NRS 455C and NAC 455C; ASME BPVC 2021 (NBIC stays 2019) per R034-21, effective Aug 22, 2023 (DIR compilation and Bulletin MCS 2301); CONFLICT: LCB codified NAC 455C.108 web text still shows BPVC 2019. Enforced by Nevada Division of Industrial Relations, Mechanical Compliance Section; initial inspection by an MCS inspector, later inspections by MCS or insurer/inspection-agency special inspectors. Checked on the primary source; the state record was last reviewed 2026-11-12.
NAC 455C.156 certificate inspections: power boilers internal yearly plus external about 6 months later; low-pressure steam heating yearly; hot-water heating/supply every 2 years; unfired pressure vessels every 4 years. R034-21 added a lockable electrical disconnect requirement.
Source: primary document
Statewide layer. County and city amendments sit on top; confirm the local office for the address.
In force. Oct 15, 2026: LCB NAC 455C page (Rev. 4/13/2026) still shows 455C.108 with BPVC 2019, NBIC 2019 and an automatic-adoption clause, history ending R045-20 (10-26-2020); DIR compilation shows R034-21 (eff. 08-22-2023) moved BPVC to 2021 and Bulletin MCS 2301 says automatic adoption was removed. No MCS workshop listed on the LCB notice board
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.
NRS 455C and NAC 455C; ASME BPVC 2021 (NBIC stays 2019) per R034-21, effective Aug 22, 2023 (DIR compilation and Bulletin MCS 2301); CONFLICT: LCB codified NAC 455C.108 web text still shows BPVC 2019. NAC 455C.156 certificate inspections: power boilers internal yearly plus external about 6 months later; low-pressure steam heating yearly; hot-water heating/supply every 2 years; unfired pressure vessels every 4 years. R034-21 added a lockable electrical disconnect requirement.
Nevada Division of Industrial Relations, Mechanical Compliance Section; initial inspection by an MCS inspector, later inspections by MCS or insurer/inspection-agency special inspectors.
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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