reglab/statecodes huggingface dataset:
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Access in Inspection Openings › Section 14-9.3 - Required openings

Current through Register Vol. 46, No. 28, July 10, 2024
(a) All
						boilers or parts thereof must be provided with suitable manhole, handhole, or
						other inspection openings for examination or cleaning, except special types of
						boilers where such openings are manifestly not needed or used. Specific
						requirements for access openings in certain types of boilers appear in the ASME
						Code.
(b) An elliptical manhole
						opening shall be not less than 11 by 15 inches, or 10 by 16 inches in size. A
						circular manhole opening shall be not less than 15 inches in diameter. A
						manhole opening in a boiler drum or shell shall be not less than 15 inches in
						diameter. A handhole opening in a boiler drum or shell shall be not less than
						two and three-fourths by three and one-half inches, but it is recommended that,
						where possible, larger sizes be used.
(c) Manhole, handhole, inspection, and
						washout openings in a shell or unstayed head shall be designed in accordance
						with the ASME Code.
(d) When a
						threaded opening is to be used for inspection or washout purposes, it shall be
						not less than one-inch pipe size. The closing plug or cap shall be of
						nonferrous material (except for pressures over 250 pounds). The thread shall be
						a standard tapered pipe thread, except that a straight thread of equal strength
						may be used to prevent leakage.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.4 - Safety valve requirements

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Each
						boiler shall have at least one safety valve and if it has more than 500 square
						feet of bare tube water heating surface, or if an electric boiler has a power
						input more than 1,100 kw, it shall have two or more safety valves or safety
						relief valves. For a boiler with combined bare tube and extended water-heating
						surface exceeding 500 square feet, two or more safety valves or safety relief
						valves are required only if the design steam generating capacity of the boiler
						exceeds 4000 lb/hr. The method of computing the steam-generating capacity of
						the boiler is given as follows:
The maximum quantity of fuel C that can be burned per
						  hour at the time of maximum forcing is determined by a test. The maximum number
						  of heat units per hour, or CH, is then determined, using the values of H given
						  in the Table below. The weight of steam generated per hour is found by the
						  formula:
W =C ×
						  H/1100
													× 0.75
where
W = weight of steam generated/hr, lb
C = total weight or volume of fuel burned/hr at time of
						  maximum forcing, lb or cu ft
H = heat of combustion of fuel, Btu/lb or Btu/cu ft
						  (See Table below)
The sum ot the safety valve capacities marked on the
						  valves shall be equal to or greater than W.
For the purpose of checking the safety valve capacity,
						  the following values of heats of combustion of various fuels may be
						  used:
H = Btu/lb
Semibituminous coal .......
14,500
Anthracite .......
13,700
Screenings .......
12,500
Coke .......
13,500
Wood, hard or soft, kiln dried .......
7,700
Wood, hard or soft, air dried .......
6,200
Wood shavings .......
6,400
Peat, air dried, 25% moisture .......
7,500
Lignite .......
10,000
Kerosene .......
20,000
Petroleum, crude oil, Pennsylvania .......
20,700
Petroleum, crude oil, Texas .......
18,500
Municipal solid waste .......
7,800
H = Btu/cu ft
Natural gas .......
960
Blast-furnace gas .......
100
Producer gas .......
150
Water gas, uncarbureted .......
290
(b) Organic fluid vaporizer generators
						require special consideration as given in the ASME Code.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.7 - Safety valve and safety relief valve testing and repairs

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Testing frequency. The testing of
						frequencies of safety and safety relief valves will vary from plant to plant
						due to operating conditions. However, under normal conditions, the following
						schedule is required and a log must be kept of these tests:
(1) Power boilers where the maximum allowable
						working pressure is up to 400 psi:
(i)
						manually tested not less than once each month; and
(ii) pressure tested once each
						year.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.8 - Stamping of valves

Current through Register Vol. 46, No. 28, July 10, 2024
Each safety valve or safety relief valve shall be
						  plainly marked by the manufacturer in such a way that the markings will not be
						  obliterated in service. The markings may be stamped on the casing, or stamped
						  or cast on a plate or plates securely fastened to the casing, and shall contain
						  the following markings:
(a) The name
						or identifying trademark of the manufacturer.
(b) Manufacturer's design or type
						number.
(c) Size ________ in. Seat
						diameter ________ in.
(The pipe size of the valve inlet.)
(d) Pressure ............ lb.
(The steam pressure at which it is to blow.)
(e) Year built, or alternatively,
						a coding may be marked on the valve such that the valve manufacturer can
						identify the year built.
(f)
						Capacity ............ lb. per hr.
(In accordance with sections
						  14-9.9
						  and
						  14-9.12  of
						  this Subpart.)
(g) Capacity
						lift ............ in.
(Capacity lift-distance the valve disk rises under the
						  action of the steam when the valve is blowing under a pressure of three percent
						  above the set pressure.)
(h) ASME symbol.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.9 - Valve capacity

Current through Register Vol. 46, No. 28, July 10, 2024
(a) The
						minimum safety valve or safety relief valve relieving capacity for other than
						electric boilers, waste heat boilers, organic fluid vaporizer generators, and
						forced-flow steam generators with no fixed steam and waterline, when provided
						in accordance with section
						14-9.5(c)  of this
						Subpart shall be determined on the basis of the pounds of steam generated per
						hour per square foot of boiler heating surface and waterwall heating surface,
						as given in the following table:
Minimum pounds
										of steam per hour per square foot of surface
Boiler heating
										surface
Hand-fired
Stoker-fired
Oil, gas, or
									 pulverized-fuel-fired
Hand-fired
Stoker-fired
Oil, gas, or
									 pulverized-fuel-fired
Fire-tube boilers
5
7
8
8
10
14
Water-tube boilers
6
8
10
8
12
16
Note:
When a boiler
									 is fired only by a gas having a heat value not in excess of 200 Btu per cubic
									 foot, the minimum safety valve relieving capacity may be based on the values
									 given for hand-fired boilers above.
(1) The
						required steam relieving capacity in lb/hr of the safety relief valves on a
						high-temperature water boiler shall be determined by dividing the maximum
						output in Btu/hr at the boiler nozzle obtained by the firing of any fuel for
						which the unit is designed, by 1000.
(2) Any economizer which may be shut off from
						the boiler, thereby permitting the economizer to become a fired pressure
						vessel, shall have one or more safety relief valves with a total discharge
						capacity, calculated from the maximum expected heat absorption in Btu/hr, as
						determined by the manufacturer, divided by 1000. This absorption shall be
						stated in the stamping.
(3) The
						required relieving capacity in pounds per hour of the safety or safety relief
						valves on a waste heat boiler shall be determined by the manufacturer. When
						auxiliary firing is to be used in combination with waste heat recovery, the
						maximum output shall include the effect of such firing in the total required
						capacity. When auxiliary firing is to be used in place of waste heat recovery,
						the required relieving capacity shall be based on auxiliary firing or waste
						heat recovery, whichever is higher.
(4) The minimum safety valve or safety relief
						valve relieving capacity for electric boilers shall be 31/2 lb/hr/kw
						input.
(5) Organic fluid vaporizer
						generators require special consideration as given in the ASME Code.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.11 - Muffler on safety valve or safety relief valve

Current through Register Vol. 46, No. 28, July 10, 2024
(a) If a muffler is used on a safety valve or
						safety relief valve it shall have sufficient outlet area to prevent back
						pressure from interfering with the proper operation and discharge capacity of
						the valve. The muffler plates or other devices shall be so constructed as to
						avoid any possibility of restriction of the steam passages due to
						deposit.
(b) Mufflers shall not be
						used on high-temperature water boiler safety relief valves.
(c) When a safety valve or safety relief
						valve is exposed to outdoor elements which may affect operation of the valve,
						it is permissible to shield the valve with a satisfactory cover. The shield or
						cover shall be properly vented and arranged to permit servicing and normal
						operation of the valve.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.12 - Blowdown adjustment

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Safety
						valves shall be designed and constructed to operate without chattering and to
						attain full lift at a pressure no greater than 3 percent above their set
						pressure. After blowing down, all valves shall close at a pressure not lower
						than 96 percent of their set pressure, except that all drum valves installed on
						a single boiler may be set to reseat at a pressure not lower than 96 percent of
						the set pressure of the lowest set drum valve. The minimum blowdown for
						spring-loaded safety or safety relief valves shall be 2 percent of the set
						pressure. Safety valves used on forced-flow steam generators with no fixed
						steam and waterline, and safety relief valves used on high-temperature water
						boilers, may be set and adjusted to close after blowing down not more than 10
						percent of the set pressure. The valves for these special uses must be so
						adjusted and marked by the manufacturer.
(b) The blowdown adjustment shall be made and
						sealed by the manufacturer.
(c) The
						popping point tolerance plus or minus shall not exceed the following: two
						pounds for pressures up to and including 70 pounds, three percent for pressures
						from 71 to 300 pounds and 10 pounds for pressures from 301 to 1000 pounds, and
						one percent for pressures over 1000 pounds.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.13 - Safety valve construction and rating

Current through Register Vol. 46, No. 28, July 10, 2024
(a) To insure the valve being free, each
						safety valve shall have a substantial lifting device by which the valve disk
						may be positively lifted from its seat when there is at least 75 percent of
						full working pressure on the boiler. The lifting device shall be such that it
						cannot lock or hold the valve disk in lifted position when the exterior lifting
						force is released. Disks of safety relief valves used on high-temperature water
						boilers shall not be lifted while the temperature of the water exceeds 200°
						Fahrenheit. If it is desired to lift the valve disk to assure that it is free,
						this shall be done when the valve is subject cent of the set pressure. For
						high-temperature water boilers, the lifting mechanism shall be sealed against
						leakage.
(b) The seats and disks of
						safety valves shall be of suitable material to resist corrosion. The seat of a
						safety valve shall be fastened to the body of the valve in such a way that
						there is no possibility of the seat lifting.
(c) The spring shall be designed so that the
						full lift spring compression shall be no greater than 80 percent of the nominal
						solid deflection. The permanent set of the spring (defined as the difference
						between the free height and height measured 10 minutes after the spring has
						been compressed solid three additional times after presetting at room
						temperature) shall not exceed 0.5 percent of the free height.
(d)
(1) The
						spring in a safety valve or safety relief valve shall not be reset for any
						pressure more than five percent above or below that for which the valve is
						marked unless the new setting is within the spring design range established by
						the manufacturer or is determined to be acceptable to the manufacturer. If the
						set pressure is to be adjusted within the limits specified above, the
						adjustment shall be performed by the manufacturer, its authorized
						representative, or an assembler. An additional valve data tag identifying the
						new set pressure, capacity, and date shall be furnished and installed, and the
						valve shall be resealed.
(2) If the
						set pressure of a valve is changed so as to require a new spring, the spring
						shall be acceptable to the manufacturer. The spring installation and valve
						adjustment shall be performed by the manufacturer, its authorized
						representative, or an assembler. A new nameplate shall be furnished and
						installed, and the valve shall be resealed.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.14 - Superheater safety valves

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
						Every attached superheater shall have one or more safety valves near the
						outlet. If the superheater outlet header has a full, free, steam passage from
						end to end and is so constructed that steam is supplied to it at practically
						equal intervals throughout its length so that there is a uniform flow of steam
						through the superheater tubes and the header, the safety valve, or valves, may
						be located anywhere in the length of the header.
(b) The discharge capacity of the safety
						valve, or valves, on an attached superheater may be included in determining the
						number and size of the safety valves for the boiler, provided there are no
						intervening valves between the superheater safety valve and the boiler, and
						provided the discharge capacity of the safety valve, or valves, on the boiler,
						as distinct from the superheater, is at least 75 percent of the aggregate valve
						capacity required.
(c) Every
						independently fired superheater which may be shut off from the boiler and
						permit the superheater to become a fired pressure vessel shall have one or more
						safety valves having a discharge capacity equal to six pounds of steam per
						square foot of superheater surface measured on the side exposed to the hot
						gases. In the case of electrically heated superheaters, the safety valve
						capacity shall be based upon 31/2 lb/hr/kw input. The number of safety valves
						installed shall be such that the total capacity is at least equal to that
						required.
(d) A soot-blower
						connection may be attached to the same outlet from the superheater that is used
						for the safety-valve connection.
(e)
(1)
						Every safety valve used on a superheater discharging superheated steam at a
						temperature over 450 Fahrenheit shall have a casing, including the base, body,
						bonnet and spindle, of steel, steel alloy- or equivalent heat-resisting
						material.
(2) The valve shall have
						a flanged inlet connection, or a welding end inlet connection. It shall have
						the seat and disk of suitable heat erosive and corrosive-resisting material,
						and the spring fully exposed outside of the valve casing so that it shall be
						protected from contact with the escaping steam.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Safety Valves and Safety Relief Valves › Section 14-9.15 - Outlet connections

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Every
						boiler shall have proper outlet connections for the required safety valve, or
						valves, independent of any other outside steam connection, the area of opening
						to be at least equal to the aggregate areas of inlet connections of all of the
						safety valves to be attached thereto. An internal collecting pipe, splash
						plate, or pan may be used, provided the total area for inlet of steam thereto
						is not less than twice the aggregate areas of the inlet connections of the
						attached safety valves. The holes in such collecting pipes shall be at least
						one-quarter inch in diameter and the least dimension in any other form of
						opening for inlet of steam shall be one-quarter inch. Such dimensional
						limitations to operation for steam need not apply to steam scrubbers or driers
						provided the net free steam inlet area of the scrubber or drier is at least 10
						times the total area of the boiler outlets for the safety valves.
(b) If safety valves are attached to a
						separate steam drum or dome, the opening between the boiler proper and the
						steam drum or dome shall be not less than required by subdivision (a) of this
						section.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Water Level Indicators › Section 14-9.17 - Shutoff valves

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
(1) Each water-gage glass shall be equipped
						with a top and a bottom shutoff valve of such through-flow construction as to
						prevent stoppage by deposits of sediments. If the lowest valve is more than
						seven feet above the floor or platform from which it is operated, the operating
						mechanism shall indicate by its position whether the valve is open or closed.
						The pressure-temperature rating shall be at least equal to that of the lowest
						set pressure of any safety valve on the boiler drum and the corresponding
						saturated steam temperature.
(2)
						Straight-run globe valves of the ordinary type as shown in Figure P-43(a) shall
						not be used on such connections.
(3) Automatic shutoff valves on water gages,
						shall conform to the following requirements:
(i) check valves in upper and lower fittings
						shall be of solid noncorrosive metal ball type to avoid need for
						guides;
(ii) ball check valves in
						upper and lower fittings must open by gravity and the lower ball check valve
						must rise vertically to its seat;
(iii) the check balls must be not smaller
						than 1/2 inch in diameter, and the diameter of the circle of contact with the
						seat must be not greater than two-thirds of the diameter of the check ball. The
						space around each ball must be not less than 1/8 inch, and the travel movement
						from the normal resting place to the seat must be not less than 1/4
						inch;
(iv) the ball seat in the
						upper fitting must be a flat seat with either a square or a hexagonal opening,
						or otherwise arranged so that the steam passage can never be completely closed
						by this valve;
(v) the shutoff
						valve in the upper fitting must have a projection which holds the ball at least
						1/4 inch away from its seat when the shutoff valve is closed; and
(vi) the balls must be accessible for
						inspection. Means must be provided for removal and inspection of the lower ball
						check valve while the boiler is under steam pressure. These restrictions do not
						apply to closing the valves by external methods.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Water Level Indicators › Section 14-9.18 - Gage cocks

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Each boiler
						shall have three or more gage cocks located within the visible length of the
						water glass, except when the boiler has two water glasses located on the same
						horizontal lines.
(b) Boilers not
						over 36 inches in diameter in which the heating surface does not exceed 100
						square feet need have but two gage cocks.
(c) The gage cock connections shall not be
						less than one-half inch pipe size.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Water Level Indicators › Section 14-9.19 - Pressure and temperature gages

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Each boiler shall have a pressure gage so
						located that it is easily readable. The pressure gage shall be installed so
						that it shall at all times indicate the pressure in the boiler. Each steam
						boiler shall have the pressure gage connected to the steam space or to the
						water column or its steam connection. 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. For boilers carrying 500 pounds pressure or over, valves may be used in
						place of cocks. Steam gage connections which are filled with water or steam
						shall be suitable for the maximum allowable working pressure and steam
						temperature but if the temperature exceeds 406° Fahrenheit, brass or copper
						pipe or tubing shall not be used. The connections to the boiler, except the
						syphon, shall not be less than one-quarter inch standard pipe size but where
						steel or wrought-iron pipe or tubing is used, they shall be not less than
						one-half inch inside diameter. That portion of the connection used as a syphon
						next to the steam gage shall be not less than one-quarter inch inside
						diameter.
(b) The wall thickness of
						all pipe connections shall comply at least with the requirements of the ASME
						Code.
(c) Where the use of a pipe
						longer than 10 feet becomes necessary, an exception may be made to the rule
						that the gage must be arranged so that it cannot be shut off except by a cock
						placed near the gage, and a shutoff valve or cock arranged so that it can be
						locked or sealed open may be used near the boiler. Such a pipe shall be of
						ample size and arranged so that it may be cleared by blowing out.
(d) Each forced-flow steam generator with no
						fixed steam and waterline shall be equipped with pressure gages or other
						pressure measuring devices located as follows:
(1) at the boiler or superheater outlet
						(following the last section which involves absorption of heat);
(2) at the boiler or economizer inlet
						(preceding any section which involves absorption of heat); and
(3) upstream of any shutoff valve which may
						be used between any two sections of the heat absorbing surface.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Water Level Indicators › Section 14-9.20 - Steam gage dial

Current through Register Vol. 46, No. 28, July 10, 2024
The dial of the steam gage shall be graduated to
						  approximately double the pressure at which the safety valve is set but in no
						  case to less than one and one-half times this pressure.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Water Level Indicators › Section 14-9.21 - Inspector's test gage connection

Current through Register Vol. 46, No. 28, July 10, 2024
Each boiler shall be provided with a one-quarter inch
						  pipe size valved connection for the exclusive purpose of attaching a test gage
						  when the boiler is in service, so that the accuracy of the boiler steam gage
						  can be ascertained.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.22 - Fittings

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
(1) The flanges of all valves and pipe
						fittings of cast iron or steel shall conform to the American National Standards
						accepted by ASME.
Note:
Flange bolts or bolt studs shall conform to a standard
						  accepted by ASME and the bolts or bolt studs shall extend completely through
						  the nut. (Where the word "fittings" is used, it is understood that pipe
						  fittings are meant and it does not include, other types.)
(2) All valves and fittings shall be marked
						as required by ASME.
(3) Rolled or
						forged flanges may be in accordance with the requirements of ASME.
(4) Valves and other boiler appurtenances,
						such as water columns, may have fusion-welded joints provided the welding
						procedure and welding operator are qualified under the requirements of ASME
						except that no stress-relieving, radiographic examination, or inspection of the
						joint is required. The manufacturer shall furnish, if requested, a statement
						certifying that these requirements have been met.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.23 - Attachment of piping and external piping

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Piping connected to the outlet of a
						boiler for any purpose, and which comes within the requirement of this Part,
						shall be attached by screwing, welding or other means acceptable to the ASME
						Code.
(b) Fusion welding for
						sealing purposes at the juncture of bolted joints may be used.
(c) Welding may be used to attach piping to
						nozzles or fittings and shall comply with ASME requirements.
(d) All welded piping external to the boiler
						falling within Code jurisdiction shall conform to the provisions required by
						ASME and shall be fabricated and/or installed by the manufacturer or contractor
						authorized to use one or more of the ASME Code symbols shown below and within
						the scope authorized for each symbol:
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(e) Such piping contractors or manufacturers
						shall be responsible for the quality of the welding done by their organizations
						and for conformance to ASME requirements of procedures and welders.
(f) Fabricated and/or installed welded piping
						shall be inspected by an authorized inspector at such stages of the work as the
						inspector may elect. For main steam, feed inlet, blowoff and other connections
						over two inch pipe size the symbol used, together with the manufacturer's or
						contractor's name and serial number shall be stamped on the pipe, valve or
						fitting adjacent to the joint farthest from the boiler. For piping operating at
						temperatures above 500° Fahrenheit, the symbol may be stamped on a nameplate
						which is irremovably attached by welding, provided such welding is postweld
						heat treated, or on a circular metal band at least 1/8 inch thick. This band
						around the pipe shall be secured in such a manner as to prevent it from
						slipping off during handling and installation. Upon completion of the work a
						Form P-4A, partial data report, shall be executed in accordance with ASME
						requirements. American slip on flanges up to and including four inch pipe size
						may be attached to piping or boiler nozzles and shall conform to ASME
						requirements.
(g) The minimum
						number of threads that a pipe or fitting shall screw into a tapped hole shall
						conform to ASME requirements.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.24 - Stop valves

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
(1) Each steam-discharge outlet, except
						safety-valve or safety relief valves, or reheater inlet or outlet connections,
						shall be fitted with a stop valve located at an accessible point in the steam
						delivery line and as near to the boiler nozzle as convenient and practicable.
						When such outlets are over two inch pipe size, the valve or valves used on the
						connection shall be of the outside-screw-and-yoke rising-stem type so as to
						indicate from a distance by the position of its stem whether it is closed or
						open and the wheel may be carried either on the yoke or attached to the stem. A
						plug cock type valve may be used provided the plug is held in place by a guard
						or gland, the valve is equipped to indicate from a distance whether it is
						closed or open, and the valve is equipped with a slow-opening
						mechanism.
(2) If a shutoff valve
						is used between the boiler and its superheater, the safety valve capacity on
						the boiler proper must comply with ASME requirements. In a separately fired
						superheater installation, a stop valve is not required at the inlet or the
						outlet of the superheater.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.25 - Steam mains

Current through Register Vol. 46, No. 28, July 10, 2024
Provisions shall be made for the expansion and
						  contraction of steam mains connected to boilers, by providing substantial
						  anchorage at suitable points, so that there shall be no undue strain
						  transmitted to the boiler. Steam reservoirs shall be used on steam mains when
						  heavy pulsations of the steam currents cause vibration of the boiler shell
						  plates.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.26 - Superheater drains

Current through Register Vol. 46, No. 28, July 10, 2024
Each superheater shall be equipped with at least one
						  drain so located as to most effectively provide for the proper operation of the
						  apparatus.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.27 - Blowoff piping

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
(1) A blowoff as required herein is defined
						as a pipe connection provided with valves through which the water in the boiler
						may be blown out under pressure, excepting drains such as are used on water
						columns, gage glasses, or piping to feedwater regulators, etc., used for the
						purpose of determining the operating condition of such equipment. Piping
						connections used primarily for continuous operation, such as deconcentrators on
						continuous blowdown systems, are not classed as blowoffs but the pipe
						connections and all fittings up to and including the first shutoff valve shall
						be equal at least to the pressure requirements for the lowest set pressure of
						any safety valve on the boiler drum and with the corresponding saturated steam
						temperature.
(2) A surface blowoff
						shall not exceed 21/2 inch pipe size, and the internal and external pipes, when
						used, shall form a continuous passage, but with clearance between their ends
						and arranged so that the removal of either will not disturb the other. A
						properly designed steel bushing, similar to or the equivalent of those shown in
						Figure P-42, or a flanged connection shall be used.
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(3) Blowoff piping shall conform to the
						requirements of ASME, except that galvanized wrought iron or steel, brass or
						copper pipe shall not be used.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.28 - Blowoff cock

Current through Register Vol. 46, No. 28, July 10, 2024
(a) A bottom
						blowoff cock shall have the plug held in place by a guard or gland. The end of
						the plug shall be distinctly marked in line with the passage.
(b)
(1) The
						blowoff valve or valves and the pipe between them and the boiler shall be of
						the same size except where a larger pipe for the return of condensation is
						used.
(2) All fittings between the
						boiler and valves shall be of steel for pressures over 100 psi and the
						thickness of pipe and fittings shall not be less than that of schedule 80
						pipe.
(3) In all cases the valves
						and fittings from the boiler to and including the required stop valves shall be
						equal at least to the requirements of the applicable standards given in ASME
						for a pressure 1.25 times the maximum allowable working pressure of the boiler
						or 225 psi more than the maximum allowable working pressure of the boiler,
						whichever is less, but shall not be less than 100 psi.
(4) When the pressure does not exceed 200
						psi, the valves or cocks shall be bronze, cast iron, ductile iron, or steel.
						The valves or cocks if of cast iron, shall meet the requirements of the
						applicable American National Standard for class 250 as given by ASME and if of
						bronze, steel, or ductile iron, construction shall meet the requirements of the
						applicable standards given by ASME.
(5) For pressures over 200 psi, the valves or
						cocks shall be of steel construction equal at least to the requirements of the
						American National Standard for 300 psi as given in the ASME Code.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.29 - Blowoff pipe and fittings

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
(1) On all boilers, except electric steam
						boilers having a normal water content not exceeding 100 gallons, and those used
						for traction and/or portable purposes, when the allowable working pressure
						exceeds 100 psi, each bottom blowoff pipe shall have two slow-opening valves,
						or one quick-opening valve or cock at the boiler nozzle followed by a
						slow-opening valve. All valves shall comply with section
						14-9.28(b)(4) and
						(5)  of this Subpart.
(2) By "slow-opening valve" is meant one
						which requires at least five 360- degree turns of the operating mechanism to
						change from full-closed to full-opening, and vice versa.
(3) On a boiler having multiple blowoff
						pipes, a single master valve may be placed on the common blowoff pipe from the
						boiler, in which case only one valve on each individual blowoff is required. In
						this case either the master valve or the individual valve or cocks must be of
						the slow-opening type.
(4) Two
						independent slow-opening valves, or a slow opening valve and a quick-opening
						valve, or a cock may be combined in one body provided the combined fitting is
						the equivalent of two independent slow-opening valves, or a slow-opening valve
						and a quick-opening valve or a cock so that the failure of one to operate could
						not affect the operation of the other.
(5) All water walls and water screens which
						do not drain back into the boiler and all integral economizers shall be
						equipped with drain or blowoff valves conforming with the requirements of
						subdivisions (a) and (b) of this section and also of sections
						14-9.27(b)
						 and
						14-9.28(a) 
						of this Subpart.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.30 - Requirements for drains

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Ample
						drains shall be provided where required to permit complete drainage of all
						piping, superheaters, water walls, water screens, integral economizers, high
						temperature water boilers, and all other boiler components in which water may
						collect. Piping shall conform to the requirements of ASME.
(b) Each superheater shall be equipped with
						at least one drain so located as to most effectively provide for the proper
						operation of the apparatus.
(c)
						Each high-temperature water boiler shall have a one inch minimum pipe size
						bottom drain connection in direct connection with the lowest water space
						practical for external piping conforming to the requirements of ASME.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.31 - Feed piping

Current through Register Vol. 46, No. 28, July 10, 2024
(a) The
						feedwater shall be introduced into a boiler in such a manner that the water
						will not be discharged directly against surfaces exposed to gases of high
						temperature or to direct radiation from the fire, or close to any riveted
						joints of the furnace sheets or of the shell. For pressures of 400 pounds or
						over, the feedwater inlet through the drum shall be fitted with shields,
						sleeves, or other suitable means to reduce the effects of temperature
						differentials in the shell or head. If necessary, the discharge end of a feed
						pipe shall be fitted with a baffle to divert the flow from the riveted joint.
						Feedwater, other than condensate returned as provided for in section
						14-9.27(b) 
						of this Subpart, shall not be introduced through the blowoff.
(b) When a horizontal-return tubular boiler
						exceeds 40 inches in diameter, the feedwater shall discharge at about three
						fifths the length from that end of the boiler which is subjected to the hottest
						gases of the furnace (except a horizontal-return tubular boiler equipped with
						an auxiliary feedwater heating and circulating device), above the central rows
						of tubes. The feed pipe shall be carried through the head or shell farthest
						from the point of discharge of the feedwater in the manner specified for a
						surface blowoff in section 14- 9.27(a) of this Subpart, and be securely
						fastened inside the shell above the tubes.
(c) In vertical tubular boilers having tubes
						four feet or less in length, the feedwater shall be introduced at a point not
						less than one fourth the length of the tube above the lower tube sheet or crown
						sheet. For tubes more than four feet in length, the feedwater shall be
						introduced at a point not less than 12 inches above the crown sheet. When the
						boiler is under pressure feedwater shall not be introduced through the openings
						or connections used for the water column, the water gage glass, or the gage
						cocks. In closed systems the water may be introduced through any opening when
						the boiler is not under pressure.
New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 14 - Construction, Installation, Inspection And Maintenance Of High Pressure Boilers; Construction Of Unfired Pressure Vessels › Subpart 14-9 - Power Boilers: New Installations › Fittings and Appliances › Section 14-9.32 - Boiler bushing, flange, for feed pipe connections

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Figure P-42 illustrates a typical form of
						flange for use on boiler shells for passing through piping such as feed,
						surface blowoff connections, etc., and which permits of the pipes being screwed
						in solid from both sides in addition to the reinforcing of the opening in the
						shell. The pipes shall be attached as provided in section
						14-9.23 
						of this Subpart.
(b) In these and
						other types of boilers where both internal and external pipes making a
						continuous passage are employed, the boiler bushing or its equivalent shall be
						used.