In August 1993 IAEA published TECDOC-717 entitled Guidelines for Safe Design of Shipping Packages Against Brittle Fracture which also takes the form of a draft Appendix to Safety Series No 37. It was recognised that the views expressed did not necessarily reflect the views of governments of all Member States and an opportunity was given to all Member States to comment before an independent expert was asked to produce a revised draft taking into account comments received and his own technical views. The paper presents a summary of the proposed changes to move the TECDOC forward to the status of Appendix IX of Safety Series No 37 and discusses the key issues involved in designing packages against brittle fracture failure. The responses received from Member States and the position reached at the meeting of the Revision Panel in October 1994 are described and a possible way forward to resolve remaining difficulties is presented. (author).