PropDuster, the only ATO I know of in Tassie who can do a CIR is Doug Chipman in the south of the State. Sorry I don't have a contact number but if you contact the Aero Club of Southern Tas (03) 6248 5370 they will be able to give it to you.
However, the real problem is getting a suitable aircraft in which to do the test as there are very few, if any, twins which are available for hire.