19: Design Input Issue
Definition/Typical Issues
Was there a failure to consider all the appropriate design inputs during the design phase? Was the design input inconsistent and incomplete?
Examples
Example 1
- A valve failed because equipment conditions during operation, such as corrosivity, were not considered during design. The valve failure resulted in a small steam leak.
Example 2
- A pump failed to deliver enough cooling water in an emergency because emergency requirements were not considered in the design.
Typical Recommendations
- Conduct a feasibility review prior to beginning design to ensure that the criteria can be met.
- Develop a preconstruction planning and review process to help ensure that all specifications are in agreement.
- Eliminate duplicate copies of design information to avoid confusion of which is the "official" version.
- Develop standards for symbols and terminology.
- Implement methods to control access and changes to design information.
- Develop methods for approving changes to design documentation.
- Ensure that appropriate personnel are aware of recommended practices contained in recognized and generally accepted good engineering practices (RAGAGEPs) and apply their requirements.
Cross-References
| Version 10 Element(s) | |
|---|---|
| Node ID | Node Name |
| 16 | Design Input LTA |
| RBPS Element(s) |
|---|
| Compliance with Standards |
| Maritime Element(s) | |
|---|---|
| Node ID | Node Name |
| 21 | Design Input Issue |