We are a small R & D company which is considering taking on a job outside of our ISO 9001 certification scope. Our scope states that we only produce prototypes. The job consists of receiving product from another company, testing the product and returning the product to the company. I expect this to be a one time contract. How does ISO 9001 handle taking in jobs outside of the scope?
Of course you'll use your normal processes for acquiring this work, planning this work and billing for this work.
Your recruiting, training and monitoring processes will result in the necessary competence.
That leaves the plan resulting in the necessary materials, facilities and equipment to complete the work to the full satisfaction of the client.
The fact that this work is outside the defined scope of your certification should not stop you from developing, using and improving your management system to deliver quality assurance to all involved.