The existing 70 serial papers have constructed a nine-level global full-lifecycle anti-corrosion governance system covering technical specifications, intelligent early warning, industrial chain coordination, national public service platform, cross-border compliance, data sovereignty, interdisciplinary governance and achievement industrialization incentive. In the actual EPC general contracting, engineering design, construction delivery and handover operation links of titanium heating equipment projects, traditional two-dimensional drawing design, decentralized document archiving, scattered material inspection data and paper-based anti-corrosion handover materials often lead to information discontinuity between design, manufacturing, installation and operation and maintenance links. Defects such as anti-corrosion design parameter omission, pipeline dead zone unreasonable layout, on-site construction passive film damage not recorded, anti-corrosion acceptance documents lost occur frequently, which inherit into long-term hidden corrosion risks in the later operation stage. Based on the existing whole-lifecycle traceability and digital governance framework, this paper introduces BIM building information modeling technology, constructs a full-process intelligent collaborative anti-corrosion digital delivery system integrating parametric anti-corrosion design, manufacturing data embedding, on-site construction process recording, acceptance closed-loop filing and one-click handover of operation and maintenance anti-corrosion archives, supplements the digital collaborative design and engineering delivery dimension for the original governance ecosystem, realizes the seamless connection of anti-corrosion information from the design source to the later full lifecycle, eliminates information fragmentation in the engineering construction stage, further blocks the inheritance path of construction-induced corrosion hidden defects, and improves the digitization level of the whole industry chain anti-corrosion governance.
1. Pain Points of Traditional Engineering Anti-Corrosion Information Delivery and Typical Derived Corrosion Risks
In the traditional EPC engineering delivery mode, the isolation of anti-corrosion information in each stage forms multiple information barriers, which derive typical equipment corrosion hidden dangers: First, two-dimensional drawing cannot realize anti-corrosion collision check and dead zone pre-judgment in the design stage. Traditional design only completes equipment layout and pipeline path drawing through two-dimensional drawings, lacking parametric corrosion attribute information such as medium chloride concentration, design temperature, environmental corrosion grade, required coating thickness, pipeline minimum drainage gradient. It is easy to design low-lying retention dead zones, overlapping steel and titanium friction collision positions, uninsulated flange exposed structures. These design defects cannot be found in the early design review stage, and will evolve into crevice corrosion, fretting corrosion and atmospheric pitting corrosion after equipment put into operation. Meanwhile, the anti-corrosion material selection, passivation process requirements, bolt torque design values and other key parameters are scattered in design specifications, which are prone to being ignored by manufacturing and construction personnel, resulting in non-compliant material procurement and non-standard construction. Second, the anti-corrosion inspection data of raw materials and factory processing cannot be associated with the equipment model. After titanium pipes, welding wires and sealing materials enter the factory for acceptance, the inspection reports are stored as independent paper documents. Once there are batch impurity exceeding standards or unqualified welding process records, it cannot be quickly associated with the corresponding pipeline components in the project, resulting in the inability to carry out targeted retrospective hidden danger elimination after subsequent corrosion accidents. The factory passivation, salt spray test and other anti-corrosion acceptance data are not bound to the component BIM unique coding, leading to the loss of the original anti-corrosion performance basis in the later operation and maintenance stage. Third, on-site installation anti-corrosion protection process lacks whole-process digital recording. In the links of equipment hoisting, pipeline assembly, pressure test and coating repair, passive film scratch, coating collision damage, chloride-containing pressure test medium residue and other hidden dangers occur frequently. Traditional paper construction logs only record simple construction progress, without photographing, positioning and parameter recording of anti-corrosion damage positions and repair schemes. After handover, operation and maintenance personnel cannot know the historical damage points of equipment, and cannot formulate targeted intensified inspection schemes, making these positions become high-incidence areas of corrosion leakage. In addition, the actual fastening torque of each flange, the type of temporary sealing gasket used in the pressure test, the drainage cleaning records of pipeline dead zones cannot be traced one by one. Fourth, decentralized paper archives are easy to be lost, resulting in the disconnection of whole-lifecycle anti-corrosion traceability. After the project is completed, design specifications, incoming inspection reports, construction anti-corrosion repair records, acceptance test data are bound into multiple paper files. Once the project is delivered for many years, the archives are lost or damaged, and when corrosion failure occurs, the root cause cannot be traced back to the design, manufacturing or construction link. The traditional handover mode cannot realize the automatic inheritance of anti-corrosion parameter thresholds, maintenance cycle requirements and equipment high-risk corrosion point distribution maps to the operation and maintenance end, and operation and maintenance personnel can only rely on experience to carry out maintenance, repeatedly falling into the risk of irregular maintenance.
2. Overall Framework of BIM-Based Full-Process Anti-Corrosion Intelligent Collaborative Digital Delivery System
The system adopts the architecture of "BIM parametric modeling layer – multi-party collaborative cloud platform layer – whole-lifecycle anti-corrosion data linkage layer – operation and maintenance digital delivery terminal layer", and realizes four core closed-loop business modules: parametric anti-corrosion collaborative design, factory manufacturing data embedding binding, on-site construction anti-corrosion process whole-record, project completion anti-corrosion one-click digital handover.
2.1 BIM Parametric Anti-Corrosion Collaborative Design Module
Establish a standardized titanium heating equipment anti-corrosion BIM component library, each component pre-embeds multi-dimensional anti-corrosion attribute parameters: material grade, impurity element control index, design corrosion risk grade, required passive film thickness, anti-corrosion coating type and design thickness, allowable working temperature and medium chloride threshold, flange design fastening torque, pipeline drainage gradient, recommended maintenance inspection cycle, high-risk corrosion hidden point early warning label. In the three-dimensional collaborative design platform, realize automatic collision detection between titanium pipelines and steel supports, automatic identification of pipeline low-lying dead zones, one-click statistical classification of all outdoor atmospheric exposed components. For positions identified as high corrosion risk, the system automatically pops up anti-corrosion design modification suggestions: increase support PTFE insulating liner, optimize pipeline gradient to realize self-drainage, thicken weather-resistant anti-salt-fog coating, reserve convenient cleaning and emptying interfaces. Multiple parties including design institute, equipment manufacturer, owner and third-party anti-corrosion consulting unit carry out online collaborative review of the BIM model, all anti-corrosion design modification records are stored in the cloud with version numbers, and the final confirmed BIM model and all embedded anti-corrosion parameter data are used as the unified bottom-line basis for subsequent manufacturing, procurement and construction acceptance, eliminating the deviation of two-dimensional drawing information transmission.
2.2 Factory Manufacturing Anti-Corrosion Data Embedding and Component Unique Code Binding Module
Each BIM component corresponds to a globally unique anti-corrosion traceability two-dimensional code, which is marked on the physical titanium component. In the raw material incoming inspection link, upload the titanium batch inspection report, welding material environmental compliance test certificate to the cloud platform and bind it to the component unique code; in the processing and manufacturing stage, record cold bending forming parameters, post-welding stress relief process records, non-destructive testing sampling results, chemical passivation process parameters, salt spray anti-corrosion test data, and realize the one-to-one binding between manufacturing anti-corrosion quality data and BIM model components. Unqualified components will be marked with red risk labels on the BIM model, locked from entering the subsequent construction link, and forced to be returned for rework; all qualified component anti-corrosion data will be synchronized to the EPC collaborative cloud platform, laying a data foundation for on-site incoming acceptance and later whole-chain traceability.
2.3 On-Site Construction Anti-Corrosion Whole-Process Digital Recording and Closed-Loop Acceptance Module
Construction personnel use mobile terminals to scan the component two-dimensional code to complete incoming anti-corrosion acceptance, verify whether the actual material and factory anti-corrosion test data are consistent with the BIM design parameters. In the hoisting, assembly, pressure test and coating repair links, once passive film scratch, coating damage and other anti-corrosion defects are found, locate the defect position on the BIM model in real time, upload on-site photos, record the damage range, repair process, repair material model and acceptance personnel information, and form a closed-loop repair record. All flange bolt actual fastening torque values, pressure test medium type and chloride residue detection records, pipeline dead zone cleaning and blow-drying records are filled in the mobile terminal and bound to the corresponding BIM node. The system sets anti-corrosion acceptance mandatory check items; unaccepted components cannot proceed to the next construction process, fundamentally avoiding hidden corrosion defects caused by unrecorded on-site non-standard construction. After the single-part acceptance is passed, the BIM model automatically updates the anti-corrosion state label, and all construction anti-corrosion records are permanently stored in the cloud platform.
2.4 Completed Project Anti-Corrosion One-Click Digital Handover and Operation and Maintenance Archive Inheritance Module
After the overall project completion acceptance, the system automatically sorts all BIM three-dimensional models, full-process anti-corrosion design parameters, raw material inspection archives, manufacturing test reports, on-site construction defect repair records, acceptance data, high-risk corrosion point distribution maps, standardized maintenance cycle parameters, emergency leakage blocking position layout into a complete digital anti-corrosion delivery archive package. The owner's operation and maintenance department obtains the authorized access permission of the BIM anti-corrosion platform, can visually view the spatial distribution of all equipment high-corrosion risk points, call the whole-process historical anti-corrosion traceability data of any component, and the system automatically pushes regular maintenance reminder tasks according to the embedded maintenance cycle parameters. The digital archive is synchronously connected to the enterprise internal whole-lifecycle anti-corrosion management system and the national industrial anti-corrosion public service platform, realizing the seamless inheritance of engineering anti-corrosion data from the construction stage to the long-term operation and maintenance governance stage, completely solving the problem of paper archive loss and information fragmentation.
3. Collaborative Governance Mechanism of Multi-Party Stakeholders Based on BIM Anti-Corrosion Cloud Platform
Build a hierarchical authorization collaborative management mechanism for design, manufacturing, EPC general contracting, construction, owner, third-party supervision and anti-corrosion consulting institutions: The design side has the authority to edit the initial BIM anti-corrosion parametric model and version iterative update; the equipment manufacturer has the data upload authority of raw material and factory processing anti-corrosion inspection records, without modifying the design parameter attributes; the construction unit only has the mobile terminal defect recording, parameter filling and process acceptance authority; the supervision and anti-corrosion third-party institutions have full-data browsing, acceptance review and hidden danger marking authority; the owner has the highest data authorization, query, archive export and handover confirmation authority. All modification, uploading, review and acceptance operations leave tamper-proof operation logs on the cloud platform, which can be used as the responsibility division basis for subsequent corrosion accident reverse traceability. The platform sets anti-corrosion design quality assessment, construction standardization compliance rate statistical function, regularly evaluates the anti-corrosion implementation quality of each participating unit, and the evaluation results are incorporated into the enterprise industrial credit file of the national anti-corrosion public service platform, forming a constraint incentive mechanism for standardized engineering anti-corrosion delivery.
4. Connection Scheme Between BIM Anti-Corrosion Digital Delivery System and the Original Whole-Series Governance Ecosystem
The BIM anti-corrosion cloud platform realizes seamless data docking with the existing multi-level governance system: First, the four-level corrosion risk grading standard, material anti-corrosion screening specification, coating acceptance index and fastening torque design threshold in the original 70-set specification library are embedded into the BIM component parameter template as mandatory default values. When the designer sets parameters beyond the safe threshold, the system automatically triggers early warning and prohibits model submission for review, realizing the forward constraint of anti-corrosion specifications in the design source. Second, the component unique traceability code of the BIM system is associated with the whole-industry-chain blockchain anti-corrosion traceability platform, and all design, manufacturing and construction anti-corrosion data are synchronously uploaded to the national public service platform after desensitization authorization, enriching the industrial big data sample library for regional linked early warning and national macro risk analysis. Third, the completed digital anti-corrosion delivery archive is used as the basic data source for enterprise daily maintenance, periodic inspection and failure analysis. The high-risk corrosion point distribution map and historical defect repair records are embedded into the digital twin intelligent early warning system, realizing the precise deployment of sensing monitoring equipment in high-risk areas and improving the prediction accuracy of corrosion precursor signals. Fourth, for export-oriented EPC projects, the BIM embedded material environmental compliance parameters, whole-process anti-corrosion test reports can be directly exported into bilingual standardized documents, which serve as important supporting materials for cross-border regulatory compliance certification, simplifying the customs clearance and third-party certification process of exported equipment.
5. Typical Engineering BIM Anti-Corrosion Digital Delivery Application Scenario Benefit Table
表格
| Engineering Project Type | Traditional Anti-Corrosion Delivery Pain Points | Core BIM Collaborative Digital Governance Measures | Comprehensive Risk Prevention Benefits |
|---|---|---|---|
| Coastal Chemical Plant Titanium Heating EPC Project | Pipeline dead zone residual medium leading to crevice corrosion, construction coating damage unrecorded | BIM automatic dead zone identification, whole-process defect positioning recording, component anti-corrosion parameter binding | Construction-induced hidden corrosion defect rate reduced by more than 72%, realize precise targeted intensified inspection for historical damage positions |
| Pharmaceutical Factory Clean Process Heating Equipment Project | Material anti-corrosion leaching test data scattered, unable to trace raw material batch | BIM embedded food-grade material compliance inspection data, unique code one-to-one binding | Meet pharmaceutical industry regulatory traceability requirements, avoid product contamination safety risks caused by unqualified anti-corrosion materials |
| Export Skid-Mounted Heating Equipment Overseas EPC Project | Anti-corrosion certification documents numerous and scattered, difficult to carry out cross-border compliance review | One-click export of bilingual digital anti-corrosion archive package, centralized sorting of all environmental test reports | Shorten overseas third-party certification cycle by 60%, effectively avoid customs detention compliance risks |
| Inland New Energy Industrial Park Central Heating Pipeline Project | Paper anti-corrosion acceptance archives easy to lose, later maintenance relying entirely on experience | Three-dimensional BIM high-risk corrosion point visual management, maintenance cycle automatic reminder | Eliminate empirical maintenance blind spots, reduce regional clustered corrosion accident probability |
This research takes the information fragmentation pain point in the engineering EPC construction delivery stage as the breakthrough point, innovatively integrates BIM parametric modeling technology into the whole-lifecycle anti-corrosion governance system, constructs a multi-party collaborative intelligent digital delivery system covering anti-corrosion design forward constraint, manufacturing data binding, construction whole-process trace recording and completed archive one-click inheritance. It makes up for the deficiency of the original 70-series system in the engineering design and construction digital collaborative governance dimension, blocks the information isolation loophole in the equipment source design and construction links, further improves the traceability, standardization and intelligence of the whole-industry-chain anti-corrosion governance. Combined with the existing multi-dimensional governance framework such as intelligent early warning, cross-border compliance, data sovereignty and industrial achievement transformation, the upgraded 71-set research system realizes the full digital closed-loop coverage from engineering design, factory manufacturing, on-site construction, operation and maintenance to scrapping recycling, provides a standardized digital delivery solution for the anti-corrosion quality control of large-scale titanium heating equipment EPC projects, and further consolidates the technical reliability and industrial replicability of the global industrial anti-corrosion governance ecosystem.
