ASME BPVC, National Board Inspection Code (latest edition and current addenda), API 510 and CSD-1 (OAC 380:25-3-4). Enforced by Oklahoma Department of Labor, Boiler & Pressure Vessel program (40 O.S. Sec. 141.1 et seq.). Checked on the primary source; the state record was last reviewed 2026-11-12.
OAC 380:25-3-2: power boilers annual certificate inspection, internal where construction permits, plus annual external. Low-pressure steam: internal every 2 years. Hot water heating/supply boilers: annual external. Pressure vessels subject to corrosion: internal triennially, others every 10 years. Statute allows two-month grace. CSD-1 applies to boilers installed since July 1, 1995.
Source: primary document
Statewide layer. County and city amendments sit on top; confirm the local office for the address.
In force; no pending change found - rule already auto-tracks the latest ASME/NBIC edition
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.
ASME BPVC, National Board Inspection Code (latest edition and current addenda), API 510 and CSD-1 (OAC 380:25-3-4). OAC 380:25-3-2: power boilers annual certificate inspection, internal where construction permits, plus annual external. Low-pressure steam: internal every 2 years. Hot water heating/supply boilers: annual external. Pressure vessels subject to corrosion: internal triennially, others every 10 years. Statute allows two-month grace. CSD-1 applies to boilers installed since July 1, 1995.
Oklahoma Department of Labor, Boiler & Pressure Vessel program (40 O.S. Sec. 141.1 et seq.).
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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