Lesson 4 of 5 · Engineering Insurance

Boiler & Pressure Plant Insurance

Boiler and Pressure Plant insurance: the explosion and collapse cover, what the Boilers Act, 2025 requires of a boiler owner, why insurance is not compulsory under it, what is excluded, and the reasonable-care conditions.

Fact-checked 8 October 20265 practice questions in the game

What the policy covers

A boiler holds water and steam under pressure. When the vessel fails, the release of energy is sudden and violent. Boiler and Pressure Plant insurance covers explosion or collapse of boilers, pressure vessels and related steam-generating equipment.

The cover reaches the resulting damage to the insured's own property and to third parties. It is a cover for a sudden, unforeseen event in the pressure plant, not for the slow ageing of the equipment.

The law on boilers

Boilers in India are regulated by the Boilers Act, 2025, which replaced the Boilers Act of 1923 and kept its scheme. A boiler may be used only if it is registered and holds a valid certificate. The certificate is renewed periodically after inspection by an authorised inspecting authority.

The Act does not make insurance compulsory, and insurance is not a condition of use under it. Registration and certification are legal duties; the insurance policy is a separate, voluntary contract. Older material that refers to the 1923 Act as the governing law is out of date on the name of the statute, though the registration-and-certificate scheme continues.

Who buys it

Any operator of steam boilers or pressure plant has the exposure. Factories, hospitals with steam systems, hotels, textile mills and sugar factories commonly buy the cover, and lenders often require it. A business with no boiler or pressure vessel, such as a software development company, does not normally have this risk at all.

Exclusions and conditions

Gradual deterioration, corrosion and erosion are excluded. They result from normal wear and not from a sudden unforeseen event, and regular maintenance is the owner's responsibility. A tube that thins over years and is replaced during an overhaul is a maintenance cost, not a claim.

The policy also requires the insured to take reasonable care and keep safety devices working. If the loss results from a breach of those conditions, for example an operator ignoring a low-water or pressure alarm, the insurer may reject or reduce the claim. The outcome in a given case depends on the policy wording and on whether the breach caused the loss.

Rules at a glance

Governing statuteBoilers Act, 2025 (replaced the Boilers Act of 1923)Boilers Act, 2025
Condition for using a boilerRegistered, with a valid certificate renewed periodically after inspection by an authorised inspecting authorityBoilers Act, 2025
InsuranceNot compulsory; not a condition of useBoilers Act, 2025
Gradual corrosion and erosionExcludedBoiler and Pressure Plant policy wording
Illustration

Certificate in order, alarm ignored

Illustration: a dyeing unit in Tiruppur runs a registered boiler with a valid certificate. One night the low-water alarm sounds and the operator silences it and carries on. The boiler runs dry and the shell collapses, damaging the boiler house. Collapse is the kind of event the policy covers, and the boiler was lawfully in use. Yet the policy requires reasonable care and working safety devices, and because the loss resulted from the alarm being ignored the insurer may reject or reduce the claim.

Key points

  • The policy covers explosion or collapse of boilers and pressure vessels, and resulting damage to own property and third parties.
  • The Boilers Act, 2025 replaced the 1923 Act and kept the registration, certification and inspection scheme.
  • A boiler may be used only if registered and holding a valid certificate, renewed after inspection.
  • Insurance is not compulsory under the Act, though operators commonly buy it and lenders often require it.
  • Gradual corrosion, erosion and deterioration are excluded as normal wear.
  • A breach of reasonable-care conditions, such as ignoring safety alarms, may lead to rejection or reduction of a claim.

Common misunderstandings

  • A valid boiler certificate is not an insurance policy: certification is a legal duty under the Boilers Act, 2025, and insurance is a separate voluntary contract.
  • Boiler insurance is not compulsory by law: the Act requires registration and certification, not insurance.
  • The policy is not a maintenance contract: gradual corrosion, erosion and deterioration are excluded.
  • Having the cover does not excuse careless operation: a loss caused by breach of the reasonable-care conditions may be rejected or reduced.

Questions people ask

Is the Boilers Act of 1923 still the law?

No. The Boilers Act, 2025 replaced it. The requirement that a boiler be registered and hold a valid certificate, renewed after inspection, continues under the new Act.

Does the policy pay for damage to a neighbour's property after an explosion?

The cover extends to resulting damage to third parties as well as to the insured's own property, subject to the policy terms.

Why is corrosion excluded when it can also lead to failure?

Gradual corrosion and erosion come from normal wear, not from a sudden unforeseen event. Dealing with them through regular maintenance is the owner's responsibility.

What this lesson relies on

  • Boilers Act, 2025
  • Boiler and Pressure Plant insurance policy wording — operative clause, exclusions, reasonable-care condition

This lesson was reviewed independently against these sources on 8 October 2026. Rules change: check the current regulation, scheme document or policy wording before relying on any figure. This is education, not advice.

Free learning from the Trustner Group. Trustner Academy is an education initiative of the Trustner Group, whose companies work across insurance broking and investment services, with offices in Bangalore, Guwahati, Kolkata, Hyderabad and Mumbai. Everything here is for learning only — it is not advice, a recommendation or an offer of any product. Scenarios are illustrative. Rules and figures change; check the current regulation, scheme document or policy wording before acting on anything.