MARINERS VOICE

Ballast water management:

Mlc2006

Solas and marpol.

Data consumption system for fuel oil on ship more than 500gt and above.
BND every bunker specified the sulphur content.
Inclusion of BALTIC SEA and North sea into ECA nox area.
Global sulphur limit. 0.5mass/mass
Energy efficiency design index.
Maintain electronic record book.
Blatic sea special area for passanger ship annx4
Passanger ship must be fitted with RRS (release and retrieve system)
All ship must have communication instruments. Designed for fire fighting team atleast 2 for each fire party.
Audible alarm device notify low level air pressure in scba .
135 letter extinguishers not required for BOILER. Which is protected with local fire fighting System.
Helicopter area must be protected with foam application system.
application code on noise level onboard ship.
Ammendment to damage stability requirements.
Damage control drills on passanger ship
Digital mobile satelite system.
Control and discharge of RESIDUALS of NOXIOUS LIQUID substance.

Basic rules of crank case Safety arrangements

Crank case and inspection door should be exhibiting strengthen construction.
Should be fitted with one or more non return relief valves in each cylinder of crank case. And these valve should be arranged as their outlets protected from flame discharge in case of explosion
Total clear area through the relif valves should not less than 9.30cm2/m3 gross crankcase volume.
If engine is not more 300mm cylinder bore with strongly constructed crankcase.
If such engine not more than 150mm cylinder bore. No needs to fitted with relief valves.
Lub oil drains pipe from the sump to drain tank must be extended to well below the working oil level in the tank.
If multiple engine installation. Drain and vent arranged so that flame of explosion can't pass from one engine to another engine.
Diaphragm must be fitted near mid length to prevent the passage of flame.if the engine having more than 6 cylinder.

Doesn't Deliver liquid

Insufficient capacity, crackling noise from the pump casing,

Doesn't develop enough discharge pressure

Speed of the pump is insufficient.
Air or gas in the liquid being pumped.
Mechanical defects such as worn in wear rings or Leak in seals , impeller damage,

Working for while and suddenly fails to deliver liquid

440v Earth fault is considered as a emergency onboard
For some ships have trips for 440v earth faults.
For 3000v and above its mandatory to to fit the trip protection against earth fault.

How to find the earth fault in 440v?

When you hear the earth fault alarm, inform the electrical officer if he is board.
Check the alarm, sometimes false alarm will rise. Test the alarm using test button,
Or if we have integrated automation system, we can check by software.
Now isolate the whole 440v system (but its not possible to isolate 440v, is because some machinery can not we isolate like steering gear & lub oil pumps.
So we can use standby options.
Keep checking on the system one by one, we will find the earth fault machinery.

HOW WILL YOU FIND THE EARTH FAULT IN 220 V?

For 220 v earth fault is not consider the major emergency onboard. But any way we have to find the faulty lighting circuit.
First of all check the alarm which is working properly or not using test button.
Then isolate the whole lighting system.check the it one by one.using breaker.
For after finding the the particular area of earth fault in 220v.
We will check the particular section one by ine circuits.
Finally we will found the earth fault .

Eart fault detected why we are isolating system?