Boiler and Pressure Vessel Safety Act (430 ILCS 75) + 41 Ill. Adm. Code 2120; amended effective Apr 13, 2026 (50 Ill. Reg. 5659; proposal 49 Ill. Reg. 16123, Dec 26, 2025): NBIC 2025, ASME CSD-1 2024, API-510 11th ed. Oct 2022, ASME BPVC 2025 edition (per the OSFM adopted-rule PDF, re-read Oct 19, 2026). Enforced by OSFM Boiler and Pressure Vessel Safety Division (state deputy inspectors) and commissioned insurance-company inspectors; certificate of inspection issued after fees are paid; residences and buildings under 6 dwelling units exempt. Checked on the primary source; the state record was last reviewed 2026-11-12.
The adopted rule text requires first-time inspections by the jurisdiction and annual internal inspection for covered boilers, with intervals set by type; owners may use API-510 or NBIC intervals for pressure vessels as the rule allows. Confirm intervals for specific equipment with OSFM.
Source: primary document
Statewide layer. County and city amendments sit on top; confirm the local office for the address.
In force (amendments effective Apr 13, 2026, 50 Ill. Reg. 5659; adopted-rule PDF re-read Oct 19, 2026); no further proposal found
There is no federal boiler certificate; the state program below is the whole obligation, with the ASME Boiler and Pressure Vessel Code and the National Board Inspection Code as the referenced standards.
These apply when the building has the equipment or fits the type named. The frequency is the standard one; your local official can set a stricter one, so confirm it for the address.
Boiler and Pressure Vessel Safety Act (430 ILCS 75) + 41 Ill. Adm. Code 2120; amended effective Apr 13, 2026 (50 Ill. Reg. 5659; proposal 49 Ill. Reg. 16123, Dec 26, 2025): NBIC 2025, ASME CSD-1 2024, API-510 11th ed. Oct 2022, ASME BPVC 2025 edition (per the OSFM adopted-rule PDF, re-read Oct 19, 2026). The adopted rule text requires first-time inspections by the jurisdiction and annual internal inspection for covered boilers, with intervals set by type; owners may use API-510 or NBIC intervals for pressure vessels as the rule allows. Confirm intervals for specific equipment with OSFM.
OSFM Boiler and Pressure Vessel Safety Division (state deputy inspectors) and commissioned insurance-company inspectors; certificate of inspection issued after fees are paid; residences and buildings under 6 dwelling units exempt.
Nothing is scheduled. The rule above stays in force until the state adopts a newer edition or amends the program; AHJ Radar re-checks the source weekly.
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