FROSTCRUISE™ is an efficient, economical, cryogenic replacement for mechanical, diesel-powered truck refrigeration systems. As an indirect cooling method, it provides an eco-friendly solution for the transportation of perishable chilled and frozen food, based on the use of liquid nitrogen (LIN) as the refrigerant. LIN, which is liquid at a temperature of -196 °C, is stored in an insulated on-board tank. In order to use its cooling energy, LIN is piped through a heat exchanger with a large surface area. The liquid nitrogen evaporates as high-velocity fans circulate the compartment air in the truck’s container.

Due to the system’s very low noise emission, FROSTCRUISE™ can also be used at night or at early hours, even in urban areas where laws usually limit noise pollution to 60–65 dB after 10:00 p.m. and before 6:00 a.m. – a level which many diesel-operated refrigeration systems are unable to achieve. This represents a significant advantage for refrigerated trucking businesses, giving them the flexibility to make deliveries even at unusual times or to residential locations.

Research recently reported upon by the Project Management Institute as revealed that those companies that don’t have strong project management cultures and processes in place are putting 9 times more of their budgets at risk…!

Hazardous Area Classification (HAC) for explosive gas atmospheres is well established, with guidance published in various standards and industry codes of practice.  One of these documents, BS EN 60079-10-1:2009 makes use of the concept of a nominal flammable gas cloud volume Vz to determine the level of ventilation and hence the zone.  However, it has been shown that the critical formulae given in the standard to estimate Vz have no scientific justification and therefore provides arbitrary results.

Other calculations based on simple well established jet model theory, validated against experimentally validated Computational Fluid Dynamics (CFD) has been shown to provide solutions that are significantly lower (and potentially less onerous and costly) than those resulting from the use of the methodology in the standard  BS EN 60079-10-1:2009.

Contact us if you wish to learn more about this alternative methodology.


Challenges within supply chains have led to a switch to multi-location distribution networks, according to one industry expert.

Peter Ward, DP World London Gateway cargo supply chain commercial manager, explained that distribution networks need to be “more agile and flexible” as a result of changes in global sources.

Speaking at an agents briefing in Birmingham hosted by Jones Lang LaSalle, Mr Ward noted that the emergence of new and multiple channels look set to result in multiple stocking locations.

“In the UK it may prove optimal for a major distribution centre in the south to complement another operating in the Midlands,” he stated.

The expert added that the DP World London Gateway Port could save firms millions of pounds within their supply chains by enabling them to directly ship goods to London and the south-east.

Mr Ward’s comments come in the wake of new global research by IHS iSuppli, which found that electronic original equipment manufacturers are looking at ways of rationalising their supply chains by reducing the numbers of contractors they use in production.

Quadvent is a mathematical model of a flammable gas jet release that can be used as part of a hazardous area classification exercise under the Dangerous Substances and Explosives Atmospheres Regulations (DSEAR).

It can model releases of flammable gas either in a ventilated enclosure or outdoors.

The model was originally developed by HSL experts in 2011 for calculating the flammable gas cloud volume (Vz) as a scientifically based alternative to the method described in the international standard on area classification IEC EN60079:10-1.

HSL has now developed Quadvent into a software program that is easy to use, quick to run and allows the user to obtain realistic estimates of Vz for a given gas, pressure and hole size and it can take into account the effects of ventilation by specifying the room volume and ventilation rate.

Quadvent also provides estimates of the ventilation rate of naturally ventilated enclosures through a relatively simple model based on the effects of buoyancy and wind driven ventilation.