I'm a little confused and would appreciate some advice, Under the ACOP it suggests that gas cylinders that comply with what's in your FRA, (i.e smoking and other ignition sources, mobile phone and other electrical devices are not permitted in the area, transport vehicles and mechanical handling equipment should be strictly controlled) do not need a risk assessment under the DSEAR regs, especially as the quantity that we have stored (Butane, acetylene) would come under zone 2 and would not be considered a hazardous place in the sense of the Regulations and the “Ex” sign described in DSEAR need not be displayed. However as highlighted in this HSE webpage http://www.hse.gov.uk/electricity/atex/lpg.htm it suggests if I do have an outdoor gas cylinder storage area, DSEAR does apply! Am I misinterpreting the information, is DSEAR needed or not? Thanks in advance

Yes, DSEAR does apply if you have the specified 'dangerous substances' on site e.g. flammable, highly flammable etc. However, if its a relatively simple situation, as you suggest - then there isn't a problem with addressing the issues under your FRA. No need to over complicate the matter. Follow the recognised guidance for the use/storage of bottled gases. Maybe pass comment in your FRA that, strictly, DSEAR applies - but FRA covers the same points.