Project Background:
ADNOC intends to upgrade the electrical drive systems of Compressor Gas 91/92C101 and awarded the “Upgrade of Electrical Drive Systems of Gas Compressor 91/92C101 – Habshan-0” EPC contract to M/s Control & Application Emirates (CAE). The project scope includes the installation of a deluge valve network tied into the existing firewater network. M/s CAE invited vendors and awarded the subcontract for the installation of the deluge valve and piping network at the gas compressor station to M/s Tyco Fire and Security UAE. Elixir Engineering was engaged to perform the structural and piping stability analysis of the deluge network for Tyco Fire and Security UAE.
Scope of Work for Engineering Studies:
- Piping Stress Analysis
- Structural Design Calculation and GA Drawing Modification
Execution Methodology
Review of Key Documents:
- P&ID and preliminary GA drawings
- Tie-in schedule and material specifications
- Piping and structural material specifications
Preparation of Input Requirement Sheet:
- Collect connecting pipe nozzle loads
Data Review:
- Collection of data from connecting pipe isometrics up to the first anchor point
Piping Stress Analysis:
- Pipe modeling in CAESAR II based on preliminary GA drawings
- Definition of fluid and material properties per project specifications
- Definition of external load conditions (wind load, seismic parameters) per project design specifications
- Definition of support types and details
- Stress analysis for various load conditions (thermal load, sustained load, occasional load) per project specifications and stress analysis basis
- Validation of pipe load values at all support locations and node points
- Validation of deflection and pipe stress values within allowable limits
- Finalization of the first anchor point based on connecting nozzle loads near the deluge valve
- Reanalysis for suitable pipe support and routing arrangements if stress and deflection limits are exceeded
- Submission of stress summary, restraint summary, and input echo to the client if values are within limits
- Updates to GA drawings regarding piping and pipe support arrangements
Structural Analysis:
- Modeling of structural members in STAAD Pro based on GA drawings
- Definition of new and existing piping loads (axial, vertical, friction) at all support locations
- Definition of external load conditions (wind load, seismic parameters) as per project design specifications
- Performing structural analysis and checking results for deflection, torsion, and induced stress values
- Providing recommendations to stabilize the structural arrangement for design life performance (e.g., member modification, wear plates, additional bracing)
- Performing anchor bolt design and analysis
Report Preparation:
- Complete report with results summary and software results for stress and structural analysis
- Submission of GA drawing based on study recommendations
Deliverables
- Detailed Piping Stress Analysis Report
- Detailed Structural Design Calculation Report
- Piping GA Drawing
- Piping Stress Isometric Drawings
