Strength of Double Hull Afra-Max Tanker

A Bayesian Network Model for Accidental Oil Outflow in Double Hull Oil Product Tanker Collisions

This paper proposes a Bayesian belief network (BBN) model for the estimation of accidental oil outflow in a ship-ship collision where a product tanker is struck. The intended application area for this model is maritime traffic risk assessment, i.e. in a setting in which the uncertainty regarding the specific vessel characteristics is high. The BBN combines a model for linking relevant variables...

Effects of Common Structural Rules on hull-girder reliability of an Aframax oil tanker

This paper aims at quantifying the changes in notional reliability levels that result from redesigning an existing Aframax tanker to comply with the Common Structural Rules (CSR) for double-hull oil tankers. The probability of structural failure is calculated using the first-order reliability method. The evaluation of the wave-induced load effects that occur during long-term operation of the sh...

Margins of safety in FPSO hull strength

Recent studies were carried out to determine the variation in safety factors (between the applied loading and the capacity) of FPSOs currently operating in the UK Sector of the Central North Sea, and designed using either a class rule type approach or a more advanced hydrodynamic – FE type approach. Results from these studies seem to indicate that the safety factor in both cases is similar, sin...

Immunogenicity of Four Doses of Double-Strength Intramuscular Hepatitis B

Background: Hepatitis B virus potentially accelerates graft rejection and mortality in renal transplantation population. Vaccination of graft candidates without prior immunization against HBV seems essential before transplantation but some candidates of transplantation have not received HBV vaccine at the time of receiving graft. We aimed to evaluate immunogenicity of ...

Strength analysis of seamless double layered fabric using FEM