Functional design specification
If the DDS is not in the scope, then the content of the DDS will need to be part of the FDS.
The FDS document is supposed to work as a V&V document to be used in the FAT to make sure the OTS has been built correctly and that it is the right system for the contractor.
Please refer to the FAT section of this chapter to see what we need to achieve in the witnessed test, and then we need to address all these points in the FDS document.
So, what needs to be in the FDS?
In the FDS, we need to clearly specify the OTS scope in terms of hardware, software versions, and licenses. We list all the documents used to build the OTS, including P&ID versions, datasheets, C&E versions, FATed ICSS version, and the date of issue. All the deliverables will need to be listed so that they can be checked during the FAT.
A sample of the FDS document content can be found in Chapter 6, OTS Sample Documentation.