LATEST SOLAS & MARPOL AMENDMENTS

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MARPOL 1) 1st  March 2018 – Data collection system for fuel oil consumption on ships. IMO documents : MARPOL Annnex 6, regulation 22, 5000GT & above. Entry in to force(EIF) under tacit acceptance procedure : 1st March...

HIGH VOLTAGE VACUUM CIRCUIT BREAKERS

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Vacuum switchgear follows the principle that it is virtually impossible for electrical current to flow in a vacuum. Therefore, the main contacts disconnected inside the vacuum bottle. The typical contact material consists of a tungsten matrix impregnated...

CIRCUIT BREAKER

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A circuit breaker is an automatic device which is designed to stop the flow of current in an electrical circuit and save the electrical circuit from damage caused by overload or short circuit. Its main...

MMD ORAL PREPARATION -1

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MEO ORAL PRESENTATION AND PREPARATION GUIDE Whatever you’re thinking, is being thought or had already been thought somewhere else. What makes the difference is in your way of presenting it.                                                                                                              -Junaid Raza Contents: 1. Things to carry 2. Outfits 4....

MOTOR STARTING METHOD

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Star Delta Starter This is means of reducing starting current of induction motor by initially connecting to the stator winding to ‘STAR’. Once the motor comes up to speed (68%) to be connected in DELTA. When motor start in ‘STAR’ it has the effect of: Reducing...

ELECTRIC PROPULSION

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An electric propulsion system for a ship is often simply described as a diesel electric or turbo electric system. It is characterised only by the type of prime mover, with no reference to the...

MAIN SWITCH BOARD

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Survey of MSB Proper cleaning to be carried internally as well as externally normally carried out when board is completely dead (all generator stopped and prime mover locked off). Inspect for dirt and dust (electro clean and vacuum...

SF6 CIRCUIT BREAKER

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A circuit breaker in which the current carrying contacts work in the sulphur hexafluoride or SF6 gas is known as an SF6 circuit breaker. SF6 has magnificent insulating property. SF6 has high electro-negativity. That means it has...

SHORE ELECTRICAL SUPPLY

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A shore supply is required so that the ships generators and their prime movers can be shut down for major overhaul during a dry dock period. Requirements/Checks There must be a suitable connection box conveniently located...

MEGGER OR MEGOHMMETER

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Megger is the most portable insulation tester. It is used to measure very high resistance of the order of Mega ohm. Types of Megger This can be separated into mainly two categories:- Electronic Type (Battery Operated) 2. Manual Type (Hand...

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