Preparedness for Power Cuts, Brownouts and Blackouts

updated 09/10/2017

Power failures are common in the wake of storms (BBC) and disasters, man-made or natural; for example floods (Telegraph) and drought (Brazil dries up and blacks out, 2015) even UK mini heatwaves (Ashbourne News Telegraph). Also see South Australia’s Blackout explained (09/2016 black start)

Power outages can also occur without warning because of faults or accidents.

You may need to shelter-in-place and wait it out or you may have to evacuate (Feb 2015: Liverpool One John Lewis evacuated after power cut as restaurants unable to serve food, Liverpool Echo)

 

Power cuts are predicted to become more frequent, not only causing damage to the economy ($180 billion in the USA) but also affect transport, security and health (Lincoln University). Concerns and discussions on the UK energy safety gap are ongoing (Guardian).

2003 – a memorable year for spectacular power cuts

Looking back, 2003 was a particularly eventful year. In the US and Canada 55 million people were affected during the Great Northeast Blackout, 14th August 2003:   Fortunately, most power cuts last only minutes, but even such short durations can have a substantial impact on you personally as well as business. The London Blackout (28 August 2003) lasted just 34 minutes (BBC) during which  

        • 400 calls were taken by the London Fire Brigade
        • 100 rescues were made
        • all main rail services stopped in London and the South East
        • 60% of London Underground was affected

 If not stranded in lifts or underground, thousands of Londoners and visitors either took to the rain soaked streets or found shelter in candle lit pubs and restaurants. Outages not only happen in summer. They happen every day (DNO live twitter list) and can affect everyone. Most spectacularly and recently again London:

 

What is a Brownout? What to do during a Brownout

Brownouts, the opposite of a power surge, refer to a drop in voltage that can last for minutes or hours. Brownouts  commonly occur either by accident or intentional, for example, when used for emergency load reduction to avert a full blown a blackout.     Common signs of a brownout are      

                • flickering lights
                • rapid switching on/off of appliances
                • sudden computer and internet failure

 Usually harmless, brownouts nevertheless can damage your equipment so when you notice rapidly flickering lights, act immediately and unplug your computers, routers, TV, devices being charged, all appliances etc. During a Brownout, as soon as you notice fluctuations (i.e. when the lights start flickering badly)  

            • switch off and unplug computers, TVs, printers, routers, mobile phones, tablets or any other devices that are plugged in and/or charging
            • reduce your power consumption: switch off anything you do not need
            • be ready for a blackout in case your supply fails to stabilise source: https://news.bbcimg.co.uk/media/images/71610000/jpg/_71610198_71610193.jpg

 

Preparedness for a Power Cut – follow these 10 top tips

Know your supplier and how to contact them. Suppliers often host a live power outage map and provide information and support also on twitter. The new emergency number for power cuts is 105 see guidance from your supplier; i.e. UK Power Networks’ Domestic and Business

          • make a checklist/map of all your electrical items that need turning OFF in case of a power cut
          • if you use crucial medical equipment requiring electricity, put yourself on your suppliers priority register
          • alternative communications: keep a plug-in cord telephone for emergencies that does not need electricity; stock spare batteries and power packs for mobile devices
          • alternative power: ranges from power generators to UPS devices (~ 1 hour), batteries and hand-crank or solar operated devices; more see generators

 

What to do during a Power Cut – NEW! CALL 105*

Is it just you? Check your fuse box to see if any have tripped – there could be a problem with your property’s wiring and you may need to call an electrician. If your neighbor is also affected, then call your local distribution company to find out if it’s a network problem. Normally, power cuts are locally or regionally based

          • switch OFF all appliances and equipment that may have been in use before the interrupt
          • leave one light switched on to know when the power is restored
          • secure your property; bells and alarms may not work during the outage (manual warning)

 

What to do when Power is restored

          • check all your equipment and appliances
          • only gradually turn your equipment and appliances back on, keeping an eye on possible fluctuations
          • check and and reset all timer switches; i.e. water heating, gas or oil central heating systems, electric clocks

Additional useful resources to understand what happens, the consequences of power cuts and what you must plan and prepare for and how to prepare for and cope with power outages:

      • list of major power outages wiki
      • electric safety HSE
      • will your landline work during a power cut? Ofcom

 Be prepared, not scared. Have a good week.

Monika | @MonikaAlMufti 

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4 thoughts on “Preparedness for Power Cuts, Brownouts and Blackouts

  1. Callum

    Great post, excellent blog. Will bookmark and come back in the future. I want to encourage you continue your great writing,
    have a nice holiday weekend!

  2. Matt

    They say a ‘black start’ will take three days in the UK but that is best case scenario and noboby actually knows. I particularly feel sorry for those in any large city like London who will be at the tail end of these 72 hours or more…GET PREPARED!

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