Damir Zec

Ballast water sediment elemental analysis.

Sediment samples from the ballast water tanks of ships calling at the port of Rijeka in the Northern Adriatic were analysed using X-ray photoelectron spectroscopy (XPS) and secondary ion mass spectroscopy (SIMS) using caesium, argon and oxygen ion beams. The research was carried out in order to determine the sediment composition and relative abundance of the dominant elements. The results indicate that the sediment samples mostly consisted of compounds that originated from the deterioration of tank plates, tank coating residues and ballast operations such as clay, silt, sand and organic materials. No significant heavy metals or highly toxic elements were found. The research revealed some advantages and significant drawbacks of using XPS and SIMS for the routine analysis of sediment composition as a decision supporting tool for ballast water and sediment management.

Impact of the Formal Safety Assessment on Shipboard Operations

The paper presents, in broad outlines, the concept of theFormal Safety Assessment, a newly proposed official methodologyfor the rule-making process in IMO. It examines possiblepotentials and drawbacks of the proposed methodology and attemptsto identify the most important long-term consequencesof its application in the international shipping and shipboardoperations.