National Board Inspection Code (NBIC) 2021 plus ASME Section I/IV and CSD-1; 481 IAC ch. 390 under Iowa Code ch. 89. Enforced by DIAL (Dept. of Inspections, Appeals & Licensing), Boiler and Pressure Vessel program, under Iowa Code ch. 89. Checked on the primary source; the state record was last reviewed 2026-11-12.
Chapter 390 (revised effective Mar 26, 2025) adopts the 2021 NBIC for inspection; certificate inspection within a 60-day window before expiration; certificate to operate must be posted; temporary-object certificates last 1 year; some objects get internal inspection every 4 years.
Source: primary document
Statewide layer. County and city amendments sit on top; confirm the local office for the address.
In force; no pending edition change found as of this research
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.
National Board Inspection Code (NBIC) 2021 plus ASME Section I/IV and CSD-1; 481 IAC ch. 390 under Iowa Code ch. 89. Chapter 390 (revised effective Mar 26, 2025) adopts the 2021 NBIC for inspection; certificate inspection within a 60-day window before expiration; certificate to operate must be posted; temporary-object certificates last 1 year; some objects get internal inspection every 4 years.
DIAL (Dept. of Inspections, Appeals & Licensing), Boiler and Pressure Vessel program, under Iowa Code ch. 89.
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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