MR21551 - Remote Monitoring System Requirements for Cathodic Protection
- Establish Criteria to qualify Remote Monitoring Systems for Cathodic Protection
- Develop Selection Guidelines for Users
- Establish Quality Criteria
- Assist users to define Requirements, e.g. for RQFs
- Assist user to establish Selection Criteria
SP21564 - Standard Practice for Cathodic Protection System for Complex Plant Buried Structures
This standard practice will assist complex plant facility owners with evaluating the effectiveness of cathodic protection of buried structures within congested facilities. CP system performance in complex facilities may be influenced by buried electrical grounding systems, tank foundations, steel reinforcements in heavy concrete foundations, UG pressure vessels inside concrete pits. The standard will assist the operators to evaluate and perform necessary checks to account for strong shielding effects, dissimilar metals effect etc. Providing a standardized approach, testing frequency, acceptance criteria, and recommended actions will assist owners/operators with integrity management decisions.
TR21580 - The Role of Cathodic Protection and Soil Environment in Hydrogen Embrittlement of Susceptible Pipelines
Provide a technical review of the available standards and state-of-the-art research on hydrogen damage mechanisms. This will be used as a basis to develop scientifically based guidance in the application of CP to control corrosion and mitigate the effects of hydrogen damage in susceptible piping.
This will be a collaborative effort with the pending PRCI project MAT-8-3A/PRIME Idea 3545.
SP21583 - Standard Practice for Corrosion Protection of Mounded Bullets
Mounded bullets are located in a soil environment. Corrosion control using cathodic protection is challenging due to the confined space between bullets. This standard covers the establishment of requirements, selection of coating, CP systems, system design guidelines, and operation and maintenance of cathodic protection systems for mounded bullets.
TM21591 - Measurement Techniques Related to Cathodic Protection of Horizontal Directional Drill Pipe Sections
This AMPP International standard test method provides descriptions of the measurement techniques used on horizontal directional drill (HDD) pipe sections to determine whether the HDD pipe sections in different depths, varied from several meters to tens of meters, meet the cathodic protection (CP) criteria or not. This standard test method presents guidelines, procedures, tools, and data treatment for measurements on CP parameters of HDD pipe sections buried at different depths, such as ON-potential, polarized potential, CP current density, as well as corrosion rate. Descriptions of measurement techniques used on non-HDD underground metallic piping can be found in NACE TM0497, NACE SP0104, NACE SP0169, ISO 15589-1 and ISO 15589-2. This standard includes only those measurement techniques related to CP of HDD pipe sections, such as crossing highways, railway, densely populated areas, lake, river, wetlands, and scenic spots.
SP21599 - Addressing Pipeline, Station/Facility and Other Infrastructure Subsurface Metal System Interactions With Copper AC Power Grounding and Neutral Systems
This standard practice describes procedures for determining the presence, extent, and possible mitigation of dissimilar-metal corrosion reactions when the copper metal related to AC power grounding and neutral systems interacts detrimentally with buried or submerged metal structures. It provides procedures for conducting DC structure-to-electrolyte surveys to identify and characterize anodic metal behaviors compared to the copper metal in AC power grounding and neutral systems, almost always acting as cathode in the dissimilar-metal reactions. It will also include procedures for mitigation, which may include use of electrical isolation when practical, improved cathodic protection rectifier grounding when appropriate, and use of de-coupling devices.