BOILER AND PRESSURE VESSEL REGULATIONS
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Code of Colorado Regulations › 1100 Department of Labor and Employment › 1101 Division of Oil and Public Safety › 7 CCR 1101-5
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DEPARTMENT OF LABOR AND EMPLOYMENT
Division of Oil and Public Safety
BOILER AND PRESSURE VESSEL REGULATIONS
7 CCR 1101-5
[Editor’s Notes follow the text of the rules at the end of this CCR Document.]
_________________________________________________________________________
ARTICLE 1
GENERAL PROVISIONS
Section 1-1
Basis and Purpose
The basis and purpose of these regulations are to establish construction, installation, inspection,
maintenance, and repair requirements for boilers and pressure vessels, establish inspection and
certificate of inspection fees, adopt nationally recognized codes and standards, add or clarify terminology
and add or clarify the duties of owners, users, installers and inspectors in order to ensure the safe
operation of boilers and pressure vessels in Colorado.
Section 1-2
Technical Rationale
The technical requirements of these regulations are generally accepted as national and international
standards governing the minimum levels of acceptability for the initial design, fabrication and certification,
as well as in-service inspection rating, repair, alteration, and re-rating of boilers and pressure vessels.
The adoption of these consistent standards is necessary for the preservation of the public health, safety,
and welfare of the citizens of Colorado.
Section 1-3
Statutory Authority
The amendments to these regulations are created pursuant to §§8-20-101, 9-4-103 and 9-4-109(1)(a) of
the Colorado Revised Statutes (CRS).
Section 1-4
Effective Date
These amended regulations shall be effective on January 1, 2026, and supersede all prior editions.
Section 1-5 Codes
Incorporated by Reference
lic health, safety,
and welfare of the citizens of Colorado.
Section 1-3
Statutory Authority
The amendments to these regulations are created pursuant to §§8-20-101, 9-4-103 and 9-4-109(1)(a) of
the Colorado Revised Statutes (CRS).
Section 1-4
Effective Date
These amended regulations shall be effective on January 1, 2026, and supersede all prior editions.
Section 1-5 Codes
Incorporated by Reference
(a)
The following codes are incorporated by reference. This rule does not include any later
amendments or editions of the standards and codes listed below.
(1)
For the construction of new boilers and pressure vessels, the American Society of
Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Sections I, IV, V, VIII
Divisions 1 and 2 and 3, IX, and X, 2023 edition. Exemptions from the scope of ASME
Section VIII Division 1 remain as listed in the 2023 edition. Copies of these documents
from the ASME are available at the ASME’s website, www.asme.org, Two Park Avenue,
Suite 1600, New York, NY 10016-5990.
Code of Colorado Regulations
Secretary of State
State of Colorado
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(2)
For the installation, in-service inspection, repairs, and alterations of boilers, pressure
vessels and pressure-retaining items, the National Board Inspection Code (NBIC), 2023
edition. . Copies of these documents from the National Board Inspection Code (NBIC) are
available at the National Board of Boiler and Pressure Vessel’s website,
www.nationalboard.org, 1055 Crupper Avenue Columbus, OH 43229.
(3)
For the design, materials, fabrication, erection, test, inspection, operation, and
maintenance of boiler external piping, ASME B31.1, Power Piping, 2024 edition. Copies
of these documents from the ASME are available at the ASME’s website, www.asme.org,
Two Park Avenue, Suite 1600, New York, NY 10016-5990.
Pressure Vessel’s website,
www.nationalboard.org, 1055 Crupper Avenue Columbus, OH 43229.
(3)
For the design, materials, fabrication, erection, test, inspection, operation, and
maintenance of boiler external piping, ASME B31.1, Power Piping, 2024 edition. Copies
of these documents from the ASME are available at the ASME’s website, www.asme.org,
Two Park Avenue, Suite 1600, New York, NY 10016-5990.
(4)
For the installation, inspection, repairs, alterations, rating and re-rating of pressure
vessels and piping used in the petroleum and chemical processing industries:
(A)
For pressure vessels, the API/ASME 510, 10th edition, addenda 1-3. Copies of
these documents from the API are available at the API’s website, www.api.org.
(B)
For pressure piping, the API/ASME 570, 4th edition, addenda 1-4. Copies of
these documents from the API are available at the API’s website, www.api.org.
(5)
For the assembly, installation, maintenance, and operation of controls and safety
devices, ASME CSD-1, 2021 edition. Copies of these documents from the ASME are
available at the ASME’s website, www.asme.org, Two Park Avenue, Suite 1600, New
York, NY 10016-5990.
(A)
ASME CSD-1 applies to all boilers installed, relocated, or returned to service on
or after January 1, 1993. The pertinent edition of ASME CSD-1 is the one
adopted by the Colorado Boiler and Pressure Vessel Regulations at the
installation, re-location, or return to service date. Copies of these documents
from the ASME are available at the ASME’s website, www.asme.org, Two Park
Avenue, Suite 1600, New York, NY 10016-5990.
(6)
NFPA 85, Boiler and Combustion Systems Hazards Code, 2023 edition. Copies of these
documents from the NFPA are available at the NFPAs website, www.nfpa.org, 1
Batterymarch Park, Quincy, Massachusetts U.S. 02169-7471
ocation, or return to service date. Copies of these documents
from the ASME are available at the ASME’s website, www.asme.org, Two Park
Avenue, Suite 1600, New York, NY 10016-5990.
(6)
NFPA 85, Boiler and Combustion Systems Hazards Code, 2023 edition. Copies of these
documents from the NFPA are available at the NFPAs website, www.nfpa.org, 1
Batterymarch Park, Quincy, Massachusetts U.S. 02169-7471
(7)
NB-371, Accreditation of Owner-User Inspection Organizations (OUIO), Rev 10. Copies
of these documents from the National Board Inspection Code (NBIC) are available at the
National Board of Boiler and Pressure Vessel’s website, www.nationalboard.org, 1055
Crupper Avenue Columbus, OH 43229.
(b)
Interested parties may review the referenced incorporated materials by contacting the Program
Manager, Boiler Inspection Program 707 7th Street, Suite 2400, in Denver, Colorado 80202..
(c)
This rule does not include later amendments to or editions of the incorporated material.
(d)
Code cases approved for use by ASME are allowed to be used in the design, fabrication and
testing of boilers and pressure vessels provided acceptance is first obtained from the Director.
(e)
The application for a variance to the codes and standards listed above or to these regulations
shall be made on the form provided by the Director.
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Section 1-6
Definitions
Terms in these regulations shall have the same meaning as those found in Title 4 Article 9 of the
Colorado Revised Statutes. In addition, unless the context otherwise requires:
Alteration - Any change in the item described on the original Manufacturers' Data Report that affects the
pressure-containing capability of the boiler or pressure vessel. Non-physical changes, such as an
increase in the maximum allowable working pressure (internal or external) or design temperature of a
boiler or pressure vessel shall be considered an alteration
ess the context otherwise requires:
Alteration - Any change in the item described on the original Manufacturers' Data Report that affects the
pressure-containing capability of the boiler or pressure vessel. Non-physical changes, such as an
increase in the maximum allowable working pressure (internal or external) or design temperature of a
boiler or pressure vessel shall be considered an alteration. A reduction in minimum temperature, such
that additional mechanical tests are required, shall also be considered an alteration.
Apartment house - A building with multiple family dwelling units, including condominiums and
townhouses, where boilers are located in a common area outside of the individual dwelling units, such as
a boiler room. The exemption for apartment houses with fewer than six units refers to the number of units,
not the number of units served by a boiler. Individual dwelling units are considered residences, such that
any boiler located inside an individual dwelling unit is exempt.
ANSI - The American National Standards Institute.
API - The American Petroleum Institute.
API-certified inspector - An inspector who is certified by the American Petroleum Institute to perform
functions specified in API-510 or API-570.
API-510, Pressure Vessel Inspection Code - The code for maintenance inspection, repair, alteration and
re-rating procedures for pressure vessels used by the petroleum and chemical process industries. API-
510 is published by the American Petroleum Institute and is an approved ANSI standard.
API-570, Piping Inspection Code - The code for maintenance inspection, repair, alteration and re-rating
procedures for process piping used by the petroleum and chemical process industries. API-570 is
published by the American Petroleum Institute and is an approved ANSI standard.
ASME CSD-1 - The national standard entitled Controls and Safety Devices for Automatically Fired Boilers
published by ASME
PI-570, Piping Inspection Code - The code for maintenance inspection, repair, alteration and re-rating
procedures for process piping used by the petroleum and chemical process industries. API-570 is
published by the American Petroleum Institute and is an approved ANSI standard.
ASME CSD-1 - The national standard entitled Controls and Safety Devices for Automatically Fired Boilers
published by ASME.
Boiler - A closed pressure vessel in which a fluid is heated, steam or vapor generated, steam or vapor
superheated, or any combination thereof, under pressure for use external to itself by the direct application
of energy resulting from the combustion of fuel, solid, liquid, or gaseous, or by the use of electricity or
nuclear energy.
Boiler, ASME Section I - A boiler falling under the scope of Section I of the ASME Boiler and Pressure
Vessel Code. These are boilers in which steam or vapor is generated at a pressure more than 15 psig for
use external to itself; or high temperature water boiler intended for operation at pressures exceeding 160
psig and/or temperatures exceeding 250 degrees Fahrenheit.
Boiler, ASME Section IV - A boiler falling under the scope of Section IV of the ASME Boiler and
Pressure Vessel Code. These are steam boilers for operation at pressures not exceeding 15 psi, or hot
water heating / hot water supply boilers for operation at pressures not exceeding 160 psi or temperatures
not exceeding 250 degrees Fahrenheit.
Boiler, electric - A boiler whose source of heat is electricity.
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Boiler external piping – Piping for boilers in which steam or vapor is generated at a pressure more than
15 psig for use external to itself, or a high temperature water boiler intended for operation at pressures
exceeding 160 psig and/or temperatures exceeding 250 degrees Fahrenheit. This piping begins at the
termination of the boiler proper and ends at:
(1)
the first circumferential joint for welding and connections; or
Piping for boilers in which steam or vapor is generated at a pressure more than
15 psig for use external to itself, or a high temperature water boiler intended for operation at pressures
exceeding 160 psig and/or temperatures exceeding 250 degrees Fahrenheit. This piping begins at the
termination of the boiler proper and ends at:
(1)
the first circumferential joint for welding and connections; or
(2)
the face of the first flange in bolted flanged connections; or
(3)
the first threaded joint in that type of connection; and that extends up to and including the
valve or valves as required in ASME B31.1.
Boiler, forced circulation - A boiler requiring forced circulation to prevent overheating and failure of the
tubes or coils.
Boiler, high temperature - A boiler in which water is heated and operates at pressures in excess of 160
psig or temperature in excess of 250 degrees Fahrenheit.
Boiler, hot water heating - A boiler in which no steam is generated and from which hot water is
circulated for heating purposes, then returned to the boiler operating at pressure less than or equal to 160
psig or a temperature less than or equal to 250 degrees Fahrenheit.
Boiler, hot water supply - A boiler that furnishes hot water to be used externally to itself at a pressure
less than or equal to 160 psig or at temperature less than or equal to 250 degrees Fahrenheit and not
returned to the boiler.
Boiler, miniature - Any power boiler that does not exceed any of the following:
●
16 inches inside diameter of shell
●
20 square feet of heating surface
●
Five cubic feet of gross volume exclusive of casing and insulation
●
100 psig maximum allowable working pressure
Boiler, portable or moveable - A boiler permanently affixed to a trailer with wheels or skid-mounted that
is totally self-contained while operating and not attached to any other object for any reason either by pipe,
hose or wire while operating.
Boiler, power - A boiler in which steam or other vapor is generated at pressures in excess of 15 psig for
use external to itself
llowable working pressure
Boiler, portable or moveable - A boiler permanently affixed to a trailer with wheels or skid-mounted that
is totally self-contained while operating and not attached to any other object for any reason either by pipe,
hose or wire while operating.
Boiler, power - A boiler in which steam or other vapor is generated at pressures in excess of 15 psig for
use external to itself.
Boiler, unfired - A steam or other vapor generating system using heat external from itself, usually from
the operation of a processing system or other indirect heat source.
Btu - British thermal unit.
Certificate inspection - An inspection performed by an authorized State or Special Inspector, the report
of which is used as justification for issuing, withholding or revoking the certificate of inspection.
Certificate inspection, initial - The certificate inspection conducted by a State Inspector when a new or
relocated boiler is being placed in service.
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Certificate of inspection - A certificate of inspection, also known as a certificate of boiler operation,
an inspection certificate or an operations certificate, is the certificate issued by the Director
authorizing the operation of a boiler until a specific date.
Condemned - A boiler or pressure vessel determined by an Inspector to be so unsafe that further use is
prohibited until it is satisfactorily repaired or replaced.
Director - The Director of the Colorado Department of Labor and Employment, Division of Oil and Public
Safety or his or her designee.
Existing installation - Any boiler or pressure vessel that has received its initial certificate of inspection.
Grace period - The time when a boiler may legally be operated without a valid certificate of inspection.
Hot water storage tank - A closed vessel connected to a regulated boiler or water heater
o Department of Labor and Employment, Division of Oil and Public
Safety or his or her designee.
Existing installation - Any boiler or pressure vessel that has received its initial certificate of inspection.
Grace period - The time when a boiler may legally be operated without a valid certificate of inspection.
Hot water storage tank - A closed vessel connected to a regulated boiler or water heater. When heated
by steam or any other indirect means, these storage tanks shall comply with ASME construction
requirements if any of the following limitations are exceeded:
●
Heat input of 200,000 Btu/hr
●
Water temperature of 210° F
●
Nominal water-containing capacity of 120 gal
Inspector, State - A person who is employed and authorized by the Director to perform certificate
inspections.
Inspector, Owner-User - A person who holds a valid National Board Owner-User Commission and has
passed the examination prescribed by the National Board or is an API-Certified Inspector under a
jurisdictionally-approved Owner-User Inspection Organization.
Inspector, Special - A person employed by an insurance company licensed to sell or provide insurance
for boilers or pressure vessels in Colorado who holds a valid commission as inspector issued by the
National Board of Boiler and Pressure Vessel Inspectors and is authorized by the Director to inspect
boilers insured by his or her employer.
Installer - A person or company responsible for setting up for use any regulated boiler or pressure
vessel.
Jacketed steam kettle - A pressure vessel with inner and outer walls that is subject to steam pressure
and stress, is used to boil or heat liquids or to cook food, and falls under the scope of ASME Section VIII
Appendix 9 (Jacketed Vessels) or Appendix 19 (Electrically Heated or Gas Fired Jacketed Steam
Kettles).
(a)
A direct-fired jacketed steam kettle is a jacketed steam kettle having its own independent
source of energy, such as gas or electricity, for generating the steam within the jacket’s
walls.
stress, is used to boil or heat liquids or to cook food, and falls under the scope of ASME Section VIII
Appendix 9 (Jacketed Vessels) or Appendix 19 (Electrically Heated or Gas Fired Jacketed Steam
Kettles).
(a)
A direct-fired jacketed steam kettle is a jacketed steam kettle having its own independent
source of energy, such as gas or electricity, for generating the steam within the jacket’s
walls.
(b)
An indirect-fired jacketed steam kettle is one where the steam within the jacket’s walls is
generated external to itself, such as from a boiler.
NBIC - The National Board Inspection Code, also known as ANSI/NB-23.
National Board - The National Board of Boiler and Pressure Vessel Inspectors.
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New installation - Any boiler or pressure vessel that has not received its initial certificate of inspection at
its current location.
NFPA - The National Fire Protection Association.
Non-boiler external piping - Piping outside of the boundary for boiler external piping.
Operations certificate - See certification of inspection.
Out of service - A boiler that has been removed from service in accordance with Section 1-8 of these
regulations. A certificate of inspection is not required for an out-of-service boiler or pressure vessel.
Owner-User Inspection Organization - An owner or user of pressure-retaining items who maintains a
regularly established inspection department, and whose organization and inspection procedures meet the
requirements of the National Board rules or API-510/570 and are acceptable to the Director.
Pressure-retaining item (PRI) - Any boiler, pressure vessel, piping or material used for the containment
of pressure, either internal or external. The pressure may be obtained from an external source, by the
application of heat from a direct source, or any combination thereof.
Pressure Vessel - A container other than a boiler or piping used for the containment of pressure. See
also Section VIII vessel.
PSI - Pounds per square inch
y boiler, pressure vessel, piping or material used for the containment
of pressure, either internal or external. The pressure may be obtained from an external source, by the
application of heat from a direct source, or any combination thereof.
Pressure Vessel - A container other than a boiler or piping used for the containment of pressure. See
also Section VIII vessel.
PSI - Pounds per square inch.
PSIG - Pounds per square inch gage.
Repair - Work necessary to restore pressure-retaining items to a safe and satisfactory operating
condition.
Re-rate - A change in the temperature rating, the maximum allowable working pressure rating, or both, of
a boiler, pressure vessel, or piping that shall be considered an alteration.
Scrapped - A boiler that has been cut into pieces or damaged to the point it cannot be returned to
service, or has been removed from the location.
Section VIII vessel - A pressure vessel falling under the scope of Section VIII of the ASME Boiler and
Pressure Vessel Code.
Stand-by status - A boiler or pressure vessel not in use, but its fuel supply or source of pressure remains
connected. A current certificate of inspection is required for a boiler or pressure vessel in stand-by status.
Water heater, ASME - A closed vessel constructed to ASME Section IV designed to supply potable hot
water which is heated by the combustion of fuels, electricity or any other source and withdrawn for use
external to the system and shall include all controls and devices necessary to prevent pressures greater
than 160 psig and water temperatures greater than 210 degrees Fahrenheit. This system operates at an
input rating that exceeds 200,000 BTUs per hour or has a nominal capacity exceeding 120 gallons. .
Water Heater, forced circulation - A water heater requiring forced circulation to prevent overheating and
failure of the tubes or coils.
Section 1-7
Scope
These regulations apply to all boilers and water heaters as listed in Section 1-7(a), as defined in Section
1-6, except those listed in Section 1-7(b).
ating that exceeds 200,000 BTUs per hour or has a nominal capacity exceeding 120 gallons. .
Water Heater, forced circulation - A water heater requiring forced circulation to prevent overheating and
failure of the tubes or coils.
Section 1-7
Scope
These regulations apply to all boilers and water heaters as listed in Section 1-7(a), as defined in Section
1-6, except those listed in Section 1-7(b).
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(a)
Boilers and pressure vessels as listed in the scope of ASME Sections I, IV and VIII.
(b)
The following are not included in the scope of these regulations:
(1)
Boilers owned or operated by the federal government.
(2)
Locomotive boilers of carriers subject to the Federal Locomotive Inspection Act.
(3)
Boilers located in private residences.
(4)
Boilers located in apartment houses having less than six family units.
(5)
Boilers in any city where city boiler inspectors, record-keeping, and inspection codes are
comparable to the State program where the program has been reviewed and
recommended by the National Board and approved by the Director upon application to
the Director with submission of proof of such comparability.
(6)
Water Heaters that do not exceed any of the following:
(A)
An input rating of 200,000 BTUs per hour.
(B)
A nominal capacity of 120 gallons.
(C)
A design temperature of 210 degrees Fahrenheit.
(7)
A hot-water storage tank heated by steam or other indirect means meeting the
parameters listed in (6) of this Section.
Section 1-8
Removing a Boiler from Service
(a)
Boilers removed from service must be done so in a safe manner. This may be accomplished by
scrapping the boiler or by putting the boiler into out-of-service status. To safely put a boiler into
out-of-service status, physically sever all sources of energy (water, gas, electricity, etc.), cap all
fuel lines and disconnect or remove all electrical lines.
Section 1-8
Removing a Boiler from Service
(a)
Boilers removed from service must be done so in a safe manner. This may be accomplished by
scrapping the boiler or by putting the boiler into out-of-service status. To safely put a boiler into
out-of-service status, physically sever all sources of energy (water, gas, electricity, etc.), cap all
fuel lines and disconnect or remove all electrical lines.
(b)
Prior to placing a boiler back in service, or when a boiler is moved and reinstalled, the boiler shall:
(1)
Comply with currently-adopted codes and standards in these regulations or be upgraded
as determined by the Director.
(2)
Comply with rules and regulations for new installations.
(3)
Successfully pass an inspection conducted by a State boiler inspector.
Section 1-9
Registration Requirements
(a)
All boilers, including reinstalled and second-hand boilers, regardless of code of construction, shall
be registered with the National Board (excluding cast iron boilers and non-standard boilers).
(b)
All fired and unfired pressure vessels, regardless of code of construction, shall be registered with
the National Board, except for the following:
(1)
Vessels installed or re-installed before April 30, 1999.
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(2)
Vessels built to Section VIII, Division 1 of the ASME Boiler and Pressure Vessel Code
bearing the “UM” symbol before January 1, 2003.
(3)
Vessels exempted by these Regulations or adopted codes of construction.
Section 1-10
Notification Requirements
(a)
The owner, user or installer shall report to the Director the location of previously unreported,
newly-installed or relocated boilers by completing the application form supplied by the Director
and submitting it prior to operation. This application form will ensure vital information is obtained,
proper codes are utilized and timely inspections are scheduled. No fee will be charged for
completing this application form.
aller shall report to the Director the location of previously unreported,
newly-installed or relocated boilers by completing the application form supplied by the Director
and submitting it prior to operation. This application form will ensure vital information is obtained,
proper codes are utilized and timely inspections are scheduled. No fee will be charged for
completing this application form.
(b)
The owner, user or insurer of any existing boiler or pressure vessel shall report to the Director
any boiler that is taken out of service or scrapped within 30 days in the format required by the
Director.
Section 1-11
Repairs
(a)
Repairs to pressure relief valves shall be made only by an organization that holds a valid
Certificate of Authorization for use of the National Board Pressure Relief Valve Repair “VR”
symbol stamp in accordance with the regulations set forth in the National Board Inspection Code.
The initial installation testing and adjustments of a new pressure relief valve on a boiler or
pressure vessel are not considered a repair if made by the manufacturer or assembler of the
valve.
(b)
Welded repairs and alterations to boilers and pressure vessels shall be made only by an
organization that holds a valid Certificate of Authorization for use of the National Board Repair “R”
symbol stamp in accordance with the regulations set forth in the National Board Inspection Code
or the API Pressure Vessel Inspection Code (API-510), as applicable.
(c)
The Director recommends that repairs to non-boiler external piping be made only by an
organization with a written quality system manual enlisting the features of a quality system
described within the NBIC.
Section 1-12
Boilers and Water Heaters
in accordance with the regulations set forth in the National Board Inspection Code
or the API Pressure Vessel Inspection Code (API-510), as applicable.
(c)
The Director recommends that repairs to non-boiler external piping be made only by an
organization with a written quality system manual enlisting the features of a quality system
described within the NBIC.
Section 1-12
Boilers and Water Heaters
(a)
Newly installed or replacement boilers and water heaters installed after January 1, 2026, shall
have the following:
(1)
Manually-operated remote shutdown switch(es) or circuit breaker which shall be located
just outside the equipment water heater room door(s) and marked for easy identification.
If the potential for tampering exists, the switch(es) shall be located just inside the door. If
there is more than one door to the equipment water heater room, there shall be a switch
located at each door. The emergency shutdown switch(s) or circuit breaker shall
immediately shut off the fuel or energy supply.
(2)
Carbon monoxide detection with an audible alarm in equipment rooms containing fuel
fired boilers or water heaters.
(3)
A method of controlling the pH of the condensate prior to its discharge into a sewer
system on applicable equipment.
(4)
A manually operated fuel shut off valve within six feet of the unit that is readily accessible
from the floor.
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Section 1-13
Forced-Circulation Water Heaters
g fuel
fired boilers or water heaters.
(3)
A method of controlling the pH of the condensate prior to its discharge into a sewer
system on applicable equipment.
(4)
A manually operated fuel shut off valve within six feet of the unit that is readily accessible
from the floor.
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Section 1-13
Forced-Circulation Water Heaters
(a)
All water tube or coil-type water heaters requiring forced circulation shall have the following: a
n accepted safety control to prevent burner operation at a flow rate inadequate to protect the
water heater unit against overheating, at all allowable firing rates. This safety control shall shut
down the burner and prevent restarting until an adequate flow is restored. Positive means shall
be provided to determine, during testing, that the accepted safety control has functioned upon an
inadequate flow condition.
ARTICLE 200 INSPECTIONS
Section 2-1
Inspection Schedule
(a)
All new and reinstalled boilers shall receive an initial certificate inspection by a State Inspector.
Upon successful installation, completion of inspection and payment of fees, the Director shall
issue a certificate of boiler and pressure vessel inspection.
(b)
Pursuant to 9-4-108 CRS, all owners or responsible parties of regulated boilers shall allow access
for inspection of a boiler as requested by a State or Special Inspector.
(c)
Except as permitted in (c)(1) of this Section, power boilers and high-temperature water boilers
shall receive a certificate inspection annually, which shall be an internal inspection where
construction permits; otherwise, it shall be as complete an inspection as possible. Such boilers
shall also be inspected externally on an annual frequency while under normal operating
conditions.
(1)
Alternative internal inspection requirements
(A)
The inspection frequency for fully-attended power boilers and high-temperature
boilers may be extended to 36 months if the following requirements are met and
approved by the Director:
it shall be as complete an inspection as possible. Such boilers
shall also be inspected externally on an annual frequency while under normal operating
conditions.
(1)
Alternative internal inspection requirements
(A)
The inspection frequency for fully-attended power boilers and high-temperature
boilers may be extended to 36 months if the following requirements are met and
approved by the Director:
(1)
Continuous boiler water treatment under the direct supervision of
persons trained and experienced in water treatment for the purpose of
controlling and limiting corrosion and deposits.
(2)
Record-keeping available for review, showing:
(i)
The date and time the boiler is out of service and the reason
therefore.
(ii)
Daily analysis of water samples that adequately show the
conditions of the water and elements or characteristics that are
capable of producing corrosion or other deterioration to the boiler
or its parts.
(3)
Controls, safety devices, instrumentation and other equipment necessary
for safe operation are up-to-date, in service, calibrated and meet the
requirements of an appropriate safety code for that size boiler, such as
NFPA 85, ASME CSD-1, National Board Inspection Code ANSI/NB-23 or
jurisdictional requirements and are not compromised.
(B)
Inspection intervals greater than 36 months may be granted at the discretion of
the Director.
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vice, calibrated and meet the
requirements of an appropriate safety code for that size boiler, such as
NFPA 85, ASME CSD-1, National Board Inspection Code ANSI/NB-23 or
jurisdictional requirements and are not compromised.
(B)
Inspection intervals greater than 36 months may be granted at the discretion of
the Director.
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(d)
ASME Section IV boilers covered by these rules and regulations shall receive a certificate
inspection every two years, with an internal inspection at the discretion of a State or Special
Inspector, where construction permits.
(1)
Steam or vapor boilers shall have an external inspection or an internal inspection every
two years.
(2)
Hot water heating and hot water supply boilers shall have an external inspection every
two years and, where construction permits, an internal inspection at the discretion of the
State or Special Inspector.
(3)
Water heaters, including hot water storage tanks, shall have an external inspection every
two years which shall include an inspection of the function of all controls and devices.
(4)
Indirect-fired jacketed steam kettles shall be inspected when the boiler providing steam to
the kettle is inspected, although no certificate of inspection shall be issued by the
Director.
(5)
Hot water storage tanks shall be inspected when the hot water heating boiler or hot water
supply boiler is inspected, although no separate certificate of inspection will be issued by
the Director.
(e)
Based upon documentation of such actual service conditions by the owner or user of the
operating equipment, the Director may, at his/her discretion, permit variations in the inspection
frequency requirements as provided in the Act.
inspected when the hot water heating boiler or hot water
supply boiler is inspected, although no separate certificate of inspection will be issued by
the Director.
(e)
Based upon documentation of such actual service conditions by the owner or user of the
operating equipment, the Director may, at his/her discretion, permit variations in the inspection
frequency requirements as provided in the Act.
(f)
Historical boilers, defined as steam boilers of riveted construction that are preserved, restored or
maintained for hobby or demonstration use, shall be subjected to an initial certificate inspection
followed by a certificate inspection every three years thereafter if stored inside a shelter and
annually if stored outdoors. The initial inspection shall include ultrasonic thickness testing of all
pressure boundaries provided by an authorized non-destructive examination testing entity as
defined in NBIC. All thinned areas shall be monitored and recorded on the inspection report both
to the owner and Director’s electronic copy in the comments section.
(g)
When a boiler, water heater, or direct-fired jacketed steam kettle that is required to have an
operating certificate has a noted deficiency or a requirement for repair from an inspector
authorized to inspect boilers or pressure vessels in the State of Colorado, the Inspector shall re-
inspect the pressure-retaining item within 90 days from the date the requirement or deficiency
was first noted. The Inspector may omit this re-inspection at his/her discretion.
Section 2-2
Condemning a Boiler
(a)
Conditions which a State or Special Inspector may determine to be unsafe include: bypassed
safety controls, inoperative safety valves, an excessive gas leak and any other condition that, in
the Inspector’s judgment, means the boiler should be condemned.
(b)
The owner or user must shut down the condemned boiler or pressure vessel as directed by the
Inspector. If neither the owner nor user is available, the Inspector will cause the boiler to be shut
down.
ne to be unsafe include: bypassed
safety controls, inoperative safety valves, an excessive gas leak and any other condition that, in
the Inspector’s judgment, means the boiler should be condemned.
(b)
The owner or user must shut down the condemned boiler or pressure vessel as directed by the
Inspector. If neither the owner nor user is available, the Inspector will cause the boiler to be shut
down.
(c)
The Inspector will affix to a condemned boiler or pressure vessel a notice that it has been
condemned and may not be used until satisfactory repairs are made, as determined by a re-
inspection by an authorized State or Special Inspector.
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Section 2-3
Inspections of Exempt Vessels
State or Special Inspectors may perform inspections of exempt boilers or pressure vessels, upon
receiving a written request from the boiler owner and based upon inspector availability. The inspector will
notify the boiler owner of any safety code violations. An inspection fee and a certificate fee will be
charged according to the schedule established by Article 4 of these regulations.
Section 2-4
Inspection of Insured Vessels by a State Inspector
If an insurance company has not submitted to the Director an inspection report of an insured boiler or
pressure vessel by 90 days after the expiration date of the certificate of inspection, the Director may send
a State Inspector to perform the certificate inspection. Such an inspection by a State Inspector becomes
the certificate inspection, regardless of whether the Special Inspector also performs the inspection and
will be invoiced at the State inspection rate.
Section 2-5
Submission of Inspection Reports by Special Inspectors
Special Inspectors shall file their inspection reports either by entering data into the web-based inspection
entry form approved by the Director or by electronic transfer of data between the insurance company and
the Director
ether the Special Inspector also performs the inspection and
will be invoiced at the State inspection rate.
Section 2-5
Submission of Inspection Reports by Special Inspectors
Special Inspectors shall file their inspection reports either by entering data into the web-based inspection
entry form approved by the Director or by electronic transfer of data between the insurance company and
the Director. If the electronic transfer of data option is selected, the insurance company is responsible for
all costs to develop and implement this functionality.
Section 2-6
Inspections Required before Shipment to Colorado
Before a new power boiler or a used/secondhand boiler or pressure vessel may be shipped for installation
in the Director’s jurisdiction, an inspection must be made by an Inspector authorized by the Director or by
any Inspector holding a valid National Board Commission. The purpose of this inspection is to assess the
integrity of the vessel and ensure it meets the original design specification. Prior to installation, an
application shall be filed by the owner or user of the boiler or pressure vessel with the Director for
approval.
ARTICLE 3
CERTIFICATE OF INSPECTION
Section 3-1
Requirement of Certificates
A valid certificate of inspection is required for all boilers that are included in the inspection fee schedule
established by these regulations and that are in operational or stand-by status. A certificate of inspection
is not required for a boiler that is out of service or scrapped as defined by these regulations.
Section 3-2
Grace Periods
ATE OF INSPECTION
Section 3-1
Requirement of Certificates
A valid certificate of inspection is required for all boilers that are included in the inspection fee schedule
established by these regulations and that are in operational or stand-by status. A certificate of inspection
is not required for a boiler that is out of service or scrapped as defined by these regulations.
Section 3-2
Grace Periods
(a)
A boiler may legally be operated without a current, valid certificate of inspection in the following
situations:
(1)
A new or existing boiler has received its initial inspection by a State Inspector, and:
(A)
No violations were noted or proper notice has been made that all noted violations
have been corrected.
(B)
An enforcement document has not been issued for non-payment of invoiced
inspection fees.
(2)
An existing boiler has an expired certificate because the boiler was not inspected in a
timely manner, provided the owner/owner’s representative has not hindered the
performance of that inspection.
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(b)
The Director may extend the grace period provided there is no undue risk to public safety.
(c)
No grace period applies for any boiler when the certificate of inspection has been suspended for
non-compliance with safety requirements of these regulations.
ARTICLE 4
INSPECTION AND CERTIFICATE FEES
Table 4-1: Boiler Inspection and Certificate Fees
Boiler type
Inspection type
BTU input
Inspection
Frequency
Certificate
Issued?
Inspection
Fee-
State
Inspector
Inspection
fee-
Insurance
Inspector
Certificate
Fee
All Boilers and Water Heaters
Initial internal/external inspection
Initial after
installation
Yes
$100
N/A
$25
ASME Sec I Power Boiler
Internal (water-side) inspection
≥ 5,000,000 btu/hr input
Annual
Yes
$100
$15
$25
≥ 1,000,000 but < 5,000,000 btu/hr
input
Annual
Yes
$85
$15
$25
< 1,000,000 btu/hr input
Annual
Yes
$70
$15
$25
ASME Sec I Power Boiler
External (fire-side) inspection following the internal certificate inspection
All capaci
ernal/external inspection
Initial after
installation
Yes
$100
N/A
$25
ASME Sec I Power Boiler
Internal (water-side) inspection
≥ 5,000,000 btu/hr input
Annual
Yes
$100
$15
$25
≥ 1,000,000 but < 5,000,000 btu/hr
input
Annual
Yes
$85
$15
$25
< 1,000,000 btu/hr input
Annual
Yes
$70
$15
$25
ASME Sec I Power Boiler
External (fire-side) inspection following the internal certificate inspection
All capacities
Annual
No
$50
$15
N/A
ASME Sec I Power Boiler
External (fire-side) inspection where construction does not permit internal inspection
≥ 5,000,000 btu/hr input
Annual
Yes
$85
$15
$25
≥ 1,000,000 but < 5,000,000 btu/hr
input
Annual
Yes
$75
$15
$25
< 1,000,000 btu/hr input
Annual
Yes
$65
$15
$25
ASME Sec IV Boiler or Non-Atmospheric Water Heater
External (fire-side) inspection
≥ 5,000,000 btu/hr input
Every 2
years
Yes
$85
$15
$25
≥ 1,000,000 but < 5,000,000 btu/hr
input
Every 2
years
Yes
$75
$15
$25
< 1,000,000 btu/hr input
Every 2
years
Yes
$65
$15
$25
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Table 4-1: Boiler Inspection and Certificate Fees
Boiler type
Inspection type
BTU input
Inspection
Frequency
Certificate
Issued?
Inspection
Fee-
State
Inspector
Inspection
fee-
Insurance
Inspector
Certificate
Fee
Storage Tank Water Heaters with Atmospheric Burners
All capacities
Every 2
years
Yes
$35
$15
$25
Direct-fired Jacketed Steam Kettles
External inspection
All capacities
Every 2
years
Yes
$35
$15
$25
Exempt boilers and pressure vessels
External inspection
All capacities
Upon
request
No
$85
$0
$0
Historical boiler
External inspection
All capacities
Every 3
years
Yes
$85
$15
$25
Historical boiler
Internal inspection
All capacities
Every 3
years
Yes
$85
$15
$25
ARTICLE 5
OWNER-USER INSPECTION ORGANIZATIONS
Section 5-1
Requirement
(a)
Any person, firm, partnership, or corporation operating boilers or pressure vessels in Colorado
may seek approval and registration as an owner-user inspection organization by filing an
application with the Director on the prescribed forms.
$25
Historical boiler
Internal inspection
All capacities
Every 3
years
Yes
$85
$15
$25
ARTICLE 5
OWNER-USER INSPECTION ORGANIZATIONS
Section 5-1
Requirement
(a)
Any person, firm, partnership, or corporation operating boilers or pressure vessels in Colorado
may seek approval and registration as an owner-user inspection organization by filing an
application with the Director on the prescribed forms.
(b)
The applicant shall show the name of the organization, its principal address in the jurisdiction and
the name and address of the person or persons having supervision over inspections made by
said organization on the application and registration. The applicant shall report changes in
supervisory personnel to the director within 30 days after any such change.
(c)
Each owner-user inspection organization shall:
(1)
Conduct inspections of its non-exempt boilers, utilizing only qualified owner-user
inspectors.
(2)
Retain on file at the location where equipment is inspected a true record or copy of the
report of each inspection signed by the owner-user inspector who performed the
inspection.
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(3)
Promptly notify the Director of any boiler or pressure vessel that does not meet the
requirements for safe operation.
(4)
Maintain inspection records that include a list of non-exempt boilers, showing the serial
number and such abbreviated description as may be necessary for identification, the date
of the last inspection of each unit, the approximate date of the next inspection and
documentation of all repairs. Such inspection records shall be readily available for
examination by the Director during business hours.
Maintain inspection records that include a list of non-exempt boilers, showing the serial
number and such abbreviated description as may be necessary for identification, the date
of the last inspection of each unit, the approximate date of the next inspection and
documentation of all repairs. Such inspection records shall be readily available for
examination by the Director during business hours.
(5)
Transmit a statement annually to the Director, on a date mutually agreed upon. Such
statement shall be signed by the individual having supervision over the inspections made
during the period covered. The statement shall include the number of boilers inspected
during the year and shall certify that each inspection was conducted in accordance with
the inspection requirements provided by these regulations.
(d)
A state-issued certificate of inspection is required for boilers inspected by an owner-user
inspection organization when all of the requirements in this Section are met.
(e)
An individual or organization performing an inspection pursuant to this Section shall have liability
insurance appropriate for the size and scope of the relevant inspection.
ARTICLE 6
ACCIDENT REPORTS AND INVESTIGATIONS
Section 6-1
Reporting Accidents
(a)
The owner or user shall notify the Director within 24 hours of the explosion of any boiler or
pressure vessel, or of any accident involving a boiler, pressure vessel or boiler external piping
that involves bodily injury or death to any person. The initial accident report may be by telephone
(303-514-2140 ) or email (cdle_boiler@state.co.us).
AND INVESTIGATIONS
Section 6-1
Reporting Accidents
(a)
The owner or user shall notify the Director within 24 hours of the explosion of any boiler or
pressure vessel, or of any accident involving a boiler, pressure vessel or boiler external piping
that involves bodily injury or death to any person. The initial accident report may be by telephone
(303-514-2140 ) or email (cdle_boiler@state.co.us).
(b)
If the initial report is not on the form required by the State Boiler Section, that form must be
completed and submitted within seven days of the explosion.
Section 6-2
Prohibition against Removal of Boiler or Pressure Vessel
In the event of an explosion, personal injury or death, the boiler, pressure vessel, power piping and any
associated parts shall not be removed or disturbed before permission has been given by the Director,
except for the purpose of saving human life or limiting consequential damage.
Section 6-3
Investigation of Accidents
The Director shall investigate any reported accident or explosion to determine the cause, if possible, and
shall maintain a record of all such reports and investigations.
ARTICLE 7
ENFORCEMENT
Section 7-1
Enforcement Program
The Director provides these regulations to assist the regulated community with maintaining safe and
proper operation of regulated boilers and pressure vessels. When a regulated boiler or pressure vessel is
found to be out of compliance with these regulations, the Director will pursue enforcement actions. The
enforcement process will include requiring the boiler owner to make repairs and other actions to bring the
boiler or pressure vessel back into compliance. During and following the enforcement process, the
Director will continue to assist the boiler owner to remain in compliance. The enforcement process may
CODE OF COLORADO REGULATIONS
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nt actions. The
enforcement process will include requiring the boiler owner to make repairs and other actions to bring the
boiler or pressure vessel back into compliance. During and following the enforcement process, the
Director will continue to assist the boiler owner to remain in compliance. The enforcement process may
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include monetary penalties up to $1,000 per boiler or pressure vessel per day of violation according to §8-
20-104 CRS if the enforcement obligations are not implemented according to the required schedule.
Section 7-1-1 Notice of Violation
(a)
A Notice of Violation (NOV) may be issued when a boiler or pressure vessel is found to be out of
compliance with these regulations or §8-20 and 9-4 CRS.
(b)
Pursuant to §9-4-105(3) CRS, the NOV may include condemnation of a boiler or pressure vessel
that has been determined to be unsafe, and the NOV shall constitute sufficient notice to cease
and desist operation of the boiler or pressure vessel such that no further notice by the Director is
required. In the case of a condemned boiler or pressure vessel, a re-inspection by a State or
Special Inspector must be performed to document that satisfactory repairs were completed before
the boiler or pressure vessel may be operated.
(c)
Within 10 working days after an NOV has been issued, the person issued the NOV may file a
written request with the Director for an informal conference regarding the NOV. If the person
issued the NOV does not request an informal conference within this time frame, all provisions of
the NOV shall become final and not subject to further discussion. If the NOV is not resolved within
the prescribed time frame, the Director may then seek judicial enforcement of the NOV, or an
Enforcement Order may be issued.
Section 7-1-2 Enforcement Order
l conference regarding the NOV. If the person
issued the NOV does not request an informal conference within this time frame, all provisions of
the NOV shall become final and not subject to further discussion. If the NOV is not resolved within
the prescribed time frame, the Director may then seek judicial enforcement of the NOV, or an
Enforcement Order may be issued.
Section 7-1-2 Enforcement Order
(a)
An Enforcement Order may be issued when the violations included within an NOV are not
resolved within the prescribed time frame. The Enforcement Order may include increased fines
up to $1,000 per boiler or pressure vessel for each day of violation pursuant to §8-20-104(4)(a)
CRS. In addition, the Enforcement Order may include a cease and desist order per §9-4-108
CRS to discontinue use of the boiler or pressure vessel. The Director shall not issue a cease and
desist order for a boiler operated without a valid certificate of inspection if the sole reason for
failure to have the certificate of inspection is that the boiler was not inspected in a timely manner.
(b)
Within 10 working days after an Enforcement Order has been issued, the boiler owner may file a
written request with the Executive Director for an informal conference regarding the Enforcement
Order. If the boiler owner does not request an informal conference within this time frame, all
provisions of the Enforcement Order shall become final and not subject to further discussion. If
the Enforcement Order is not resolved within the prescribed time frame, the Director may seek
judicial enforcement of the Enforcement Order.
Section 7-1-3 Informal Conference
(a)
Upon receipt of the request, the Director shall provide the boiler owner with notice of the date,
time and place of the informal conference. The Director shall preside at the informal conference,
during which the boiler owner and Division personnel may present information and arguments
regarding the allegations and requirements of the NOV or the Enforcement Order.
ion 7-1-3 Informal Conference
(a)
Upon receipt of the request, the Director shall provide the boiler owner with notice of the date,
time and place of the informal conference. The Director shall preside at the informal conference,
during which the boiler owner and Division personnel may present information and arguments
regarding the allegations and requirements of the NOV or the Enforcement Order.
(b)
Within 20 days after the informal conference, the Director shall issue a Settlement Agreement in
which the violations from the NOV or Enforcement Order will be upheld, modified or stricken. The
Settlement Agreement will include a schedule of required activity for resolution of the violations. If
the terms or schedule in the Settlement Agreement are not satisfied, either an Enforcement Order
will be issued or the Director may seek judicial enforcement of the previously-issued Enforcement
Order.
_________________________________________________________________________
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Editor’s Notes
History
Sections 1-4, 1-5-1, 2-1(c), 3-4 (d) and (e) eff. 12/01/2008.
Section 3-4 (d) and (e) emer. rule eff. 07/05/2010; expired 11/02/2010.
Sections 1-4, 1-5-1(a), 1-5-1(b)(1), 1-5-1(c), 1-5-2, 2-1(a), 2-1(c), 2-1(f), 3-3(b), 3-4(b), 3-4(d), 3-4(e), 3-5,
6-1(a) emer. rule eff. 12/13/2010.
Sections 1-4, 1-5-1(a), 1-5-1(b)(1), 1-5-1(c), 1-5-2, 2-1(a), 2-1(c), 2-1(f), 3-3(b), 3-4(b), 3-4(d), 3-4(e), 3-5,
6-1(a) emer. rule eff. 03/11/2011.
Sections 1-4, 1-5-1(a), 1-5-1(b)(1), 1-5-1(c), 1-5-2, 2-1(a), 2-1(c), 2-1(f), 3-3(b), 3-4(b), 3-4(d), 3-4(e), 3-5,
6-1(a) eff. 04/14/2011.
Section 3-4 emer. rule eff. 11/30/2011.
Section 3-4 emer. rule eff.11/30/2011; expired 03/29/2012.
Sections 1-4, 1-5-1(a), 1-5-1(b)(1), 3-4(d) eff. 03/30/2012.
Sections 1-4, 1-5-1(c)-(e), 1-7-1(b), 1-9, 3-4(d), 5-1, 6-1(a) eff. 06/15/2013.
Entire rule eff. 07/01/2017.
Article 1, Sections 2-1(d)(5), 2-4, 2-6, Article 4, Sections 6-1, 6-3 eff. 01/01/2026.
3-4(d), 3-4(e), 3-5,
6-1(a) eff. 04/14/2011.
Section 3-4 emer. rule eff. 11/30/2011.
Section 3-4 emer. rule eff.11/30/2011; expired 03/29/2012.
Sections 1-4, 1-5-1(a), 1-5-1(b)(1), 3-4(d) eff. 03/30/2012.
Sections 1-4, 1-5-1(c)-(e), 1-7-1(b), 1-9, 3-4(d), 5-1, 6-1(a) eff. 06/15/2013.
Entire rule eff. 07/01/2017.
Article 1, Sections 2-1(d)(5), 2-4, 2-6, Article 4, Sections 6-1, 6-3 eff. 01/01/2026.
Annotations
Rules 1-7-1(b), 1-9, and 5-1 (adopted 06/01/2006) were not extended by House Bill 07-1167 and
therefore expired 05/15/2007.
This is a copy of a public record, reproduced as it was published. It is not legal advice, and it may not be the version a court would rely on. Check the official source before you cite it.