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 09.12.01.34 - Historic Boilers
Universal Citation: MD Code Reg 09.12.01.34
Current through Register Vol. 51, No. 19, September 20, 2024
A. Except as provided for in this regulation, a historical boiler shall be installed, inspected, operated, repaired, or altered in accordance with the NBIC.
B. Inspection.
(1) An initial inspection shall be conducted:
(a) To determine baseline criteria needed for
the operating life of the boiler;
(b) In accordance with the requirements
outlined in the NBIC;
(c) On any
boiler not previously inspected in Maryland; and
(d) On any boiler which has not received a
certificate inspection in Maryland in the previous 2 years.
(2) Except as provided in this
subsection, a historical boiler shall be inspected at the inspection intervals
of the NBIC:
(a) An internal inspection shall
be conducted annually;
(b) An
external inspection shall be conducted annually;
(c) After a repair or alteration, a
historical boiler shall be inspected before operation; and
(d) If an inspection detects a condition
warranting further investigation, an inspector may require further
investigation.
(3)
Before an inspection, an owner shall, upon request, provide the inspector with:
(a) Stress calculations in accordance with
this regulation;
(b) The calculated
factor of safety;
(c) Requested
maximum allowable operating pressure;
(d) The two most recent ultrasonic thickness
examination maps; and
(e) Any other
documentation required by the NBIC.
(4) During an inspection, an inspector may:
(a) Examine all documents pertaining to the
qualifications of the operator; and
(b) Assess an operator's demonstrated
understanding of the operational requirements of the historical
boiler.
C. Hydrostatic Pressure Test.
(1) A historical
boiler shall be hydrostatically tested to a pressure of not less than the
maximum allowable operating pressure but no more than 1-1/4 times the maximum
allowable operating pressure.
(2)
After a repair or alteration, a historical boiler shall be tested
hydrostatically to a pressure of not less than 1 'A times the maximum allowable
operating pressure but no more than 1 'A times the maximum allowable operating
pressure.
(3) An owner shall supply
the necessary test equipment required by the inspector for the hydrostatic test
including:
(a) Water source, pump, pressure
lines, and calibrated test gauge; and
(b) Plugs, gags, or caps to replace safety
valves or other appurtenances if needed to prevent damage from the required
test pressure.
D. Maximum Allowable Operating Pressure.
(1) The maximum allowable operating pressure
shall be determined by the inspector in accordance with the NBIC and ASME
Code.
(2) The maximum allowable
operating pressure for objects containing wrought iron will be determined by
considering the following:
(a) For pressures
up to 250 psi a temperature allowance is not required; and
(b) For pressures above 250 psi the allowable
stress values shall comply with the requirements of the ASME Code, Section I,
PartPG-23.
(3) The
maximum allowable operating pressure for objects containing materials other
than carbon steel or wrought iron shall be determined in accordance with the
ASME Code.
E. Training.
(1) A person who operates a historical boiler
shall retain a written record of their training.
(2) Upon request, a person who operates a
historical boiler shall provide the Chief Boiler Inspector with a copy of their
training record.
F. Historical boilers with a certificate of inspection issued by another jurisdiction may operate in Maryland under the following circumstances:
(1) An owner of a historical boiler may
request that the Chief Boiler Inspector recognize a certificate of inspection
issued by another jurisdiction;
(2)
In evaluating a request for recognition of a certification of inspection by the
other jurisdiction, the Chief Boiler Inspector may conduct an inspection of a
historical boiler to verify:
(a) Compliance
with the NBIC; and
(b) Satisfaction
of safety requirements that are equal to or greater than Maryland's
requirements;
(3) If the
Chief Boiler Inspector conducts an inspection to evaluate a historical boiler
with a certificate of inspection from the other jurisdiction, the Chief Boiler
Inspector shall examine the following:
(a)
Verification and validation of the certificate of inspection from the other
jurisdiction;
(b) Examination of
all documents required by this regulation and by the NBIC;
(c) Examination of all documents pertaining
to the qualifications of the operator;
(d) Demonstrated understanding of the
operational requirements by the operator of the historical boiler;
and
(e) Other tests at the
discretion of the inspector including but not limited to:
(i) An external inspection;
(ii) A determination of the maximum allowable
operating pressure in Maryland; and
(iii) Operation at the maximum allowable
operating pressure in Maryland; and
(4) If the Chief Boiler Inspector determines
that a historical boiler with a certificate of inspection issued by another
jurisdiction is in compliance with safety requirements that are equal to or
greater than Maryland, the Chief Boiler Inspector shall issue a certificate of
inspection.
G. A historical portable steam boiler shall not be operated at a pressure greater than:
(1) 15 psigwhen being moved at a speed
of 5 miles per hour or less; and
(2) zero psig when being moved at a speed
greater than 5 miles per hour.
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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