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

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2. Manually-fired boilers for model locomotive, boat, tractor, stationary engine, or antique motor vehicles constructed and
maintained only as a hobby for exhibition or educational purposes (not for commercial use), provided such boilers have
an inside diameter less than 12 inches or a grate area of 2 square feet or less and are equipped with an ASME-stamped
safety valve of adequate capacity and size, a water level indicator, and a pressure gage.
3. Pressure vessels used for transportation and storage of compressed gases when constructed and used in compliance
with ICC specifications and regulations.
4. Air tanks located on vehicles operating under the rules of state authorities and used for carrying passengers or freight.
5. Air tanks installed on the right-of-way of railroads and used directly in the operation of trains.
6. Pressure vessels that do not exceed:
a. 5 cubic feet in volume and 250 psig;
b. 1-1/2 cubic feet in volume; or
c. An inside diameter of 6 inches and 3,000 psig.
7. Pressure vessels operating at a working pressure not exceeding 15 psig.
8. Water-containing vessels (excluding hot-water heaters) having a working pressure not exceeding 125 psig, including
those with air, the compression of which serves only as a cushion.
9. Tanks containing air and liquids in which pressure is maintained by pumps.
10. Group I refrigerant receivers (American Society of Heating, Refrigerating and Air Conditioning Engineers).
11. Hot-water heaters installed after the effective date of this act, provided that none of the following limitations is exceeded:
a. Heat input of 200,000 BTU per hour;
b. Water temperature of 210°F.
ObJeCtS SUbJeCt tO rUleS FOr FIelD InSpeCtIOn
Same as OBJECTS SUBJECT TO RULES FOR CONSTRUCTION AND STAMPING, except:
1. Private residences or apartment houses of fewer than three family units.
2. Private residences or apartment houses with three or more family units with an output of less than 200,000 BTU per
hour.
InSpeCtIOnS reQUIreD
1. Power boilers and high-pressure, high-temperature water boilers:
a. One annual certificate inspection;
b. One annual external inspection while under pressure, if possible.
2. Low-pressure steam or vapor heating boilers, hot-water heating and hot-water supply boilers: one biennial certificate
inspection, with an internal inspection at least once quadrennially where construction permits.
3. Pressure vessels: one biennial certificate inspection.
InSUranCe InSpeCtIOn reQUIrementS
1. Inspections made by inspectors employed by insurance companies and commissioned by the department are accepted
in lieu of inspections made by a department inspector.
2. A copy of the certificate inspection report must be filed with the commissioner within ten days after inspection.
3. The department should be notified within 30 days of suspension of insurance on account of dangerous conditions.
4. The department should be notified immediately of insurance discontinued or refused on account of dangerous conditions.
2013 National Board Synopsis of Boiler and Pressure Vessel Laws, Rules and Regulations