This incident occurred while at sea when crewmembers were switching from one circulating pump of the exhaust gas boiler to the other, as part of normal operation. The connected pump fractured and released considerable amount of hot water and steam.
Incident information on Accident Caused by Fractured Exhaust Gas Boiler Circulating Pump
November 8, 2013 by Leave a Comment
How Oily Waste is Generated Onboard Vessels
November 5, 2013 by Leave a Comment
This post is an extract from EMSA’s publication “Addressing Illegal Discharges in the Marine Environment” focusing on the various ways oily waste are being produced onboard vessels. The volume of oily waste generated and/or stored on board a vessel depends on various factors. These include, for example type, age and size of vessel; type and age of equipment related to oil separation and storage; maintenance of vessel and equipment and external factors such as availability of Port Reception Facilities.
Sea Chest Corrosion With Box Cooler Arrangement
November 1, 2013 by Leave a Comment
The information contained within this post are referring a technical problem encountered in a number of fishing and offshore support vessels, which have reported sea water leakage at the top of sea chests, located in the engine room. The sea chest holds a box cooler and the leakage has been experienced at the bolt flange between the box cooler and the sea chest. As a result a number of vessels have needed to be taken into dry dock for unscheduled repairs.
Cracks in Deck Longitudinals at Connection to Deck Openings
October 25, 2013 by Leave a Comment
During a Class survey of a tanker, several cracks were found in the deck structure in the midship area, at the connection between the deck longitudinals and the deck openings (access and Butterworth hatches).
Cracks in Main Deck in Way of Hatch Corners
October 11, 2013 by Leave a Comment
During survey several fatigue cracks were found in way of the elliptic curved corner of the opening in way of cargo hatch ways on the main deck. A shedder plate had been welded to the main deck in way of the hatch opening corner. This is believed to be the most probable cause of the crack in the deck plate.
Cargo Tank Corrugated Bulkhead Damages of Double Hull Tankers
October 8, 2013 by 1 Comment
Corrugated bulkheads are generally utilised as the boundary between cargo tanks of small and medium sized product or chemical tankers. The corrugation provides benefits such as simplified cleaning which is highly desirable due to the operational profile of these vessel types. Properly designed, constructed and maintained corrugated bulkhead structures can give many years of safe and satisfactory service. On the other hand the complexity of structural configuration and difficulties of manufacture can lead to significant defects occurring which may be costly to repair. The following information is an extract from a Tanker Structure Co-operative Forum (TSCF) paper which reviews corrugated bulkhead design practice and provides details of damage experience from TSCF members.
Corrosion Under Walkways on Oil Tankers
October 4, 2013 by 2 Comments
During the main hull survey of an oil tanker, it was noted that deep spots of grooving corrosion had taken place under the walk ways, which is an almost inaccessible area, when the walkways are in place. The original plate thickness was 15 mm, but several grooved and corroded areas were found with only 5 mm of plate thickness; extending in the transverse direction of the deck.
Incident Information on Steel Coils Causing Damage to Tank Top
September 27, 2013 by Leave a Comment
A Bulk Carrier was contracted to carry an occasional cargo of steel coils between two ports. When the vessel some time later discharged the cargo, it was noted that tank top plate had been indented. Internal inspection in the double bottom, below the cargo holds, revealed that longitudinals and floors had also been damaged.
Incident Information on Burst of Starting Air Pipe Causing Subsequent Grounding
September 13, 2013 by Leave a Comment
During maneuvering, the a vessel experienced a burst starting air pipe. This resulted in non-availability of the slow speed large bore main engine which caused the subsequent grounding of the Vessel.
Incident Information on Fresh Water Tank Damage Caused by Blocked Air Pipe
September 6, 2013 by 1 Comment
This incident occured during bunkering of fresh water. A blocked air pipe caused an overpressure in the tank which led to permanent deformations of the tank.
Officer of the Watch 