Why produce a DDS?
Detailed Design Specifications are required to protect both the end user and the manufacturer. All Requirements of the end user will be specified in the FRS prior to the manufacturing of the utility or piece of equipment, the DDS enables the manufacturer to detail the design and have it approved by the end user prior to any manufacturing being initiated. This enables the manufacturer to produce the product to the end user’s expectations once the DDS has been approved by both parties. The manufacturer has the opportunity to review the DDS and incorporate the requirements in their system or offer alternatives to meet the requirement. Some requirements may not be possible to supply and therefore will be addressed prior to the manufacturing stage eliminating possible problems before they occur. The Detailed Design Specification document may evolve with the project and is provided with a Revision History section in order to document any changes that occur throughout the project stages. The final version of the DDS will be a controlled document that can be referenced should any questions arise regarding the final product. The manufacturer must ensure that all aspects of the DDS have been understood and that all requirements can be fulfilled, or alternatives offered, in order to meet the end user’s expectations.