The minister is the head of the institution and has the right to know, basically, what's going on with the access requests, including the name, if he or she chooses. The provision you're referring to is section 8 of the Privacy Act. Section 8 contains the disclosure provisions. Generally speaking, the way the framework of the act works is that you're allowed to disclose with the consent of the individuals. It then lists a series of instances when you can share without the consent of the individual concerned, including the one you referred to, which is a consistent use.
There are a lot of others. For example, there's paragraph 8(2)(e), which says that you can disclose the name of an individual to legal services for a specific purpose. Public interest is another one--subparagraph 8(2)(m)(i)--where you may want to disclose personal information, and that's perfectly correct within the regime that exists.
The comment made by another honourable member about the minister who is in a position to disclose it, for example.... He or she may be able to disclose it under another provision of subsection 8(2), which would be perfectly legitimate for the purposes of the Privacy Act.
So there may be instances when personal information comes in--I'm not just talking about the identity of the requester--when it is appropriate to share it if you can fit it into the provisions. The Privacy Commissioner, as well, in 1997 I believe it was, indicated that there were instances when it was perfectly legitimate to release the information if it fell into those section 8 provisions.
I hope that helps.