§ 14-12-2. Definitions.

For the purposes of this chapter, the following definitions shall apply:

Approved means approved by the board of boiler rules.

A.S.M.E. Boiler and Pressure Vessel Code means the Boiler and Pressure Vessel Code of the American Society of Mechanical Engineers, 1983 Edition.

Board or board of boiler rules means the board created by section 14-12-4 and empowered to recommend to the city council rules and regulations and amendments to the rules and regulations and interpret rules and regulations for the safe and proper construction, installation, inspection, repair and use of boilers and unfired pressure vessels in this city.

Boiler, except where the context clearly indicates otherwise, means and includes a closed vessel or vessels intended for use in heating water or other liquids or for generating steam or other vapors under pressure or vacuum by the direct application of heat from combustible fuels, electricity or nuclear energy and shall also include an unfired pressure vessel, meaning a vessel in which pressure is obtained from an external source or from an indirect application of heat.

Certificate of competency means a certificate issued to a person who has passed an examination prescribed by the board of boiler rules.

Certificate of inspection means an inspection upon which an inspection certificate may be issued.

City boiler and pressure vessel construction code is used to designate the accepted reference for construction, installation, operation and inspection of boilers and unfired pressure vessels and will be referred to as the city boiler and pressure vessel construction code, which is practically the same as the A.S.M.E. Boiler and Pressure Vessel Construction Code.

Condemned boiler or unfired pressure vessel means a boiler or unfired pressure vessel that has been inspected and declared unsafe or disqualified by legal requirements by an inspector qualified to take such action who has applied a stamping or marking designating its rejection.

Deputy inspector means any deputy or assistant to the chief inspector, as defined herein.

Director means the director of the Memphis and Shelby County office of planning and development.

Division means the Memphis and Shelby County office of planning and development.

Existing installations, insofar as the application of this chapter is concerned, means and includes any boiler or unfired pressure vessel constructed, installed, placed in operation or contracted for before April 12, 1960.

External inspection means an inspection made when a boiler or unfired pressure vessel is in operation.

Fusion welding means a process of welding metals in molten state or matter in vaporous state, without the application of mechanical pressure or blows. Such welding may be accomplished by an oxyacetylene or oxyhydrogen flame or by electric arc. Thermit welding is also classed as fusion welding.

Hot water supply boiler means a boiler furnishing hot water to be used externally to itself.

Inspector means the chief boiler inspector, any deputy inspector or a special inspector.

Internal inspection means an inspection made when a boiler or unfired pressure vessel is shut down and hand holes or manholes opened for inspection of the interior.

Locomotive boiler means a boiler mounted on a self-propelled track locomotive and used to furnish motivating power for traveling on rails. It does not include locomotive cranes, tractors or other self-propelled apparatus.

Low pressure heating boiler means a boiler operated at pressures not exceeding 15 pounds per square inch gauge steam or at pressures not exceeding 160 pounds per square inch gauge and temperatures not exceeding 250 degrees Fahrenheit for water.

Major repairs means those upon which the strength of a boiler or unfired pressure vessel would depend.

Miniature boiler applies to fired pressure vessels, fired and unfired boilers, which do not exceed the following limits:

1.

Sixteen inch inside diameter;

2.

Five cubic feet gross volume, exclusive of the casing and insulation;

3.

Twenty square feet water heating surface;

4.

One hundred pounds per square inch gauge maximum allowable working pressure.

National board means the national board of boiler and pressure vessel inspectors.

New boiler installations means and includes all boilers constructed, installed, placed in operation or contracted for after April 12, 1960.

New unfired pressure vessel installations means and includes all unfired pressure vessels constructed, installed, placed in operation or contracted for after April 12, 1960.

Nonstandard boiler or unfired pressure vessel means a boiler or unfired pressure vessel that does not bear the state stamp, the national board stamping or the stamp of any state or political subdivision which has adopted a standard of construction equivalent to that required by the board of boiler rules.

Owner or user means any person owning or operating any boiler or unfired pressure vessel within this city.

Portable boiler means a fired boiler which is primarily intended for temporary location and the construction and usage of which is obviously portable.

Power boiler means a closed vessel in which steam or other vapor to be used externally to itself is generated at a pressure of more than 15 pounds per square inch gauge by the application of heat.

Reinstalled boiler or unfired pressure vessel means a boiler or unfired pressure vessel removed from its original setting and reerected at the same location or erected at a new location without change of ownership.

Secondhand boiler or unfired pressure vessel means a boiler or unfired pressure vessel of which both the location and ownership have been changed after primary use.

Special inspector means an inspector holding a city commission and who is regularly employed by an insurance company authorized to insure against loss from explosion of boilers and unfired pressure vessels in this city, provided such company complies with the requirements of section 14-12-13.

Standard boiler or unfired pressure vessel means a boiler or unfired pressure vessel which bears the stamp of the city or of a state which has adopted a standard of construction equivalent to that required by the board of boiler rules or a boiler which bears the national board stamp.

Unfired pressure vessel means a vessel in which pressure is obtained from an external source or from an indirect application of heat.

(Code 1967, § 45-2; Code 1985, § 42-2; Ord. No. 1427, § 1, 8-29-1972)