hi there
i would suggest that if you require this asap then it cant be a generic one, it sounds as if your client wants the real deal, ie you need to assess the site then construct the method statement in regards to that.
you may even find that they want a PASMA qualified person to install the tower.
if you are hiring the tower in, then on the paperwork which they have to give you now,it details a whole lot of info that will go a long way toward your method statement.
regards
martin