The following words and terms, when used in this chapter, shall
have the following meanings, unless the context clearly indicates
otherwise.
(1) Alteration--A change in the item described on the
original Manufacturer's Data Report which affects the pressure containing
capability of the pressure retaining item. Nonphysical changes such
as an increase in the maximum allowable working pressure (internal
or external), increase in design temperature, or a reduction in minimum
temperature of a pressure-retaining item is considered an alteration.
(2) Application for Certification--The completed first
inspection report.
(3) Approved--Agreed to by the executive director.
(4) ASME--The American Society of Mechanical Engineers
Boiler and Pressure Vessel Code, code cases, and interpretations adopted
by the council of the society.
(5) Authorized Inspection Agency (AIA) (In-service)--An
entity accredited by the National Board meeting NB-369, "Qualifications
and Duties for Authorized Inspection Agencies Performing In-service
Activities and Qualifications for Inspectors of Boilers and Pressure
Vessels."
(6) Authorized Inspection Agency (AIA) (New Construction--ASME
Activities)--An entity accredited by the National Board meeting the
qualification and duties of NB-360, "Criteria for Acceptance of Authorized
Inspection Agencies for New Construction."
(7) Authorized Inspector (AI)--An inspector qualified
to be employed by an Authorized Inspection Agency (AIA) who holds
a commission issued by the executive director.
(8) AWP--The allowable working pressure at which the
boiler can safely operate.
(9) Blowdown separator--a pressure vessel used to capture
boiler blowdown water for the purpose of reducing the boiler blowdown
water temperature and pressure. The cooling of the blowdown water
occurs by mixing cooling water with the blowdown water.
(10) Blowdown tank--A pressure vessel used to capture
boiler blowdown water for the purpose of reducing the boiler blowdown
water temperature and pressure. The cooling of the blowdown water
occurs over time.
(11) Blowdown water--Boiler water that contains dissolved
solids and sludge.
(12) Board--The Board of Boiler Rules.
(13) "Boiler" means:
(A) a heating boiler;
(B) a nuclear boiler;
(C) a power boiler;
(D) an unfired steam boiler; or
(E) a process steam generator.
(14) Boiler external piping--The piping which begins
where the ASME Code Section I or Section VIII, Division 1, 2, or 3
boiler proper or separately fired superheater terminates at:
(A) the first circumferential joint for welding end
connections; or
(B) the face of the first flange in bolted flange connections;
or
(C) the first threaded joint in that type of connection;
and which extends up to and including the valve or valves required
by ASME.
(15) Certificate inspection--The required internal
or external boiler inspection, the report of which is used by the
chief inspector to decide whether to issue a certificate of operation.
(16) Certificate of operation--A certificate issued
by the executive director to allow the operation of a boiler.
(17) Changeover valve--A valve that allows two redundant
pressure relief valves to be installed for the purpose of changing
from one pressure relief valve to the other while the boiler is operating
and designed such that there is no intermediate position where both
pressure relief valves are isolated from the boiler.
(18) Chief inspector--The inspector appointed in accordance
with Texas Health and Safety Code, §755.023.
(19) Code--ASME Code.
(20) Commission--The Texas Commission of Licensing
and Regulation.
(21) Competent attendant--An individual who has been
trained to properly operate, start up, shut down, respond to emergencies
and maintain control of the boiler in safe operating condition.
(22) Condemned boiler--A boiler inspected and declared
unfit for further service by the chief inspector, the deputy inspector,
or the executive director.
(23) Continuous water treatment--A verifiable program
that controls and limits corrosion and deposits in a boiler.
(24) Department--Texas Department of Licensing and
Regulation.
(25) Deputy inspector--An inspector appointed by the
executive director.
(26) Disconnected boiler--A boiler in which all fuel,
water, steam and electricity are removed from any connection on the
boiler. These connections must provide an isolated gap and the source
must be safely isolated to prevent potential leaks or electrical hazards.
(27) Electric boiler--A boiler in which the source
of heat is electricity, such as an electrode type boiler and an immersion
resistance element type boiler.
(28) Electrode type boiler--An electric boiler in which
heat is generated by the passage of electric current using water as
the conductor.
(29) Executive director--The executive director of
the department.
(30) External inspection--An inspection of the exterior
of a boiler and its appurtenances that is made, if possible, while
the boiler is in operation.
(31) Heat Recovery Steam Generator (HRSG)--A boiler
which produces steam where its principle source of thermal energy
is a hot gas stream having high ramp rates, such as the exhaust of
a gas turbine.
(32) Heating boiler--A steam heating boiler, hot water
heating boiler, hot water supply boiler, or potable water heater that
is directly fired with oil, gas, solar energy, electricity, coal,
or other solid or liquid fuel.
(33) High-temperature water boiler--A water boiler
designed for operation at pressures exceeding 160 pounds per square
inch gage (1100 kilopascals) or temperatures exceeding 250 degrees
Fahrenheit (121 degrees Celsius).
(34) Hot water heating boiler--A boiler designed for
operation at a pressure not exceeding 160 pounds per square inch gage
(1100 kilopascals) or temperatures not exceeding 250 degrees Fahrenheit
(121 degrees Celsius) at or near the boiler outlet.
(35) Hot water supply boiler--A boiler designed for
operation at pressures not exceeding 160 pounds per square inch gage
(1100 kilopascals) or temperatures not exceeding 250 degrees Fahrenheit
(121 degrees Celsius) at or near the boiler outlet if the boiler's
heat input exceeds 200,000 British thermal units per hour (58.6 kilowatts);
water temperature exceeds 210 degrees Fahrenheit (99 degrees Celsius);
or nominal water-containing capacity exceeds 120 gallons (454 Liters).
(36) Immersion resistance element type boiler--An electric
boiler in which heat is generated by the passage of an electric current
through a resistance heating element immersed in water.
(37) Inspection agency--An Authorized Inspection Agency
(AIA) providing inspection services.
(38) Inspector--The chief inspector, a deputy inspector,
or an Authorized Inspector (AI).
(39) Install--To place, position or fit a boiler into
position and then to connect, change or modify the boiler to enable
the boiler to be brought into service.
(40) Installation--The act of installing a boiler or
associated equipment.
(41) Internal inspection--A complete and thorough inspection
of the interior waterside and fireside areas of a boiler as construction
allows.
(42) Maximum Allowable Working Pressure (MAWP)--The
greatest pressure at which a boiler is designed to operate.
(43) Metric (SI)--An international system of measurement.
(44) Metrication--The process of converting between
US customary units and metric (SI) units.
(45) Modular boiler--A steam or hot water heating assembly
consisting of a group of individual boilers called modules, intended
to be installed as a unit, with a single inlet and single outlet.
Modules may be under one jacket or may be individually jacketed.
(46) Multiple pressure steam generator--A boiler consisting
of several sections of heat exchange surface designed for different
pressure levels.
(47) National Board--The National Board of Boiler and
Pressure Vessel Inspectors.
(48) National Board Inspection Code (NBIC)--The manual
for boiler and pressure vessel inspectors published by the National
Board of Boiler and Pressure Vessel Inspectors.
(49) Nominal--The accepted ASME standard used to designate
a size or capacity of an item.
(50) Non-code boiler--A complete boiler not constructed
to the appropriate ASME Code.
(51) Nonstandard boiler--A boiler that does not qualify
as a standard boiler.
Cont'd... |
