Hygiene and food safety of raw materials and end products are vital in the grain and feed milling industry. Millers take great care to ensure processes meet all legislative and food safety requirements. At the same time, consumers expect food to be safe and are increasingly taking an interest in how their food is produced.

1. Digital Re-print -
March | April 2013
Steaming ahead
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3. FEATURE
STEAMING
AHEAD by Thomas Stuecken,
chairman, Osprey
Deepclean, UK
H
ygiene and food safety of raw tion reduces the risk of fine organic dusts Innovative cleaning using
materials and end products accumulating on ledges and crevices, which minimal water
are vital in the grain and feed could result in damage from a fire or dust Compliance and stringent auditing
milling industry. Millers take great care to explosion. requirements, combined with pressure of
ensure processes meet all legislative and Food and site safety concerns, cou- time constraints and cost concerns, means
food safety requirements. At the same pled with high costs for energy, water and millers are looking for a hygiene system that
time, consumers expect food to be safe wastewater treatment are motivating the can save money and work quickly, while
and are increasingly taking an interest requirement for hygiene systems that do not being extremely effective.
in how their food is produced. employ chemicals and that can save on large OspreyDeepclean and its sister manu-
amounts of water. facturer, OSPREYFRANK have developed
Cutting corners in the area of food safety Just as steam power became the fuel an innovative dry steam technology system
can have a serious impact on business. Grain that drove the Industrial Revolution – dry which uses less water than traditional clean-
and feed products in mills are at risk of being steam technology is the latest development ing-in-place (CIP) methods. The new tech-
contaminated by foreign material, insects, playing an increasingly important role in nology meets the challenges of cleaning in
microbes and vertebrate pests. In addition driving trends in 21st century industrial environments such as dry food areas, where
to high hygiene standards, effective sanitisa- cleaning. water systems can’t be used or where there
10 | march - april 2013 Grain &feed millinG technoloGy

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5. FEATURE
is sensitive machinery, motors or anything As well as being applicable to a wide includes the fully auditable dry steam belt
electric and adversely affected by water. range of work settings, steam can be used sanitation unit (BSU) which cleans conveyor
The technology, which is the first of to undertake innumerable cleaning tasks. belts to allergen level, saving up to 3 million
its kind in the UK, uses a continuous flow The system can be used on feeding, mixing litres of water per annum.
heating coil system to heat water to such and blending vessels, machinery, conveyor The organisation has also developed a
a high degree that it becomes extremely belts, rollers, pipelines and also general floor central steam system for food production
hot vapour. The emitted dry steam contains areas, storage spaces and much more. As and packaging areas. This is much like a
minimal moisture and efficient cleaning capa- it is applied to the surface, dry steam central vacuum, which facilitates cleaning
bility is produced from the steam pressure leaves very little residue and can by simply plugging the steam hoses into
made on the surface area. almost touch dry, especially central steam pipes without the need for
when compared handling cleaning machines. The sophisti-
Is all steam cleaning the same? cated equipment can be used for the
So steam is simply steam? Well actually, cleaning of heavy parts and for plastic
no. Steam can be produced in a range parts cleaning. The machines start
of different grades, each matching dif- from a 3kW single phase unit and
ferent industry applications. Picking the reach up to 144kW units avail-
cleaning method best suited to your able in electric, oil or
operation depends upon a number of gas heated coils.
options including the nature of the sur-
face to be cleaned and the type of material
or residue found on crushing or milling appa-
ratus, conveyors and elevator pits and silos. to any
To date, conventional CIP systems have other clean-
tended to rely on traditional boiler systems ing method.
which are only required to heat the water to No additional
a maximum of 75 degrees and rely on high ingredients are required in
water flow and minimal pressure, using a lot the steam to improve cleaning
of water in the process. power, as efficient cleaning capacity
Most food related sites use hot water is produced from the steam pressure
that comes off the boiler through hoses, made on the surface to be cleaned and
using foamers, liquid chemicals and other the solvent power of micro drops at a high
sanitation agents. They can use between temperature, with minimal moisture present.
200-1,000 litres of water per hour to blast a However,
surface clean. They can also have the nega- where specific
tive side effect of sending dangerous bacteria tasks or loca-
airborne, spreading them through the plant tions demand
without killing them. This ‘wet steam’ system it, ingredients
does not use a vapour process. can be added
to improve
Benefits of dry steam cleaning the solidifica-
Efficient cleaning capacity is produced tion of specific
from the steam pressure made on the substances, for
surface to be cleaned and the solvent power instance within
of micro drops at a high temperature, with liquid fat appli-
minimal moisture present. cation devices
The continuous steam system provides which could
constant steam quality which can be adjusted congeal with-
by volume and dryness. Water flow and out the use of
heating power can be controlled and adapt- additional ingre-
ed by an electronic control system. dients.
The amount of water saved depends upon
the flow rate of the water system and the Dry steam
pressure employed, but it can save up to 90 machines
percent of water used. OspreyDeepclean’s dry for different
steam technology will typically use between applications
10-30 litres of water per hour, whereas a The tech-
conventional system will use between 200- nology Osprey
1,000 litres per hour. Deepclean has
Conventional cleaning leaves the risk of developed is
potentially dangerous residues contaminating available in a
food and raw materials. Then you also have range of dry
the issue of getting into difficult spaces, such steam machines
as tight crevices in storage areas or complex for different
shaped equipment. applications,
Dry steam sanitises surfaces, penetrating based on many
cracks, crevices and other hard-to-reach areas years’ experi-
where manual and traditional cleaning methods, ence of creating
which mainly rely on potentially hazardous bespoke steam
chemicals, fail to achieve the required standards. solutions. This
Grain &feed millinG technoloGy march - april 2013 | 11

6. FEATURE
training with regards to correct usage.
The new dry steam technology can be
adjusted by volume and dryness to provide
a constant steam quality, which can be eas-
ily managed and adapted by an electronic
control system.
Osprey Deepclean’s technology is avail-
able in a range of dry steam machines for
different applications. Training is required,
so the various accessories can be used
effectively to safely remove micro-organisms
and bacteria.
Due to the ease of use, industrial steam
cleaners translate to labour savings as well.
Running costs are reduced because the
steam can reach the most inaccessible spots,
avoiding repeated dismantling during main-
tenance and upkeep operations, which can
halve time taken.
This new boiler free technology is at
the forefront of water saving science.
Energy, water, and waste costs are kept
to a minimum, reducing operating costs
and overheads and therefore increasing
turnover and profit. Thanks to its sanitis-
Electrical cabinet Steam generators ing properties, environmental edge and
extreme versatility for all settings and
cleaning tasks, dry steam cleaning is most
This fully integrated system permits the the key investments a company makes. definitely here to stay.
whole cleaning process to become auditable Given the significant sums of money for
using sophisticated PC software. new machinery and the damage defective
products can do, it pays to ensure staff are More inforMation:
Training trained and confident to operating necessary Tel: +44 1242 513123
Modern milling machinery is more effi- equipment. Email: info@ospreydc.com
cient and faster than ever and is one of Any new sanitation process will require Website: www.ospreydc.com
12 | march - april 2013 Grain &feed millinG technoloGy

8. This digital Re-print is part of the March | April 2013 edition of Grain & Feed
Milling Technology magazine.
Content from the magazine is available to view free-of-charge, both as a full
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March - April 2013
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• Additives for flour
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Part I: Enzymes
• Measures for
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the energy
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efficiency of
UFA feed
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Switzerland
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Fine grinding and
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productivity in minerals
weaners for nutrient
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