Laws, Rules and Regulations - The National Board of Boiler and ...

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ObJeCtS SUbJeCt tO rUleS FOr COnStrUCtIOn anD StampInG
All boilers and pressure vessels, except the following:
1. Boilers and pressure vessels under federal control.
2. Domestic water heaters designed for heating potable water, equipped with approved pressure-relieving device, containing
only water and not exceeding:
a. Capacity of 120 gallons;
b. Water temperature of 210°F;
c. Pressure of 150 psig;
d. Heat input of 200,000 BTU per hour.
3. Pressure vessels containing liquified petroleum gas under the jurisdiction of the state fire marshal. (Exception: The construction
and repair of such vessels shall be in compliance with the boiler law.)
4. Air tanks used in the operation of brakes on self-propelled vehicles and trailers used for transportation of freight or
passengers.
5. Medical sterilizers not exceeding 1-1/2 cubic feet in volume.
6. Pressure vessels not exceeding 5 cubic feet in volume which are not operated at gage pressure of more than 150 psi,
equipped with a relief valve, approved under ASME Code, adopted by the board and set at a maximum pressure of 150
psi.
7. The following boilers and pressure vessels are exempt from Oregon Boiler Law, except provisions relating to construction,
installation, inspection, and fees:
a. Boilers operated at less than 15 psig located on farms and used solely for agricultural purposes, except when used
in connection with a greenhouse.
b. Air tanks located on farms used solely for agricultural purposes.
c. Boilers or pressure vessels used in a single private residence shall have an installation inspection and be provided
with a permit to operate, but shall be exempt from subsequent inspection required in the boiler law, except
changes or repairs made.
d. Pressure vessels operated at less than 15 psig.
e. Certain miniature boilers (see 918-225-365 of the Oregon Administrative Rules).
ObJeCtS SUbJeCt tO rUleS FOr FIelD InSpeCtIOn
Same as OBJECTS SUBJECT TO RULES FOR CONSTRUCTION AND STAMPING.
InSpeCtIOnS reQUIreD
Each boiler and pressure vessel used or proposed to be used within the state, except as exempted under ORS 480.510 to
480.665 or by administrative rule, shall be thoroughly inspected as to its construction, installation, operation, and condition as
follows:
Item Internal External
Power boilers 1 Year 1 Year*
Low-pressure steam and vapor-heating boilers 2 Years 2 Years**
Cast-iron boilers — 2 Years
Low-pressure hot-water heating and hot-water supply boilers 6 Years 2 Years
Pressure vessels subject to internal corrosion 2 Years 2 Years
Pressure vessels not subject to internal corrosion — 2 Years
Pressure vessels containing anhydrous ammonia intended for use as a fertilizer — 3 Years
Pressure vessels: Fixed, containing only air, not located at a place of public
assembly, less than 20 cubic feet in volume, operated at 200 psig or less
— 6 Years
Steam and hot-water nonboiler external piping
*Both under pressure and not under pressure.
**Under pressure.
Inspected upon installation
Hydrostatic test when deemed necessary to determine the safety of a boiler or pressure vessel shall be made by the owner/user and witnessed
by a deputy or special inspector.
2013 National Board Synopsis of Boiler and Pressure Vessel Laws, Rules and Regulations