/ 2. Choose Non-Registered Users.Also, you can register by Login, by creating ID and Password. 3. Select Depositors category as Individual or Autonomous body or PSU or Ministry, Department etc for Seafarers select Individual . 4. Click on Search button on  Purpose , in ministry select  Shipping  and Search. 5. Select Payment to your concerned M...

1.Any IC engine of cylinder diameter of 200 mm or a crankcase volume of 0.6 m3 and above shall be provide with crankcase relief valve of a suitable type with sufficient relief area. 2.In large engine, cylinder diameter more than 300mm, require one relief valve to be placed on each crankcase door. 3.In small engine, cylinder diameter not more than 300mm, crankcase door of which are usually very strong. It may have relief valve or valves at its end. 4.Its free area should not be smaller than 45cm2 and there shall be minimum of 115cm2 /m3 of the gross crankcase volume. 5.Spring setting for opening pressure is 0.07 bar at an internal pressure and will close when the pressure has been relieved. 6.The valves should open smartly and close positively and rapidly. 7. The relief valves shall be arranged or provided with means to ensure that discharge from them is so directed as to minimize the possibility of injury to personnel.

The incoming refrigerant temperature is low and chances of emerging hot spots is low. Crankcase forms the suction chamber of the compressor and chances exist that the compressor may draw in air and moisture. There is no O 2  available inside the crankcase of reefer plant which can lead to explosion.