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BSEE EMERGENCY LIGHTING


managers, building owners, and others responsible for life safety, with the most


T


Ian Was, Emergency Lighng Manager at Hochiki Europe, explains some of the more recent updates to BS 52661, and what these changes mean for facilies managers and building owners.


comprehensive guidance for meeting their legal requirements and ensuring the safety and compliance of buildings in their care.


In 2016, the CoP was updated to align the latest UK and European regulations, safeguarding occupants in new and existing buildings. Here, we look at some of the key revisions and the main points that duty holders should be aware of.


Lighng categories


The update to BS 5266-1 recognises a broader range of lighting categories than previous versions. It develops on the earlier document by stipulating the use of emergency safety lighting which still allows occupants to see their surroundings if there is a loss of normal lighting. It is strongly advised that this equipment utilises an automatic testing system.


In the case of an emergency or mains supply failure, stand-by lighting must be able to provide full visibility for occupants trying to leave the building to meet the standard’s escape lighting system requirements. Facilities managers, building owners and others responsible for building security, should undertake a risk assessment to identify areas across their premises that might require back-up lighting in the event of a power failure.


The new CoP also includes additional requirements for “open areas” inside large buildings to ensure that “inner rooms” are adequately lit during an emergency. For example, rooms measuring less than 60sq m may not need escape luminaires, but instead require stand-by lighting in cases of mains supply outage.


The revised CoP further advises that relevant procedures are put in place to determine when premises are best evacuated. That is, whether buildings should be evacuated immediately or if it is safer to install a “stay put” solution, where occupants will be directed to safe refuges. Once again, automatic testing is strongly advised in such situations.


Lux levels


uFIREscape Emergency Lighng complies with the updated emergency standard.


The requirements for lux levels in emergency lighting remain the same as in previous editions of the BS 5266-1.


However, some alterations have been made regarding design conditions for lux calculations, so that lighting remains at the minimum required level for the entire duration of an incident. In addition to this, any externally or internally illuminated Perspex, photo- luminescent or self-adhesive exit signs must now be lit to 100 lux during normal conditions. In the event of an incident, such signs should be set at no less than five lux.


High risk task areas


In spaces where potentially hazardous procedures are carried out, such as in hospitals or loading bays, the revised BS 5266-1 brings new requirements for emergency lighting.


It is now advised to implement procedures to automatically shut down any hazardous operations in the event of an emergency. In this instance, lux values of 10 per cent of the main light level, or else 15 lux – whichever figure is greater – should be employed within 0.5 seconds to minimise potential risk to occupants.


Tesng and maintenance


The new guidance advises that testing emergency lighting systems should only be carried out during a period of low risk, or while the building is empty, to limit disruption and risk to building occupants.


Such tests must be carried out at least once a month to ensure that emergency systems continue to operate at optimum performance. Facilities managers and building owners should appoint an engineer to perform this testing, and to provide routine maintenance tasks on a regular basis. These tests should include checking the power supply of luminaires and cleaning each lamp so as to maintain recommended lux levels. For older or pre-existing fluorescent installations, individual luminaries should be replaced once their ‘black ending’ reaches a point where it might compromise lamp output.


In addition to monthly examinations,


each luminaire must be visually inspected at least once per year to ensure it is working to full capacity, and at the right lux level. Systems should also be tested for their duration to ensure they meet specified performance requirements.


An automac tesng system


The simplest way to achieve the testing and maintenance standards outlined above is by incorporating a certified EN 62034 testing system.


Hochiki’s FIREscape solution is fully compliant with the updated emergency standard. Based around an addressable, intelligent lighting control panel, the system also has a self-testing feature, offering installers an innovative and easy solution and ensuring buildings are fully compliant with the BS5266-1.


Educang the industry


As the world’s technology advances and becomes more ingrained into everyday life, so too do the standards for fire detection and emergency lighting. As the manufacturers of the systems that facilities managers and building owners legally require to protect their occupants, it is our responsibility to ensure we are helping to educate the sector on changes such as these.


In November last year, we hosted an educational webinar about the updated CoP, answering some of the key questions from members of the industry. This session covered points of interest from the updated standard and advice on how to introduce the changes to the maintenance and protection of buildings and their occupants.


If you would like to know more about the latest changes to BS 5266-1 download our free guide from our web site at www.hochikieurope.com, or watch the webinar session in full by visiting the Hochiki Europe YouTube channel at:


www.youtube.com/hochikieurope 32 BUILDING SERVICES & ENVIRONMENTAL ENGINEER APRIL 2018 VISIT OUR WEBSITE: www.bsee.co.uk


The update to BS 52661 recognises a broader range of lighng categories than previous versions. It develops on the earlier document by spulang the use of emergency safety lighng which sll allows occupants to see their surroundings if there is a loss of normal lighng. It is strongly advised that this equipment ulises an automac tesng system.





uIn 2016, the CoP was updated to align the latest UK and European regulaons, safeguarding occupants in new and exisng buildings.


he British Standards Institution (BSI) BS 5266-1 2016 Emergency Lighting Code of Practice (CoP) provides facilities


Adversing: 01622 699116 Editorial: 01354 461430


EMERGENCY LIGHTING STANDARDS What every facility manager should know


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