【Haichuan EPC】Common design issues and common design defects

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Common design issues: ① Unclear division of responsibilities in the design interface, unreasonable organizational structure, and internal conflicts that delay progress. ②The deadline is tight, and training requirements under safety management standards are not adequately met. ③Investment in safety measures is low, and design standards are not updated in a timely manner. ④Major changes in the process plan led to rework. ⑤The technical challenges were not identified at the beginning of the detailed design. ⑥Some alternative solutions were not properly evaluated, and the design inputs were unreasonable. ⑦There is insufficient coordination in design management. ⑧The professionals lack a solid foundation in their skills. ⑨The design documents are not practical to implement, there is much overlap between design and construction, and there are numerous design changes. ⑩The design parameters are not reasonable enough. ⑪Phase 1 did not take into account reservations for Phase 2, and the overall situation was not fully considered at the local level. Common design defects ① Issues between pipes and structures ； ②Problems between equipment and structure ； ③Issue with the orientation of equipment outlets ； ④Failing to establish a review mechanism for each region, without paying attention to details ； ⑤Special geological conditions and water level situations were not fully taken into account ； ⑥The design documents and supplier information do not meet the requirements ； ⑦The depth of the design documents does not meet the requirements, resulting in problems during construction ； ⑧On-site construction errors led to modifications to the source files based on the actual on-site conditions ； ⑨No consideration has been given to the operating and maintenance space as well as supporting facilities ； ⑩Production shutdowns in severe operating conditions are not taken into account ； ⑪The fate and storage of short-term intermediate products at various stages are not considered ； ⑫The actual properties of the main raw materials, intermediate products, and final products involved in the process route are not well understood ； ⑬The impact of regional seasonal environmental conditions on production and facilities has not been adequately demonstrated ； ⑭The customer’s special requests were not given due attention. Design document control