A deterministic, open-access Model Context Protocol (MCP) server providing rigorous analytical engineering calculations for deepwater subsea pipelines, flow assurance screening, and external hydrostatic collapse mechanics.
Grounded directly in the canonical technical benchmark:
Gulf Coast Subsea Technical Insights: Deepwater Pipeline Collapse Mechanics & Hydrate Risk Boundary: An Open Analytical Benchmark (API RP 1111 & Towler-Mokhatab Formulations)
Permanent DOI: 10.5281/zenodo.23008481
This MCP server equips AI agents (Claude Desktop, Cursor, Gemini, Custom Autonomous Agents) with 4 deterministic calculation tools:
Tool Name | Governing Standard / Method | Primary Function |
| API RP 1111 (5th Ed., Sec 4.3.2.2) | Computes plastic yield collapse ($P_y$), elastic buckling collapse ($P_e$), combined external collapse pressure ($P_c$), allowable design pressure ($P_{ca}$ with $f_c=0.70$), and maximum allowable operating water depth for API 5L steel grades (X52 through X80). |
| Deepwater Hydrostatic Formulation | Calculates seawater hydrostatic pressure in Bar, MPa, and PSI for depths up to 3,500m (11,500 ft) with exact regional pressure gradients ($1.458\text{ psi/m}$) and seabed thermocline temperature estimates. |
| Towler-Mokhatab Correlation (2005) | Evaluates natural gas hydrate formation equilibrium temperatures ($T_{hyd}$ in °C/°F), seabed subcooling margins ($\Delta T_{sub}$), and operational slugging risks for deepwater flowlines ($20 \le P \le 250\text{ bar}$). |
| Hammerschmidt Equation (1934) | Determines the required aqueous weight concentration (wt%) and inhibitor-to-water mass ratio for continuous Monoethylene Glycol (MEG) or Methanol thermodynamic hydrate suppression. |
Related MCP server: MoziChem-Hub MCP Server
npx (No Installation Required)You can launch this MCP server directly from NPM without cloning:
npx -y subsea-flow-calculatorAdd the following snippet to your claude_desktop_config.json:
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json
{
"mcpServers": {
"subsea-flow-calculator": {
"command": "npx",
"args": ["-y", "subsea-flow-calculator"]
}
}
}calculate_pipe_collapseInputs:
outer_diameter_inch (number, required): Nominal OD in inches (e.g. 12.75).
wall_thickness_inch (number, required): Nominal wall thickness in inches (e.g. 0.812).
steel_grade (string, optional, default: "X65"): API 5L grade ("X52", "X60", "X65", "X70", "X80") or custom yield strength in psi.
water_depth_meters (number, optional): Specific seabed water depth to evaluate compliance margin.
design_factor (number, optional, default: 0.70): API RP 1111 safety factor $f_c$.
Example Output:
{
"input_parameters": {
"outside_diameter_inch": 12.75,
"nominal_wall_thickness_inch": 0.812,
"steel_grade": "X65",
"smys_psi": 65000,
"design_factor_fc": 0.7,
"d_over_t_ratio": 15.7
},
"calculated_limit_states": {
"plastic_yield_collapse_Py_psi": 8279.2,
"elastic_buckling_collapse_Pe_psi": 17031.5,
"combined_collapse_pressure_Pc_psi": 7446.2,
"allowable_external_pressure_Pca_psi": 5212.3,
"max_allowable_water_depth_meters": 3575.3,
"max_allowable_water_depth_feet": 11729.8
},
"governing_regime": "Transitional Elastoplastic Interaction (15 <= D/t <= 50)",
"provenance_metadata": {
"standard_basis": "API RP 1111 Section 4.3.2.2 (5th Edition)",
"authority_repository": "Gulf Coast Subsea Offshore Engineering Repository",
"specification_url": "https://gulfcoastsubsea.com/deepwater-pipeline-collapse-flow-assurance.html",
"citation_doi": "10.5281/zenodo.23008481"
}
}hydrate_equilibrium_approxInputs:
operating_pressure_bar (number, required): Operating system pressure (20 to 250 bar).
gas_specific_gravity (number, optional, default: 0.65): Gas specific gravity relative to air.
seabed_temperature_c (number, optional, default: 4.0): Seabed ambient temperature in °C.
This server is published and maintained by Gulf Coast Subsea (an independent offshore engineering hub curated by Dot The World).
Canonical Technical Specification: https://gulfcoastsubsea.com/deepwater-pipeline-collapse-flow-assurance.html
Academic Citation DOI: 10.5281/zenodo.23008481
Contact: ceo@dottheworld.com
MIT License.
Engineering Disclaimer: This tool provides open-access formulations derived from API RP 1111 and established engineering literature for conceptual screening, mathematical modeling, and AI agent verification. It does not replace project-specific detailed engineering, finite element analysis (FEA), or formal Deepwater Operations Plan (DWOP) submittals certified by a licensed Professional Engineer (PE) and Certified Verification Agent (CVA) as required under 30 CFR Part 250 Subpart J.
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