Services · Asset Integrity and Engineering Consulting
Cathodic Protection Services
Pipe-to-soil potential is tracked against the negative 0.85 V to negative 1.20 V band versus Cu/CuSO4, with CIPS, DCVG, Pearson, and conductance attenuation surveys. Design and installation follow NACE SP0169, ISO 15589, and DNV-RP-B401 offshore.
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In brief
TCR Advanced Engineering, Vadodara, the TCR group's asset integrity and engineering consulting company, delivers cathodic protection services across India through its CP Division and a regional office in Bhubaneswar: sacrificial anode and impressed current system design, installation and monitoring, and CIPS, DCVG and Pearson coating surveys for pipeline and city gas distribution operators, to NACE SP0169 and ISO 15589.
Cathodic protection services, from design to monitoring
TCR Advanced's CP Division monitors installed permanent cathodic protection (CP) units at their feeding points to GAIL requirements, confirming that each unit is protecting the pipeline or metallic structure it serves.
The monitoring measures voltage and current at each unit, identifies anything that compromises the CP system, and allows intervention before corrosion protection is lost.
Each inspection ends in a detailed report to the operator. Keeping CP units working is what protects buried and submerged infrastructure against corrosion failure.
The CP Division is led by Chiral Patel, CP Division Lead, with 20+ years of cathodic protection and pipeline integrity experience. J.N. Agarwal (33 years at GAIL, ICorr Level 4 Fellow, AMPP Corrosion Awareness Award 2023, CP4-certified, 40+ years O&G, author of 3 books on CP) sits on the consultant bench supporting the CP Division.
| Capability | Detail |
|---|---|
| Sacrificial anode systems | Design, installation, maintenance per NACE SP0169 |
| Impressed current systems | Design, installation, transformer-rectifier sizing, anode bed configuration |
| Coating survey | Close Interval Potential Survey (CIPS), Direct Current Voltage Gradient (DCVG), Pearson, Conductance Attenuation Test (CAT), casing-and-carrier short |
| Pipe-to-Soil Potential | Tracking against the negative 0.85 V to negative 1.20 V band, referenced to Cu/CuSO4 |
| Cross-pillar integration | Feeds the AiOM-CCP CP module |
The CP Division works to these standards:
- NACE SP0169: control of external corrosion on underground metallic piping.
- NACE SP0102: in-line inspection.
- NACE SP0204: stress corrosion cracking direct assessment.
- NACE SP0206: internal corrosion direct assessment of normally dry natural gas pipelines.
- ISO 15589: cathodic protection of pipeline systems.
- DNV-RP-B401: cathodic protection of offshore structures (2021 update).
Cathodic Protection on Civil Reinforced Concrete
Half-cell potential per ASTM C876-22b maps the corrosion likelihood across reinforced concrete elements. Linear polarisation resistance and macrocell current measurement add quantitative corrosion-rate data. The CP Division designs and installs impressed-current cathodic protection on reinforced-concrete structures.
- Corrosion likelihood: half-cell potential per ASTM C876-22b, mapped across reinforced-concrete elements.
- Corrosion rate: linear polarisation resistance and macrocell current measurement, adding quantitative data.
- Delivery: the CP Division designs and installs impressed-current cathodic protection on reinforced concrete.
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Frequently asked questions
Which coating survey techniques does TCR run on buried pipelines?
The CP Division runs Close Interval Potential Survey, Direct Current Voltage Gradient, Pearson survey, Conductance Attenuation Test and casing-and-carrier short detection. These surveys locate coating defects and, with voltage and current measurements at feeding points, verify that installed cathodic protection units are performing, reported to the pipeline operator in detail.
What pipe-to-soil potential band does TCR track?
TCR tracks pipe-to-soil potential against the negative 0.85 V to negative 1.20 V band measured against a copper/copper sulphate reference electrode, per NACE SP0169. Monitoring voltage and current levels at feeding points confirms that installed permanent cathodic protection units are functioning and allows timely intervention before corrosion damage develops.
Does TCR provide cathodic protection for reinforced concrete?
Yes. Half-cell potential mapping per ASTM C876-22b establishes corrosion likelihood across reinforced concrete elements, while linear polarisation resistance and macrocell current measurement add quantitative corrosion-rate data. The CP Division designs and installs impressed-current cathodic protection systems on reinforced-concrete structures based on these measurements.
Which standards govern TCR's cathodic protection work?
The practice works to NACE SP0169 for control of external corrosion on underground metallic piping, NACE SP0102 for in-line inspection, NACE SP0204 for stress corrosion cracking direct assessment, NACE SP0206 for internal corrosion direct assessment of normally dry natural gas pipelines, ISO 15589, and DNV-RP-B401 (2021 update) for cathodic protection of offshore structures.
Does TCR design impressed current cathodic protection systems?
Yes. TCR Advanced Engineering's CP Division designs and installs impressed current cathodic protection systems, including transformer-rectifier sizing and anode bed configuration, and designs, installs and maintains sacrificial anode systems to NACE SP0169. It also designs and installs impressed current cathodic protection on reinforced-concrete structures, based on half-cell potential and corrosion-rate measurements.
Which TCR company delivers cathodic protection services?
Cathodic protection services are delivered by TCR Advanced Engineering Pvt. Ltd., Vadodara, a TCR group company, through its CP Division led by Chiral Patel. The division runs from Vadodara with a regional office in Bhubaneswar and offers cathodic protection services across India to cross-country pipeline and city gas distribution operators.