The DPSS®Net is an easy to use tool which allows vessel crew to conduct network storm tests.
On a typical DP system a network storm should not have a detrimental effect on position keeping as there is typically redundancy in the form of dual networks.
The DPSSNet makes it quick and easy to conduct network storm tests on your DP system or other control systems. It does this by generating relevant packets of data to swamp the hardware under test. The DPSSNet is customised to meet the needs and requirements of each vessel and updates can be provided remotely.
The DPSSNet reduces the need for callouts to service engineers, reducing downtime and expense whilst being independent from the manufacturer.
If you can push a button you can use the DPSSNet!. See the video to see just how easy it is to use.
Is it hard to use?
“Network storms are a potential common mode failure capable of causing a drift off. All modern networks are fitted with protection against this type of failure. This protection must be checked periodically to confirm it is operational and that alarms to indicate that it is operating are working.”
MTS – TECHOP ODP 08 Annual trials GAP analysis
“Comprehensive tests for a network storm should be carried out during FAT and FMEA proving trials to ensure that such an event cannot fail both networks.”
MTS DP vessel design philosophy guidelines Part 2
“To this end, it will be necessary to carry out data throughput tests and network storm tests on each channel (Net A & B).”
MTS – TECHOP ODP 01
“The network functionality shall be verified in a test where at least the following items shall be verified:
…Worst-case scenarios – network storm”
DNV Offshore Standard DNV-OS-D202 Ch2. Sec 3 C501 and DNVGL-RU-SHIP Pt.4 Ch.9 January 2017
“In particular where the safety case claims that a dynamic positioning system achieves IMO Class 2 or better the duty holder for the safety case should investigate the communications architecture for the relevant DP system. If the dynamic positioning functions are dependent on a shared communication medium such as a dual data bus network, then the duty holder should ensure that appropriate measures are in place to prevent a single fault causing failure of the DP system.”
Health and Safety Executive UK - Safety notice OSD 1-2013.
Why our solution is better than others
Our unique solution allows the crew on board to conduct the testing with a cutting edge piece of hardware that is as simple as plug and play. Our solution has a one time cost and can be used many times. The alternative solutions available from Kongsberg and DNV as an example involve flying an engineer to the vessel each time a test is to be completed. The one time cost of a DPSS®Net unit is less than the cost of flying an engineer out just once!