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

83
Stamping:
Where appropriate, the following National Board stamps or ASME Code symbol stamps are required:
1. National Board: R, VR.
2. ASME Code: all.
ObJeCtS SUbJeCt tO rUleS FOr COnStrUCtIOn anD StampInG
Boilers and pressure vessels (installed after November 12, 1986), except:
1. Water heaters, pool heaters, and hot-water supply boilers in which none of the following limitations is exceeded:
a. A heat input of 200,000 BTU per hour;
b. A water temperature of 210°F;
c. A nominal water-containing capacity of 120 gallons (provided with one or more ASME-stamped safety relief valves).
2. Hot-water storage tanks less than or equal to 120 gallons.
3. Coil-type hot-water boilers used only for steam-vapor cleaning of things such as machinery, equipment, and buildings,
when none of the following limitations is exceeded:
a. 1-inch diameter tubing or 3/4-inch nominal pipe size with no drums or headers attached;
b. Nominal water-containing capacity of 6 gallons;
c. Water temperature of 350°F;
d. Steam not generated within the coil;
e. One or more safety relief valves must be installed and adequate controls provided.
ObJeCtS SUbJeCt tO rUleS FOr FIelD InSpeCtIOn
Same as OBJECTS SUBJECT TO RULES FOR CONSTRUCTION AND STAMPING. Required safety controls were not grandfathered
for installations before November 12, 1986.
InSpeCtIOnS reQUIreD
1. Power boilers; high-pressure, high-temperature water boilers; waste heat boilers; and unfired steam boilers:
a. An annual certificate inspection which shall be an internal inspection where construction permits;
b. An annual external inspection while under normal operating conditions.
2. Low-pressure boilers and pressure vessels: A biennial certificate inspection:
a. Steam or vapor boilers shall have an external inspection and an internal inspection biennially where construction
permits;
b. Hot-water heating and hot-water supply boilers shall have an external inspection biennially and where construction
permits, an internal inspection at the discretion of the inspector;
c. Pressure vessels shall have an external inspection biennially.
Pressure vessels that are under the supervision of an owner/user inspection agency shall be inspected at the same interval unless
otherwise agreed upon by the board and the owner/user inspection agency.
3. Effective January 1, 2007: An installation permit must be obtained from the Division of Fire Safety, Boiler and Pressure
Vessel Safety Unit for the installation of all boilers and pressure vessels that fall within the scope of the Boiler and Pressure
Vessel Act (mandatory for all installations starting on or after January 1, 2008).
InSUranCe InSpeCtIOn reQUIrementS
Inspectors employed by insurance companies and approved owner/user inspection agencies are accepted in lieu of inspections
made by the department. Reports shall be made on National Board forms to the chief inspector.
2013 National Board Synopsis of Boiler and Pressure Vessel Laws, Rules and Regulations