Code of Maryland Regulations
Title 09 - MARYLAND DEPARTMENT OF LABOR
Subtitle 12 - DIVISION OF LABOR AND INDUSTRY
Chapter 09.12.01 - Board of Boiler Rules
Section 09.12.01.01 - Definitions
Universal Citation: MD Code Reg 09.12.01.01
Current through Register Vol. 51, No. 19, September 20, 2024
A. In these regulations, the following terms have the meanings indicated.
B. Terms Defined.
(1) "ASME Code" means the "ASME Boiler and
Pressure Vessel Code" of the American Society of Mechanical Engineers with
revisions, amendments, and interpretations adopted by the Board of Boiler
Rules.
(2) "Antique boiler" means
a boiler that is:
(a) Fabricated and stamped:
(i) In accordance with the ASME Code or
another nationally recognized boiler construction standard; and
(ii) More than 30 years before the date of
the inspection;
(b)
Operated primarily for demonstration, exhibition, or instructional purposes and
not for profit; or
(c) Constructed,
inspected, and stamped in accordance with the ASME Code and registered with the
National Board of Boiler and Pressure Vessels Inspectors to replace a
historical boiler.
(3)
"Approved" means approved by the Board of Boiler Rules.
(4) "Authorized Inspection Agency " means an
entity that:
(a) Is accredited in accordance
with the National Board of Boiler and Pressure Vessel Inspectors NB-369,
Qualifications and Duties for Authorized Inspection Agencies Performing
Inservice Inspection Activities and Qualifications for Inspectors of Boilers
and Pressure Vessels;
(b) Is
accredited in accordance with the National Board of Boiler and Pressure Vessel
Inspectors NB-371, Accreditation of Owner-User Inspection Organizations (OUIO);
or
(c) Meets the qualifications and
definition of the National Board of Boiler and Pressure Vessel Inspectors
NB-360, Criteria for Acceptance of Authorized Inspection Agencies for New
Construction.
(5)
"Authorized Insurer" means an authorized inspection agency licensed to insure
boilers and pressure vessels in Maryland.
(6) "Board" means the Board of Boiler Rules.
(7) "Boiler external piping"
means piping which:
(a) Begins where the
boiler proper terminates at the:
(i) First
circumferential joint for welded end connections;
(ii) Face of the first flange in bolted
flanged connections; or
(iii) First
threaded joint in threaded connections; and
(b) Extends up to and including the valve or
valves required by Section or Section IV of the ASME Code.
(8) "Certificate of Competency" means a
certificate issued by the Chief Boiler Inspector indicating the suitability and
fitness of an individual to inspect boilers and pressure vessels in Maryland.
(9) "Certificate inspection "
means an inspection the report of which is used by the Chief Boiler Inspector
to determine whether to issue a certificate.
(10) "Certificate of inspection for repair or
alteration " means the certificate inspection performed after a repair or
alteration to determine suitability of the object for return to service.
(11) "Commissioner" means the
Commissioner of Labor and Industry.
(12) "Condemned boiler or pressure vessel"
means a boiler or pressure vessel that has been inspected and declared unsafe
or declared disqualified under legal requirements by an inspector who is
authorized to take such action and who has applied a stamp or mark designating
condemnation.
(13) "Electric
boiler" means a boiler in which the source of heat is electricity.
(14) "Existing boiler or pressure vessel
installation " means:
(a) A boiler
constructed, installed, placed in operation, or contracted for before July 1,
1969, excluding antique boilers, historical boilers or model steam boilers;
or
(b) A pressure vessel
constructed, installed, placed in operation, or contracted for before January
1, 1974, excluding antique boilers, historical boilers or model steam boilers.
(15) "External
inspection" means an inspection made when a boiler or pressure vessel is in
operation.
(16) "Follow up
inspection" means an inspection performed after a boiler or pressure vessel has
been determined to be nonconforming with applicable laws and regulations.
(17) Heating Boiler.
(a) "Heating boiler" means:
(i) A steam boiler that operates at pressures
not exceeding 15 PSIG; or
(ii) A
hot water boiler operated at pressures not exceeding 160PSIG or temperatures
not exceeding 250°F at or near the boiler outlet.
(b) "Heating boiler" includes a vessel used
in connection with it as an expansion tank.
(18)
"High-pressure, high-temperature water boiler" means a water boiler that
operates at pressures exceeding 160 PSIG or temperatures exceeding 250°F at
or near the boiler outlet.
(19)
"Historical boiler" means a boiler that is:
(a) Riveted and/or welded
construction;
(b) Not under the
jurisdiction of the Federal Railroad Administration;
(c) Not used for profit; and
(d) An antique boiler, steam tractor,
traction engine, hobby steam boiler, or portable steam boiler that is
preserved, restored, and maintained for demonstration, viewing, or educational
purposes.
(20) "Hobby
steam boiler" means a model steam boiler.
(21) "Hot water heating boiler" means a
heating boiler furnishing hot water circulated to return to itself.
(22) "Hot water supply boiler" means a
heating boiler furnishing hot water for use external to itself.
(23) "Individually fabricated" means
constructed, inspected, and stamped in accordance with the ASME Code, or other
standard accepted by the Chief Boiler Inspector.
(24) "Inspector" means the chief boiler
inspector, a deputy boiler inspector, or a special inspector.
(25) "Installer" means an individual, firm,
association, corporation, or other entity that installs or constructs boilers
or pressure vessels.
(26) "Internal
inspection" means an examination as complete as pas.s/We of the internal and
external surfaces of a boiler or pressure vessel conducted while it is not in
operation, and with all manhole plates, hand hole plates, and other coverings
of inspection openings removed.
(27) "Kitchen" means an area used for the
preparation or processing of food for human consumption.
(28) "Kitchen equipment boiler" means a
boiler located in a kitchen, and used for cooking or related
purposes.
(29) "Lap-seam crack"
means a crack in a lap-seam of a boiler or pressure vessel parallel to a
longitudinal joint, either between or adjacent to rivet holes.
(30) "Maryland inspection report form" means
the form submitted by an inspector and available on the Department's
website.
(31) "Miniature boiler"
means a boiler when none of the following limitations are exceeded:
(a) 16 inches inside diameter of
shell;
(b) 20 square feet heating
surface, except for an electric boiler;
(c) 5 cubic feet gross volume, exclusive of
casing and insulation; and
(d) 100
psig maximum allowable working pressure.
(32) "Model steam boiler" means a boiler that
is individually fabricated for non-commercial use and that is used primarily
for demonstration, exhibition, or educational purposes, and not used for
profit.
(33) "Maximum allowable
operating pressure" means the maximum pressure at which a boiler or pressure
vessel is permitted to operate as determined by an inspector after an
inspection and which is equal to or less than the maximum allowable working
pressure.
(34) "Maximum allowable
working pressure" means the maximum pressure at which a boiler or pressure
vessel is designed to operate as determined by the manufacturer in accordance
with the construction code.
(35) "Modular boiler
system" means a series of boiler units specifically designed to be used
singularly or together in sequential operation.
(36) "National Board"
means the National Board of Boiler and Pressure Vessel Inspectors.
(37) "NBIC" means the National Board
Inspection Code.
(38) "New boiler
or pressure vessel installation " means:
(a) A
boiler constructed, installed, placed in operation, or contracted for after
July 1, 1969; or
(b) A pressure
vessel constructed, installed, placed in operation, or contracted for after
January 1, 1974.
(39) "Nonstandard
boiler or pressure vessel" means a boiler or pressure vessel that does not bear
the stamp of:
(a) Maryland;
(b) Another jurisdiction which has adopted a
standard of construction equivalent to that required by the Board of Boiler
Rules;
(c) The ASME; or
(d) The National Board.
(40) "Owner" means a person, firm, or
corporation owning or operating a boiler or pressure vessel within Maryland.
(41) "Owner-user inspection
service " means an owner of a boiler or pressure vessel in Maryland, who
maintains a regularly established inspection department whose inspection
procedures meet the applicable requirements of the National Board of Boiler and
Pressure Vessel Inspectors and are acceptable to the Board.
(42) "Person" means an installer, owner, or
operator of a boiler or pressure vessel, a repair organization, or a company
licensed to insure or inspect boilers and pressure vessels in the
State.
(43) "Portable boiler or
pressure vessel" means a boiler or pressure vessel that is not historical but
meets the following requirements:
(a) Is set
on a frame, platform or trailer; and
(b) Is designed to be moved to different
locations for use.
(44)
"Portable steam boiler" means a historical boiler that is:
(a) Not self-propelled;
(b) Set on a frame, platform, or trailer;
and
(c) Designed to be moved to
different locations for use.
(45) "Power boiler" means a boiler in which
steam or other vapor is generated at a pressure of more than 15 PSIG, and
includes a high-pressure, high-temperature water boiler.
(46) "PSIG" means pounds per square inch
gauge.
(47) "Standard boiler or
pressure vessel" means a boiler or pressure vessel that:
(a) Bears the stamp of Maryland;
(b) Bears the stamp of another jurisdiction
which has adopted a standard of construction equivalent to that required by the
Board of Boiler Rules;
(c) Bears
the stamps of both ASME and the National Board; or
(d) Is of equivalent safe construction
acceptable to the Board.
(48) "Used boiler or pressure vessel" means a
boiler or pressure vessel which has been removed from its original setting and
reinstalled at the same or different location.
(49) "Water heater"
means a closed vessel with openings through which water may flow and includes:
(a) An apparatus by which heat is
generated;
(b) Controls necessary
to prevent pressures greater than 160 psig and water temperatures greater than
210 degrees F; and
(c) Potable
water that is withdrawn for external use.
(50) "Workday" means a day that is not a
Saturday, a Sunday, or a State holiday.
Disclaimer: These regulations may not be the most recent version. Maryland may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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