MOTOR & MEP ORAL QUESTIONS & ANSWERS PART-3
Q Explain Reefer system on the ships.
Main Components of the Refrigeration plants
Any refrigeration system works with different components inline to each other in the series. The main components are:
Compressor: Reciprocating single or two stage...
MOTOR & MEP ORAL QUESTIONS & ANSWERS PART-2
MARINE FUEL CONTAMINANTS
Water
Water, especially salt water, is objectionable in diesel fuel as it may cause injector and piston groove deposits and corrode engine components.Before burning the Fuel or blends are centrifuge to remove water...
FAL FORMS AND CERTIFICATES
The Convention on the Facilitation of International
Maritime Traffic(FAL Convention) covers in its Standard 2.1 a detailed list of certificates which public officials
can ask for a ship & suggests the maximum information & number of
copies...
LUBE OIL ANALYSIS DETAILS
Regular testing of the crankcase lube oil is important to assure that deterioration has not taken place. The results of in service deterioration could be a reduction in the engine protection or actual attack...
PROPERTIES OF LUBRICATING OIL
Composition of the lubricating oils
Lubricating oil fractions extracted from crude oil are a widely varying mixture of the straight & branched chain paraffinic, napthenic aromatic hydrocarbons having boiling points ranging from about 302°C to...
INTERNATIONAL GAS CARRIER CODE (IGC CODE)
The International Code of the Construction & Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code), accepted by the resolution MSC.5(48), has been obligatory under SOLAS chapter VII since 1 July 1986. The...
THE INTERNATIONAL CODE FOR THE SAFE CARRIAGE OF GRAIN IN BULK (INTERNATIONAL GRAIN CODE)
General
The International Grain Code(International Code for the Safe Carriage of Grain in Bulk), accepted by resolution MSC.23 (59), has been compulsory under SOLAS chapter VI since 1st Jan. 1994. The term grain includes wheat,...
LUBE OIL REQUIREMENTS FOR DIESEL ENGINES
Crankcase
The oil has to serve two purposes;
Reduce frictionCool bearings
A good quality mineral oil will serve the purpose of reducing the friction to the required level depending upon the metals involved & other conditions such...
OIL DISTRIBUTION WITHIN A JOURNAL BEARING
If the maximum radial clearance is Cr
then Cr = e + Hm
where e is the eccentricity between the shaft & bearing centreline and Hm is the minimum clearance(oil film thickness)
an eccentricity factor can be...