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

Marine Propulsion

First N.American Boat Powered by Volvo Penta IPS

Thomas Paine, the new 50-ft. aluminum patrol boat that joined the Massachusetts Environmental Police fleet in July, is the first commercial vessel in North America

WR Launches On-stack Scrubber Emission Monitor

WR Systems (WR), the U.S.-based maritime technology company, is launching a new variant of its laser-based-emissions monitor at the SMM 2014 Fair in Hamburg. Called the Emsys-iS,

CMR Debuts Engine Supervision and Management Software

CMR Group has introduced a new Integrated Alarm Monitoring and Control System (IAMCS) for marine and naval engine applications which it said provides technologically-advanced

Offshore

ABS to Class First Self-elevating Unit Built in Qatar

ABS, a provider of classification services to the global offshore industry, was selected by Nakilat-Keppel Offshore & Marine (N-KOM) to class its LB310S liftboat,

Industry Partnership to Enhance BOP Maintenance

The maintenance of blowout preventers (BOPs) has significant financial, logistical and safety implications for drilling operators and rig owners. DNV GL has now

Transnet National Ports Authority Orders 9 Voith Water Tractors

In South Africa’s largest local shipbuilding contract Transnet National Ports Authority has ordered nine new Voith Water Tractors (VWT) for use in several ports across the country.

Environmental

WR Launches On-stack Scrubber Emission Monitor

WR Systems (WR), the U.S.-based maritime technology company, is launching a new variant of its laser-based-emissions monitor at the SMM 2014 Fair in Hamburg. Called the Emsys-iS,

Legislation Signed for Ports Upgrades

Today, Governor Brown signed AB 2395 Legislation. The bill was co-authored by Bonnie Lowenthal chair of the Assembly Transportation Committee and the Select Committee

Northern Sea Route Opens Earlier than Last Year

Northern Sea Route (NSR) eastern passage opens two weeks earlier than last year; Global Ice Center predicts NSR to remain open for six weeks The Global Ice Center at Weathernews Inc.

Classification Societies

SBI Offshore Negotiating Contract for Rig Builds

SBI Offshore Limited has announced that the Middle East-Chinese consortium, which recently awarded its subsidiary a contract to provide design and engineering services for a jack-up drilling rig,

ABS to Class First Self-elevating Unit Built in Qatar

ABS, a provider of classification services to the global offshore industry, was selected by Nakilat-Keppel Offshore & Marine (N-KOM) to class its LB310S liftboat,

Industry Partnership to Enhance BOP Maintenance

The maintenance of blowout preventers (BOPs) has significant financial, logistical and safety implications for drilling operators and rig owners. DNV GL has now

 
 
Maritime Careers / Shipboard Positions Maritime Security Naval Architecture Navigation Pipelines Port Authority Ship Electronics 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: 0.1235 sec (8 req/sec)