A pipeline failure or a CGD network defect is not just a cost problem — it is a safety and regulatory problem. That is why independent inspection is not optional in this sector; for much of India’s oil and gas infrastructure, it is mandated by law.
TNV Inspection Division provides UAF-accredited third party inspection services for oil and gas infrastructure across India, under ISO/IEC 17020:2012 (Accreditation No. 5241222IB04). As a Type A inspection body, we hold no commercial stake in the pipeline operator, EPC contractor, or equipment supplier. Our inspectors verify materials, welds, installation, and testing against the applicable technical standards.
We work with pipeline operators, city gas distribution (CGD) licensees, EPC contractors, and equipment suppliers across India’s oil and gas sector.
Verify our accreditation at any time: certificate.tnvib.com
What is Oil and Gas Inspection?
Oil and gas inspection is the independent verification of materials, welding, installation, and testing of pipelines, CGD networks, LPG storage facilities, and related infrastructure against applicable technical codes and regulatory requirements.
Given the safety-critical nature of this infrastructure, inspection in this sector is typically stage-wise rather than a single check, covering:
- Material verification — confirming pipe, fittings, and valve materials meet specified grades and certifications
- Welding inspection and NDT — ultrasonic testing (UT), radiographic testing (RT), and magnetic particle inspection (MPI) of pipeline welds
- Coating and cathodic protection inspection — verifying external coating quality and cathodic protection system installation for corrosion prevention
- Hydrostatic and pressure testing — witnessing pressure tests to confirm pipeline and vessel integrity
- Installation and trenching inspection — verifying pipe-laying depth, bedding, backfill, and route compliance
- Commissioning support — inspection at final testing and commissioning stages before the system goes into service
Why Oil and Gas Inspection is Critical in India
- PNGRB Mandates Third Party Inspection The Petroleum and Natural Gas Regulatory Board (PNGRB) requires third party inspection for natural gas pipelines, city gas distribution networks, and LPG storage infrastructure as part of its technical standards and Emergency Response and Disaster Management Plan (ERDMP) framework. This is not a discretionary quality step — it is a regulatory expectation tied to safe operation of the network.
- India’s CGD Network is Expanding Rapidly As city gas distribution rollout continues across new geographical areas under PNGRB licensing rounds, the volume of pipeline construction requiring stage-wise inspection has grown substantially. Consistent, qualified inspection capacity is essential to keep pace with this expansion without compromising safety.
- Pipeline Failures Carry Severe Consequences A weld defect or coating failure that goes undetected can lead to leaks, corrosion failures, or safety incidents years after construction. Inspection at the construction stage is far cheaper and safer than dealing with failures on a buried, in-service pipeline.
- Operators Need a Documented, Independent Record Whether for regulatory reporting, insurance purposes, or internal quality assurance, operators need an independent, dated record showing that construction met specification at each stage — something self-certification by the EPC contractor cannot provide with the same credibility.
TNV Oil and Gas Inspection Services
- Pipeline Material and Weld Inspection Verification of pipe, fitting, and valve material certificates, combined with weld inspection using UT, RT, and MPI methods against relevant piping codes.
- CGD Network Construction Inspection Stage-wise inspection of city gas distribution network construction, covering pipe-laying, welding, coating, and testing milestones from trenching through to commissioning.
- LPG Storage and Handling Facility Inspection Inspection of LPG storage tanks, bottling plant equipment, and handling infrastructure against applicable safety and technical standards.
- Coating and Cathodic Protection Inspection Verification of external pipeline coating application and cathodic protection system installation to confirm corrosion protection measures are correctly in place.
- Hydrostatic and Pressure Test Witnessing Independent witnessing of hydrostatic and pneumatic pressure testing to confirm pipeline and vessel integrity before commissioning.
- Emergency Response and Disaster Management Plan (ERDMP) Support Inspection support aligned with PNGRB’s ERDMP framework, helping operators demonstrate infrastructure readiness and compliance documentation.
Regions We Serve for Oil and Gas Inspection
TNV provides oil and gas inspection services across India’s major hydrocarbon and CGD activity zones, with strong active coverage in:
- Gujarat — pipeline and CGD network construction across the state’s extensive gas distribution infrastructure
- Uttar Pradesh — CGD rollout and pipeline projects across the state, supported by our Lucknow head office
- Rajasthan — pipeline infrastructure supporting the state’s expanding gas distribution network
- Maharashtra — CGD and industrial gas pipeline projects
- Assam — upstream and midstream oil and gas infrastructure inspection
For projects in other states, contact us directly — we mobilise inspectors across India for oil and gas assignments.
Our Oil and Gas Inspection Process
- Step 1 — Scope and Standards Confirmation You share project drawings, technical specifications, and applicable PNGRB or piping code requirements. We confirm scope and provide a cost estimate.
- Step 2 — Inspector and NDT Resource Assignment We assign inspectors and NDT technicians experienced in pipeline and CGD infrastructure inspection.
- Step 3 — Stage-wise Site Inspection Our inspectors carry out inspection at each construction milestone — material receipt, welding, coating, trenching, testing, and commissioning — verifying conformance at every stage.
- Step 4 — Inspection and Test Reports You receive detailed reports for each milestone, including findings, NDT results, photographic evidence, and any non-conformances identified.
- Step 5 — Follow-Up and Closeout Verification Where non-conformances are found, we support corrective action verification and re-inspection before the milestone is signed off.
Why Choose TNV for Oil and Gas Inspection in India
- UAF Accreditation — Internationally Recognised TNV Global Limited is accredited by the United Accreditation Foundation (UAF), an IAF MLA signatory and APAC MRA signatory. Accreditation No. 5241222IB04, valid through December 2028.
- Type A Independence TNV has no financial relationship with pipeline operators, EPC contractors, or equipment suppliers in this sector. Our findings are not shaped by commercial pressure from any party.
- Specialised NDT and Welding Inspection Capability Our inspectors and NDT technicians are equipped to handle the welding and testing verification that pipeline and CGD infrastructure requires.
- Stage-wise Coverage for Long Construction Timelines We are structured to inspect at every construction milestone across multi-month or multi-year pipeline and CGD build-out projects, not just at final handover.
- Trusted by Established Indian Organisations Our client base includes IRCTC, Adani Wilmar, Patanjali Ayurved, and ICAR, reflecting a track record across regulated, safety-conscious Indian sectors.
- Verifiable Accreditation Our accreditation status can be verified at any time at certificate.tnvib.com.
Request an Oil & Gas Inspection Quote in India
Tell us about your pipeline, CGD, or storage project and applicable standards. We will respond within one business day with a scope confirmation and cost estimate.
Email: info@tnvib.com
Website: www.tnvib.com
Head Office: TNV House, B-1/19/69, Sector-K, Aliganj, Lucknow, Uttar Pradesh 226204, India
Frequently Asked Questions
Is third party inspection mandatory for oil and gas pipelines in India?
Yes. The Petroleum and Natural Gas Regulatory Board (PNGRB) mandates third party inspection for natural gas pipelines, city gas distribution (CGD) networks, and related infrastructure under its technical standards and Emergency Response and Disaster Management Plan (ERDMP) requirements.
What does TNV inspect in oil and gas projects?
TNV inspects pipeline materials and welds, CGD network components, LPG storage tanks, valves and fittings, coating and cathodic protection systems, and stage-wise construction milestones against PNGRB technical standards and applicable codes.
Does TNV inspect CGD network construction?
Yes. TNV provides stage-wise inspection for city gas distribution (CGD) network construction, covering pipeline laying, welding, coating, testing, and commissioning milestones.
How much does oil and gas inspection cost in India?
Cost depends on the scope of work, project type, site location, and whether NDT or specialised testing is required. Contact us at info@tnvib.com for a specific quote — initial enquiries are free.
Is TNV's inspection recognised for PNGRB compliance purposes?
TNV is a UAF-accredited Type A inspection body under ISO/IEC 17020:2012, and our reports document independent, standards-based inspection findings that operators can use to demonstrate due diligence as part of their PNGRB compliance obligations. Operators should confirm specific documentation requirements with PNGRB or their regulatory advisor for their particular project.