Hi Pad

We use the same system of document control for Quality, Environmental Management and going forward H&S. Essentially:

Each document has a reference, an issue number and a date
There is a document index that shows all of the above and each document has the issue and reference
There is a distribution list for each document and only those documents are controlled and are stamped as such
All changes are made via a document change request, must be signed off by the Quality Manager or myself and are controlled by one person - our doc controller.
Prior to any work that involves reference to a controlled document the supervisor is required to check that the issue number is the right one.

There really is not much to it and our auditors have been happy so far.