Orcaflex Code Check

Verify OrcaFlex model results against industry standards (DNV, API, ISO). Perform capacity checks, safety factor verification, and compliance reporting for offshore structures.

vamseeachanta 6a89a52 5.3 KB Updated Sep 17, 2026

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[!WARNING] Part of the Python API documented below does not exist in digitalmodel. These snippets are a specification of intended capability, not runnable code. Do not import them, and do not report a result obtained by pretending they ran.

Absent as of this revision:

digitalmodel.infrastructure.common.standards_lookup.StandardsLookup

digitalmodel.structural.structural_analysis.capacity.CapacityChecker

The surrounding engineering content — method, conventions, what to watch for — is unaffected and remains usable. Tracked in aceengineer-strategy#267.

Orcaflex Code Check

Version Metadata

version: 1.0.0
python_min_version: '3.10'
dependencies:
  orcaflex-modeling: '>=2.0.0,<3.0.0'
  structural-analysis: '>=1.0.0,<2.0.0'
orcaflex_version: '>=11.0'
compatibility:
  tested_python:
  - '3.10'
  - '3.11'
  - '3.12'
  - '3.13'
  os:
  - Windows
  - Linux
  - macOS

Changelog

[1.0.0] - 2026-01-17

Added:

Initial release with standards compliance checking
Mooring line capacity verification
Safety factor calculation
Multi-standard support (DNV, API, ISO)

When to Use

Verify mooring line tensions against MBL limits
Check riser stress against allowable
Validate safety factors per design codes
Generate compliance reports for certification
Design verification before fabrication
Audit existing designs against current standards

Supported Standards

Mooring Systems

Standard	Application	Key Checks
API RP 2SK	Stationkeeping	Safety factors, line capacity
DNV-OS-E301	Position mooring	Tension limits, fatigue
ISO 19901-7	Mooring systems	Capacity, redundancy

Risers

Standard	Application	Key Checks
API RP 2RD	Riser design	Stress, fatigue
DNV-OS-F201	Dynamic risers	Stress, VIV
API STD 2RD	Design of risers	Combined loading

Pipelines

Standard	Application	Key Checks
DNV-OS-F101	Submarine pipelines	Wall thickness, buckling
API RP 1111	Pipeline design	Pressure containment

Python API

Mooring Safety Factor Check

from digitalmodel.structural.structural_analysis.capacity import CapacityChecker

def check_mooring_safety_factors(
    max_tensions: dict,
    mbl_values: dict,
    standard: str = "API_RP_2SK"
) -> dict:
    """
    Check mooring line tensions against MBL limits.

*See sub-skills for full details.*
### Riser Stress Check

```python
from digitalmodel.structural.structural_analysis.capacity import CapacityChecker
import math

def check_riser_stress(
    max_tension: float,
    max_bend_moment: float,
    internal_pressure: float,
    external_pressure: float,
    od: float,

*See sub-skills for full details.*
### Standards Lookup

```python
from digitalmodel.infrastructure.common.standards_lookup import StandardsLookup

# Initialize lookup
lookup = StandardsLookup()

# Search for relevant standards
results = lookup.search("mooring design")

for standard in results:

*See sub-skills for full details.*
### Generate Compliance Report

```python
def generate_compliance_report(
    check_results: dict,
    output_path: str,
    project_info: dict
) -> str:
    """Generate HTML compliance report."""

    html_content = f"""
    <!DOCTYPE html>

*See sub-skills for full details.*

## Safety Factors Reference

### API RP 2SK (2015)

| Condition | Analysis | Safety Factor |
|-----------|----------|---------------|
| Intact | Quasi-static | 1.67 |
| Intact | Dynamic | 1.82 |
| Damaged | Quasi-static | 1.25 |
| Damaged | Dynamic | 1.43 |
### DNV-OS-E301

| Condition | Consequence Class 1 | Consequence Class 2 |
|-----------|---------------------|---------------------|
| ULS Intact | 2.20 | 2.50 |
| ULS Damaged | 1.50 | 1.65 |
| ALS | 1.00 | 1.10 |
### ISO 19901-7

| Condition | Category 1 | Category 2 |
|-----------|------------|------------|
| Intact | 1.67 | 2.00 |
| Damaged | 1.25 | 1.50 |

## Related Skills

- [orcaflex-post-processing](../orcaflex-post-processing/SKILL.md) - Extract results
- [orcaflex-extreme-analysis](../orcaflex-extreme-analysis/SKILL.md) - Find design loads
- [structural-analysis](../structural-analysis/SKILL.md) - Structural capacity checks
- [fatigue-analysis](../fatigue-analysis/SKILL.md) - Fatigue code checks

## References

- API RP 2SK: Design and Analysis of Stationkeeping Systems
- DNV-OS-E301: Position Mooring
- DNV-OS-F201: Dynamic Risers
- ISO 19901-7: Stationkeeping Systems for Floating Offshore Structures
- Source: `src/digitalmodel/infrastructure/common/standards_lookup.py`
- Source: `src/digitalmodel/structural/structural_analysis/capacity.py`

## Sub-Skills

- [Mooring Code Check (+1)](mooring-code-check/SKILL.md)
- [Before Code Check (+2)](before-code-check/SKILL.md)

## Sub-Skills

- [Error Handling](error-handling/SKILL.md)

---name: orcaflex-code-check-2description: Verify OrcaFlex model results against industry standards (DNV, API, ISO). Perform capacity checks, safety factor verification, and compliance reporting for offshore structures.---> [!WARNING]> **Part of the Python API documented below does not exist in> `digitalmodel`.** These snippets are a *specification* of intended> capability, not runnable code. Do not import them, and do not report> a result obtained by pretending they ran.>> Absent as of this revision:> - `digitalmodel.infrastructure.common.standards_lookup.StandardsLookup`> - `digitalmodel.structural.structural_analysis.capacity.CapacityChecker`>> The surrounding engineering content — method, conventions, what to> watch for — is unaffected and remains usable. Tracked in> aceengineer-strategy#267.# Orcaflex Code Check## Version Metadata```yamlversion: 1.0.0python_min_version: '3.10'dependencies: orcaflex-modeling: '>=2.0.0,<3.0.0' structural-analysis: '>=1.0.0,<2.0.0'orcaflex_version: '>=11.0'compatibility: tested_python: - '3.10' - '3.11' - '3.12' - '3.13' os: - Windows - Linux - macOS```## Changelog### [1.0.0] - 2026-01-17**Added:**- Initial release with standards compliance checking- Mooring line capacity verification- Safety factor calculation- Multi-standard support (DNV, API, ISO)## When to Use- Verify mooring line tensions against MBL limits- Check riser stress against allowable- Validate safety factors per design codes- Generate compliance reports for certification- Design verification before fabrication- Audit existing designs against current standards## Supported Standards### Mooring Systems| Standard | Application | Key Checks ||----------|-------------|------------|| **API RP 2SK** | Stationkeeping | Safety factors, line capacity || **DNV-OS-E301** | Position mooring | Tension limits, fatigue || **ISO 19901-7** | Mooring systems | Capacity, redundancy |### Risers| Standard | Application | Key Checks ||----------|-------------|------------|| **API RP 2RD** | Riser design | Stress, fatigue || **DNV-OS-F201** | Dynamic risers | Stress, VIV || **API STD 2RD** | Design of risers | Combined loading |### Pipelines| Standard | Application | Key Checks ||----------|-------------|------------|| **DNV-OS-F101** | Submarine pipelines | Wall thickness, buckling || **API RP 1111** | Pipeline design | Pressure containment |## Python API### Mooring Safety Factor Check```pythonfrom digitalmodel.structural.structural_analysis.capacity import CapacityCheckerdef check_mooring_safety_factors( max_tensions: dict, mbl_values: dict, standard: str = "API_RP_2SK") -> dict: """ Check mooring line tensions against MBL limits.*See sub-skills for full details.*### Riser Stress Check```pythonfrom digitalmodel.structural.structural_analysis.capacity import CapacityCheckerimport mathdef check_riser_stress( max_tension: float, max_bend_moment: float, internal_pressure: float, external_pressure: float, od: float,*See sub-skills for full details.*### Standards Lookup```pythonfrom digitalmodel.infrastructure.common.standards_lookup import StandardsLookup# Initialize lookuplookup = StandardsLookup()# Search for relevant standardsresults = lookup.search("mooring design")for standard in results:*See sub-skills for full details.*### Generate Compliance Report```pythondef generate_compliance_report( check_results: dict, output_path: str, project_info: dict) -> str: """Generate HTML compliance report.""" html_content = f""" <!DOCTYPE html>*See sub-skills for full details.*## Safety Factors Reference### API RP 2SK (2015)| Condition | Analysis | Safety Factor ||-----------|----------|---------------|| Intact | Quasi-static | 1.67 || Intact | Dynamic | 1.82 || Damaged | Quasi-static | 1.25 || Damaged | Dynamic | 1.43 |### DNV-OS-E301| Condition | Consequence Class 1 | Consequence Class 2 ||-----------|---------------------|---------------------|| ULS Intact | 2.20 | 2.50 || ULS Damaged | 1.50 | 1.65 || ALS | 1.00 | 1.10 |### ISO 19901-7| Condition | Category 1 | Category 2 ||-----------|------------|------------|| Intact | 1.67 | 2.00 || Damaged | 1.25 | 1.50 |## Related Skills- [orcaflex-post-processing](../orcaflex-post-processing/SKILL.md) - Extract results- [orcaflex-extreme-analysis](../orcaflex-extreme-analysis/SKILL.md) - Find design loads- [structural-analysis](../structural-analysis/SKILL.md) - Structural capacity checks- [fatigue-analysis](../fatigue-analysis/SKILL.md) - Fatigue code checks## References- API RP 2SK: Design and Analysis of Stationkeeping Systems- DNV-OS-E301: Position Mooring- DNV-OS-F201: Dynamic Risers- ISO 19901-7: Stationkeeping Systems for Floating Offshore Structures- Source: `src/digitalmodel/infrastructure/common/standards_lookup.py`- Source: `src/digitalmodel/structural/structural_analysis/capacity.py`## Sub-Skills- [Mooring Code Check (+1)](mooring-code-check/SKILL.md)- [Before Code Check (+2)](before-code-check/SKILL.md)## Sub-Skills- [Error Handling](error-handling/SKILL.md)

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