Collision bulkhead in ship The safety of a ship in damaged condition is majorly dependent on the strength and integrity of its watertight bulkheads. There are a lot of factors that go into deciding the position of watertight bulkheads in a ship, and designing them structurally. Watertight bulkheads are vertically designed watertight divisions/walls within the ship’s structure […]
Ship Watertight Integrity A ship is nothing more than a water tight container or storage compartment with its own means of propulsion. Its purpose is to load and carry cargo, whether the cargo is passengers, fish, or a host of other commodities. Each type of ship is specialised for the trade in which it will […]
How to test a hulls watertight integrity Methods of checking watertight integrity Watertight integrity features are built into naval ships. There must be regular inspections conducted on the ship and its watertight integrity features. The ship’s planned maintenance system (PMS) gives specific details for conducting the compartment tests and inspections. The Naval Ships’ Technical Manual, chapter 9880, section IV, […]
Oil Tankers Crude Oil Washing Crude oil washing operation onboard oil tankers involve many hazards and careful consideration will need to be made for safe planning and execution. Crude oil washing (COW) is a method of cargo tank washing wherein the oil itself is used as the solvent to speed the removal of the residues […]
Crude oil washing safety check for oil tankers Crude oil washing operation onboard oil tankers involve many hazards and careful consideration will need to be made for safe planning and execution. Crude oil washing (COW) is a method of cargo tank washing wherein the oil itself is used as the solvent to speed the removal […]
Procedure for entering an enclosed space on a ship A ship is a complex structure from inside with several small and enclosed spaces. Many of these enclosed spaces are used for installing some machinery or for storing machine parts or workshop equipment. A ship has a matrix of pipelines, which runs through each of its parts, including […]
Procedure for cleaning fuel oil tanks for ship Ships use heavy fuel oil which has a very high viscosity. When stored in fuel tanks, this oil tends to stick inside the tanks forming layers of semi-solid substance. Moreover, many impurities of the oil settle down and stick to the surface of the tanks. It is […]
Important points to consider while cleaning tanks on ships Tank cleaning is a common procedure performed on board ships. Those associated with the process are very well aware of the hazards involved and fatal accidents that have occurred in the past. In spite of all the necessary safety precautions and enclosed space entry procedures, accidents […]
Pressure testing of watertight bulkheads After installation of the bulkheads, they are to be tested for their integrity and water tightness. Since it is not feasible to fill all the cargo holds or compartments with water for this purpose, the test is done by a pressure hose. In this process, the bulkhead is subjected to […]
Watertight bulkheads construction The primary function of watertight bulkheads is to divide a ship into a number of watertight compartments. Though most watertight bulkheads are transverse in orientation, some ships also have longitudinal watertight bulkheads within a compartment for longitudinal compartmentalisation within a compartment. Other than watertightness, the transverse bulkheads also add to the transverse […]