reglab/statecodes huggingface dataset:
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-60 - Fusible plugs

Current through July 10, 2024
Fire-actuated fusible plugs, if used, shall conform to the
				  requirements of the A.S.M.E. Boiler Construction Code for Power Boilers
				  prescribed in section
				  29-232-50.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-61 - Water columns, gage glasses and gage cocks

Current through July 10, 2024
No outlet connections, except for damper regulator, feedwater
				  regulator, low water fuel cut-out, drains, steam gages, or such apparatus that
				  does not permit the escape of an appreciable amount of steam or water
				  therefrom, shall be placed on the piping that connects the water column to the
				  boiler. The water column shall be provided with a valved drain of at least
				  three-fourths of an inch pipe size, the drain to be piped to a safe location.
				  Each boiler shall have three or more gage cocks, located within the range of
				  the visible length of the water glass, except when such boiler has two water
				  glasses with independent connections to the boiler, located on the same
				  horizontal line. Boilers not over thirty-six inches in diameter in which the
				  heating surface does not exceed 100 sq. ft. need have but two gage cocks.
				  Electric boilers need not be fitted with gage cocks. The gage cock connections
				  shall be not less than one-half inch pipe size. When the direct reading of gage
				  glass water level is not readily visible to the operator in his working area,
				  two dependable, indirect indications shall be provided, either by transmission
				  of the gage glass image or by remote level indications.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-62 - Steam gages

Current through July 10, 2024
Each steam boiler shall have a steam gage with the dial
				  graduated to approximately double the pressure at which the safety valve is set
				  but in no case to not less than one and one-half times this pressure, connected
				  to the steam space or to the steam connection to the water column. The steam
				  gage shall be connected to a siphon or equivalent device of sufficient capacity
				  to keep the gage tube filled with water and so arranged that the gage cannot be
				  shut off from the boiler except by a cock placed near the gage and provided
				  with a tee or lever handle arranged to be parallel to the pipe in which it is
				  located when the cock is open. An additional shut off valve or cock may be used
				  near the boiler, provided the valve is locked open. The line shall be ample
				  size with provision for free blowing. The connection to the boiler, except the
				  siphon, shall not be less than one-quarter inch standard pipe size but where
				  steel or wrought iron pipe or tubing is used, they shall not be less than
				  one-half inch inside diameter. Each boiler shall be provided with a one-fourth
				  of an inch nipple and globe valve connected to the steam space for the
				  exclusive purpose of attaching a test gage when the boiler is in service so
				  that the accuracy of the boiler steam gage may be
				  ascertained.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-63 - Stop valves

Current through July 10, 2024
Each steam outlet from a boiler, except safety valve
				  connections, shall be fitted with a stop valve located as close as practicable
				  to the boiler. When such outlets are over two inch pipe size, the valve or
				  valves used on the connections shall be of the outside-screw-and-yoke
				  rising-spindle type so as to indicate from a distance by the position of its
				  spindle whether it is closed or open, and the wheel may be carried either on
				  the yoke or attached to the spindle. In the case of a single boiler and prime
				  mover installation, the stop valve required herein may be omitted provided the
				  prime mover throttle valve is equipped with an indicator to show whether the
				  valve is open or closed and is designed to withstand the required hydrostatic
				  pressure test of the boiler. When a stop valve is so located that water can
				  accumulate, ample drains shall be provided.
The drainage shall be piped to a safe location and shall not
				  be discharged on the top of the boiler or its setting. When boilers provided
				  with manholes are connected to a common steam main, the steam connection from
				  each boiler having a manhole opening shall be fitted with two stop valves
				  having an ample free blow drain between them. The discharge of this drain shall
				  be visible to the operator while manipulating the valves and shall be piped
				  clear of the boiler setting. The stop valves shall consist preferably of one
				  automatic non-return valve set next to the boiler and a second valve of the
				  outside screw-and-yoke-type.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-64 - Blow-off piping

Current through July 10, 2024
(a) The
				construction of the setting around each blow-off pipe shall permit
				free-expansion and contraction. Careful attention shall be given to the problem
				of sealing these setting openings without restricting the movement of the
				blow-off piping. All blow-off piping, when exposed to furnace heat, shall be
				protected by fire brick or other heat resisting material, so constructed that
				the piping may be readily inspected. Each boiler shall have a blow-off pipe,
				fitted with a manually operated valve or cock, in direct connection with the
				lowest water space. Cocks shall be of the gland or guard type and suitable for
				the pressure allowed. The use of globe valves or automatically controlled
				electric blow-off valves shall not be permitted. When the maximum allowable
				working pressure exceeds one hundred psig, each blow-off pipe shall be provided
				with two valves or a valve and cock, such valves and cocks to be of the extra
				heavy type, one of which shall be of the slow-opening type.
(b) On a boiler having multiple blow-off
				pipes, a single master valve may be placed on the common blow-off pipe from the
				boiler in which case only one valve on each individual blow-off is required. In
				this case either the master valve or the individual valves or cocks shall be of
				the slow-opening type. When the maximum allowable working pressure exceeds one
				hundred psig, blow-off piping shall be extra heavy from the boiler to the valve
				or valves, and shall be run full size without use of reducers or bushings. The
				piping shall be extra heavy wrought iron or steel and shall not be galvanized.
				All fittings between the boiler and blow-off valve shall be steel or extra
				heavy fittings or malleable iron. In case of renewal of blow-off pipe or
				fittings, they shall be installed in accordance with the regulations for new
				installations.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-65 - Repairs and renewals of boiler fittings and appliances

Current through July 10, 2024
Whenever repairs are made to fittings or appliances or it
				  becomes necessary to replace them, the work shall comply with the requirements
				  for new installations.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-66 - Ladders and runways

Current through July 10, 2024
Where necessary for safety, there shall be a steel runway or
				  platform of standard construction installed across the tops of adjacent boilers
				  or at some other convenient level for the purpose of affording safe access. The
				  inspector shall notify the commissioner as to which owners or users shall
				  provide for these requirements and the commissioner shall give written notice
				  to the owner or user that the installation be made. The owner or user shall be
				  allowed one year from the date of the commissioner's notification in which to
				  complete the work. All runways shall have at least two means of exit, each to
				  be remotely located from the other.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-67 - Exits from boiler rooms

Current through July 10, 2024
To lessen the hazard of being trapped within the boiler room,
				  ash pit aisles or other locations, there shall be at least two means of exit.
				  Each elevation shall be provided with at least two means of egress, each to be
				  remotely located from the other. All authorized inspectors shall notify the
				  commissioner as to which owners or users shall provide for these requirements.
				  The commissioner shall give written notice to the owner or user that the
				  necessary work must be completed within six months from the date of
				  notification.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Power Boilers › Section 29-232-68 - Conditions not covered by regulations

Current through July 10, 2024
All cases not specifically covered by these regulations shall
				  be treated as new installations or may be referred to the commissioner for
				  instructions concerning the requirements.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › New Boiler Installations - Miniature Boilers › Section 29-232-69 - Requirements

Current through July 10, 2024
(a) No miniature boiler, except reinstalled
				boilers and those exempted by statute shall be installed in this state after
				January 1, 1954 unless it has been designed, constructed, inspected and stamped
				in conformity with the provisions of section I, part PMB of the latest edition
				of the American Society of Mechanical Engineers Boiler and Pressure Vessel
				Code, entitled "Power Boilers" and with addenda or amendments thereto, approved
				by the society and adopted by the commissioner as safe requirements for the
				construction, installation and inspection of boilers in the interest of public
				safety, as such rules, addenda or amendments thereto shall appear on file with
				the secretary of state.
(b)
				Miniature boilers reinstalled after October 26, 1959 shall, if constructed
				after that date, conform to all of the requirements of subsection (a) above.
				Miniature boilers reinstalled after October 26, 1959, if constructed prior to
				that date, shall be installed in conformity with the provisions dealing with
				safety valves, water and steam gages, and fittings and appliances, which are
				part of the Power Boilers, part PMB referred to in subsection (a)
				above.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › New Boiler Installations - Miniature Boilers › Section 29-232-70 - Inspections

Current through July 10, 2024
Each boiler subject to the provisions of section
				  29-232-69
				  shall, upon completion of the installation, be inspected by a duly authorized
				  inspector before operation. At the time of this inspection, each boiler shall
				  be stamped with a serial number of the state of Connecticut preceded by the
				  letters CONN, said letters and figures to be not less than five-sixteenths of
				  an inch in height. The stamping shall not be concealed by lagging or paint and
				  shall be exposed at all times.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-71 - General rules

Current through July 10, 2024
Regulations adopted for power boilers as prescribed in
				  sections
				  29-232-54
				  and
				  29-232-55,
				  applying to strength of materials and calculations to determine maximum
				  allowable working pressure, shall be used for miniature boilers unless a
				  special rule is stated herein.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-72 - Construction

Current through July 10, 2024
The construction of miniature boilers including factor of
				  safety, except where otherwise specified, shall conform to that required for
				  power boilers as prescribed in section
				  29-232-50.
Correct Typo in Section Number. Was 19-428-72. (October 14,
					 2014)
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-73 - Safety valve

Current through July 10, 2024
(a) Each miniature
				boiler shall be equipped with a sealed, spring-loaded, pop type safety valve
				not less than one-half inch pipe size, connected directly to the boiler. The
				safety valve shall be plainly marked by the manufacturer showing name or
				identifying trade-mark, nominal diameter and pressure at which it is set to
				release.
(b) The safety valve
				relieving capacity of each boiler shall be such that it will discharge all the
				steam that can be generated by the boiler without allowing the pressure to rise
				more than six percent above the maximum allowable working pressure. In those
				cases where the boiler is supplied with feed water directly from a pressure
				main or system without the use of a mechanical feeding device, the safety valve
				shall be set to release at a pressure not in excess of ninety-four percent of
				the lowest pressure obtained in the supply main or system feeding the boiler.
				Return traps shall not be considered mechanical feeding devices.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-74 - Gage glass and water level indicator

Current through July 10, 2024
Each miniature boiler shall be equipped with a water gage
				  glass for determination of water level. The lowest permissible water level
				  shall be at a point one-third of the height of the shell, except where the
				  boiler is equipped with an internal furnace, in which case it shall not be less
				  than one-third of the tube length above the top of the furnace. For small
				  boilers where there is insufficient space for the usual type of gage glass,
				  water level indicators of the glass bull's eye type may be
				  used.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-75 - Feeding and feedwater piping

Current through July 10, 2024
Every miniature boiler shall be provided with at least one
				  feed pump or other mechanical feeding device except where the following
				  conditions exist:
(1) Where the boiler
				is connected to a water main or system having sufficient pressure to feed the
				boiler at any time while under pressure;
(2) Where the boiler is operated without
				extraction of steam (closed system) in which case the boiler is filled, when
				cold, through the connection or opening provided in accordance with the
				following rule:
Each miniature boiler shall be fitted with a feedwater
				  connection which shall not be less than one-half inch pipe size for iron or
				  steel pipe and one quarter inch for brass or copper pipe. The feed piping shall
				  be provided with a check valve near the boiler and a valve or cock between the
				  check valve and the boiler. Feed water may be introduced through the blow-off
				  connection if desired. Feed water shall not be introduced through the water
				  column or gage glass connections while the boiler is under
				  pressure.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-76 - Blow-off piping

Current through July 10, 2024
Each miniature boiler shall be provided with a blow-off
				  connection, not less than one-half inch iron pipe size, directly connected with
				  the lowest water space. Blow-off piping shall not be galvanized and shall be
				  provided with a valve or cock.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-77 - Steam gages

Current through July 10, 2024
Each miniature boiler shall be equipped with a steam gage
				  having a dial range not less than one and one-half times the maximum allowable
				  working pressure. The gage shall be connected to the steam space or to the
				  steam connection to the gage glass by a brass or bronze composition siphon
				  tube, or equivalent device that will keep the gage tube filled with
				  water.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-78 - Stop valves

Current through July 10, 2024
The steam piping from a miniature boiler shall be provided
				  with a stop valve located as close to the boiler shell or drum as is
				  practicable, except in those cases where the boiler and steam receiver are
				  operated as a closed system.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-79 - Flue connection

Current through July 10, 2024
Each gas fired boiler shall be equipped with a four-inch vent
				  pipe or flue extended to an approved location outside the building or connected
				  to a chimney flue. Where the horizontal run is more than ten feet, the vent
				  shall be increased to six inches. A draft hood of approved design shall be
				  provided on each boiler.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Miniature Boilers › Section 29-232-80 - Stamping of existing boilers

Current through July 10, 2024
Each existing boiler shall be stamped with a serial number of
				  the state of Connecticut (preceded by the letters CONN, said letters and
				  figures to be not less than five-sixteenths of an inch in height). The stamping
				  shall not be concealed by lagging or paint and shall be exposed at all
				  times.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › New Installation - Low Pressure Heating Boilers › Section 29-232-81 - Requirements

Current through July 10, 2024
(a) No low pressure heating boiler, except
				reinstalled boilers and those exempted by statute, shall be installed in this
				state after October 26, 1959, unless it has been designed, constructed,
				inspected and stamped in conformity with the provisions of the latest edition
				of section IV of the American Society of Mechanical Engineers Boiler and
				Pressure Vessel Code, entitled "Heating Boilers" and with addenda or amendments
				thereto, approved by the society and adopted and recommended by the
				commissioner as safe requirements for the construction, installation and
				inspection of boilers in the interest of public safety, as such rules, addenda
				or amendments thereto shall appear on file with the secretary of
				state.
(b) When a low pressure
				heating boiler is moved and reinstalled, the attached fittings and appliances
				shall comply with these rules and regulations for new installations.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › New Installation - Low Pressure Heating Boilers › Section 29-232-82 - Inspections

Current through July 10, 2024
Each boiler subject to the provisions of section
				  29-232-81
				  shall upon completion of the installation be inspected by a duly authorized
				  inspector before operation. At the time of this inspection, all steel heating
				  boilers shall be stamped with the serial number of the state of Connecticut,
				  preceded by the letters CONN, said letters and figures to be not less than
				  five-sixteenths of an inch in height. All cast iron heating boilers shall have
				  securely attached to the front of the boiler a metal tag not less than one inch
				  in height which shall have the serial number of the state of Connecticut
				  stamped thereon, preceded by the letters CONN.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › New Installation - Low Pressure Heating Boilers › Section 29-232-83 - Return water connections

Current through July 10, 2024
The return water connections to all low pressure steam
				  heating boilers supplying a gravity return heating system shall be so arranged
				  as to form what is known as the "water line return" so that the water cannot be
				  forced out of the boiler below the safety water level. A recommended connection
				  is shown in figure HG 703.1, section IV, American Society of Mechanical
				  Engineers Code.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-84 - Standard boilers

Current through July 10, 2024
The maximum allowable working pressure of a standard boiler
				  shall in no case exceed the pressure indicated by the manufacturer's
				  identification stamped or cast upon the boiler or upon a plate secured to
				  it.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-85 - Nonstandard riveted boilers

Current through July 10, 2024
The maximum allowable working pressure on the shell of a
				  nonstandard riveted heating boiler shall be determined in accordance with
				  requirements of section
				  29-232-55,
				  except that in no case shall the maximum allowable working pressure of a steam
				  heating boiler exceed fifteen, or a hot water boiler exceed one hundred sixty,
				  psig at a temperature not exceeding 250°F.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-86 - Nonstandard welded boilers

Current through July 10, 2024
The maximum allowable working pressure of a nonstandard steel
				  or wrought iron heating boiler of welded construction shall not exceed fifteen
				  psig for steam service or thirty psig for hot water heating service. For hot
				  water supply service the maximum allowable working pressure shall be calculated
				  in accordance with the requirements of section
				  29-232-81.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-87 - Nonstandard cast iron boilers

Current through July 10, 2024
The maximum allowable working pressure of a nonstandard
				  boiler composed principally of cast iron shall not exceed fifteen psig for
				  steam service or thirty psig for hot water service. The maximum allowable
				  working pressure of a nonstandard boiler having cast iron shell or heads and
				  steel or wrought iron tubes shall not exceed fifteen psig for steam service or
				  thirty psig for water service.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-88 - Fired radiators

Current through July 10, 2024
A radiator in which steam pressure is generated at a pressure
				  of fifteen psig or less is a low pressure boiler.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-89 - Unsafe boilers

Current through July 10, 2024
If, in the judgment of the inspector, a low pressure heating
				  boiler is unsafe for operation at the pressure previously approved, the
				  pressure shall be reduced, proper repair made or the boiler retired from
				  service.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-90 - Safety valves

Current through July 10, 2024
(a) Each steam
				boiler shall have one or more ASME/National Board certified safety valves of
				the spring poptype adjusted and sealed to discharge at a pressure not to exceed
				15 psi. Seals shall be attached in a manner to prevent the valve from being
				taken apart without breaking the seal. The safety valves shall be arranged so
				that they cannot be reset to relieve at a higher pressure than the maximum
				allowable working pressure of the boiler. A body drain connection below seat
				level shall be provided by the manufacturer and this drain shall not be plugged
				during or after field installation. For valves exceeding 2 in. pipe size, the
				drain hole or holes shall be tapped not less than 3/8 in. pipe size. For valves
				less than 2 in., the drain hole shall not be less than 1/4 in. in
				diameter.
(b) No safety valve for a
				steam boiler shall be smaller than 3/4 in. unless the boiler and radiating
				surfaces consist of a self-contained unit. No safety valve shall be larger than
				4 1/2 in. The inlet opening shall have an inside diameter equal to, or greater
				than, the seat diameter.
(c) The
				minimum relieving capacity of the valve or valves shall be governed by the
				capacity marking on the boiler.
(d)
				The minimum valve capacity in pounds per hour shall be the greater of that
				determined by dividing the maximum BTU output at the boiler nozzle obtained by
				the firing of any fuel for which the unit is installed by 1000, or shall be
				determined on the basis of the pounds of steam generated per hour per square
				foot of boiler heating surface as given in Table 2. In many cases a greater
				relieving capacity of valves than the minimum specified by these rules will
				have to be provided. In every case, the requirements of (e) shall be met.
Table 2
Minimum pound of steam per hour per square foot of
							 heating surface.
Firetube Boilers
Watertube Boilers
Boiler heating
							 surface:
Hand fired
5
6
Stoker fired
7
8
Oil, gas or pulverized fuel fired
8
10
Waterwall heating
							 surface:
Hand fired
8
8
Stoker Fired
10
12
Oil, Gas or pulverized fuel fired
14
16
NOTES:
(1) When a
				boiler is fired only by a gas having a heat value not in excess of 200 BTU per
				cubic foot, the maximum safety valve or relief valve relieving capacity may be
				based on the values given for hand fired boilers above.
(2) The minimum safety valve or relief valve
				relieving capacity for electric boilers shall be three and one-half lbs. per
				hour per kilowatt input.
(3) For
				heating surface determination see A.S.M.E. Code, section IV, para.
				HG-403.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-92 - Installation of safety and relief valves

Current through July 10, 2024
(a) Safety
				valves shall be located in the top or side of boilers, with the spindle
				vertical, but in no case shall the valves be located below the lowest
				permissible water level. They shall be connected directly to a tapped or
				flanged opening in the boiler, to a fitting connected to the boiler by a close
				nipple, to a Y base, or to a valveless header connecting steam outlets on the
				same boiler.
(b) Relief valves
				shall be located in the top or side of boilers, with the spindle vertical, but
				in no case shall the valves be located below the lowest permissible water
				level. They shall be connected directly to a tapped or flanged opening in the
				boiler, to a fitting connected to the boiler by a close nipple, to a Y base, or
				to a valveless header connecting water outlets on the same boiler.
(c) When a Y base is used, the inlet area
				shall be not less than the combined outlet areas. When the size of the boiler
				requires a safety valve or relief valve larger than four and one-half inches in
				diameter, two or more valves having the required combined capacity shall be
				used. When two or more valves are used on a boiler, they may be single,
				directly attached, or mounted on a Y base.
(d) No shut-off of any description shall be
				placed between the safety or relief valve and the boiler, nor on discharge
				pipes between such valves and the atmosphere. Safety and relief valves shall
				not be connected to an internal piping in the boiler.
(e) When a discharge pipe is used, its area
				shall be not less than the area of the valve or aggregate area based on the
				nominal diameters of the valves with which it connects, and the discharge pipe
				shall be fitted with an open drain to prevent water from lodging in the upper
				part of the valve or in the pipe. When an elbow is placed on a safety or relief
				valve discharge pipe, it shall be located close to the valve outlet. If the
				discharge is piped outside, a tee shall be installed in the discharge line
				inside the building with at least a ten inch long nipple turned up so as to
				relieve the drain line pressure in case of outside stoppage. The pipe shall be
				supported so that no undue stress is placed on the valve body. The discharge
				from safety or relief valves shall be so arranged that there will be no danger
				of scalding attendants.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-93 - Pressure gages

Current through July 10, 2024
(a) Each steam
				boiler shall have a steam pressure gage connected to the steam space of the
				boiler itself or to its water column or on steam pipe near the boiler. The
				graduations of the steam gage shall not be less than thirty PSI nor more than
				sixty PSI.
(b) Each hot water
				boiler shall have a pressure or altitude gage connected to it or to its flow
				connection in such a manner that it cannot be shut off from the boiler except
				by a cock with tee or level handle placed on the pipe near the gage. The handle
				of the cock shall be parallel to the pipe in which it is located when the cock
				is open. The scale on the dial of the pressure or altitude gage shall be
				graduated to not less than one and one-half nor more than three times the
				pressure at which the safety relief valve is set. Piping or tubing for pressure
				or altitude gage connections shall be of nonferrous metal when smaller than one
				inch pipe size.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-94 - Water column

Current through July 10, 2024
The minimum size of ferrous or nonferrous pipes connecting a
				  water column to a steam boiler shall be one inch. No outlet connections, except
				  for damper regulator, feedwater regulator, steam gages, or apparatus which does
				  not permit the escape of any steam or water except for manually operated
				  blowdowns, shall be attached to a water column or the piping connecting a water
				  column to a boiler. If the water column, gage glass, low-water fuel cutoff, or
				  other water level control device is connected to the boiler by pipe and
				  fitting, no shut off valves of any type shall be placed in such pipe, and a
				  cross or equivalent fitting to which a drain valve and piping may be attached
				  shall be placed in the water piping connection at every right angle turn to
				  facilitate cleaning.
The water column drain pipe and valve shall be not less than
				  3/4 in. pipe size.
The steam connections to the water column of a horizontal
				  firetube wrought iron boiler shall be taken from the top of the shell or the
				  upper part of the head, and the water connection shall be taken from a point
				  not above the center line of the shell. For a cast iron boiler, the steam
				  connection to the water column shall be taken from the top of an end section or
				  the top of the steam header, and the water connection shall be made on an end
				  section not less than 6 in. below the bottom connection to the water gage
				  glass.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-95 - Pressure control

Current through July 10, 2024
Each automatically fired steam boiler shall be protected from
				  overpressure by two pressure-operated controls.
Each individual automatically fired steam boiler shall have a
				  safety limit control that will cut off the fuel supply to prevent steam
				  pressure from exceeding the 15 psi maximum allowable working pressure of the
				  boiler. Each control shall be constructed to prevent a pressure setting above
				  15 psi.
Shutoff valves of any type shall not be placed in the steam
				  pressure connection between the boiler and the controls described above. These
				  controls shall be protected with a syphon or equivalent means of maintaining a
				  water seal that will prevent steam from entering the control. The connections
				  to the boiler shall not be less than 1/4 in. standard pipe size, but where
				  steel or wrought iron pipe or tubing is used, they shall not be less than 1/2
				  in. standard pipe size. The minimum size of a syphon shall be 1/4 in. standard
				  pipe size or 3/8 in. O.D. nonferrous tubing.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-96 - Automatic low-water fuel cutoff and/or water feeding device

Current through July 10, 2024
Each automatically fired steam or vapor-system boiler shall
				  have an automatic low-water fuel cutoff so located as to automatically cut off
				  the fuel supply when the surface of the water falls to the lowest visible part
				  of the water gage glass. If a water feeding device is installed, it shall be so
				  constructed that the water inlet cannot feed water into the boiler through the
				  float chamber and so located as to supply requisite feedwater.
Such a fuel cutoff of water feeding device may be attached
				  directly to a boiler. A fuel cutoff of water feeding device may also be
				  installed in the tapped openings available for attaching a water glass direct
				  to a boiler, provided the connections are made to the boiler with nonferrous
				  tees or Y's not less than 1/2 in. pipe size between the boiler and the water
				  glass so that the water glass is attached directly and as close as possible to
				  the boiler; the run of the tee or Y shall take the water glass fittings, and
				  the side outlet or branch of the tee or Y shall take the fuel cutoff or water
				  feeding device. The ends of all nipples shall be reamed to full-size
				  diameter.
Fuel cutoffs and water feeding devices embodying a separate
				  chamber shall have a vertical drain pipe and a blowoff valve not less than 3/4
				  in. pipe size, located at the lowest point in the water equalizing pipe
				  connections so that the chamber and the equalizing pipe can be flushed and the
				  device tested.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-97 - Hot water boilers pressure or altitude gages

Current through July 10, 2024
Each hot water boiler shall have a pressure or altitude gage
				  connected to it or to its flow connection in such a manner that it cannot be
				  shut off from the boiler except by a cock with tee or lever handle, placed on
				  the pipe near the gage. The handle of the cock shall be parallel to the pipe in
				  which it is located when the cock is open.
The scale on the dial of the pressure or altitude gage shall
				  be graduated approximately to not less than 1-1/2 nor more than three times the
				  pressure at which the safety relief valve is set.
Piping or tubing for pressure- or altitude-gage connections
				  shall be of nonferrous metal when smaller than 1 in. pipe
				  size.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-98 - Thermometers

Current through July 10, 2024
Each hot water boiler shall have a thermometer so located and
				  connected that it shall be easily readable when observing the water pressure of
				  altitude. The thermometer shall be so located that it shall at all times
				  indicate the temperature in degrees Fahrenheit of the water in the boiler at or
				  near the outlet.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-99 - Temperature control

Current through July 10, 2024
Each automatically fired hot water boiler shall be protected
				  from over-temperature by two temperature-operated controls.
Each individual automatically fired hot water boiler shall
				  have a safety limit control that will cut off the fuel supply to prevent water
				  temperature from exceeding the maximum allowable temperature of 250°F at
				  the boiler outlet. This water temperature safety control shall be constructed
				  to prevent a temperature setting above 250°F.
Each individual hot water boiler or each system of commonly
				  connected boilers without intervening valves shall have a control that will cut
				  off the fuel supply when the water temperature reaches an operating limit,
				  which shall be less than the maximum allowable temperature.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-100 - Low-water fuel cutoff

Current through July 10, 2024
Each automatically fired hot water heating boiler with heat
				  input greater than 400,000 BTU/HR shall have an automatic low-water fuel cutoff
				  which has been designed for hot water service, and it shall be so located as to
				  automatically cut off the fuel supply when the surface of the water falls to
				  the level established below.
As there is no normal waterline to be maintained in a hot
				  water heating boiler, any location of the low-water fuel cutoff above the
				  lowest safe permissible water level established by the boiler manufacturer is
				  satisfactory.
A coil-type boiler or a watertube boiler with heat input
				  greater than 400,000 BTU/HR requiring forced circulation to prevent overheating
				  of the coils or tubes shall have a flow-sensing device installed in the outlet
				  piping in lieu of the low-water fuel cutoff required above to automatically cut
				  off the fuel supply when the circulating flow is interrupted.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Existing Installations - Low Pressure Heating Boilers › Section 29-232-101 - Instrument, fittings and control mounted inside boiler jackets

Current through July 10, 2024
Any or all instruments, fittings, and controls required by
				  these rules may be installed inside of boiler jackets provided the water gage
				  on a steam boiler is accessible without the use of tools and provided the water
				  gage and pressure gage on a steam boiler or the thermometer and pressure gage
				  on a water boiler are visible through an opening or opening at all
				  times.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Electric Wiring › Section 29-232-102 - Electrical Code compliance

Current through July 10, 2024
All field wiring for controls, heat generating apparatus, and
				  other appurtenances necessary for the operation of the boiler or boilers should
				  be installed in accordance with the provisions of the National Electric Code
				  and/or should comply with the applicable local electrical codes. All boilers
				  supplied with factory mounted and wired controls, heat generating apparatus,
				  and other appurtenances necessary for the operation of the boilers should be
				  installed in accordance with the provisions of the nationally recognized
				  standards.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Electric Wiring › Section 29-232-103 - Flame safeguard requirements

Current through July 10, 2024
(a) Furnace
				explosions (combustion explosion) are caused by the sudden ignition of
				accumulated fuel and air in the firesides of the boiler. In order to reduce the
				chance of personal injury, damage to property, and loss of equipment from such
				explosions, the boiler shall be equipped with approved burners and controls,
				tested and maintained as recommended by a national recognized
				standard.
(b) Except as otherwise
				specifically provided, the provisions of this section apply to all gas, oil,
				pulverized coal, and combination gas and oil fired burners installed on boilers
				covered by these rules and regulations.
(c) The following nationally recognized
				standards, together with all addenda and amendments thereto, are adopted:
ANSI/ASME CSD-1-1998 Controls and safety devices for
				  automatically fired boilers; and
ANSI/NB-23 NBIC 1998 National Board Inspection Code.
ASME American Society of Mechanical Engineers:
United Engineering Center, 345 East 47th Street, New York, New York
				  10017.
NFPA National Fire Protection Association:
Batterymarch Park, Quincy, Massa-chusetts 02269.
(d) The above standards represents basic
				standards for the safe and efficient performance and substantial and durable
				construction of equipment. Inspection of the flame safeguard equipment will be
				in conjunction with the regular inspections of boilers.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Electric Wiring › Section 29-232-104 - Shutdown switches and circuit breakers

Current through July 10, 2024
A manually operated remote heating plant shutdown switch or
				  circuit breaker should be located just outside the boiler room door and marked
				  for easy identification. Consideration should also be given to the type and
				  location of the switch to safeguard against tampering. If the boiler room door
				  is on the building exterior the switch should be located just inside the door.
				  If there is more than one door to the boiler room, there should be a switch
				  located at each door.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Electric Wiring › Section 29-232-105 - Controls and heat generating apparatus

Current through July 10, 2024
Oil and gas-fired and electrically heated boilers should be
				  equipped with suitable primary (flame safeguards) safety controls, safety limit
				  switches, and burners or electric elements as required by a nationally
				  recognized standard. 
				  1
The symbol of the certifying organization 
				  2 which has investigated such
				  equipment as having complied with a nationally recognized standard shall be
				  affixed to the equipment and shall be considered as evidence that the unit was
				  manufactured in accordance with that standard.
1
Examples of these nationally
				recognized standards are: American National Standards Z21.13.1, Central Heating
				Gas Appliances, Volume I, Steam and Hot Water Boilers. American National
				Standards Z21.17, Domestic Gas Conversion Burners. Underwriters' Laboratories,
				Inc., UL 296, Standards for Safety, Oil Burners. Underwriters' Laboratories,
				Inc., UL 573, Electric Space Heating Equipment. Underwriters' Laboratories,
				Inc., UL 726, Standards for Safety Oil Fired Boiler Assemblies. Underwriters'
				Laboratories, Inc., UL 795, Standards for Safety Commercial-Industrial
				Gas-Heating Equipment.
2
A certifying organization is one that provides uniform testing,
				examination, and listing procedures under established, nationally recognized
				standards and that is acceptable to the authorities having
				jurisdiction.
Connecticut Administrative Code › Title 29 - Public Safety and State Police › 232 - Boiler Design, Construction, Installation, Repair, Use and Operation › Electric Wiring › Section 29-232-106 - Water gage glass and gage cocks

Current through July 10, 2024
Each steam boiler shall have at least one water gage glass
				  with the lowest visible part above the heating surfaces in the primary
				  combustion chamber. When, in the judgment of an inspector, the heating surfaces
				  above the low water line may be injured by contact with gases of high
				  temperature, the water gage shall be raised until the lowest visible part of
				  the gage glass is above such heating surface. Each steam boiler shall have two
				  or more gage cocks located within the visible length of the water gage glass,
				  except when such boiler is provided with two water gage
				  glasses.