DNV – Officer of the Watch

Incident Information on Broken Rudderstock due to Corrosion Fatigue

August 16, 2013 by Officer of the Watch Leave a Comment

This incident refers to a broken rudderstock due to corrosion fatigue. While at sea, the steering failed to respond. Investigations revealed that the rudder was not ίn the position as indicated by the rudder angle indicator on the bridge and in the steering gear room. An underwater inspection was carried out and the rudder was found to have an angle of 90 degrees to port. The rudder was temporarily secured, and the vessel was subsequent!y towed to the port for close-up inspection in dry-dock and for permanent repairs.

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Filed Under: OOW FOCUS Tagged With: cathodic protection, corrosion, DNV, rudder stock, Technical

Incident Information on Contamination of Main Engine Lubrication Oil by Seawater

August 9, 2013 by Officer of the Watch Leave a Comment

This incident refers to the contamination of a ship’s main engine by seawater. The engine room bilges became flooded due to a leaking sea water pipe. Proper actions were not taken when the alarm sounded, so the leakage was first discovered when water had reached the engine room floor plates. Consequently, the leakage was stopped, bilges emptied and the ship resumed its voyage. Shortly after resuming the voyage, the main engine stopped due to low lubrication oil pressure.

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Filed Under: OOW FOCUS Tagged With: bearings, bilge systems, DNV, lubrication oil, Main Engine, oil contamination, Technical

Incident Information on Fatal Accident with Lifting Appliance

August 2, 2013 by Officer of the Watch Leave a Comment

This incident information refers to a fatal accident involving a lifting appliance. A provision crane loaded pallets onboard a vessel using a pallet fork. After landing the pallet on the vessel’s deck, the pallet fork was cleared and the crane operator moved the crane outward to pick up new load. During this operation, the crane wire broke and the pallet fork and the hook fell down and hit one of the crewmembers on the vessel. Despite the effort of the vessel’s own crew, dedicated first aid personnel and a doctor, the injured person died shortly after the accident.

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Filed Under: OOW FOCUS Tagged With: DNV, lifting appliance, pallet fork, provision crane, Safety & Quality, wires

Incident Information on Ballast Tank Explosion of Offshore Rig During Repairs

July 26, 2013 by Officer of the Watch Leave a Comment

This incident refers to a ballast tank explosion of an offshore rig during shipyard repairs. During a repair job in a pre-load tank (ballast tank) on board a rig at a repair yard, an explosion occurred in the tank. The rig was undergoing extensive repairs. During the break time, workers using gas torch inside the pre-load tank, had shut the gas torch valves and left the tank. After the break, when they went in again for continuing their job, there was an explosion in the tank as soon as they ignited the gas torch.

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Filed Under: OOW FOCUS Tagged With: ballast tank, DNV, explosion, gas torch, offshore, Offshore Platform, Rig

Incident Information on Engine Room Flooding

July 19, 2013 by Officer of the Watch Leave a Comment

This incident information refer to an engine room flooding which occurred on board a ship during preparation for cleaning of a sea water inlet filter. Cleats on the filter were released and immediately seawater flooded through the filter.

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Filed Under: OOW FOCUS Tagged With: DNV, engine room, flooding, Technical, water inlet filter

DNV OPera Offshore Power System

July 13, 2013 by Officer of the Watch Leave a Comment

Filed Under: VIDEOS Tagged With: DNV, offshore, Offshore Installation, OPera

Information on Managing Risk While Transporting Fumigated Cargo

July 12, 2013 by Officer of the Watch Leave a Comment

This incident information refers to the transportation of fumigated cargoes and how to manage risk resulting from such kind of cargoes. A bulk carrier was carrying a wheat cargo between two ports in Europe. The cargo was fumigated with phosphine gas during the voyage to protect it from insects and rodents. The gas somehow reached the crew’s cabins and a 22-year-old Latvian crew member died from exposure to the gas.

DNV’s Shipping 2020

July 7, 2013 by Officer of the Watch 1 Comment

Filed Under: VIDEOS Tagged With: DNV, DNV's Shipping 2020, fuel prices, technology costs

Incident Information on Severe Bearing Damage in the Main Engine due to Spark Erosion

July 5, 2013 by Officer of the Watch Leave a Comment

This incident information refers to bearing damage in the main engine of a tanker due to spark erosion. A tanker for oil was on a voyage in the Mediterranean Sea in loaded condition. The crew noted and monitored an abnormally high temperature in one of the main engine’s crankshaft bearings. Suddenly the lubrication oil pressure sank, the oil mist escalated in the crankcase and the engine had to be shut down immediately. The ship experienced a loss of propulsion and drifted for several hours. Finally, the cargo had to be unloaded from the vessel, which was then towed to a repair yard.

Incident Information on Cracks in Propeller Hub

June 28, 2013 by Officer of the Watch Leave a Comment

This incident refers to cracks identified in a vessel’s propeller hub. When carrying out hull renewal survey in drydock, two open cracks were found during the visual inspection of the propeller hub. The propeller was a 4 bladed mono-block fixed pitch manganese aluminium bronze propeller fitted with cone and key and with diameter: 5205 mm.