vamseeachanta Cathodic Protection
When to Use
- CP system design (SACP and ICCP)
- Anode calculation and spacing
- Transformer rectifier unit sizing
- Pipeline CP design
- Coating breakdown assessment
- AC/DC interference analysis
- CP monitoring system design
- NACE/ISO/DNV compliance
Related Skills
- structural-analysis - Structural integrity
- mooring-design - Mooring system protection
- fatigue-analysis - Corrosion-fatigue interaction
Package Structure
The CP package lives at digitalmodel/src/digitalmodel/cathodic_protection/:
| Module | Purpose |
|---|---|
__init__.py |
Unified exports from all sub-modules |
api_rp_1632.py |
API RP 16Q32 calculations |
iso_15589_2.py |
ISO 15589-2 pipeline CP |
dnv_rp_b401.py |
DNV-RP-B401 offshore structures |
marine_cp.py |
Multi-zone marine CP — temp/depth current density, calcareous deposits |
marine_structure_cp.py |
Zone-based CP — ClimateRegion enum, anode distribution, retrofit (overlaps marine_cp.py, consolidation tracked in #1702) |
pipeline_cp.py |
Pipeline-specific CP design |
iccp_design.py |
Impressed current CP design |
fuel_system_cp.py |
Fuel system ICCP (FuelPipeSegment, RectifierOutput) |
anode_sizing.py |
Anode mass/geometry calculations |
anode_depletion.py |
Anode consumption tracking |
coating.py |
Coating breakdown factors |
corrosion_rate.py |
Corrosion rate models |
cp_monitoring.py |
CP monitoring systems |
cp_reporting.py |
Report generation |
cp_survey.py |
Survey data processing |
stray_current.py |
AC/DC stray current analysis |
Legacy router: digitalmodel/src/digitalmodel/infrastructure/common/cathodic_protection.py
Tests: digitalmodel/tests/specialized/cathodic_protection/
References
- NACE International Standards
- ISO 15589-2: Cathodic Protection of Offshore Pipelines
- DNV-RP-F103 (2003, 2010): Cathodic Protection of Submarine Pipelines
- DNV-RP-B401 (2005, 2011, 2021): Cathodic Protection Design
- ABS GN Ships 2017 (289): Cathodic Protection of Ships
- ABS GN Offshore Structures 2018 (306): Cathodic Protection of Offshore Structures
- SNAME T&R R-21: Cathodic Protection of Marine Service
Version History
- 1.2.0 (2026-02-20): Added DNV_RP_B401_offshore route; B401-2021 coating categories I–III; zonal current demand; Dwight anode resistance
- 1.1.0 (2026-02-20): Fixed examples to use real CathodicProtection().router(cfg) API; added DNV-RP-F103 to standards table
- 1.0.0 (2025-01-02): Initial release from agents/cathodic-protection-engineer.md
Sub-Skills
- Best Practices
Sub-Skills
- Version Metadata
- [1.2.0] - 2026-02-20 (+2)
- Cathodic Protection Systems (+2)
- Example: Ship Hull (ABS GN Ships 2018) (+3)
- CP System Design Process