                                 CODE OF VIRGINIA

EXEMPTIONS (§ 40.1-51.8)

The provisions of this article shall not apply to any of the following:

1. Boilers or unfired pressure vessels owned or operated by the federal
government or any agency thereof;

2. Boilers or fired or unfired pressure vessels used in or on the property of
private residences or apartment houses of less than four apartments;

3. Boilers of railroad companies maintained on railborne vehicles or those used
to propel waterborne vessels;

4. Hobby or model boilers as defined in &#xA7; 40.1-51.19:1;

5. Hot water supply boilers, water heaters, and unfired pressure vessels used as
hot water supply storage tanks heated by steam or any other indirect means when
the following limitations are not exceeded:
			a. A heat input of 200,000 British thermal units per hour;
			b. A water temperature of 210&#xB0; Fahrenheit;
			c. A water-containing capacity of 120 gallons;

6. Unfired pressure vessels containing air only which are located on vehicles or
vessels designed and used primarily for transporting passengers or freight;

7. Unfired pressure vessels containing air only, installed on the right-of-way
of railroads and used directly in the operation of trains;

8. Unfired pressure vessels used for containing water under pressure when either
of the following are not exceeded:
			a. A design pressure of 300 psi; or
			b. A design temperature of 210&#xB0; Fahrenheit;

9. Unfired pressure vessels containing water in combination with air pressure,
the compression of which serves only as a cushion, that do not exceed:
			a. A design pressure of 300 psi;
			b. A design temperature of 210&#xB0; Fahrenheit; or
			c. A water-containing capacity of 120 gallons;

10. Unfired pressure vessels containing air only, providing the volume does not
exceed eight cubic feet nor the operating pressure is not greater than 175
pounds;

11. Unfired pressure vessels having an operating pressure not exceeding fifteen
pounds with no limitation on size;

12. Pressure vessels that do not exceed:
			a. Five cubic feet in volume and 250 pounds per square inch gauge pressure;
			b. One and one-half cubic feet in volume and 600 pounds per square inch gauge
pressure; and
			c. An inside diameter of six inches with no limitations on gauge pressure;

13. Pressure vessels used for transportation or storage of compressed gases when
constructed in compliance with the specifications of the United States
Department of Transportation and when charged with gas marked, maintained, and
periodically requalified for use, as required by appropriate regulations of the
United States Department of Transportation;

14. Stationary American Society of Mechanical Engineers (ASME) LP-Gas containers
used exclusively in propane service with a capacity that does not exceed 2,000
gallons if the owner of the container or the owner&#8217;s servicing agent:
			a. Conducts an inspection of the container not less frequently than every
five years, in which all visible parts of the container, including insulation or
coating, structural attachments, and vessel connections, are inspected for
corrosion, distortion, cracking, evidence of leakage, fire damage, or other
condition indicating impairment;
			b. Maintains a record of the most recent inspection of the container
conducted in accordance with subdivision a; and
			c. Makes the records required to be maintained in accordance with subdivision
b available for inspection by the Commissioner;

15. Unfired pressure vessels used in and as a part of electric substations owned
or operated by an electric utility, provided such electric substation is
enclosed, locked, and inaccessible to the public; or

16. Coil type hot water boilers without any steam space where water flashes into
steam when released through a manually operated nozzle, unless steam is
generated within the coil or unless one of the following limitations is
exceeded:
			a. Three-fourths inch diameter tubing or pipe size with no drums or headers
attached;
			b. Nominal water containing capacity not exceeding six gallons; and
			c. Water temperature not exceeding 350&#xB0; Fahrenheit.

HISTORY: 1972, c. 237; 1977, c. 301; 1978, c. 355; 1986, c. 211; 1988, c. 289;
1990, c. 226; 1993, c. 543; 1999, c. 335; 2000, c. 898; 2012, c. 332; 2013, c.
171.