815 KAR 15:010 - [Effective 6/2/2026] Definitions for 815 KAR Chapter 15
RELATES TO: KRS Chapter 236
NECESSITY, FUNCTION, AND CONFORMITY: KRS 236.030 requires the commissioner to promulgate administrative regulations that establish reasonable standards for the safe construction, installation, inspection, and repair of boilers, pressure vessels, and pressure piping. This administrative regulation establishes the definitions for terms used in 815 KAR Chapter 15.
Section 1. Definitions.
(1) "ASME" is defined by KRS 236.010(5).
(2) "ASME Boiler and
Pressure Vessel Code" or "ASME Code" means the American Society of Mechanical
Engineers Boiler and Pressure Vessel Codes as follows, including all cited code
cases, appendices, and addenda, which are incorporated by reference in 815 KAR 15:025 and 815 KAR 15:026:
(a) Section I,
rules for construction of power boilers;
(b) Section II, material specifications:
1. Part A specifications for ferrous
materials;
2. Part B specifications
for nonferrous materials;
3. Part C
specifications for welding rods, electrodes, and filler metals; and
4. Part D Properties (Customary);
(c) Section IV, Rules for
construction of heating boilers;
(d) Section V, nondestructive
examination;
(e) Section VIII,
rules for construction of pressure vessels, Division 1, Division 2, and
Division 3;
(f) Section IX, welding
and brazing qualifications; and
(g)
Section X, Fiber-Reinforced Plastic Pressure Vessels.
(3) "Authorized inspector" means an inspector
holding the appropriate endorsement on the National Board Commission to perform
new construction shop inspections.
(4) "Boiler" is defined by KRS 236.010(1).
(5) "Boiler and
pressure vessel contractor" means the holder of a boiler and pressure vessel
contractor license as issued by the department pursuant to KRS 236 and 815
Chapter 8.
(6) "Boiler Inspection
Section" means the section within the Division of Plumbing, Department of
Housing, Buildings and Construction.
(7) "Boiler inspector" is defined by KRS 236.010(14).
(8) "Certificate
inspection" is defined by KRS 236.010(7).
(9) "Chief boiler inspector" is defined by
KRS 236.010(13).
(10) "Code boiler
or pressure vessel" means a boiler or pressure vessel that bears the ASME Code
Symbol stamp and designator. (See also "state special.")
(11) "Commission" means the written
credential issued by the department to a boiler inspector, special boiler
inspector, or owner-user inspector pursuant to KRS 236.070, 236.080, or
236.095.
(12) "Commissioner" is
defined by KRS 236.010(3).
(13)
"Deaerator tank" means a pressure vessel in which water is heated, usually by
steam, so that any dissolved oxygen is removed from the water.
(14) "Department" is defined by KRS 236.010(4).
(15) "Existing
installations" means any boilers and associated piping systems completed and
approved for operation prior to July 1, 1970, or pressure vessels and
associated piping systems completed and approved for operation prior to July
15, 1980.
(16) "External
inspection" means an inspection made while a boiler or pressure vessel is in
operation and under pressure.
(17)
"Heat recovery boiler" means a boiler in which the source of heat is from
another process.
(18) "Heating
boiler" is defined by KRS 236.010(1)(c).
(19) "High pressure, high temperature water
boiler" is defined by KRS 236.010(1)(b).
(20) "Hot water heating boiler" means a
boiler from which hot water is circulated for heating purposes and returned to
the boiler and that operates at a pressure not exceeding 160 psig or a
temperature of 250 degrees Fahrenheit at or near the boiler outlet.
(21) "Hot water storage tank" means a
pressure vessel, unfired but connected to and subject to the same pressures as
a companion hot water supply boiler, the combination being used to heat and
store hot water for use externally to itself.
(22) "Hot water supply boiler" means a boiler
completely filled with water that furnishes hot water to be used externally to
itself at pressures not exceeding 160 psig or at temperatures not exceeding 210
degrees Fahrenheit at or near the boiler outlet.
(23) "Hydrostatic test" means the activity of
filling a boiler, pressure vessel, or associated piping with water and raising
the pressure within the system to check for tightness or mechanical
integrity.
(24) "Internal
inspection" means an inspection made under circumstances that the boiler or
pressure vessel is not operating and hand holes or manways are open for
inspection of internal portions of the boiler or pressure vessel as
construction permits.
(25)
"Jacketed kettle" means a pressure vessel with inner and outer walls that is
subject to water or steam pressure and is used to boil or heat liquids and to
cook food.
(26) "Lined potable
water boiler" means a water boiler with a corrosion resistant lining used to
supply potable hot water.
(27)
"MAWP" is defined by KRS 236.010(23).
(28) "National Board (NB)" means the National
Board of Boiler and Pressure Vessel Inspectors.
(29) "Noncode boiler or pressure vessel "
means a boiler or pressure vessel that does not bear the ASME code symbol stamp
and designator. (See also "state special.")
(30) "Owner-user inspector" means an
inspector commissioned by the department and employed by a company operating a
pressure vessel within the Commonwealth and meeting the requirements
established in KRS 236.095(1).
(31)
"Owner or user" means any person, firm, or corporation owning or operating a
boiler or pressure vessel within this Commonwealth.
(32) "Owner's piping inspector" is defined by
KRS 236.010(25).
(33) "Power
boiler" is defined by KRS 236.010(1)(a).
(34) "Pressure piping" means the connecting
piping emanating from the associated boiler or pressure vessel and includes
piping as covered pursuant to the ASME Boiler and Pressure Vessel Code,
Sections I and IV; Pressure Vessel Code, Section VIII, Division I, 2, or 3.
These piping codes include:
(a) Power Piping
Code ASME B31.1;
(b) Process Piping
Code ASME B31.3;
(c) Refrigeration
Piping and Heat Transfer Components Code ASME B31.5;
(d) Building Services Piping Code ASME B31.9;
and
(e) Hydrogen Piping and
Pipelines Code ASME B31.12.
(35) "Pressure vessel" is defined by KRS 236.010(2).
(36) "Pressure vessels
for human occupancy" or "PVHO" means all pressure vessels that enclose a human
within its pressure boundary while under internal or external pressure
exceeding a differential pressure of 2 psi. PVHOs include decompression or
recompression chambers, high altitude chambers, hypobaric or hyperbaric
chambers, hyperbaric stretchers, medical hyperbaric oxygenation facilities, and
personnel transfer capsules.
(37)
"PSI (psi)" means pounds per square inch.
(38) "PSIG (psig)" means pounds per square
inch gauge.
(39) "Reinstalled
boiler or pressure vessel" means a boiler or pressure vessel removed from its
original setting and re-erected at the same location or erected at a new
location without change of ownership.
(40) "Repair" means the work necessary to
restore pressure-retaining items to a safe and satisfactory operating condition
to comply with the National Board Inspection Code incorporated by reference in
815 KAR 15:026.
(41) "Secondhand
boiler or pressure vessel" means a boiler or pressure vessel in which both the
location and ownership have been changed after initial use.
(42) "Special boiler inspector" is defined by
KRS 236.010(15).
(43) "State
special" means a boiler or pressure vessel that carries neither the ASME Boiler
and Pressure Vessel Code symbol nor National Board registration but has been
accepted by the department pursuant to 815 KAR 15:025, Section 4.
(44) "V-R stamp holder" means the holder of a
certificate issued by the National Board to repair pressure relief
valves.
Notes
STATUTORY AUTHORITY: KRS 236.030
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