rss icon Subscribe
desktop mobile

ClassNK Publishes New Gas Carrier Guidelines

© Carabay / Adobe Stock

MarineLink

Classification society ClassNK has released its Guidelines for Liquefied Gas Carrier Structures - Independent Prismatic Tanks.

The guidelines, which are available to download for free from ClassNK's website, specify the technical requirements specifically related to the structural strength assessments of liquefied gas carriers by using direct calculation.

The two components of the guidelines include the Guidelines for Direct Strength Analysis, and the Guidelines for Fatigue Strength Assessment which are currently in development.

The Guidelines for Direct Strength Analysis specify yield strength and buckling strength by direct strength analysis using the net scantling of primary structural members as well as previously released ClassNK guidelines for the structures of other ship types. In addition, the guidelines feature specific requirements for assessment methods taking into account the complex interaction of loads between hull structures and cargo tanks independent from the hull structures. They target independent cargo tank structures and their support structures as well as hull structures.

The guidelines specify not only the design loads dominant for each structure, strength analysis methods and corrosion deductions, but also the design scenarios in which assessments are required by the International Maritime Organization (IMO) International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code), therefore covering all structural requirements for LGCs with independent prismatic tanks.

Jun 7, 2018

 

Maritime Safety

VIKING Wins Norwegian Police Patrol Boat Contract

Photo courtesy of VIKING

Global safety products manufacturer and service provider VIKING Life-Saving Equipment has won a

IAATO Votes for Whale Protection Measures

Pic: Oceanwide Expeditions

The International Association of Antarctica Tour Operators (IAATO) voted measures into effect that

London P&I clubs Widen Middle East Threat Zone

A typical fleet oiler in support of U.S. Naval operations (CREDIT: USN)

London's marine insurance market has extended the list of waters deemed high risk to include Oman

Classification Societies

SNAME Honors ABS Technical Leaders

Senior Engineer Harry Ren (Photo: ABS)

ABS Director James Bond and Senior Engineer Harry Ren have been named Fellows of the Society of

New Arc7 Class Arctic vessel Heads for Yamal LNG Facility

© kenny mcpike / MarineTraffic.com

A new ice-breaking liquefied natural gas (LNG) tanker of the Arc7 class, the Nikolay Yevgenov

LR Gets Italian RO Status

Image: Lloyd's Register

The maritime classification society Lloyd’s Register (LR) has been awarded recognized organization

Maritime Apps