• Amy Richards
    Hi, does anyone know if modern mobile phones and certain types of clothing (for example polyester which can cause static) are considered to be a source of ignition inside a hazardous zone 2? TIA
  • MattD2
    under the definition of an ignition source in the Haz Sub regs the simple answer would be yes:
    ignition source—
    means any agency or agent (including any item, product, part of a facility structure, or piece of equipment) capable of igniting a flammable gas, vapour, or other form of combustible substance; and
    includes a fire, flame, or spark, or anything capable of producing a fire, flame, or spark
    Health and Safety at Work (Hazardous Substances) Regulations 2017

    However with your reference to Zone 2 I would assume that you are controlling the risk of ignition through compliance with AS/NZS (or IEC/EN) 60079.14:2009 which makes the question more about the ignition energy required / energy available, rather than specifically how that energy has been created/stored/discharged, and therefore would need someone to look at your unique situation to give you a more definitive answer.
  • Dianne Campton
    If there is a risk of potential explosion or ignition sources, then yes you should ban them. All petroleum plants will not allow phones on site due to the risk. Paint plants have areas where static would cause explosion. The reason service stations 'ban' mobile phone use on forecourts is that, static from clothing can cause fumes to ignite - you don't need a mobile phone for that to happen but using one can create the necessary electrical charge to ignite any fumes. I have witnessed this on a forecourt and, believe me, you don't want to be anywhere near when it happens.
  • Melissa Blackmore
    @Dianne Campton I had been using the example of mobile phones on forecourts in a discussion with our staff around HazSub, when a worker pointed me to Z's website that states they had conducted an independent risk assessment and the "findings showed mobile phones as an ignition source poses no risk to our customers" while refueling. The same worker reminded me that at several stations you can use your phone to pay also. Z's reasoning is that mobile phones now have batteries that are more efficient and fully enclosed, and phones are manufactured to be dust and water resistant. Makes for an interesting read.
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