Raytec is a world leader in LED lighting for hazardous area environments and industrial applications. SPARTAN is our range of globally certified Ex LED luminaires, also available as heavy-duty industrial variants. SPARTAN luminaires deliver world leading performance, reliability, and durability. In this Application Focus, we explore the lighting requirements for distilleries and identify some of the key features to consider when specifying luminaires for these types of environments.
Why Ex Lighting is Needed for Distilleries
The production of spirits involves several processes that can result in a potentially explosive atmosphere, including the release of vapour during distillation and storage. The correct selection of Ex lighting is therefore imperative.
Distilleries are often found in old and quirky buildings which can present a challenge in itself, but fairly unique amonghazardous area environments, distilleries also often have a dual role as being both a production area for the manufacture of spirits, and also as tourist and visitor attraction. When considering the requirements for lighting, distilleries must therefore do this with both uses in mind.
Typical Areas Requiring Lighting Includes:
Grain Warehouses –
Within grain warehouses and silos there is always airflow and the stored grain deposits layers of dust across surfaces. During loading and unloading operations, these layers can generate a dust cloud as particles are sucked up by the circulating air meaning they are commonly designated as a Zone 21 hazardous area.
Distillation Areas –
The production of alcohol uses heat of up to 70°C, and the vapour it gives off, mean that main distillation areas around the stills & mash
tuns are designated as a Zone 1 hazardous area.
Barrell Storage Areas –
Meanwhile, vapour is also present (albeit to a lesser degree) in barrel storage, where the whiskey is stored and allowed to mature.
These areas are commonly classified as a Zone 2 hazardous area. All luminaires installed on-site must comply to the classification of each area.
Specifying Lighting for Distilleries
The benefits of LED over conventional lighting technology are well documented but are especially relevant for distillery applications
Lifetime and Maintenance
Providing it uses effective thermal management, an LED luminaire can offer a lifetime of 100,000 + operating hours, without the need to re-lamp. With many distilleries facing the challenge of maintaining their required levels of production, balanced with frequent visitor tours, reducing the level and frequency of maintenance is a major benefit.
Reducing running costs is a common goal for most businesses, and LED luminaires help to reduced energy costs by running far more efficiently than conventional lighting. This is beneficial to distilleries of all sizes, but especially to smaller, independent distilleries – production of whiskey is often considered to be a seasonal business where keeping costs down in the slower months is imperative.
Quality of Light
Choosing an LED luminaire allows light quality to be improved, with LED’s capable of providing improved CRI and higher colour temperatures than conventional lighting, drastically improving working conditions. With many distilleries also being used as a visitor attraction, LED luminaires also provide greater flexibility in being able to tailor the light for each area, depending in its use. While higher colour temperatures may be ideal for production areas, warmer colour temperatures may be better suited for parts of the distillery used as part of the visitor tours.
With distilleries often doubling up as tourist attractions, the general aesthetics of lighting in these environments is also important; both in terms of how the luminaire fits in with its environment (i.e. not being an eye sore), and in the quality and visual impact of its light output.
Installing a luminaire which fits in with the architecture and design of the building is important to many distilleries, given that the overall look and feel of the distillery represent the image of the brand to those who visit it. The option to have the luminaire’s painted in bespoke colours can help them to blend in and be less intrusive, or it can even to add to the overall look and feel of the distillery. Notice how we matched the colour of our SPARTAN luminaires to the wood panelling in Torabhaig distillery?
As well as lighting playing an important functional role in the running of the distillery, it can also be used to draw attention to architectural features, or to add to the experience of visitors during tours of the distilleries. The iconic copper stills are often a focal point for many distilleries, so using warmer colour temperatures, or even coloured lenses over the LEDs, can help to add a deeper glow to the colour of the stills.
Using warmer colour temperatures can also make areas of the distillery more aesthetically pleasing for visitors. While it depends on the preferences of each distillery, many opt to use warmer colour temperatures in areas such as barrel storage or tasting rooms to make them more inviting to visitors, while still being compliant with the hazardous area classification. Selecting a luminaire which provides this level of flexibility is an important consideration when specifying lighting for a distillery.
Minimising downtime is crucial to the financial viability of distilleries. If the lighting fails, certain parts of the production process may be unable to take place due to the health and safety risks to the workers and the
visiting general public. This could have a detrimental impact on both the volume of production, and the number of visitors the distillery can receive. Having a lighting solution which allows maintenance to be carried out quickly and easily on-site ensures downtime is kept to a minimum. The key to this is to specify a luminaire which has a modular design and allows maintenance to be carried out on-site. If the luminaire is sealed, any on-site maintenance will not be possible. Any faults would result in the luminaire having to be removed and returned to the manufacturer, increasing downtime.
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Making Easier Access
Choosing an LED luminaire with a removable PSU (Power Supply Unit) can help to make access for maintenance much easier. Luminaire’s such as the SPARTAN High-Power Flood & High-Power Bay, allow the PSU to be removed from the main body of the luminaire, so all wiring and serviceable parts can be positioned in an easy-to-access locations. Let’s consider this benefit in the context of a common application within larger distilleries; grain storage areas. These areas will usually have High Bay luminaires mounted to (or suspended from) the ceiling of the storage building. With non-modular lighting installed, gaining access to the luminaire may require the grain to be removed before maintenance is carried out; a slow and costly process. Plus, even if the luminaire can be accessed without needing to remove the grain, carrying out maintenance with the grain still below is risky; it could lead to it becoming contaminated if anything falls while maintenance is being carried out. In contrast, being able to mount the PSUs remotely means maintenance can be carried out at ground level (so there is no risk of contamination), and the grain does not have to be removed. Ultimately this means maintenance can be done quicker, at a lower cost and risk.
Clean fresh water, which contributes to each whiskey’s flavour, is an essential ingredient of the distillation process and means that distilleries are often located in hard to access locations (such as remote Hebridean islands where power cuts and longer outages can be more frequent). Emergency backup lighting is therefore a necessity to maintain the safety of anyone on-site, providing back up illumination in the event of a power outage. This protects
both visitors and workers on-site and is especially important to any distillery open to the general public.
Duration & Output
To ensure an emergency luminaire will provide back-up illumination for the required length of time, it is important to check the emergency duration when specifying. Consideration should also be given to the level of light output the luminaire provides whilst operating in emergency mode. This is usually expressed as a percentage of the luminaire’s output in normal operation, and it is common for output to drop significantly when in emergency
mode. Most of Raytec’s SPARTAN emergency luminaires provide 25% light output for 3 hours as standard but can also offer up to 100% output for a shorter duration if required. The duration and intensity of output are often specific to individual applications, so this flexibility can be an important benefit.
Some manufacturers are now providing emergency luminaires which increase safety and reliability of emergency systems. Raytec’s SPARTAN Intelligent Emergency luminaires provide a self-testing function which automatically cycle the emergency battery, to maintain its health and to measure its capacity. This ensures the luminaire is operating at its optimum and reduces the requirement for manual intervention. Inspection of emergency luminaires is also made easier, with a tri-colour LED indicator which communicates when the unit is going through a testing procedure and highlighting the health of the luminaire.
Lighting design is an essential part of specifying
lighting within distilleries. The nature of distilleries
means walkways between hot stills need to be well
lit and any pipes or other distillation equipment need
to be clearly illuminated to maintain the safety of
workers and the visiting general public. For specifiers going through the initial design process with a clear brief in mind, a lighting design will provide peace of mind that the final solution will achieve the required, on-site lighting goal, with no surprises at the point of commissioning. Raytec’s completely free lighting design service provides you with the 3D visual representation of the final lighting solution, with detailed lux levels and a true indication of lighting performance. Our lighting design experts will give you dedicated one-to-one support to ensure that the optimum solution is achieved, in-line
with your requirements.
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