Review of the PDS model in Phase 3
Thread Content
At this stage, as the project developer, where should they start? On which specific items should the focus be placed? I would appreciate any advice from fellow travelers who have had similar experiences.
The PDS model review in the third phase is a 90% PDS review; the key focus areas are as follows: 3D model review phase and contents (1) 30% model review (equipment positioning review) The positioning of all equipment and the orientation of their openings； Frameworks (steel and concrete) and buildings ； Main operation channels and ladders ； Major main pipelines or critical process pipelines ； Equipment and unit orientation ； Reserved escape routes ； Pipe bridges and main pipeline support frameworks ； Shape of the underground cable trench for instrument electrical systems ； Lifting/core-pulling space, mobile crane guard. (2) 60% model review All pipelines are basically completed ； Platform ladders on towers and equipment ； Fixed cranes and their beams ； Valve operation platform ； Final dimensions of steel structures and buildings ； Eyewash station location ； On-site control panel ； Fire protection system ； Instrument connectors ； Surface instrument cable trunking. A 60% model review is crucial for the layout of pipes and equipment; once approved, the construction drawings can be prepared and sent to the construction site and prefabrication site. The 60% model review areas should be carried out in sequence according to the construction plan; therefore, the improvement of the model and the 60% model review should also take place in order. (3) 90% model review: Review after the model is fully built. (4) Review records: The 3D model used for review should allow direct access to the model review demonstration interface. During the review, the system should have a function for assigning automatically numbered labels, which are then stored automatically. The device area code should be pre-entered into each review area model; once the review comments are entered into the system, detailed explanations can be provided to make them easier for others to understand. Provide pipe segment diagrams and the size ranges of pipes in axonometric views. All drawings and documents are provided by the model and its database; the drawings are categorized as follows: (1) 30%, 60%, and 90% 3D colored models for review ； (2) Equipment layout plan ； (3) Pipe layout plan ； (4) Axonometric view of pipe section ； (5) Plan and elevation layout of structure ； (6) Instrument layout plan ； (7) Foundation plan layout ； (8) 2D graphics and files should be extracted from 3D graphics and labeled. The dimension range of the isometric drawing includes all process pipelines in the P&ID, as well as the utility pipelines above the ground level.
The creation of 3D models can basically be divided into 4 stages, and the tasks for each stage should be carried out step by step. 5.1 Phase 1: 30% of the total progress is completed in this phase.
5.1.1 Tasks:
- Establish a database specific to the project; standard components can be disregarded for now.
- Create models and locate all equipment (including complete sets of equipment).
- Develop models of structures (steel and concrete structures) such as frames and pipe racks.
- Create models of pipelines on the pipe racks, as well as models of fixing or restraining structures.
- Develop models of the main pipelines that determine the location of the equipment.
- Design concrete floors, paving surfaces, and roads.
- Define and mark escape routes.
- Design cable trays for major electrical and instrumentation systems.
- Determine the shape of buildings such as control rooms.
- Identify areas for lifting, dragging, and craning, as well as the operating range of cranes.
- Develop models of the main underground pipelines.
5.1.2 Deliverables:
- Preliminary layout diagrams of equipment.
- Preliminary layout diagrams of equipment foundations.
- Preliminary layouts for electrical/instrumentation cables.
- Layout diagrams of main underground pipelines.
- Review 30% of the models.
5.2 Phase 2: 60% of the total progress is completed in this phase.
5.2.1 Tasks:
- Update the database.
- Update the main steel structures, pipe racks, secondary structures, and supports based on calculations.
- Develop detailed models of pipelines with a diameter of 2” or more, as well as models of various valve assemblies.
- Design platforms, ladders, and passages for maintenance or valve operation.
- Arrange eyewash stations and showers.
- Design supports for major and special pipelines (general-purpose supports).
- Design supports for insulated pipelines and supports for bare pipelines.
- Determine the exact paths of floor-mounted instruments and cable trays.
- Define the shape of instrument junction boxes and control panels.
- Make modifications or confirm the feedback from the review of 30% of the models.
5.2.2 Deliverables:
- Construction drawings for main steel structures and pipe racks.
- Diagrams showing the positions of equipment connections.
- Preliminary axonometric diagrams of main pipelines, MTO statistics, and preliminary stress analysis reports.
- Updated layouts for electrical and instrumentation cable trays.
- Complete collision checks for Phase 2.
- Review 60% of the models.
5.3 Phase 3: 90% of the total progress is completed in this phase.
5.3.1 Tasks:
- Complete the development of the database for pipeline components.
- Make modifications or confirm the feedback from the review of 60% of the models.
- Complete models of secondary and auxiliary steel structures.
- Finalize the models of equipment.
- Improve the pipeline models from Phase 2 and develop models for insulated pipelines with a diameter of 2” or less.
- Develop models for supports for such pipelines.
- Develop standard general-purpose supports for pipelines with a diameter of 2” or more.
- Final feedback will be provided at this stage; the models are essentially complete, and a review meeting for 90% completion of the models will be held.
5.3.2 Deliverables:
- Construction drawings for other structures.
- Preliminary axonometric diagrams of remaining pipelines.
- Construction-level axonometric diagrams of major process pipelines.
- Third set of MTO data extracted from the models.
- Layout diagrams for electrical and instrumentation cables.
- Complete collision checks for Phase 3.
- Feedback from the review meeting for 90% completion of the models.
5.4 Phase 4: 100% of the total progress is completed in this phase.
5.4.1 Tasks:
- Make modifications or confirm the feedback from the review of 90% of the models.
- Develop models for bare pipelines with a diameter of 2” or less.
- Develop standard general-purpose supports for pipelines with a diameter of 2” or less.
- Finalize the pipeline models.
5.4.2 Deliverables:
- Construction-level axonometric diagrams of remaining pipelines.
- Plan views of pipelines (construction version).
- Complete the final MTO analysis, and prepare statistics related to insulation and painting materials.
- Conduct final collision checks
5.1.1 Tasks:
- Establish a database specific to the project; standard components can be disregarded for now.
- Create models and locate all equipment (including complete sets of equipment).
- Develop models of structures (steel and concrete structures) such as frames and pipe racks.
- Create models of pipelines on the pipe racks, as well as models of fixing or restraining structures.
- Develop models of the main pipelines that determine the location of the equipment.
- Design concrete floors, paving surfaces, and roads.
- Define and mark escape routes.
- Design cable trays for major electrical and instrumentation systems.
- Determine the shape of buildings such as control rooms.
- Identify areas for lifting, dragging, and craning, as well as the operating range of cranes.
- Develop models of the main underground pipelines.
5.1.2 Deliverables:
- Preliminary layout diagrams of equipment.
- Preliminary layout diagrams of equipment foundations.
- Preliminary layouts for electrical/instrumentation cables.
- Layout diagrams of main underground pipelines.
- Review 30% of the models.
5.2 Phase 2: 60% of the total progress is completed in this phase.
5.2.1 Tasks:
- Update the database.
- Update the main steel structures, pipe racks, secondary structures, and supports based on calculations.
- Develop detailed models of pipelines with a diameter of 2” or more, as well as models of various valve assemblies.
- Design platforms, ladders, and passages for maintenance or valve operation.
- Arrange eyewash stations and showers.
- Design supports for major and special pipelines (general-purpose supports).
- Design supports for insulated pipelines and supports for bare pipelines.
- Determine the exact paths of floor-mounted instruments and cable trays.
- Define the shape of instrument junction boxes and control panels.
- Make modifications or confirm the feedback from the review of 30% of the models.
5.2.2 Deliverables:
- Construction drawings for main steel structures and pipe racks.
- Diagrams showing the positions of equipment connections.
- Preliminary axonometric diagrams of main pipelines, MTO statistics, and preliminary stress analysis reports.
- Updated layouts for electrical and instrumentation cable trays.
- Complete collision checks for Phase 2.
- Review 60% of the models.
5.3 Phase 3: 90% of the total progress is completed in this phase.
5.3.1 Tasks:
- Complete the development of the database for pipeline components.
- Make modifications or confirm the feedback from the review of 60% of the models.
- Complete models of secondary and auxiliary steel structures.
- Finalize the models of equipment.
- Improve the pipeline models from Phase 2 and develop models for insulated pipelines with a diameter of 2” or less.
- Develop models for supports for such pipelines.
- Develop standard general-purpose supports for pipelines with a diameter of 2” or more.
- Final feedback will be provided at this stage; the models are essentially complete, and a review meeting for 90% completion of the models will be held.
5.3.2 Deliverables:
- Construction drawings for other structures.
- Preliminary axonometric diagrams of remaining pipelines.
- Construction-level axonometric diagrams of major process pipelines.
- Third set of MTO data extracted from the models.
- Layout diagrams for electrical and instrumentation cables.
- Complete collision checks for Phase 3.
- Feedback from the review meeting for 90% completion of the models.
5.4 Phase 4: 100% of the total progress is completed in this phase.
5.4.1 Tasks:
- Make modifications or confirm the feedback from the review of 90% of the models.
- Develop models for bare pipelines with a diameter of 2” or less.
- Develop standard general-purpose supports for pipelines with a diameter of 2” or less.
- Finalize the pipeline models.
5.4.2 Deliverables:
- Construction-level axonometric diagrams of remaining pipelines.
- Plan views of pipelines (construction version).
- Complete the final MTO analysis, and prepare statistics related to insulation and painting materials.
- Conduct final collision checks