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Truck and Track

June/July 2017

www.truckandtrack.com

48

SAFETY & SECURITY

We are seeing an increasing use of CCTV in refrigerated vehicles

over and above that commonly used elsewhere in the world of

logistics. Indeed there are various reasons why this should be

the case.

As regards Health and Safety, operators want to be certain that

their employees are following company procedures when working

in chilled and frozen areas. Given the low temperatures, the

potential for slips and trips is increased, and obviously workers

should be shown to be wearing the appropriate personal protective

equipment (PPE) when carrying out tasks in that environment.

There is also a maximum exposure time for operatives in low

temperature conditions, and compliance can be monitored using

CCTV. At amore general Health and Safety level, logistics companies

need to ensure that employees are using the correct lifting

techniques and manual handling equipment appropriate to their

loading and unloading procedures.

Frozen or chilled produce is often of high value and can be easily

damaged in transit if not stored or loaded correctly. Operators are

increasingly taking proactive measures to ensure that produce

is delivered in prime condition. To avoid potential issues with

customers, CCTV footage can be used to verify that produce has

been offloaded from a vehicle in good condition, or not as the case

may be.

Finally, the CCTV system can be used to check that employees are

not deliberately damaging produce or falsely claiming that produce

has been damaged and are not stealing from or defrauding the

company.

The CCTV system for cold chain applications is similar to more

standard systems, apart fromthe need to fit special heated cameras

in the chilled or frozen section.

You often need to use more cameras, since loading and unloading

are often undertaken via a side or rear door, and there can be

movablebulkheaddividersthatallowtheloadareatobepartitioned

into different configurations. These variables mean that you would

require more cameras than first thought, in order to provide the

necessary visual coverage of internal and external work areas.

Hardware-wise, standard cameras will work down to the

temperature range that frozen containers are run at, typically

-8° to -25°C dependent upon produce. Nevertheless, at those

temperatures the camera lens will ice over. Therefore, for use inside

chilled or frozen containers, Vision UK supplies cameras with built-

in heaters which ensure that the lens remains frost-free.

An added complication is that a camera must not be allowed to

totally freeze over, as otherwise it takes too long to defrost the lens,

and the camera would be out-of-action for lengthy periods. So

typically, in frozen bodies (not necessarily in chilled environments),

the cameras are permanently powered up – or the system is

operated on a timer so that the cameras can be operated as and

when required.

For details of Vision UK’s innovative solutions for CCTV monitoring

on refrigerated vehicles, call 0800 731 3316 or go to the website

www.vision-uk.co.uk.

Rick Treharne, Managing Director of the Cheshire-based CCTV solutions provider Vision UK, shares

with readers his knowledge and experience of monitoring in the special environment of refrigerated

transport

Keeping a close eye on

cold chain vehicles