Chemical and Specialty Chemicals

Industry Context

Chemical plants concentrate risk: aggressive chemistries, high temperatures, and pressure equipment in continuous service, frequently inside dense industrial corridors such as Dahej, Ankleshwar, and the Bharuch belt where TCR maintains a dedicated division. A single integrity failure in this sector is rarely a maintenance line item; it is a production loss, an insurance claim, and a regulatory event at once.

The inspection answer has to combine chemistry with metallurgy, which is TCR's home ground: corrosion and sour-service testing to NACE and ASTM programmes, HIC and SCC qualification of construction materials, in-situ metallography on reactors and piping, fitness for service assessment, and root cause failure analysis when a chemistry-metallurgy interaction does find a weak point.

The Indian chemical-processing sector is the third-largest globally and is growing through the Production Linked Incentive (PLI) scheme on bulk chemicals and the China Plus One supply-chain reorganisation.

The capex pipeline runs across speciality chemicals (Aarti Industries, SRF, Atul, UPL, Tagros, Anupam Rasayan, Vinati Organics), agrochemicals (UPL, Coromandel International, PI Industries, Bayer CropScience, Sumitomo Chemical India), pharmaceuticals API and intermediates, dyes and pigments, fluorochemicals, and the integrated petrochemical-to-chemical complexes (Reliance Jamnagar, IOCL Paradip, BPCL Bina, GAIL Pata, ONGC Mangalore, NRL Numaligarh).

The integrated petrochemicals expansion (Reliance, IOCL, BPCL, ONGC, GAIL, HMEL) carries cross-vertical scope with Refining (the BPCL Bina HCU duplex AFC RBI, the HMEL Bhatinda Isomerization Reactor 503-R-001 FFS, the HMEL Bathinda VGO Unit fire response).

The chemical-vertical FFS bench at TCR Advanced carries 20 verified engagements in chemicals (the single largest segment of the 48-job FFS ledger), positioning the vertical as a deep operating-side capability.

Bio-based chemicals and bio-refining (lactic acid, succinic acid, bio-ethylene, furfural; cross-vertical with Refining) bring new corrosion mechanism scope on bio-feedstock streams. Green hydrogen produced from chlor-alkali by-product brings cross-vertical hydrogen storage and pressure-vessel scope (cross-vertical with Pipelines, Fertilisers, and Refining). Carbon capture at chemical plants brings amine-system corrosion qualification (cross-vertical with Refining). The Production Linked Incentive (PLI) scheme on bulk chemicals and the China Plus One reshoring effect drive new-plant capex with full integrity-engineering scope from front-end design through commissioning.

TCR is the multi-disciplinary integrity partner for the Indian chemical-plant fleet, the largest single-vertical FFS bench (20 verified engagements), the largest classical wet-chemistry capacity in India for compositional certification, and the cross-vertical static-equipment specialist for chemical-plant pressure boundaries.

Damage Mechanisms We Investigate

Service Applications Across the TCR Continuum

Chemical and speciality chemical plants run the widest materials palette in industry: glass-lined steel, high-alloy austenitics and duplex grades, nickel alloys, titanium, graphite, and fibre-reinforced plastic, often within a single unit.

The problem set follows: chloride stress corrosion cracking of stainless steels, dew-point acid corrosion in flue and vent systems, microbiologically influenced corrosion in cooling water circuits, selective leaching, erosion-corrosion in slurry service, and the degradation of non-metallic linings and FRP scrubbers that no thickness gauge sees. Shutdowns are frequent but short, batch campaigns tolerate little slippage, and procurement risk concentrates in exotic alloy verification and gasket, lining, and polymer quality. TCR Engineering and TCR Advanced service all five stages of the five-stage Trusted Relationship Model (see Why TCR) across organic, inorganic, agrochemical, and speciality operations.

Stage One, Sourcing and Procurement: Alloy verification by positive material identification and optical emission spectrometry protects the exotic-material supply chain, supported by intergranular corrosion testing per ASTM A262 and ASTM G28, pitting and crevice testing per ASTM G48, chloride stress corrosion cracking per ASTM G36, polymer, rubber, and FRP/GRP testing, gasket and lining material evaluation, and vendor audits with sample picking on reactors, columns, and exchangers.

Stage Two, Construction and Commissioning: During plant construction and unit addition, TCR provides baseline non-destructive testing, welder certification and procedure qualification per ASME Boiler and Pressure Vessel Code Section IX including high-alloy and dissimilar joints, radiography and phased array ultrasonic testing, post-weld heat treatment, positive material identification across the alloy population, and holiday testing of linings, delivering the baseline record for the unit.

Stage Three, In-Service: In operation, TCR runs corrosion mapping and thickness monitoring on columns, reactors, and piping, thermography of reactors and electrical systems, remote visual inspection of confined equipment, and risk-based inspection planning per API RP 580 and API RP 581 through the Knowledge-Based Audit method, with integrity operating windows per API RP 584 tuned to process chemistry excursions rather than calendar intervals.

Stage Four, Shutdown and Turnaround: In the shutdown, TCR inspects reactors, glass-lined equipment, columns, and exchanger bundles, runs in-situ metallographic replication on high temperature components, tank inspection per API 653, boiler condition assessment on captive utilities, and magnetic particle and penetrant testing on nozzles and agitator components, with turnaround inspection manpower matched to short, dense windows.

Stage Five, Continuum: The engineering stage delivers failure analysis across metallic and non-metallic components, including microbiologically influenced corrosion, selective leaching, and stress corrosion cracking investigations, fitness for service per API 579-1/ASME FFS-1, remaining life assessment of captive boilers and ageing units, fire damage assessment, and the contract research and custom test rigs, autoclaves and simulated-environment apparatus, that answer the process questions standard methods cannot.

Marquee Projects

For Sulzer Chemtech Middle East in Bahrain, TCR ran a finite-element simulation of bulged reactors in January 2026. Microbiologically influenced corrosion studies, refractory testing, and failure analysis on FRP and GRP tanks carrying aggressive chemicals round out the specialty-chemical record, supported by the largest classical wet-chemistry capacity in India.