Hi,
If you take a look at your current policy within the small print it will exclude forecourts, airports, offshore working etc.
The cover can be obtained at a steep price, and all equipment etc has to meet certain regs etc. The fact that you use a long hose etc, will not be enough!
The odds of anything going wrong maybe be small if you know what your doing, however if things did go T**S up, you would be up the creek without a paddle!
Regards,
Rob