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

139
ObJeCtS SUbJeCt tO rUleS FOr COnStrUCtIOn anD StampInG
All boilers and pressure vessels, except the following:
1. Boilers under federal control.
2. Unfired pressure vessels meeting requirements of the US Department of Transportation for shipment of liquids or gases
under pressure.
3. Air tanks located on vehicles operating under rules of other state authorities and used for carrying passengers or
freight.
4. Air tanks installed on the right-of-way of railroads and used directly in the operation of trains.
5. Unfired pressure vessels:
a. Having a volume of 5 cubic feet or less;
b. Designed for a working pressure of 15 psi or less.
6. Unfired pressure vessels containing liquified petroleum gases (under jurisdiction of the state fire marshal).
7. Hot-water supply boilers (water heaters) with less than 200,000 BTU per hour heat input. However, such water heaters
with a heat input of between 100,000 and 199,999 BTU per hour are subject to registration, inspection, and inspection
certificate requirements of the Tennessee Boiler Rules and Regulations.
ObJeCtS SUbJeCt tO rUleS FOr FIelD InSpeCtIOn
Same as OBJECTS SUBJECT TO RULES FOR CONSTRUCTION AND STAMPING, except the following:
1. Boilers located on farms used solely for agricultural purposes.
2. Boilers and pressure vessels located in municipalities where boiler inspection ordinances are in force, in accordance
with provisions of Section 68-122-105 of the Tennessee Code.
3. Steam boilers used for heating purposes carrying a pressure of not more than 15 psi, located in private residences or in
apartment houses of fewer than six families.
4. Hot-water heating boilers carrying a pressure of not more than 30 psi, located in private residences or in apartment
houses of fewer than six families.
5. Unfired pressure vessels containing only water under pressure for domestic supply purposes and operated at a temperature
not over 200°F, including those containing air, the compression of which serves only as a cushion.
6. Hot-water supply boilers (water heaters) with less than 100,000 BTU per hour heat input.
InSpeCtIOnS reQUIreD
Item Internal External
Power boilers 1 Year 1 Year*
Low-pressure boilers and hot-water supply boilers 2 Years 2 Years
Unfired pressure vessels (subject to corrosion)
Other unfired pressure vessels:
2 Years 2 Years
The board sets the interval for external inspection of vessels not subject to internal corrosion.
Certificate inspection of such vessels shall be made every two years.
*While under pressure.
InSUranCe InSpeCtIOn reQUIrementS
1. Inspections made by inspectors employed by insurance and owner/user companies and commissioned by the department
are accepted in lieu of inspections made by department inspector.
2. Initial inspections to new, reinstalled, and secondhand high-pressure and low-pressure boilers and lethal service pressure
vessels must be performed by a department deputy inspector.
3. Reports of internal inspections must be filed with the department on a board-approved form within 30 days.
4. Reports of external inspections must be filed with the department on a board-approved form within 30 days.
5. The department must be notified of suspension of insurance on account of dangerous conditions.
6. The department must be notified of new business and discontinuance of insurance.
2013 National Board Synopsis of Boiler and Pressure Vessel Laws, Rules and Regulations