Monday, 30 March 2015

SOME FREQ. ASKING CLASS4 QNS WITH ANSWERS COMPONENT WISE

WHAT DO YOU MEAN BY PRIMING OF PUMPS?
Ø  THE PUMP SHOULD BE FULL OF LIQUID BETWEEN SUCTION VALVE AND DESACHRGE VALVE AND ANY AIR IN THE PUMP SHOULD BE PURGED THROUGH VENTING PUMP
WHAT IS AN EDUCTOR? WHAT IS IT’S USE ONBOARD?
Ø  AN EDUCTOR IS A NON MECHANICAL PUMP WHICH CONSISTS OF WATER JETS SUPPLIED FROM SOME HIGH PRESSURED PUMP DISCHARGING INTO SUCTION CHAMBER WHICHN IS CONNECTED TO A SUCTION LINE.THE HIGH PRESSURE JET DISCHARGED FROM THE NOZZLE ENTRANCE
WHAT ARE THE CLASSES OF FIRE?
Ø  CLASS A-CARBONACEOUS MATERIALS(WOOD,PAPER,ETC)
            CLASS B -LIQUID FIRE,OIL FIRE
            CLASS C-GASEOUS FIRE,ELECTRICAL FIRE
            CLASS D-METALLIC FIRE(MAGNESIUM, POTASSIUM)
WHAT ARE THE CAUSES OF FIRE IN E/R?
Ø  FREE AIR FLAMMABLE MATERIALS ARE REDILY AVAILABLE IN THE E/R ONLY HEAT IS REQURED WHICH CAN BE GENERATED BY
        i.            ELECTRIC SPARK
      ii.            LEAKAGE OF EXHAUST GASES
    iii.            SPONTANEOUS COMBUSTION
    iv.            FRICTION(OVERHEATING OF MOVING PARTS)
      v.            RADIATIONS(VALVE,HOT PIPE)
    vi.            PORTABLE LIGHTS
  vii.            HOT WORKS SUCH AS WELDING,GRINDING,DRILLING,CUTTING,ETC(FLAMMABLE SIBSTANCES SUCH AS L.O.F.O,E/R WASTE,OIL FUMES,PAINTS ETC)






WHAT CLASSES OF FIRE MAY OCCUR IN E/R?
Ø  CLASS B AND CLASS C FIRES.
WHAT ACTION WILL YOU TAKE INCASE OF FIRE IN THE E/R?
Ø  DUTY ENGINEER,NFORM BRIDGE AND RUN TO THE FIRE STATION IF FIRE IS UNCONTROLABLE
            IF SMALL FIRE EXTINGUISH FORE WITH APPROPRIATE FIRE EXTINGUISHER
WHERE AREFIRE HOSES LOCATED IN THE E/R?
Ø  ON THE BOTTOM PLATFORM 2 NOS(ONE PORT SIDE-ONE STBD SIDE),INFIRE HOSE BOXES NEAR THE FIRE HYDRANT AND ONE ON TOP PLATFORM AS FITTED AS PER SHIP’S FIRE PLAN
WHAT IS INTERNATIONAL SHORE COUPLING?
Ø  IT IS A COUPLING THAT MATCH WITH ANY SHORE CONNECTION WHEN THE SHIP IS IN ANY PORT/DRY DOCK TO LAKE SHOR WATER SUPPLY AND CONNECT IT TO SHIOP’S FIRE LINE
WHEN EILL YOU USE CO 2 EXTINGUISHER IN E/R?
Ø  WHEN THERE IS AN ELECTRICAL FIRE IN THE E/R
WHEN DO WE USE FIXED FIRE FIGHTING APPLIANCE?
Ø  WHEN FIRE CANNOT BE PUT OFF WITH PORTABLE EXTINGUISHERS WHEN CO 2 FLOODING IS OPERATED .
WHO OPERATES FIXED FIRE FIGHTING APPLIANCE?
Ø  CHIEF ENGINEER IS SOLELY RESPONSIBLE AND IT IS HE WHO DECIDES TO USE THE CO2 FLODING SYSTEM.
WHAT DO YOU MEAN BY CO2 SYSTEM/
Ø  CO2 SYSTEM IS AFIXED FIRE FIGHTING SYSTEM USED IN CASE OF MAJOR FIRE AND IT IS MEANT TO FLOOD THE ENGINE ROOM IN ONE SHORT AFTER THE ENGINE ROOM PERSONNEL ARE OUTAND ALLTHE VENTALLATION AND OPENINGS ARE SEALED.


HOW WILL YOU FIGHT THE ELECTRICAL FIRE IN THE ENGINE ROOM?
Ø  SHUT OFF SUPPLY TO THE CIRCUIT AND FIGHT FIRE WITH PORTABLE D.C.P CO2 CYLINDER.
WHEN WILL YOU USE WATER TYPE EXTINGUISHER?
Ø  ON ‘A’ CLASS FIRE.
WHAT IS A SMOKE HELMET ? WHEN WILL YOU USE IT?
Ø  IT IS A FIRE PROOF HELMET WITH LIGHTING ARRANGEMENT AND IT IS USED TO FIGHT FIRE IN A SMOKY ATMOSPHERE.
WHEN WILL YOU USE A D.C.P EXTINGUISHER?
Ø  TO BE USED ON CLASS A, CLASS C AND ELECTRICAL FIRE.
WHAT ARE THE SOURCES OF ELECTRICITY ON BOARD?
Ø  MAIN GENERATOR, EMERGENCY GENERATOR AND BATTERY PACK.
  DEFINE CONDUCTOR?
Ø  SUBSTANCES WHICH ALLOW THE FLOW OF CURRENT THROUGH IT.
DEFINE INSULATORS?
Ø  SUBSTANCES WHICH DOES NOT ALLOW THE FLOW OF ELECTRICITY THROUGH IT. Eg- RUBBER , MICA, PAPER, WOOD ETC.
WHAT IS IMPORTANCE OF EMERGENCY GENERATOR ON BOARD AND WHERE IT IS FITTED?
Ø  IN THE EVENT OF MAIN GENERATOR FAILURE/ BLACK OUT, EMERGENCY GENERATOR CAUSES LOAD AUTOMATICALLY AND GIVES ESSENTIAL SUPPLY FOR NAVIGATIONAL EQUIPMENTS, LIGHTING. IT IS SITUATED OUTSIDE THE E/R.
STATE VARIOUS DANGERS ASSOCIATION WITH ELECTRICAL INSTALLATIONS?
Ø  SHORT CIRCUIT – DUE TO LOOSE CONNECTIONS AND OVER HEATING.               SINGLE PHASING- DUE TO OVER LOADING,IMPROPER USING, IMPROPER EARTHING,IMPROPER MCB, LOOSE CONNECTIONS.

Wednesday, 14 August 2013

INS Sindhurakshak: Navy divers enter vessel

INS Sindhurakshak: Navy divers enter vessel


           Indian navy divers have entered a stricken submarine which exploded and sank on Wednesday in Mumbai but have detected no signs of life from the 18 crewmen on board, the navy said. 

               Asked if there had been any communication with survivors, chief of naval staff DK Joshi told a press conference, "Of course not. I would have said so if we had." 
After inspecting the Western Naval Dockyard, Defense Minister AK Antony said that the accident was a 'shocking tragedy'. 
Antony also stated that the board of inquiry has been ordered. 


              Antony on Wednesday condoled the death of naval personnel on the submarine that exploded and sank in the naval dockyard in Mumbai.

          He briefed Prime Minister Manmohan Singh on the mishap before leaving for Mumbai where the incident took place.

                 "I have briefed the Prime Minister on the fire...I am just now going to Mumbai to see and get the details there," Antony told reporters outside Parliament House.

            He said he was saddened at the tragedy of this magnitude which has happened in recent times.

18 trapped after Indian submarine explodes and sinks in Mumbai




A Russian-built submarine of the Indian navy has exploded in Mumbai harbour, with 18 sailors believed to be trapped inside.
Several other crew members were reported to have escaped by jumping off the submarine when it blew up on Tuesday night, sparking a huge fire. Several injured navy personnel were being treated in a naval hospital.


DNV Helps Industry in Germany to Introduce LNG as Ship Fuel

DNV Helps Industry in Germany to Introduce LNG as Ship Fuel







DNV plays an active role in introducing LNG as ship fuel in Germany by supporting the dedication to reduce harmful emissions from ship operations.
Making technology-based decisions is complex for each individual company, as is finding the right way into the future. We fully support the overall political will and dedication to reduce harmful emissions from ship operations,said Jrg Langkabel, DNV Country Manager, on the occasion of the visit of the German Minister of Transport, Peter 
Ramsauer, to Caterpillars factory in Rostock.



DNV is helping the industry in Germany to introduce LNG as an economic and safe alternative fuel for ships. The new environmentally friendly dual-fuel Caterpillar M 46 engine is fully capable of running on LNG and meets all the Tier III requirements in gas mode.


Tuesday, 23 July 2013

Manning the world’s largest ship

Manning the world’s largest ship - with 2 captains and 2 Chief Engineers


               The first Triple-E has commenced its maiden voyage in Busan, South Korea. At the helm, the crew of the Mærsk Mc-Kinney Møller whose members have been selected among Maersk Line’s finest.

                  A selection of highly qualified crew members, specifically chosen because of their background and experience, will man the largest ship in the world. The ship can accommodate 34, and in principle run with as few as 13, but in regular service approximately 22 persons will make out the crew.

                

                         



                      Understanding of roles and responsibilities on the vessel is of utmost importance to ensure smooth sailing and safety.

                  On the Mærsk Mc-Kinney Møller, the Captains are Jes Meinertz and Niels Vestergaard Pedersen, and the Chief Engineers are Per Schilling Nielsen and Niels Peter Svarer.

              All of them were present at the naming ceremony in Korea on 14 June. ”You are among the finest in your fields, and you should be honoured by being selected to take this vessel into service,” said Maersk Line CEO in his speech on that occasion. ”May you always have fair winds and following seas.”

4 captains

Tuesday, 16 July 2013

Pirates hijack Turkish tanker with 20 Indians on board off coast of Gabon.....



Pirates hijack Turkish tanker with 20 Indians on board off coast of Gabon

 An hijack took place after 7 months.....

Pirates captured MV Cotton bearing the Maltese flag. (For representation only) 
          Pirates captured a tanker bearing the Maltese flag, but 

owned by a Turkish company off the coast of Port-Gentil, 

Gabon, media reports said on Tuesday.


             The ship - MV Cotton - reportedly had 20 crew 

members, all of them Indian.


           Reports quoted a Turkish foreign ministry official 

confirming that the incident took place on Sunday.


           As per reports, the Turkish ambassador in Gabon has 

contacted the west African country's foreign minister in 

connection with the hijack.


Read more at: http://indiatoday.intoday.in/story/pirates-hijack-turkish-tanker-mv-cotton-with-indians-on-board-off-coast-of-gabon/1/291628.html


The further information will be updated soon in other posts..........





Saturday, 6 July 2013

Cargo Ship Capsized Off Thailand. 6 still missing two days after MV Hope capsize -----chief officer and chief enginner died...

Cargo Ship Capsized Off Thailand.  6 still missing two days after MV Hope capsize 

                As many as eleven crew members of a Bangladeshi cargo ship went missing Thursday after their vessel capsized off the coast of Phuket in southern Thailand, Thai officials have confirmed according to local media.

                   The bodies of two crewmen recovered on Friday identified as chief Officer of the ship Mahbub Morshed, 45 and chief engineer Kazi Shifuddin, 52.




                 The ship, the MV Hope, was enroute to the port of Chittagong in Bangladesh when it reportedly capsized early Thursday in adverse weather conditions about 32 kilometers from Phuket’s coast, AFP reports.

                Six crewmembers were rescued by another ship and a navy helicopter, but fears were mounting for 11 still missing after a search Thursday, hampered by poor visibility, failed to locate the remaining crew. The Royal Thai navy said the missing were in a lifeboat which was set adrift by the high seas, the AFP report says.

             Bangladesh’s Dhaka Tribune reported Friday that three more were rescued alive, bringing total number of survivors to nine. The report says that three bodies have been recovered and six remain missing.

There were 17 on board the ship when it capsized.
A search continued Friday lead by the Royal Thai Navy.

The MV Hope is owned by QC Shipping of Bangladesh.

Tuesday, 18 June 2013

MV MOL Comfort Present scenario and cause analysis report by Naval Architects.......

MV MOL Comfort Present scenario(photos) and cause analysis report by Naval Architects....... 

EARLIER: MOL COMFORT SUFFERS BROKEN BACK, SINKS OFF YEMEN

26 crewmembers of an MOL containership were forced to abandon ship Monday off Yemen after the ship suffered from catastrophic hull failure and reportedly sank.


The MV MOL Comfort, an 8,000 TEU-type containership cracked in half about 200 miles from the Yemeni coast at about 12’30″N 60′E while enroute from Singapore to Jeddah with a load of 7,041 TEUs. All 26 crew – made up 11 Russians, 1 Ukrainian and 14 Filipino

The MRCC in Mumbai has just tweeted saying that the sections of MOL COMFORT are still afloat and are being monitored.


         
            According to a report by IANS News, the Indian Coast Guard in Mumbai diverted three vessels in the area to assist. The MV Yantian Express was first to arrive on scene and rescued the survivors.  The 2008-built MOL Comfort sank a short time later, the report said.

Weather at the time was strong winds and seas up to six meters.

            The ship’s operator, Mitsui O.S.K. Lines, says that an Emergency Control Headquarters has been established for the incident and MOL is taking company-wide measures to settle the matter. The MOL statement said that damage was “extensive” and that details of the incident were still being confirmed.





A Catastrophic Structural Failure
                From a naval architecture standpoint, this is a puzzling situation.  Ships are designed to handle long period and large waves that crest on the bow and stern and have a trough amidships.  This creates a sagging situation that puts extreme tension on the keel and compression at deck level.  The opposite, “hogging” situation occurs when the crest of the wave moves to the center of the ship and the trough of the waves are at bow and stern.

The repeat flexing of the ship in these perfectly timed waves is likely what caused the loss of this vessel.  In the photo above, a perfect example of hogging is shown, where the bow and the stern are both lying in the troughs of two waves.

It should not have happened however.  Ships are built to handle this situation and engineering rules are followed to ensure the transverse “section modulus” of the vessel is sufficient to handle these extreme stresses imposed by nature.  There are other possibilities however…


The loading of the containers on board may have exacerbated the situation.  Although the loading of the containers appears even in the photo, the weight distribution of the containers may not have been even.  Had heavier containers been loaded on the bow and stern and lighter ones in the center of the ship, the vessel may have been placed in a hogging situation before she even set sail.  It’s speculation of course to say one way or another, but assuming that she met class requirements, it’s one possible explanation for what happened.

Saturday, 15 June 2013

Hyundai Heavy Develops Mini Welding Robot for Shipbuilding

Hyundai Heavy Develops Mini Welding Robot for Shipbuilding 

                      Hyundai Heavy Industries (HHI), the world’s biggest shipbuilder and a leading industrial robot manufacturer, today announced the Company has developed mini welding robots for building ships. 
                  

                     The compact design of the welding machine, measuring 50 cm by 30 cm by 15cm when retracted its welding arm, can operate in confined areas inaccessible to human welders. 
                     The robot’s six joints enable the machine to carry out almost all types of welding work at a similar speed usually done by a welder. 

Moreover, a magnet on its body means the machine can be attached to steel walls or ceilings. Weighing just 15 kg, an operator can control three machines at the same time increasing productivity threefold. 

With the installation of software for steel cutting, blasting and painting, the robot can perform these other shipbuilding roles. Hyundai Heavy also plans to improve the robots to be usable for building onshore/offshore facilities and construction equipment. The mobile welding robots are scheduled to be used in building ships in Hyundai Heavy from the second half of this year. 

Hyundai Heavy, South Korea’s largest industrial robot manufacturer, also manufactures 20 models of car assembly robots, 10 models of LCD handling robots, and is in the process of developing various types of surgical robots in association with Asan Medical Center. 

Friday, 14 June 2013

Nigerian survives two days at sea, in underwater air pocket




Nigerian survives two days at sea, in underwater air pocket

Jed Chamberlain, from DCN Global diving company, describes how Harrison Okene (pictured) was rescued
A Nigerian man has survived for two-and-a-half days trapped 30m (98ft) deep in freezing seawater.
Harrison Okene, 29, was on board the tug boat Jascon-4 when it capsized in heavy swells.
It sank to the seabed, upside down, but Mr Harrison was trapped in an air pocket and able to breathe.
Graphic of the boat under water
                      Mr Harrison survived in an air pocket, 30m underwater in pitch darkness

Of the other 12 people on board, 10 bodies have already been found and Mr Harrison is assumed to be the only survivor.
Mr Harrison told Reuters journalist Joe Brock that he could hear fish eating the dead bodies of his fellow crew members.
Intense thirst
The Jascon-4 capsized on 26 May, about 32km (20 miles) off the coast of Nigeria, while it was stabilising an oil tanker at a Chevron platform.
Mr Harrison was working there as a cook, according to the ship's owners, West African Ventures.
Mr Harrison told Reuters he was in the toilet when he realised that the boat was beginning to turn over, and as the vessel sank, he managed to find his way to an area with an air pocket.
"I was there in the water in total darkness just thinking it's the end. I kept thinking the water was going to fill up the room but it did not," he said.
"I was so hungry but mostly so, so thirsty. The salt water took the skin off my tongue."
"I could perceive the dead bodies of my crew were nearby. I could smell them. The fish came in and began eating the bodies. I could hear the sound."