We conducted a comprehensive mooring analysis for a pair of concrete barges involved in bridge construction between two islands. The barges’ mooring system was designed to withstand various locations during the construction process. Using Orcaflex software, we performed time-domain mooring analysis to identify critical positions and determine the optimal mooring pattern. Through multiple iterations, we ensured a robust solution that met the project requirements.
Design and Assessment of Subsea Trenching Tool
Vedam designed and engineered a specialized tool for cable burial on the seabed, tailored to the unique needs of a wind farm development. Unlike traditional subsea cable ploughs, we developed an innovative over-the-side burial stinger equipped with a water jetting system and blade section. This tool was designed to operate at depths ranging from 5 to 15 meters and achieved a trench depth of 2.5 meters to ensure the cable’s protection and stability. Using advanced software like Ansys, we meticulously assessed the tool’s performance and structural integrity, leading to the creation of production-specific drawings and design deliverables.
Mooring and Structural Analysis of a Fish Cage
We completed a comprehensive mooring and structural assessment for a marine fish cage aquaculture system, addressing the challenges posed by offshore environments. Utilizing advanced finite element modeling (FEA) and hydrodynamic analysis via OrcaFlex, we evaluated the floating collar, HDPE pipes, mooring system, and sinker structure under various environmental conditions. Our design included a four-anchor mooring system, compliant with NS9415 guidelines, ensuring stability and resilience. The analysis covered both global and local stress points, ensuring the cage’s structural integrity and reliability, even under extreme conditions.
Mooring and Stability Assessment of a Navigation Buoy
We completed a comprehensive assessment of the Steel Buoy’s stability and mooring for navigation. Our team designed an anchor pattern and mooring system that accounted for environmental influences on mooring lines connected to a sinker. The stability assessment focused on the buoy’s center of gravity, metacentric height, and response to external forces to ensure it remains upright and reliable. Our work included optimizing the mooring system, anchor type, and chain capacity, utilizing a dynamic coupled mooring analysis in the time domain to align with International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA) guidelines.
Mooring Analysis for a Turret-moored FPSO
Vedam completed a comprehensive mooring study for an FPSO destined for the Tamil Nadu coast, focusing on optimizing the turret-mooring system to withstand extreme 100 RP cyclonic conditions. Using Orcaflex, we evaluated various operational and environmental scenarios, ensuring the mooring system adhered to DNV-OS-301 guidelines and met both client specifications and classification requirements.
Berthing Feasibility Analysis and MEG4 Compliance Check
We conducted a thorough Berthing Feasibility Analysis and MEG4 Compliance Check for a client, aligning with the latest OCIMF Mooring Equipment Guidelines (MEG4). Our study involved detailed SDMBL calculations using OPTIMOOR, ensuring that mooring equipment and practices meet MEG4 standards. We assessed berthing configurations to optimize safety and performance, considering specific forces encountered during berthing. By leveraging OPTIMOOR and adhering to MEG4 guidelines, we provided comprehensive insights and recommendations to enhance mooring system reliability and compliance.
FPSO Life Extension and Fatigue Design Assessment
Vedam completed a comprehensive FPSO Life Extension and Fatigue Design Assessment to evaluate and extend the operational life of an FPSO originally designed for 15 years of service. This project, in line with Lloyd’s Register guidance, involved both Simplified Spectral Fatigue and Full Spectral Direct Calculation procedures to assess structural integrity and fatigue life. By identifying critical areas and recommending necessary modifications, we ensured the FPSO could safely extend its operational lifespan by approximately 7 years, optimizing economic benefits and maintaining safety standards.
Marine Lifting and Station Keeping Analysis
We conducted a detailed Lifting, Stability, and Seakeeping Analysis for a heavy lift crane vessel designed to handle payloads of over 1200 tons in offshore environments. Our study focused on the vessel’s performance in dynamic sea conditions, including mooring, stability, and dynamic lifting analyses. We assessed the vessel’s ability to safely execute lifting operations under varying sea states, ensuring stability and optimizing crane motion. This comprehensive analysis supports the safe and efficient execution of offshore lifting tasks, enhancing overall project efficiency and safeguarding equipment and personnel.
Mooring Analysis of an FPSO
Vedam successfully completed a comprehensive mooring analysis and optimization for an FPSO, utilizing Ansys AQWA and Orcaflex. Our scope included developing a hydrodynamic model generating RAOs and conducting a detailed mooring analysis for various conditions, including survival during tropical storms, maximum operating with thruster assistance, tandem offloading with a shuttle tanker, and a one-line damage case. We also performed a mooring fatigue assessment to ensure the system’s durability and compliance with Classification Society and Marine Warranty Services (MWS) standards. This thorough analysis facilitated the procurement of mooring equipment and optimized the FPSO’s mooring system for safe and efficient offshore operations.
Mooring and Anchor System Analysis of an SPM Installation Barge
We completed a detailed mooring and anchoring system analysis for an SPM installation barge. The project involved performing intact mooring analysis for an 8-point mooring system at two locations, considering different barge positions and anchor patterns. Our comprehensive approach included directional analysis with environmental parameters varying every 30 degrees, ensuring accuracy in diverse conditions. Despite the exhaustive scope, our team met the schedule and delivered timely, high-quality results, confirming the barge’s mooring system stability and performance.
Mooring and Stability Analysis of Crane Barge Used for Coastal Constructions
Vedam conducted a comprehensive stability and mooring analysis for a Crane Barge used in the construction of an Approach Bridge and Breakwater. Our scope included evaluating the barge’s stability and ballasting needs to ensure it could handle environmental conditions and operational demands at both work fronts. We designed a mooring system to minimize barge excursions, critical for the precise construction of the Approach Bridge. The mooring arrangement met site requirements effectively, and all project deliverables were provided to the client on schedule.
FE Analysis for Crack Investigation of an IWO Corrugated Bulkhead
We conducted a detailed Finite Element Analysis (FEA) of a chemical tanker to investigate inter-tank leakage caused by weldment cracks in the corrugated bulkhead. Our process involved fine mesh analysis of the local area, generating load cases, and applying pressure to simulate stress responses. By identifying hotspots at critical locations, we pinpointed the root causes of the cracks. We proposed structural modifications to address these issues and recommended permanent solutions to prevent future crack initiation.
Stability and Mooring Analysis for Steel Navigation Buoys
Vedam completed a stability and mooring analysis project for steel navigation buoys of various dimensions. Our team developed 3D models using Foran and conducted stability assessments in line with industry standards. Utilizing Orcaflex, we performed a time-domain mooring analysis to determine the mooring system’s capacity, including anchor requirements, chain size, and length. The project concluded with the creation of a detailed Mooring Arrangement Drawing, ensuring compliance with IALA guidelines, and was delivered to the client on schedule.
Neo Panama Mooring Fitting Modification
We executed a project to upgrade vessels for compliance with the updated “Neo Panama” mooring requirements following the Panama Canal expansion. We assessed the existing ship arrangements, prepared optimized mooring plans with minimal modifications, and managed the approval process with the Panama Canal Authority (ACP). Our cost-effective approach focused on reinforcing existing fittings, ensuring safe and efficient canal transit for larger vessels while keeping retrofit costs low.
Local Finite Element Analysis for FPSO Engine Room Integrity
Vedam completed a precision-driven Local Finite Element Analysis for the Engine Room of an FPSO, addressing structural contractions identified by the client. Using Ansys (Mechanical), we conducted a targeted assessment of the corroded areas to accurately derive the structural strength. Our approach ensured optimized structural integrity with tailored engineering solutions, reinforcing the FPSO’s performance.
Local Finite Element Analysis for FPSO Engine Room Integrity
In our recent project, we utilized Local Finite Element Analysis (FEA) to assess the structural integrity of the Engine Room (E/R) on an FPSO. Following the detection of structural contractions, we employed Ansys (Mechanical) to perform a detailed analysis focusing on localized corrosion and anomalies. Our approach included precise FEM analysis to identify critical areas and develop tailored engineering solutions to enhance structural strength and integrity.