Functional Area Manufacturing the Product Business Process Assembling the product Purpose: The purpose of Product Integration (PI) is to assemble the product from the product components, ensure that the product, as integrated, functions properly, and deliver the product. Activities: 1. Prepare for Product Integration 1. Identify the product components to be integrated. 2. Identify the verifications to be performed during the integration of the product components. 3. Identify alternative product component integration sequences. (This can include defining the specific tools and test equipment to support the product integration). Select the best integration sequence. 4. Periodically review the product integration sequence and revise as needed 2. Establish the Product Integration Environment 1. Identify the requirements for the product integration environment. 2. Identify verification criteria and procedures for the product integration environment. 3. Decide whether to make or buy the needed product integration environment. (Refer to the Supplier Agreement Management process area for more information about acquiring parts of the integration environment). 4. Develop an integration environment if a suitable environment cannot be acquired. (For unprecedented, complex projects, the product integration environment can be a major development. As such, it would involve project planning, requirements development, technical solutions, verification, validation, and risk management.). 5. Maintain the product integration environment throughout the project. 6. Dispose of those portions of the environment that are no longer useful. 3. Establish Product Integration Procedures and Criteria Procedures and criteria for product integration address the following: Level of testing for build components Verification of interfaces Thresholds of performance deviation Derived requirements for the assembly and its external interfaces Allowable substitutions of components Testing environment parameters Limits on cost of testing Quality/cost tradeoffs for integration operations Probability of proper functioning Delivery rate and its variation Lead time from order to delivery Personnel availability Availability of the integration facility/line/environment 4. Ensure Interface Compatibility The product component interfaces, both internal and external, are compatible. 5. Review Interface Descriptions for Completeness 1. Review interface data for completeness and ensure complete coverage of all interfaces. (Consider all the product components and prepare a relationship table. Interfaces are usually classified in three main classes: environmental, physical, and functional. Typical categories for these classes include the following: mechanical, fluid, sound, electrical, climatic, electromagnetic, thermal, message, and the human-machine or human interface.) 2. Ensure that product components and interfaces are marked to ensure easy and correct connection to the joining product component. 6. Manage Interfaces 1. Manage internal and external interface definitions, designs, and changes for products and product components. (Interface requirements drive the development of the interfaces necessary to integrate product components. Managing product and product component interfaces starts very early in the development of the product. The definitions and designs for interfaces affect not only the product components and external systems, but can also affect the verification and validation environments.) 2. The interfaces should include, in addition to product component interfaces, all the interfaces with the environment as well as other environments for verification, validation, operations, and support. 3. Ensure the compatibility of the interfaces throughout the life of the product. 4. Resolve conflict, noncompliance, and change issues. 5. Maintain a repository for interface data accessible to project participants. 7. Assemble Product Components and Deliver the Product 1. Verified product components are assembled and the integrated, verified, and validated product is delivered. 2. Integration of product components proceeds according to the product integration sequence and available procedures. Before integration, each product component should be confirmed to be compliant with its interface requirements. Product components are assembled into larger, more complex product components. These assembled product components are checked for correct interoperation. This process continues until product integration is complete. If, during this process, problems are identified, the problem should be documented and a corrective action process initiated. 8. Confirm Readiness of Product Components for Integration 1. Confirm, prior to assembly, that each product component required to assemble the product has been properly identified, functions according to its description, and that the product component interfaces comply with the interface descriptions. 2. Track the status of all product components as soon as they become available for integration. 3. Ensure that each received product component meets its description. 9. Assemble Product Components 1. Ensure the readiness of the product integration environment. 2. Ensure that the assembly sequence is properly performed. 3. Revise the product integration sequence and available procedures as appropriate. 10. Evaluate Assembled Product Components 1. Evaluate assembled product components for interface compatibility. 2. Refer to the Verification process area for more information about verifying assembled product components. 3. Refer to the Validation process area for more information about validating assembled product components. 11. Package and Deliver the Product or Product Component 1. Package the assembled product or product component and deliver it to the appropriate customer. 2. Refer to the Verification process area for more information about verifying the product or an assembly of product components before packaging. 3. Refer to the Validation process area for more information about validating the product or an assembly of product components before packaging.