MARINERS VOICE

MEO CLASS 4 BOILER ALARMS AND TRIPS MMD ORAL Low water level alarm - ⏰ Alarm Low low water level alarm - ⏰ Alarm / Trip High water level alarm -  ⏰ Alarm High High water level - ⏰ Alarm / Trip Low fuel oil pressure - ⏰ Alarm Low steam pressure - ⏰ Alarm High steam pressure - ⏰ Alarm / Trip Low fuel oil temperature - ⏰ Alarm High fuel oil temperature - ⏰ Alarm Flame failure - ⏰ Alarm / Trip Burner not in starting fire position - ⏰ Alarm / Trip Low combustion Air pressure - ⏰ Alarm / Trip

 Every ship of 2000Gt and above ,and machinery space of 500m3 and above should have fixed fire fighting System. Regulation for SPRINKLER SYSTEM  It must have two sources of power supply for seawater pump and fresh water pump., And fire detection,fire alarms. In Accommodation sprinkler will come to action on 69 degree to 79 degree . Sprinkler should be corrosive resistance. Each head fixed not more than 200 SPRINKLERS. Each should covers 16 m3 area. 2m from the vertical wall and shall 4 m distance for each sprinkler. Each sprinkler capable of 100lit/min discharge @4.8 bar pressure Each section of sprinkler should have isolation valve. A gauging indication should be provided dor each section   stop valve . A test valve is provided each section near the stop valve . Paint room sprinkler shall 5lit/mint connected with fire main pump of ship. LOCATION    Fitted with no risk of fire area. Such as CO2 room, public toilet. Etc..

MEO CLASS 4 External - moham Internal - sirish FUNCTION 3 SAFETY BILGE KEEL  IT WILL REDUCE THE SHIP'S TENDENCY TO ROLL SHIP HAVE ONE MORE BILGE KEEL PER SIDES BILGE KEEL INCREASE THE HYDRODYNAMIC RESISTANCE TO ROLLING BILGE KEELS ARE PASSIVE STABILITY SYSTEM. DUCT KEEL   DUCT KEEL IS A PLATED BOX KEEL ALLOWING PASSAGE RIGHT FORWARD. IT PROVIDES ADDITIONAL BUOYANCY. TOGATHER WITH A THROUGH PASSAGE WAY FOR THE CABLES AND PIPLE LINES RUNNING IN THE FORE AND AFT DIRECTION. MARGIN LINE A LINE DRAWN AT LEAST 76 MM BELOW THE UPPER SURFACE OF THE BULKHEADS AT SIDES UT DEFINING THE HIGHEST PERMISSIBLE LOCATION ON THE SIDES OF THE VESSEL OF ANY DAMAGE WATER PLANE  IN THE FINAL CONDITION OF THE SINKAGE TRIM AND KEEL  MARGIN PLATE   WHICH IS USED TO LEAD THE FLOW OF WASTE FLUID TOWARDS THE BILGE WELLS ON EITHER SIDES OF THE SHIP. BALANCED RUDDER  ITS THE ONE WITH ABOUT 30% - 40% AREA IS FORWARD OF TURNING AXIS. STATIC STABILITY IS THE ABILITY OF THE SHIP TO REGAIN ITS...

  Flooding in engine room what will you do  Inform the bridge and C/E Rise the Engine Room alarm  Before starting the bilge pump note down the position of the ship. And time & date  Inbetween find the location of hole and repair it. Start the bilge pump  If water is too high start the another pump also. If water is too high, Protect the motors from short circuit, Reduce the engine rpm. And open emergency  bilge suction. If situation not under control. Prepare life boat for lowering.

Centrifugal Pump & Priming Centrifugal pump is a radial flow pump which works on the roto-dynamic  principle. It's a low pressure pump. The rotating component is impeller which imparts rotational energy to the liquid. Volute casing converts this energy into pressure energy. Discharge pressure is increased by fitting a diffuser . It is useful in a system where a high volume liquid flow is needed.  Unlike positive displacement pump, it is not self priming pump . To remove air from the suction pipe and allow liquid to flow into the pump a water ring primer is coupled to the pump. 

Scavenge Fire In a scavenge air space there is a normal accumulation of carbonized cylinder oil, unburnt fuel and carbon from the residual products of combustion. They will ignite under certain faulty operating conditions (such as flame blow by) indicating a fire in the enclosed scavenge air box is scavenge fire. Causes Blow past of combustion products. Overheated piston throw away heat to the under piston area. Blow back of exhaust gases. Presence of fuel oil in the scavenge spaces. Excessive cylinder lubrication.  Indications  Scavenge temperature will start increasing. Turbochargers will start surging. High exhaust temperature.  engine lose its power and reduction in engine rpm. smoke or sparks coming out from scavenge drains.  will be forming of Paint blisters on the scavenge doors. In case of Large fire -  Peeling or Blistering of paint. large reduction in engine rpm.  surging of turbocharger. Actions to be taken For small fires Start reducing the...

  FLOORS   TYPES OF FLOOR  SOLID FLOOR PLATE FLOOR  BRACKET FLOOR SOLID FLOOR Its consists of solid plate with no lighting holes. It used to subdivide the area into two different tanks .. Plate floor  Plate floors are reverse and does have lighting holes cut into the plate, so height will reduced  Its also reduce the strengthening of floor. Plate floors are used to inside the tank to give additional strength while allowing fuel stored in the tank freely flow back and forth. BRACKET FLOOR A bracket floor lighter than all floors 

HATCH COVERS Cargo holds are fitted with hatch cover to avoid the cargo contact with outside atmosphere  To avoid cargo getting wet To avoid ingress of water in cargo hold which will danger to stability. Its usually provided one hatch per hold if ship having large hold, two hatches per hold MAINTANCE OF CARGO HOLD Check the packing examine hatch beam for corrosion  examine for wire and rollers examine for broken or missing gaskets  examine for all moving parts  TESTING OF HATCH COVERS HOSE WATER TEST ULTRASONIC TEST CHALK TEST

  Lifebuoy Location of lifebuoy:   To find the location of life by in your ship's fire control safety plan Both side of ship all open decks One should be placed in Stern Requirements : not less than one half of total number of lifebuoy shall be provided with the self ignition light Not less than 2  shall be provided with the self activating smoke signal Inner Diameter should not less than 400 millimetre Outer diameter Should more than 800 millimetre Total weight not less than 2.5 kilogram Not more than 6 kilogram Inherently binding material Internationally Orange in colour Accessories Retro reflective tapes   Grab line  Diameter not less than 9.5 millimetre, length not less than 4 times of outer diameter of the body. Self ignition light White in colour Luminous intensity to be not less than 2 cd And maximum flash 70 minute Battery 2 hours working Buoyancy life line Diameter not be less than 8 millimetre Breaking strength not less than 5 kilo Newton Self ignition...

 Co2 BOTTLE REGULATION   Ship of 200gt and above and machinery space of 500m3 and above should have fixed fire fighting System. 85% of co2 will release within 2 mint (REASON- THE RAPID INJECTION OF CO2 IS NECESSARY TO COMPACT AN ENGINE ROOM FIRE, WHICH HAS ATTENDED TO SUCH MAGNITUDE THAT SPACE TO EVACUATED.) co2 bottle  kept in the temp of below 55°C. Co2 bottle normal pressure 53bar it will differ by temperature. Without sypton tube will ensure that fully discharge of co2. (Without sypton tube low discharge and bottle will freeze because of lantern heat . Busting disk will rupture 177 bar @ temperature of 63°C . Once co2 will release in a space oxygen percentage will reduce below 15%. Co2 bottle checked by isotropic gun for weighting. CO2 ROOM REGULATION  Co2 room should not used for other purposes. Co2 room should be in one deck below the open deck . Stairway or lader should be provided. Co2 room door should be open  outward. Mechanical ventilation should be p...

  Saturday routine works onboard  Check fire detection and fore alarm Check Co2 bottle and system Check General alarm system. Check emergency batteries Check funnel flaps. Check lighting Check life boat engine. Check emergency fire pump. Check emergency compressor. Check steering gear. Check oily water separator 15 ppm indicator. Emergency remote ( Engine room blower, quick closing valves, air-conditioning blower Check air and foam equipment.

BUNKER DELIVERY NOTE (BND) Which contains the information of fuel oil Delivery. 3 years kept in ship. 4 sample should be collected  and  sealed and should get signed by the supplier. Four samples for  Lab. Marpol Ship. Supplier ENTRIES OF BUNKER DELIVERY NOTE Vessel name  Imo number Name of the port  Name of the barge  Position of vessel Gross tonnage of the vessel. Density of fuel. Quantity of fuel bunker. Products name or grade. Date of delivery. Tine of start and stop. Viscosity of fuel. Sulphur content in the fuel. Flash point of fuel. Pour point of fuel.

  Steering gear safeties Hydraulic safeties Level switch (low , low low level alarm for tank Manual bypass valve Low pressure valve High lub oil temperature cutout Electrical safeties Electrical or mechanical stopper for rudder Electrical motor over load alarm Power failure alarm High temperature alarm  Self starting after power failure Short circuit trip Phase failure alarm 200% insulation

SOLAS TRAINING MANUAL   AS PER SOLAS 3 - LIFE SAVING APPLIANCES ENT  &  ARRANGEMENT it contain   SOLAS Requirement personal life saving equipment  muster list and emergency instructions life boats and rescue boats survival equipment exposure hazards use of survival craft methods of retrieval  emergency repair of life saving appliances safety equipment inventory

  Marine labour convention Minimum age to work in onboard- sixteen(16), under eighteen (18) will not allow to work on night watch Safe employment agreement Rest hours Payment of wages Paid anual leave Repatriation at end of the contract Onboard medical care  Proper accommodation and food Health and safety protection. Rest hours Minimum rest hours not exceed than  14 hours in any 24 hours  72 hours in any 7 days  Maximum rest hours shall not less than 10 hours in any 24 hours  77 hours in any 7 days 

TESTING OF CRANK CASE RELIEF VALVE After engine is stopped, Remove the flame trap after that  press up the valve disc and check the the action of opening and closing movement the valve should be opened smartly, and closed positively and rapidly. the valve must be oil and gas tight when engine is running we must only check the oil leakage it will indicate the valve is sealed or not.

  FREE SURFACE EFFECT Definition of free surface effect?     When a tank or compartment partially filled with liquid, when a ship is inclined. liquid will moves along with ship's inclined  direction. which will reduce the stability of the ship. How to reduce free surface effect : Swash bulkheads  Pocketing Surface permeability Sluice valves  Swash bulkheads This types of bulkheads give some additional strength, Which are longitudinal  bulkheads which will restrict the flow of liquid when ship is  inclined   Pocketing  fill the tank fully which will reduce the free surface effect Surface permeability The object such as machineries, engine and piping systems prevent the moving water  shifting of wedge, these reducing the free surface effect. Sluice valves  The large slack tanks are cross connected with sluice valves, it will reduce  the flow of the liquid so that it will reduce free surface effect.

  Safety measures enhance to maritime security ISPS code Objectives of Ism code :  To discover the security threats and take preventive action against the security threats. And proper preventive measures are placed  Early and efficiently collecting the security level information, and share  the security information. Three levels of ism code  Level 1:  Minimum appropriate preventive security measures for all the time. Level 2:  Additional protective preventive security measures for period of time. Level 3:   Level 3 is High level protective preventive security measures for limited time. Level 1:  Deck over lightings. Crew photo identification  Visitors should be identified Regular patrolling will carried out. rooms which is not in use should be closed and locked by key. Certain area should be closed and locked by key Level 2   In additional to level 1 Oscillation search will carried out. Shore Delivery should be checked properly...

Why single stage compression is not in use? For high pressure reciprocating air compressors are used. Even in reciprocating compressors, a compression ratio of 1:7 is common (more than this the air is getting compressed becomes very hot and will reduce the overall efficiency) . Hence, compression is done in a two stage with inter/after cooling arrangements.  

  Uses of Compressed air onboard ships For automation and control of main and auxiliary machinery and equipment. For starting of Main engines, auxiliary engines, emergency generator engine etc., For pressurizing the hydrophores for domestic fresh water and sanitary water used in accommodation. For use in sewage plant for conducting aerobic sewage breakdowns. For soot blowing of the boilers. For use in fog horns and ships whistles. For heaving the life boat up by the use of an air motor. Used in pneumatic pumps for oil transfer and pneumatically driven hand tools such as grinder/ chisels/ drills/ spanners/ jacks/ etc., For use as general service air for use in general cleaning & painting operations. Generally two pressures of air are used:  High pressure air - 30 bar (Used for starting the main/auxiliary engines) Low pressure air - 7 bar (Used for control and service air)