What is the “handover” in chemical engineering projects? What are CCCC’s standards?
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The ‘completion of construction’ in a project represents an important milestone. Let’s take a look at what is meant by completion of construction in chemical projects as well as the relevant standards. In chemical projects, ‘completion of construction’ refers to the intermediate handover, which is a crucial transition point as the project moves from the construction phase to the commissioning phase. After the construction contractor has completed the construction tasks related to civil work and installation within the scope of the contract, and after the quality of the work has been verified as satisfactory through self-inspection, it hands over the entire project or certain parts of it to the project owner. At the same time, relevant technical documents, specialized tools, and any remaining materials are also transferred over. Before the handover to CCCC, the previous owner should organize experienced professionals and operators to carry out the \"three inspections and four determinations\" process, implement corrective measures, and pay special attention to any missing safety measures or design defects. “An intermediate handover is carried out after the completion of the \"three inspections and four determinations,\" and the responsibility for comprehensive safety coordination is transferred from the construction unit to the project owner. The significance of EPC: 1. Clear division of responsibilities. Before adopting the EPC model, the main responsibilities for the quality, safety, and schedule of a project lay with the construction contractor ； Upon completion of the handover, responsibilities such as the storage of the equipment and subsequent commissioning fall from the construction party to the project owner, which helps to avoid management chaos and shifting of responsibilities due to unclear roles. 2. By ensuring proper control of the project schedule and reaching key milestones, CCCC’s success indicates that the project is progressing steadily toward the testing phase. This helps to secure time for the subsequent feeding of materials into the chemical processing units and for pilot production, thereby enabling a more compact and organized timeline for the entire project. 3. Quality control and review: During the construction phase, the construction and supervision units should conduct thorough inspections of the project in accordance with design specifications and contractual standards. Multiple rounds of inspections from various angles help to identify potential quality issues, preventing such issues from affecting subsequent testing and commissioning processes. China Communications’ standards 1: Completion of the physical construction aspects of the chemical plant, such as a stable building structure and fire- and explosion-proof wall enclosures ； The equipment is installed precisely in place, and the pipe connections are secure with no leaks ； The individual tests of each mechanical and electrical device have been successful, ensuring that the devices operate properly and are ready for subsequent joint tests. 2. Complete transfer of documents: Ensure that all relevant documents generated during the construction process, such as design change documents, equipment specifications, material quality certificates, records of concealed works, and pressure testing records, are available in full and complete, so that they can be referred to at any time for subsequent operation, maintenance, and renovation purposes. It should be handed over to the construction unit at the time of handover. 3. Cleanup is completed: The construction site is cleaned thoroughly, removing construction waste and excess materials, dismantling temporary facilities, and leveling the ground to ensure that the area surrounding the equipment meets safe and tidy conditions for testing. 4. Completion of training and briefing: Key points regarding the operation and maintenance of the equipment are explained, and technical training and briefings are provided to the operators of the construction party, so that those taking over can become familiar with the equipment and the production process. The above information is for reference only; specific items may vary slightly depending on actual circumstances.
The standards for Sinopec and CCCC can be summarized as: three checks, four determinations, nine completions, and five handovers. That is: three checks: check for omissions in the design, check for potential quality issues in construction, and check for unfinished work. Four fixations: Determine tasks for the issues identified during the inspection, identify the units and personnel responsible for handling them, define the measures to be taken, and set deadlines for making corrections. Step 9: 1. The project is completed in accordance with the specifications outlined in the design documents ； 2. The preliminary assessment of the project quality is satisfactory ； 3. The pressure tests of the process pipelines and power pipelines have passed; the system has been cleaned, purged, and found to be airtight, with insulation work essentially completed ； 4. Strength test of static equipment, non-destructive testing, and cleaning completed successfully ； 5. The individual testing of mechanical equipment has been successful (except for those that require specific materials or special media and have not yet undergone testing) ； 6. The load testing of large-scale units using air, nitrogen, or other media was successful; the automatic control systems such as unit protection interlocks and alarms were also properly calibrated and tested ； 7. The electrical, instrumentation, computer, as well as gas and fire prevention/explosion protection systems of the installation have been successfully tested and calibrated ； 8. The temporary facilities used for construction in the plant area have been removed; work is complete, all materials have been used up, and the site is clean; the vertical structure construction has been finished ； 9. The items related to the \"three inspections and four fixations\" that affect the joint commissioning, as well as any design changes, have been dealt with; responsibilities for all other unfinished tasks are clear, along with their respective completion dates. Handover of five aspects: 1. Verification and handover of the actual quantities of the project in accordance with the design specifications ； 2. Review, verification, and handover of preliminary project quality assessment documents and relevant commissioning records ； 3. Handover of specialized tools, instruments, and remaining spare parts and materials ； 4. Settlement of outstanding project items and confirmation of completion time ； 5. Handover of random technical documents.