I would agree with Phil, unless you are 100% certain that the floor does not require a lot of work, pass it on to someone who knows exactly what they are doing, go along and watch by all means, then figure if its worth being trained for. If your insurance allows this sort of procedure to be carried out, ensure that you can prove that you or your staff are competent to do the work. Sanding of wooden floors can and do go horribly wrong, and there is no cheap fix, if you insurance refuses to pay, the cost of replacing or fixing the floor could run into many thousands of pounds!
Regards,
Rob