By Australian Standards (AS/NZS 2293.2-1995), all emergency lighting and signage should be inspected at least once every 6 months. These inspections should include lamp flicker tests, swapping out any bulbs that are deemed defective or have surpassed their usable lifespan, and the conducting of a 90 minute electrical discharge test. This test involves an electrical technician powering off the battery charger for all emergency lighting in order to simulate a power outage for a period of 90 minutes.‍Australian emergency lighting standards stipulate that lights should be able to retain illumination in the face of power outages, allowing building occupants to find their way out of buildings in the event of electrical grid failures, adverse weather, and other emergency situations that may result in your building’s power being cut. Therefore, emergency lighting systems are powered by an isolated battery off the main circuit. This places the  90 minute discharge test amongst the most essential safety measures for all Australian commercial and residential businesses. ‍Alongside these 6-monthly inspections, emergency lighting standards also stipulate that light fittings and reflective surfaces are cleaned and generally maintained at least once every 12 months. This is to ensure that your emergency lighting systems and signage are clearly visible in all light conditions.