Complete As-Built Site Drawing Package Services

Accurate as-built documentation is essential for safe operations, brownfield expansions, and long-term asset lifecycle planning. Many oil and gas facilities operate with legacy drawings that no longer reflect actual field conditions due to undocumented modifications, tie-ins, or equipment replacements. A structured as-built site drawing package restores technical accuracy and establishes a reliable engineering foundation for future development.

Comprehensive as-building involves consolidating existing digital records, redline markups, historical revisions, and verified field data into a validated documentation set. This process ensures that P&IDs, plot plans, equipment layouts, structural drawings, and utility diagrams reflect current operating conditions rather than outdated design intent.

Field Verification & Data Consolidation

Developing a complete as-built package requires disciplined data validation and cross-referencing of multiple information sources. Our process typically includes:

• Field verification of piping and instrumentation diagrams (P&IDs)
• Plot plan validation and equipment location confirmation
• Structural and mechanical drawing updates
• Utility routing and tie-in documentation
• Redline drawing consolidation and revision control
• Integration of digital records into updated CAD models

Where dimensional uncertainty exists, high-resolution site data captured through Laser Scanning can be incorporated to validate geometry and eliminate measurement discrepancies.

This structured verification process strengthens engineering accuracy and reduces risk during facility upgrades or modification projects.

Engineering Alignment & Lifecycle Planning

A validated as-built drawing package is more than documentation — it is a strategic asset for capital planning, regulatory compliance, and safe operating procedures.

PLC programming and industrial automation for oil & gas and industrial facilities across North America, including control systems and SCADA integration. Accurate engineering documentation supports:

• Brownfield expansion planning
• Equipment replacement projects
• Management of Change (MOC) reviews
• Capacity studies and debottlenecking
• Asset integrity and inspection programs

By aligning site documentation with real-world conditions, project teams avoid costly field rework, unexpected clashes, and construction delays.

As part of disciplined engineering workflows applied by Tundra Engineering, as-built documentation integrates seamlessly into broader EPCM execution strategies and long-term facility management planning.

Documentation Control & Ongoing Updates

Facilities evolve over time. A complete as-built site drawing package establishes the baseline required to maintain accurate documentation throughout future modifications.

Our structured documentation control approach includes:

• Revision tracking and version control
• Digital drawing archiving
• Standardized drafting protocols
• Coordination with engineering change processes

This ensures that facility documentation remains current, defensible, and aligned with operational reality.