Once
your emergency lighting units are installed, proper maintenance and periodic
checks must be conducted to ensure compliance with industry and safety
standards. Emergency light testing is a required step to make sure that your
system is in proper working condition in case of an emergency. The UK Fire
Safety Legislation states that emergency lighting systems should undergo full
testing annually and should be flick-tested on a monthly basis. Emergency
lighting is a critical investment and requirement in buildings as they ensure
proper illumination of escape routes in case of an emergency. This type of
lighting also enables building occupants to locate fire-fighting and other
emergency equipment in case of a fire.
Emergency
lighting systems are typically powered by self-charging batteries that
automatically recharge with the help of the mains power or a dedicated power
source. Lights or luminaries, as they are called, are either maintained/constantly
on/or non-maintained/triggered on by power supply interruption. Emergency light
testing or test checks as they are commonly referred to are conducted to make
sure that all luminaries and every other part of an emergency lighting system
are in working order as stipulated by the British Standard.
Full emergency light testing is typically conducted by cutting off the mains
electricity supply so as to trigger emergency lighting. The mains supply must
remain switched off for as long as the rated period of the system’s battery and
luminaries must be checked to make sure that they are illuminated at the proper
levels for the entire duration of such period. Should your luminaries fail
anytime during this rated period, your system’s back-up battery must be
replaced immediately. Testing should likewise include a log of all defects and
issues found during the inspection, especially problems that must be remedied
immediately. This is one of the most basic procedures for testing emergency
lighting systems in buildings.
Source - https://www.electricalsafetycertificate.co.uk/emergency-light-testing-in-the-uk-how-is-it-operated