This is what the interpretation guidelines say regarding this clause:
Interpretation Exception procedure
In cases where emergency supplies (e.g. where an established supplier is unable to fulfil an order), bulk commodity purchases or purchases from a supplier prescribed by a customer make it impossible to operate the approval processes in clause 3.5.1.2, the site must have a procedure detailing how these exceptions are handled. The process will include an assessment of the risk of the purchase and the completion of appropriate checks or tests to mitigate any risk. For example, this may include:
•100% inspection of the product
•certificates of analysis
•increased microbiological sampling
•review of a third-party audit report
•a formally agreed specification
•confirmation of compliance with customer codes of practice (refer to clause 3.12.2).
Where raw materials are obtained from a customer-designated supplier (e.g. packaging or when contract packing), the site must ensure that information is obtained about the product and supplier such that potential risks to other products are assessed and controlled.
Where the materials are used to produce a customer-branded product then the exceptions must be communicated to the customer.
So I think that is pretty much what I suspected.... you need to document the procedure you will use to deal with Raw material supplied by unapproved suppliers, and prove that you carry this out by providing records of checks,certs of analysis ( if necessary), and sign off by a senior manager .
Anyone have any other thoughts?