RINA Issues New Dry Bulk Carrier Design Standards

Tuesday, July 26, 2011

Genoa-based classification society RINA has established rigorous design standards for the modification or newbuilding of dry bulk cargo carriers to enable them to carry fine ores safely at any moisture content. A number of recent bulker losses have been attributed to the liquefaction of wet nickel ore cargoes. Using RINA’s standards, ships should be safe even if the cargo liquefied and the vessels would no longer have to conduct unreliable moisture tests at the load port.

Paolo Salza, Head of Technical Department, RINA, says, “The mandatory application of the International Maritime Solid Bulk Cargoes (IMSBC) Code enhances the safety of bulk carriers through the setting of constructional and operative requirements. But they don’t set out details of how to carry nickel ore and other unprocessed ores, which may liquefy during transportation, safely. Essentially, the rules say vessels may load these ores if the Transportable Moisture Limit is not exceeded. That is fine, but establishing that is difficult and the TML is easily affected by recent rain or other factors. It is much safer to design or convert the ship to withstand liquefaction of the cargo. That is what our new notation permits.”

According to the IMSBC Code, Group A cargoes are those cargoes which may liquefy if shipped at moisture content in excess of their Transportable Moisture Limit (TML). RINA’s new notation IMSBC-A may be assigned to ships specially constructed or specially fitted for the carriage of Group A cargoes having actual moisture content in excess of their TML. RINA’s new notation applies to a number of cargoes which may liquefy and a full list is available.

Says Salza, “Fine ores cargoes such as nickel ore at any moisture content can be safely carried on ships specifically designed or modified to the RINA criteria. Cargo sampling and testing for the purpose of verifying moisture content is not necessary when cargo is loaded on ships complying with RINA criteria. To meet RINA’s new standards vessels may have to install additional longitudinal bulkheads in some holds. The estimated investment for converting a supramax bulk carrier is around $3 million, but the vessel retains full deadweight capability and flexibility for other trades.”

RINA is also developing a service for certifying the actual moisture content of cargoes prior to loading for those ships which are not able to meet the standards set out in the RINA notation.

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter May 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Bulk Carrier Trends

A Year is a Long Time in Tankers

The latest Gibson Market Report focused on the age profile of the VLCC fleet and the prospects for trading life beyond 15 years of age.    Analysis of the Suezmax fleet shows a similar picture,

Diana Charters Out Two Bulkers

Diana Shipping Inc. today announced that, through a separate wholly-owned subsidiary, it entered into a time charter contract with Bunge S.A., Geneva, for one of its Panamax dry bulk vessels,

Higher Capesize Demand Pushes up Baltic Index

The Baltic Exchange's main sea freight index, tracking rates for ships carrying dry bulk commodities, rose on Friday buoyed by higher demand for capesize vessels.

Naval Architecture

Tech & Design Solutions for Modern Workboats

EPA Tier 4 regulations (for engines of 804 hp and higher) and propulsion advancements have many manufacturers and vessel designers changing course to adapt to new requirements and customer demands.

Østensjø Rederi Orders Another Wind Farm Vessel

Rolls-Royce has signed a contract with shipyard Astilleros Gondan in Spain to design and equip a second Service Operation Vessel for ship owner Østensjø Rederi.

Royal Caribbean Orders 3 Ships from STX

Following the delivery of Harmony of the Seas on May 12 in Saint-Nazaire, the American group Royal Caribbean Cruises Ltd. signed an order for three additional vessels,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Naval Architecture Offshore Oil Pipelines Pod Propulsion Salvage Ship Repair Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0775 sec (13 req/sec)