Illinois LPN - central lines/TPN

I am DON in a LTC facility where we have never administered TPN as most of our staff are LPN's and I was always told it is out of the scope of practice for LPN's to administer TPN. We have a new administrator that is sure I am wrong, but I have had difficulty actually finding the scope of practice for LPN's in Illinois.

Can anyone help? The LPN's we have are not IV certified.

thanks in advance.