New GL Guidelines for Complex Data Networks

MarineLink.com
Friday, July 12, 2013

Germanischer Lloyd (GL) has published new guidelines for data networks which are implemented onboard ships or offshore platforms.

As the maritime industry makes greater use of automated systems data networks have become more and more complex, while also integrating safety-critical and non-safety-critical application systems. The guidelines are available for download now on the GL website and will enter into force on August 1, 2013.

One of the main reasons for the increasing number of application systems which are connected through data networks is to minimize the total length of cabling installed throughout the vessel. Minimizing cable length not only reduces the material and installation costs for the cabling, but also avoids adding unnecessarily to the overall weight of the ship or the platform. This is especially relevant in cruise vessels, where the delivery of high quality interactive entertainment services to passengers is increasingly important.

In merchant shipping too, however, more and more vessels are equipped with integrated bridges that link information from the navigation and automation systems. Today, as well, modern automation systems are themselves complex integrated systems that comprise several monitoring sensors, control systems for the propulsion and power-generating systems and monitoring and alarm systems.

A type approval would be required for data networks which connect application systems related to classification such as: automation system, navigation system, alarm and monitoring system, general alarm and public address system, comprising all the necessary for monitoring, control and safety including in- and output devices. Non-class related application systems would include entertainment systems such as: radio, television, audio and video on demand and private internet access. The required approval would cover the entire network, including routers, switches, and process controllers connected with network cables.

In order to follow a systematic and reproducible risk-based approach for the approval process, a so-called Requirement Class is assigned to the respective data network. The scope of documents to be submitted for approval and the required function tests depend on this assignment.

There are five different Requirement Classes, differentiating the individual network according to the magnitude of the damage which would result from a potential component or system failure and its effect on the persons onboard, the environment and the technical condition of the vessel. This approach follows the same procedure as the approval process for computer systems under GL's Rules and Guidelines.

The Guidelines can be found on the GL website here: gl-group.com/infoServices/rules/pdfs/gl_vi-7-5_e.pdf.

 

Maritime Reporter November 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Keeping to the Schedule in the Pacific Northwest

When a tightly scheduled repower for the Kodiak-based trawler Sea Mac in early December took a very bad turn, Mike Fourtner used his 25 years of fishing experience

New Chinese Shipyard Launches First Ship

The new shipyard facility of Honghua Offshore Oil & Gas Equipment Company in Jiangsu, China, has launched its first ship, an IMT982 Platform Supply Vessel. The vessel,

Multraship Buys Three More Tugboats from Damen

Multraship and Damen Shipyards Group agreed on three new ASD (Azimuth Stern Drive) Tugs, all for delivery to Multraship in 2015. After delivery in Vietnam, scheduled

Offshore

DNV GL Targets Safer Approach to Subsea Lifting

The completion of a joint industry project (JIP) to improve existing standards and regulations around subsea lifting operations has resulted in a new recommended practice (RP).

Polarcus Awarded 3D Project Off West Africa

Polarcus Limited has signed a letter of intent with Perenco Oil & Gas Gabon S.A. for a 3D marine seismic acquisition project offshore West Africa.   The project,

Boskalis, VolkerWessels Win Offshore Wind Farm Work

Royal Boskalis Westminster N.V., in partnership with Volker Stevin International (VolkerWessels), has been awarded a contract by Iberdrola Renewables Offshore Deutschland

Environmental

NZ Report: Human Error to Blame for Rena Grounding

New Zealand's Transport Accident Investigation Commission (TAIC) published its final report into the grounding of containership Rena in October 2011. The TAIC’s

Costa Rica Approves APM Terminals Project

Port operator APM Terminals, a unit of Denmark's A.P. Moller-Maersk, said on Friday Costa Rica's environment agency had approved the construction of its Moin Container Terminal project.

NOAA: US to See More Floods from Sea Level Rise

Most of U.S. coast may see 30 or more days a year of floods up to 2 feet above high tides. By 2050, a majority of U.S. coastal areas are likely to be threatened

Classification Societies

Madsen to Chair Norway’s Research Council Executive Board

Henrik O. Madsen appointed chairman of the executive board of the Research Council of Norway   DNV GL president and CEO Henrik O. Madsen was appointed as chairman

DNV GL Targets Safer Approach to Subsea Lifting

The completion of a joint industry project (JIP) to improve existing standards and regulations around subsea lifting operations has resulted in a new recommended practice (RP).

LR Supports Chinese Recycling Yards' EU Application

LR’s initial verification of the Ship Recycling Facility Plans for both Zhoushan Changhong International Ship Recycling Co. Ltd. and Jiangyin Xiagang Changjiang

 
 
Maritime Security Maritime Standards Navigation Pod Propulsion Salvage Ship Electronics Ship Repair Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | 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: 0.1333 sec (7 req/sec)