Refining and Petrochemicals

Industry Context

Indian refining is spending at a scale the sector has never seen. IOCL alone runs capital expenditure of roughly Rs 30,000 to 35,000 crore a year, with brownfield expansions at Panipat, Gujarat, and Barauni estimated at about Rs 63,500 crore, and it treats whole-refinery turnaround maintenance as a formal institutional practice.

Every rupee of that spend rides on pressure equipment that must be inspected during construction, watched through every run cycle, and defended at every turnaround. That is precisely the demand TCR serves: PMI and weld NDT at the project stage, turnaround inspection manpower and advanced NDT in operation, and FFS, RLA, and failure analysis when equipment ages. The ARTiS reference list alone spans eight IOCL refineries plus HPCL, BPCL, HMEL, BORL, Nayara, and CPCL.

Indian refining capacity sits at approximately 256 million metric tonnes per annum and is on a declared path to 310+ million metric tonnes per annum by 2028 to 2030. The capex pipeline in flight is large and well-anchored: the IOCL Panipat 25 MMTPA expansion, the IOCL Paradip Petrochemical Complex, the BPCL Bina expansion to 11 MMTPA plus the petrochemical complex addition, the HPCL Barmer 9 MMTPA grassroots refinery, the Numaligarh Refinery 9 MMTPA expansion, the CPCL Cauvery Basin 9 MMTPA grassroots, and a steady stream of debottlenecking and HSD-quality projects across IOCL Mathura, IOCL Koyali, MRPL, BPCL Mumbai, BPCL Kochi, and HPCL Mumbai. The Indian average refinery is roughly 30 years old; the asset-integrity bench is therefore deep and durable.

In the GCC orbit, the Saudi Aramco and SABIC ecosystem (SATORP, YASREF, Petro Rabigh, LUBEREF, MARAFIQ, SADARA, Sipchem, Advanced Petrochemical) anchors TCR Arabia's refining and petrochemicals deployment, with steady cross-package movement onto the master gas system, Jafurah, and downstream petrochemical units.

Three macro pressures shape the work: opportunity-crude processing (heavier, more sour, more contaminated feedstock margins), renewable-feedstock co-processing (waste-oil-derived and bio-feedstock streams introducing new corrosion mechanisms), and the carbon-capture and decarbonisation capex layer (CCS/CCUS at FCC and SMR units, energy-efficiency projects, hydrogen-network expansion).

Renewable-feedstock co-processing introduces free-fatty-acid corrosion on hydroprocessing trains and chloride introduction on FCC; the corrosion testing bench (see Corrosion & Sour Service) and the corrosion-monitoring service line carry the relevant qualification capability. Green hydrogen integration brings the API 941 HTHA discipline into expanded service (cross-vertical with Power and Fertilisers; reference Section 12 Energy Transition). Carbon capture in refining surfaces amine-system corrosion, MEA degradation, and FCC flue-gas CCS retrofit qualification. Refinery efficiency capex (energy audit, fired-heater conversion, exchanger upgrade) feeds Pillar 3 engineering consulting.

The strategic positioning sits clean: TCR's refining bench is set up for the full corrosion, integrity, and life-extension surface area as the Indian refining fleet ages, capex extends, and feedstock carbon shifts.

Damage Mechanisms We Investigate

Anchored to API RP 571 3rd Edition (March 2020) and approximately 67 to 70 catalogued mechanisms.

Service Applications Across the TCR Continuum

A refinery buys integrity services against three recurring pressures.

In operation, the problem set is high temperature hydrogen attack in hydroprocessing reactors, sulfidation and naphthenic acid corrosion in the crude and vacuum train, polythionic acid stress corrosion cracking that forms in sensitised austenitic internals the moment a unit is opened for shutdown, creep in heater tubes, and corrosion under insulation across the tank farm and piperack. During shutdown and turnaround, the pressure is time: inspection windows are compressed, discovery work erupts mid-turnaround, scaffolding dominates cost, and qualified API 510, API 570, and API 653 inspectors are scarce exactly when every refinery in the region wants them. In procurement, the risk is material: mis-certified alloy at the pipe mill, positive material identification gaps in incoming spools, and long-lead forgings that arrive without credible test evidence. TCR Engineering and TCR Advanced service all five stages of the five-stage Trusted Relationship Model (see Why TCR) against exactly these pressures.

Stage One, Sourcing and Procurement: TCR runs factory audits and original equipment manufacturer qualification at pipe mills, forge shops, and valve and fitting vendors, with raw material inspection, sample picking, in-production checks, and loading supervision. Procurement samples are tested in the NABL NABLT0726MH18640 accredited laboratory: mechanical testing per ASTM A370 and ASTM E8/E8M, impact per ASTM E23, sour service qualification through sulphide stress cracking per NACE TM0177-2016 and hydrogen induced cracking per NACE TM0284, intergranular corrosion per ASTM A262, and positive material identification per API RP 578, so that hydrogen service steels and sour service materials per NACE MR0103 enter the plant with defensible evidence.

Stage Two, Construction and Commissioning: During unit construction, revamps, and capacity expansion, TCR provides baseline non-destructive testing: phased array ultrasonic testing and time of flight diffraction on thick-wall welds, radiography with robotic crawlers on piping, welder certification and procedure qualification per ASME Boiler and Pressure Vessel Code Section IX, weldability and consumable evaluation, post-weld heat treatment, and positive material identification on every alloy joint. The output is the baseline data set, thickness grids, weld maps, and material records, against which every later inspection of the unit is measured.

Stage Three, In-Service: On-stream, TCR deploys advanced non-destructive testing for high temperature hydrogen attack detection per API RP 941, hydrogen induced cracking mapping, carburisation screening, high temperature corrosion mapping on live equipment, and mid-wall fissure detection, supported by thermography of fired heaters, remote visual inspection, and robotic tools. TCR Advanced builds the risk-based inspection plan per API RP 580 and API RP 581 through the Knowledge-Based Audit method and sets integrity operating windows per API RP 584, so that inspection effort concentrates where damage-mechanism susceptibility per API RP 571 actually sits.

Stage Four, Shutdown and Turnaround: In the turnaround window, TCR delivers pipeline and weld inspection, heat exchanger tube inspection, in-situ metallographic replication on heater tubes, reactors, and hot piping by the twelve dedicated field teams, storage tank inspection per API 653 including in-service robotic crawling, coke drum and boiler condition assessment, robotic reformer tube inspection with ARTiS on hydrogen and steam methane reformer units, and turnaround inspection manpower with API 510, API 570, and API 653 qualified inspectors, sized to the shutdown and released when it closes.

Stage Five, Continuum: The forward-looking stage converts findings into operating decisions: failure analysis per API RP 585, remaining life assessment of heater tubes per API 530, fitness for service per API 579-1/ASME FFS-1 on hydroprocessing reactors, columns, and vessels, fire damage assessment per API 579-1 Part 11, integrity operating window refinement per API RP 584, engineering design and analysis, and the contract research, including renewable feed and co-processing corrosion studies, that feeds the next procurement cycle.

Marquee Projects