LATEST SOLAS & MARPOL AMENDMENTS
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
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
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
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
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
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
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
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
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
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...