Hey! we are going to start the topics, Please follow this site to get further notification of new post. Welding Engineer Fundamental: The very first step to becoming a welding engineer that to understand how the Welding operation, terminology, set-up, … Continue reading Welding Engineer & Welding Metallurgy Fundamental
We are starting to post key NDT article. Follow our website to receive notices on NDT knowledge. VT method: AWS CWI Questions and Answers (Module 1) AWS CWI Questions and Answers (Module 2) AWS CWI Questions and Answers (Module … Continue reading Non-Destructive Testing Fundamental (VT, PT, MT, UT, RT)
IMO SHIP IDENTIFICATION NUMBER SCHEME (Circular letter No.1886/Rev.5) The IMO ship identification number scheme was introduced in 1987 through the adoption of resolution A.600(15), as a measure aimed at enhancing “maritime safety, and pollution prevention and to facilitate the prevention of maritime fraud”. It aimed at assigning a permanent number to each ship for identification purposes. That number would remain unchanged upon transfer of the ship to other flags (s) and would be inserted in the ship’s certificates. When made mandatory, through SOLAS regulation XI/3 (adopted in 1994), specific criteria of passenger ships of 100 gross tonnages and upwards and … Continue reading IMO NUMBER & NET TONNAGE MARKS PLAN
Damage stability calculations Calculations of the stability of damaged ship are complicated and tedious. At present, two different analysis concepts are applied: the deterministic concept and the probabilistic concept. For both concepts, the damage stability calculation shall be made according to the method of lost buoyancy. Unfortunately, the collision resistance is not considered when assessing damage stability and vessels with strengthened side structures are treated in the same way as single-hulled ships. The damage stability legislation is contained in the following Conventions or related mandatory Codes. – Deterministic concept – This method is based on damage assumptions such as damage length, transverse … Continue reading Damage stability calculations (Sample)
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Docking Plans: A docking plan is a document that is prepared for every ship during its preliminary design phase. All the information required to bring a ship to a dry dock is included in its docking plan. While most of the information is condensed into drawings, one must also refer to the textual references and notes provided, because they also inform us about the type of dry dock that is being used and technical specifications of dry dock that should be met before the ship is docked. Visit: Shipbuilding Knowledge A-Z for more understanding shipbuilding. The contents of a typical docking plan are … Continue reading SHIP DOCKING PLAN
Capacity Plan A plan of the spaces available for cargo, fuel, freshwater, water ballast, etc, and containing cubic or weight capacity lists for such spaces and a scale showing deadweight capacities at varying draughts and displacements. Visit: Shipbuilding Knowledge A-Z for more understanding on shipbuilding DWT Scale This scale also shows the moment to change trim 1 cm and the TPC for each draught; a diagram with measurements of winter, summer, tropical and freshwater load-line with a diagram of the position of the deck line; this is usually placed alongside the deadweight and displacement scale so that the deadweight or displacement … Continue reading SHIP CAPACITY PLAN & DEADWEIGHT SCALE
In O&G EPCI projects, both Dia-Inch & Inch-Meter are generally considered as units for measurement of the piping job loads (mainly for Welding/ Installation/ Hydro Test measurements). The former being denoted by the DI of (phi) ” or ” and Inch-metre by IM respectively; can be understood as below: Consider a 10″ NB pipe of length says 30 metres. If there are 5 joints of this pipe to be welded, the quantum of this welding job is calculated as: DI = *Pipe Dia (in inches ~ 10) x No. of joints (~5) = 50 Dia-Inch *Notes: The joint included of Flanges, … Continue reading DIA-INCH & INCH-METRE IN PIPING
SMA: Shield Metal Arc Welding (SMAW) SMAW is the most widely used welding process for metal fabrication because of its low cost, flexibility, portability, and versatility. The welding machine itself can be as simple as a 110-volt, step-down transformer that can be plugged into a normal electrical outlet. The electrodes are available from a large number of manufacturers in packages ranging from 1 lb (0.5 kg) to 50 lb (22 kg). The SMAW process is very versatile because the same SMA welding machine can be used to make a wide variety of weld joint designs in a wide variety of metal … Continue reading What are the advantages of SMA welding?
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