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Gas detector for Swedish hovercraft

29 Jun 2011
The hovercraft under construction for the Swedish Coastguard at Griffon Hoverwork’s facility in Southampton.

The hovercraft under construction for the Swedish Coastguard at Griffon Hoverwork’s facility in Southampton.

The Swedish Coastguard service has selected a Crowcon gas detector for one of its newly constructed hovercraft.

The flameproof (Exd) infra-red Nimbus fixed gas detector and Gasmaster control panel were installed on the craft by Griffon Hoverwork of Southampton.

The hovercraft will carry two Ski-Doo snowmobiles in the cargo bay, which will be used for emergency rescue services during the winter months. Because of the danger of petrol vapour leaking from the snowmobiles, it was necessary for the cargo bay to be fitted with a reliable hydrocarbon gas detector and control panel. As the cargo bay is usually closed, these vapours could reach concentrations hazardous to human health.

The Swedish Transport Authority has other Crowcon gas detectors in its coastguard fleet, including ships, so when it came to commissioning a new hovercraft from Griffon Hoverwork, it expressly requested that Crowcon detectors should be installed.

“We are delighted that the Swedish Coastguard has decided to install one of our units in their new hovercraft, said Crowcon fixed systems product manager Andy Avenell. “They already use many of our gas detection systems in their existing fleet and it is testament to the quality and reliability of our equipment that they keep coming back to us for more units.”

If the Nimbus detector registers dangerous levels of petrol vapour, ventilation and alarm systems are automatically triggered by the Gasmaster control panel. In addition to this, a local external status light which shows, at a glance, if the unit is in normal function or in fault.

The rugged detector is designed to operate in the dirtiest, harshest conditions. The optics will operate up to 90% obscuration, and at 75% obscuration a ‘dirty optics’ warning appears on the Gasmaster control panel, informing operators that the optics need cleaning. The Nimbus is extremely simple to use, even in inaccessible areas. A duct mounting plate is available, incorporating a remote gassing port, which allows calibration checking without requiring entry into the duct. 

Commenting on the Crowcon units, Owen Poole of Griffon Hoverwork said, “We would definitely recommend Crowcon to other marine craft manufacturers. The level of service from specification right through to commissioning was very good.”

Crowcon is based in Oxfordshire UK and has branch offices in the Netherlands, the USA, Singapore and China.

Images for this article - click to enlarge

The hovercraft under construction for the Swedish Coastguard at Griffon Hoverwork’s facility in Southampton.

Unless otherwise stated, all images copyright © Mercator Media 2014. This does not exclude the owner's assertion of copyright over the material.

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