PCB and Component Plants Are India's Newest Fire Risk Class, and August Proved It

On 4 August 2026, a fire broke out at the ILGIM printed circuit board (PCB) chip manufacturing unit in the Ecotech-3 industrial area of Greater Noida. Xinhua reported that two firefighters were killed and three injured during the rescue and firefighting operation. The fatalities were among the responders, which is the detail that should hold an underwriter's attention: the fire behaved in a way that caught trained responders inside it.

The class is new enough in India that most fire underwriters rate it off analogy rather than experience. A PCB plant looks, on a proposal form, like light electronics assembly: clean floors, low headcount, no furnaces, modest fire load per square metre. Behind the cleanroom wall sits a wet chemical process line running solvents, acids and plating baths, a large connected electrical load, imported tooling, and construction materials chosen for particulate control rather than fire performance.

The timing is the second half of the story. On 17 August 2026, two weeks after the fire, the Ministry of Electronics and Information Technology (MeitY) approved 31 fresh proposals under the Electronics Components Manufacturing Scheme (ECMS), per PIB and Business Standard. That takes cumulative approvals to 106 applications covering 30 products across 15 states, with expected investment of Rs 69,548 crore. India is about to add many first-generation component plants, built by promoters who in most cases have never run this process, insured by underwriters with very little Indian loss history for it.

The ECMS pipeline is not one factory type. PIB's description of the approvals covers printed circuit boards, mechanical components, sub-assemblies, camera modules and optical transceivers, and the latest tranche includes first-ever domestic manufacturing of filters, coils and speakers. Each carries a different hazard mix, and a broker who treats "component manufacturing" as one rating class will misprice most of the portfolio.

The practical underwriting groupings are:

1. PCB fabrication. The most chemically intensive: copper-clad laminate, drilling, electroless and electrolytic copper plating, photoresist application and stripping, etching with cupric chloride or ammoniacal etchants, solder mask curing. Wet benches, rectifiers, solvent handling and acid storage in one building.
2. Assembly and sub-assembly (SMT lines, camera modules, optical transceivers). Lower chemical load, higher value density. Reflow ovens, solvent cleaning, and high-value inventory in reels and trays on the floor.
3. Electromechanical components (filters, coils, speakers, mechanical parts). Winding, impregnation and coating with varnishes and resins, plus press shops and plating. Impregnation and curing ovens are a recognised fire source.
4. Cell and battery-adjacent operations. Wherever lithium cells are handled or stored, the plant inherits a thermal-runaway exposure that standard sprinkler design assumptions answer poorly.

A single ECMS-funded campus frequently holds two or three of these on one plot, which creates the accumulation problem set out in the broader electronics component plant risk profile. The chemical hazard of the PCB line and the value concentration of the assembly line share a fire compartment, so the maximum probable loss is set by the worst combination, not by any one process.

The wet process line is where the fire usually starts and where escalation risk is highest. Three mechanisms account for most of it.

Solvent cleaning and photoresist processing. PCB and component lines use solvents for degreasing, photoresist stripping and pre-solder cleaning. Isopropyl alcohol is the workhorse, a low flash point flammable liquid handled in open or semi-open benches at scale. The recurring failures are mundane: decanting outside a ventilated enclosure, oversized day tanks, saturated wipes in open bins, and extraction ducting carrying solvent vapour past electrical equipment. A vapour flash in a duct spreads fire on a path no compartment wall interrupts.

Plating rectifiers and the electrical load. Electroplating draws high direct current through rectifiers sitting beside tanks of conductive, corrosive solution. Rectifier failure, busbar overheating and connection degradation are a standard cause of loss in plating shops worldwide. Acid mist attacks cable terminations and panel internals, so an installation compliant at commissioning degrades faster here than in a dry factory. Thermographic inspection of plating-area panels belongs in the maintenance calendar.

Process heat and curing ovens. Solder mask curing, varnish impregnation, reflow ovens and drying tunnels combine heat with residues. Ovens accumulate flammable residue from the coatings passing through them, and an oven fire in a tunnel connected to the extraction system moves quickly. Interlocks that shut the conveyor and heaters on extraction failure, plus a documented oven-cleaning schedule, are cheap controls many first-time operators lack.

Storage layout sits under all three. Acids and solvents kept together, or plating chemicals stored without segregation by compatibility, turn a contained fire into a reaction and toxic-release event. It is one of the fastest survey rejections in this class and one of the cheapest to fix beforehand.

The cleanroom distinguishes this class from a generic chemical process shed, and it works against the fire case four ways.

First, panel construction. Cleanroom walls and ceilings are modular sandwich panels. Where the core is a combustible insulant rather than mineral wool, the panel system becomes a concealed fire path above the ceiling and inside the wall, out of reach of sprinklers below and out of sight of anyone in the room. Indian insurers have long experience of sandwich-panel fires in cold storage. The core material specification, not the panel's cleanliness rating, is the underwriting fact.

Second, compartmentation is deliberately compromised. Return-air plenums, pass-throughs, ceiling voids and the recirculating air handling system all open up spaces a fire strategy would otherwise separate. Dampers on every penetration, and AHU shutdown logic on alarm, are the compensating controls, and on a first-time plant they are frequently value-engineered out.

Third, detection and suppression must work around the airflow. High air-change rates dilute smoke and delay conventional point detection, so aspirating detection sampling the return air path is the most useful early-warning investment in the building. Water damage to an SMT line can exceed fire damage, which pushes plants toward clean-agent or water-mist protection in the highest-value rooms, with sprinklers elsewhere.

Fourth, smoke contaminates far beyond the burn area. Combustion products here are corrosive where PVC, halogenated laminates or plating chemistry are involved, and chloride deposits on assemblies and equipment cause latent failure months later. A fire confined to one room can write off inventory and tooling across the whole clean zone, which is why the material damage claim in this class routinely exceeds what the burnt footprint suggests.

The class also carries unusual value per square metre: copper foil and copper-clad laminate, gold salts and gold-bearing plating solution, palladium chemistry, imported equipment and finished inventory worth far more per kilogram than ordinary factory stock. Three exposures follow that a fire-only view misses.

• Theft and infidelity. Precious-metal anodes, plating solution and small high-value components are portable and hard to reconcile. A burglary insurance section and fidelity guarantee cover both belong in the discussion, alongside stock reconciliation controls on precious-metal chemistry.
• Sum insured drift. Copper prices and stock levels swing through a ramp-up year. A sum insured fixed at commissioning is the classic route to an average clause reduction at claim stage; declaration-basis stock cover fits better.
• Breakdown of imported tooling. Plating rectifiers, exposure units, drills, pick-and-place heads and reflow ovens are imported, and the fire policy does not respond to internal electrical or mechanical failure. A separate machinery breakdown cover, plus electronic equipment cover for control and metrology gear, closes that gap.

Lithium cell storage sits alongside these: quantity, state of charge and whether the store is a separate structure change the fire risk of the whole site.

Underwriters have limited Indian loss data for this class, and the response to thin data is a longer question list and a conservative starting rate. A broker with the answers ready shortens the placement. Expect the survey file to turn on these:

1. Process split and layout. Area and value by process (wet chemical, assembly, cleanroom, warehouse, utilities), and whether rated fire walls separate them.
2. Chemical inventory and storage. Maximum quantities of solvents, acids, etchants and oxidisers; segregation by compatibility; detached store or inside the production block; bunding; and the Petroleum and Explosives Safety Organisation licensing position.
3. Cleanroom panel core specification, with documentation. This fact moves the rate more than most of the file.
4. Air handling fire strategy. Damper schedule, AHU shutdown logic on alarm, and whether return-air plenums are protected.
5. Detection design. Aspirating detection in cleanrooms and return-air paths, plus detection inside ovens, ducting and electrical panels.
6. Suppression and water supply. Sprinkler design density for the storage configuration, clean-agent or water-mist protection for high-value rooms, hydrant coverage, static water volume and pumps.
7. Electrical maintenance evidence. Thermographic reports for rectifiers, busbars and panels, and how panel specification treats the corrosive atmosphere.
8. Lithium cell handling. Quantity, state of charge, store construction and separation, and the thermal-event plan.
9. Emergency response. On-site fire team competence, and the reach of the nearest fire station. The Greater Noida loss is a reminder that responder outcomes are part of the risk, and that plants briefing the local fire service on chemical inventory and layout beforehand get a better response.

Negotiate the starting rate down with evidence. Documented protection standards, third-party risk-engineering reports and a credible loss-prevention plan move a rate; assurances about how modern the plant is do not.

The recurring mistake in a first plant is treating fire protection as a compliance item sized to obtain occupancy approval, then finding at placement that the insurer prices the plant as unprotected. Protection is a capital decision to be taken alongside the process equipment order, because retrofitting sprinkler mains and detection into a commissioned cleanroom costs several times what it costs to build in. The budget list to carry from design stage:

• Non-combustible cleanroom panel cores throughout, specified and documented at procurement, because retrofit is not practical.
• Automatic sprinkler protection designed for the actual storage and process configuration, with adequate static water reserve and standby pumps. It is also the largest single lever on premium; see how a sprinkler system affects the fire rate.
• Aspirating smoke detection in cleanrooms, return-air paths and equipment rooms, with detection also in ducting and electrical panels.
• Clean-agent or water-mist suppression for rooms where water damage to tooling would exceed fire damage.
• Segregated, bunded chemical storage in a detached or compartmented store.
• A separate lithium cell store with its own detection and separation distance.
• Fire and smoke dampers with an AHU shutdown sequence, tested and documented.
• A thermographic and electrical maintenance programme on the plating and process electrical installation.
• A trained on-site emergency response team, with a pre-incident plan shared with the local fire service covering chemical inventory and cleanroom access.

The programme has to hold several covers together, and the boundaries between them are where first-time buyers get caught.

Material damage. The choice between a fire policy and an industrial all risks structure matters more here than in a simple occupancy, because the causes that hurt a component plant (accidental damage to process equipment, contamination, breakdown-initiated fire) sit at the edges of a named-peril wording.

Smoke and contamination. Read how the wording treats damage by smoke, corrosion and contamination where the affected item did not itself burn. That clause decides whether the claim covers the whole clean zone or only the burnt room. Check the debris removal and decontamination sub-limits too.

Business interruption. The indemnity period must cover rebuild plus cleanroom and customer requalification. A supplier resumes shipping when the customer re-approves parts from the rebuilt line, not when the line restarts. Twelve months is almost always too short here.

Construction phase. Most ECMS plants approved in August 2026 are still in construction or fit-out, needing marine cargo cover on imported equipment and an erection all risks policy that hands over cleanly to the operational programme. Handover gaps are a standard source of uninsured loss.

With 106 applications approved and Rs 69,548 crore of expected investment across 15 states, the market will underwrite a lot of this class on thin loss history, and rating judgement will vary between insurers while the data catches up. Sarvada gives commercial insurance brokers structured, searchable access to insurer policy wordings, so a fire, industrial all risks, machinery breakdown and business interruption programme can be compared clause by clause on smoke and contamination, decontamination sub-limits, lithium storage warranties and protection conditions before binding. Request Access to evaluate the platform for electronics and component-manufacturing risk.