As-Built Engineering & Documentation
Accurate Engineering Records for Safe and Reliable Plant Operations
Sindwi Engineers provides comprehensive As-Built Engineering and Documentation Services to ensure that engineering records accurately reflect the final installed condition of facilities, pipelines, equipment, and utility systems.
Our team combines field verification, redline mark-up incorporation, laser scanning technology, and engineering expertise to develop accurate as-built documentation that supports safe operations, maintenance planning, regulatory compliance, plant modifications, and future expansion projects.
We help clients maintain a reliable engineering database by updating drawings, models, and asset information to match actual site conditions.

Our As-Built Engineering Services
Site Verification & Field Surveys
Comprehensive verification of existing facilities to identify differences between design documentation and actual field conditions.
Services Include
- Site Surveys
- Physical Field Verification
- Equipment Verification
- Piping Verification
- Structural Verification
- Utility System Verification
- Field Measurement Collection
- Existing Facility Assessment
Red-Line Markup Incorporation
Updating engineering documentation using approved field modifications and construction markups.
Deliverables
- Red-Line Drawing Review
- Engineering Drawing Updates
- Revision Incorporation
- Design Change Documentation
- Compliance Verification
3D Laser Scanning & Digital Capture
Advanced laser scanning technology for accurate capture of existing plant conditions.
Services Include
- 3D Laser Scanning
- Point Cloud Generation
- Point Cloud Processing
- Asset Digitization
- Existing Facility Mapping
- Brownfield Survey Support
- Digital Twin Development Support
Intelligent 3D Model Updates
Modification and updating of intelligent plant models to reflect current operating conditions.
Platforms Supported
- AVEVA E3D
- SmartPlant 3D (SP3D)
- PDS
- AutoCAD Plant 3D
- Navisworks
- Revit
Services Include
- Model Verification
- Model Updating
- Equipment Integration
- Piping Route Updates
- Structural Modifications
- Utility System Updates
Process Documentation Updates
Ensuring process documentation accurately represents operating facilities.
Deliverables
- Process Flow Diagrams (PFDs)
- Piping & Instrumentation Diagrams (P&IDs)
- Utility Flow Diagrams
- Process Documentation Updates
- Process Design Record Reconciliation
Piping & Mechanical As-Built Documentation
Updating mechanical and piping documentation to match installed systems.
Deliverables
- As-Built Piping Isometrics
- General Arrangement Drawings
- Pipe Support Drawings
- Fabrication Drawings
- Mechanical Equipment Drawings
- Equipment Layout Drawings
- Nozzle Orientation Updates
Electrical & Instrumentation Documentation
Accurate updating of E&I documentation for maintenance and operational reliability.
Deliverables
- Single Line Diagrams (SLD)
- Instrument Loop Diagrams
- Hook-Up Drawings
- Junction Box Layouts
- Cable Routing Drawings
- Control System Documentation
- Instrument Index Updates
- Electrical Layout Drawings
Asset Information Management
Development of complete engineering records for operations and maintenance systems.
Services Include
- Asset Data Collection
- Equipment Registers
- Tag Verification
- Asset Database Updates
- Maintenance System Integration
- Engineering Data Management
Field Discrepancy Resolution
Identification and resolution of differences between original design documents and actual site conditions.
Activities Include
- Gap Analysis
- Design Deviation Identification
- Non-Conformance Documentation
- Engineering Review
- Corrective Documentation Updates
Project Close-Out & Handover Documentation
Preparation of complete documentation packages for project completion and owner handover.
Deliverables
- Final As-Built Drawing Packages
- Engineering Dossiers
- Vendor Documentation Records
- Asset Registers
- Project Close-Out Reports
- Operations & Maintenance Documentation
- Electronic Document Management Packages
Applications
Brownfield Projects
Accurate documentation of existing facilities prior to revamps and modifications.
Plant Expansion Projects
Verification of actual plant conditions before integration of new facilities.
Asset Integrity Programs
Reliable engineering records supporting inspection and maintenance activities.
FPSO & Offshore Facilities
Updating offshore asset documentation to reflect modifications and operational changes.
Regulatory Compliance
Maintaining accurate records to support audits and compliance requirements.
Benefits of Our As-Built Services
- Accurate Engineering Records
- Improved Plant Safety
- Reduced Maintenance Risks
- Better Asset Management
- Reliable Basis for Future Modifications
- Faster Project Execution
- Regulatory Compliance Support
- Enhanced Operational Efficiency
- Complete Digital Documentation
Engineering Records You Can Trust
At Sindwi Engineers, our As-Built Engineering & Documentation Services provide clients with accurate, up-to-date, and fully verified engineering records that support safe operations, efficient maintenance, future expansions, and the long-term reliability of industrial assets.