Ask for the steps or procedure for the three inspections and four fixations in chemical processing units

The so-called three inspections refer to checking for design omissions, identifying potential issues with construction quality, and examining unfinished work. These are tasks that require the joint efforts of the construction party, the design team, supervisors, procurement staff, and other professionals, to be carried out at different stages of construction, with the aim of ensuring that both the construction and design meet the production requirements.

“The “three inspections and four determinations” refer specifically to: checking for missing items in the design, checking the construction quality, and checking unfinished projects； Define the process, plan and measures, operators, and timeline. Check for design omissions: Conduct a final review of the design and construction drawings based on the actual conditions on site, to identify any omissions in the design and determine if any additional design work or improvements are necessary ； Check the construction quality: First, verify whether the installation of process equipment and pipelines is in line with the design drawings, then conduct a thorough inspection of the overall appearance quality. Any issues that require correction should be identified in writing and immediate action taken to address them. For the internal inspection of construction quality, it is required to examine the quality certificates of the installation materials and welding materials, the welding procedure qualification reports, the non-destructive testing reports for pipe welds, and the reports on the purging and pressure testing of the pipeline system ； Check unfinished projects: Conduct on-site inspections to identify which items are supposed to be completed according to the construction schedule but have not yet been finished. Define the process: A detailed, accurate, and feasible manufacturing process must be established, with absolute certainty required throughout its implementation. Formulate plan measures: Based on the process flow diagram, develop a plan that includes each piece of equipment and each pipeline. Designate operators: Determine the organizational structure and operators to ensure unified planning and command. Set a time: Determine the specific date and time. A comprehensive final inspection across all departments prior to the acceptance handover~

“There are basically no objections to the “three checks”. So what are the contents of the “four fixings” standards? Fixing the process, fixing the plans and measures, fixing the operators, and fixing the time. Fixing tasks, fixing personnel, fixing time, fixing measures, fixing plans, fixing costs, fixing personnel, fixing time. -------------------------------------------------------- Let’s clarify this issue first!