permissions on tape devices

[David Jansen]

How are permissions on SCSI tape devices handled on Fedora?
In our network, only a few machines have a tape drive, so if someone
wants to read or write a tape, they usually login in to the machine with
the drive and do their work.
This worked in previous OS versions, but now the permissions on /dev/nst0 
and other tape devices seem to be reset to group 'disk' only
crw-rw----    1 root     disk       9, 128 Sep 15 15:40 /dev/nst0

I can't see tape devices mentioned in /etc/security/console.perms
Where else can this feature be configured or disabled? 

Just to make things clear: I want any user who has shell access to this
machine to have access to the tape units too. Adding the users to group
'disk' is of course not an option, since that would give them a lot of
other unwanted priviledges.

David Jansen