MARINE INDUSTRY FOCUS
In a time of significant change for the UK’s marine and subsea industry, Dana UK’s
ongoing investment in the Brevini name is enabling it to support customers with the specification and selection of products and solutions across the
marine sector. Here the company looks into one of its latest projects, a submarine rescue system
Rescuing submariners in distress
F
or many years, marine applications have benefitted from technology
provided by Dana UK (through the Brevini brand). Within the sector, planetary gearboxes, winches, hydraulic motors and valves have been supplied for use in applications ranging from Launch and Recovery Systems (LARS) to cranes. In fact technology from the Brevini brand has been used in many prestigious marine projects: gearboxes to drive the
The Submarine Rescue System features a Launch and Recovery System (LARS) from Caley Ocean Systems
vessel and also houses port, central and starboard diver decompression chambers. Given the difficult environment and the circumstances in which the Rescue System will be deployed, reliability and capability were essential requirements of the products selected. For the LARS main winch, and working in close collaboration with Caley’s team, Dana’s integrated approach enabled the optimum gearing and number of drives to be selected for the system.
MEETING THE CHALLENGE The Caley LARS winch uses an internally geared slewing bearing (supplied by Dana from partner company, La Leonessa) driven by four industrial series planetary
“Given the difficult environment and the circumstances in which the Rescue System will be deployed, reliability and capability were essential requirements of the products selected”
tidal barrier that helps to protect Hull from flooding; complete drive packages for the linkspan refurbishment and upgrade for the Woolwich Ferry; and even gearboxes for the sluice gates of the Panama Canal extension. Engineers at the company have worked
with Caley Ocean Systems on a range of marine and subsea contracts. Under the latest project, Dana specified and supplied gearboxes and slew bearings as part of an innovative Submarine Rescue System, the first of which has recently been delivered by Caley and JFD to the Indian Navy. This new 3rd Generation Submarine Rescue System has been certified to operate in Sea State 6 – some of the harshest sea conditions. It features a LARS from Caley as part of a system designed for the fast rescue of submariners in distress, and is capable of being mobilised in less than 24 hours. This LARS ties the rescue module to the
gearboxes from the Dana Brevini Motion Systems range. To meet the system’s certification requirements, Dana supplied gearing calculations as part of the project, as well as material certificates. Commenting on the application, Richard Haskey, business development manager for Mobile & Marine applications at Dana Inc., said: “There are an awful lot of variables that you can adjust on the
Compact dimensions are often a specific requirement in the marine sector and so at Subsea Expo in Aberdeen in February, Dana featured its HPV 310 proportional directional valve, ideal for a range of marine applications. Part of the Dana Brevini Motion Systems’ HPV range, the HPV 310 features load-independent flow control; a maximum inlet flow up to 600l/min; a compact and flexible design; open and closed loop control; and excellent flow control and low hysteresis. Pressure- compensated and load-sensing, this valve is the ideal solution for cranes and winches where precise control and compact dimensions are equally critical.
loading of this winch: you have different levels of torque on operation and brake, but you can also adjust the teeth on both slew and pinions… The challenge is that one will impact on another so it’s far better if you can go to a single manufacturer who can take responsibility for the whole thing. In the case of this Launch and Rescue System, having one company who can supply the slewing bearings as well as the gearboxes saves time, reduces risk and makes everything easier – both for supply and for ongoing maintenance and servicing.”
DNV APPROVAL The planetary gearboxes and winches have DNV type approval. DNV GL sets standards for ships and offshore structures – Class Rules that comprise safety, reliability and environmental requirements that vessels and offshore mobile structures in international waters must comply with. To obtain DNV approval, manufacturers go through rigorous verification, demonstrating suitable facilities for manufacturing, testing and inspection; with qualified personnel undertaking the manufacturing processes, and the constant monitoring of product quality. Meeting the demands of the marine sector, the planetary gearboxes and winches (four per winch in the Caley LARS) offer high torque capacities in compact dimensions, as well as good radial load ratings for supporting the pinion on the shaft. In a time of significant change for the UK’s marine and subsea industry, Dana’s ongoing investment in, and growth of, the Brevini name enable its experienced engineers to continue supporting customers with the specification and selection of products and solutions across the marine sector.
Dana UK
www.brevini.co.uk DESIGN SOLUTIONS | MAY 2018 15
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