ADNOC intends to install Deluge Skids for the ongoing project of “Buhasa Firewater Network Replacement”. ADNOC awarded the project to M/s Progetti Europa & Global (PEG) &Equilibrium Engineering Consultancy. M/s Progetti Europa & Global (PEG) invited vendors and awarded the Contract for installation of 9 Deluge Skids to M/s TYCO Fire & Security UAE LLC. Structural and Piping stability analysis of the deluge skids were performed by Elixir Engineering for TYCO Fire & Security UAE LLC.
Scope of Work for Engineering Studies:
- To perform Piping Stress Analysis
- To perform Structural design calculation and GA drawing modification
- To perform Fusible Loop Calculation
Execution Methodology:
- Review of P&ID and Preliminary GA drawing
- Performing fusible loop calculation and determining the Orifice size and Instrument gas requirement based on the deluge valve actuation
- Review of Tie-in Schedule and Material Specifications
- Review of Piping material specification and Structural material specification
- Preparation of input requirement sheet to collect connecting pipe nozzle loads from Skid battery limit
- Review and collection of data from connecting pipe isometrics up to first Anchor point
- Pipe modelling as per provided preliminary GA drawing in CAESAR II Software
- Definition of fluid and material properties as per project specification
- Definition of External load conditions (Wind load and Seismic parameters) as per project design specification
- Definition of Support type and support details
- Performing the Stress analysis for Various load conditions (Thermal load, Sustained Load, Occasional Load and Transportation load) as per project design specification and Stress analysis basis
- Validation of pipe load values in all support locations and node points
- Validation of deflection and Pipe stress values within allowable limit
- Finalizing the first anchor point, based on the connecting nozzle loads inside and outside of the Skid
- If stress and deflection limits are exceeded, the analysis will be re-performed for suitable Pipe Support and routing arrangements
- If all stress and load values are within the limit, the Stress summary, Restraint summary with Input Echo are extracted and submitted to client
- The necessary changes in GA drawing with respect to piping and Pipe support arrangements will be updated
- Piping loads and other components load values (Empty, Operating and Test) are collected from other teams to check integrity of Structural arrangements
- Modelling of Structural members as per provided GA drawing in STAAD Pro Software.
- Definition of new and existing Piping loads (Axial, Vertical & Friction loads) in all support locations
- Definition of other components load on the specified structural locations
- Definition of External load conditions (Wind load, Seismic parameters) as per project design specification
- Performing structural analysis and check the results for deflection, torsion and other induced stress values
- Based on the results, additional recommendation to stabilize the structural arrangement for its design life performance. (i.e., Member modification, Wear plate and additional bracing, etc.)
- Performing Lifting lug calculation and analysis
- Determining Shackle and lifting philosophy
- Performing Anchor bolt design and analysis
- Preparation of complete report with Results summary and Software results for Stress and Structural analysis
- Submission of GA drawing based on the study recommendations.
Deliverables:
- Detailed Piping Stress Analysis Report
- Detailed Structural Design Calculation Report
- Piping Stress Isometric drawings
- Structural and Piping GA Drawings with recommendations
