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 April 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Incat Crowther Designs Commercial Security Vessel

Incat Crowther has received a contract to design an offshore commercial oilfield security vessel for Veecraft Marine and its client, UTM Dredging Ltd, the designer announced today.

SCHOTTEL to Present Inland Offerings

SCHOTTEL will present its expertise to the U.S. inland market at the upcoming Inland Marine Expo in St Louis, June 15-17, 2015: strong push boats in Brazil, big

MHI to Shift Operations from Yokohama Kanazawa

Mitsubishi Heavy Industries, Ltd. (MHI) and Mitsubishi Hitachi Power Systems, Ltd. (MHPS) have decided on a policy to transfer operations currently performed

Offshore

Falklands' Oil Drilling at Isobel Deep Suspended

Oil explorers drilling in the waters north of the Falkland Islands have suspended work on the second well of their 2015 current six-well drilling campaign after a technical problem.

Arctic Nations to Fight Climate Change Despite Russia Tensions

The eight Arctic Council nations pledged on Friday to do more to combat climate change that is shrinking the vast frigid region, with countries trying to put

OSV Technology: Notable Designs & Deliveries

Though the market for Offshore Support Vessels (OSVs) is soft, advances in technology, fit and finish in  the sector is unrivaled in any other maritime niche over the past five years.

Environmental

IMO Calls for Environmentally Sound Ship Recycling in Bangladesh

The  International Maritime Organization (IMO) and the government of the People’s Republic of Bangladesh are jointly implementing a project entitled “Safe and

BIMCO Welcomes EU Decision on Migrants

BIMCO has stated today that it appreciates the new efforts by EU leaders to reduce increasing reliance on merchant shipping to rescue the growing numbers of

Long Beach, Los Angeles ports host forum to gather input

More than 100 cargo owners, trucking firm leaders, longshore labor, marine terminals and other goods movement industry representatives turned out Wednesday for

Classification Societies

GE Gas Turbines Earn LR Design Appraisal to Marine NVR

GE Marine’s LM6000 aeroderivative marine gas turbine PC and PG models have received Lloyd’s Register’s Design Appraisal Document to the Marine Naval Vessel Rules (NVR).

Synergi Plant gets New Dashboard

Synergi Plant version 5.2, the latest DNV GL plant integrity software solution, has now been released. It includes a brand new user interface and several new

First SCR IMO Tier III Approval in Principle Awarded

MAN Diesel & Turbo reaches IMO Tier III milestone for entire four-stroke engine portfolio. At an awards ceremony held on April 15, 2015 at the PrimeServ Academy in Shanghai,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Navigation Pipelines Port Authority Salvage Ship Repair Ship Simulators
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: 0.1319 sec (8 req/sec)