reglab/statecodes huggingface dataset:
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 16 - Validity of Inspection Certificate › Rule 15-10-76-2.16.1

Current through June 25, 2024
An inspection certificate, issued in accordance with the
						Act, shall be valid until expiration unless some defect or condition affecting
						the safety of the boiler or pressure vessel is disclosed, provided, however,
						that a certificate issued for a boiler or pressure vessel inspected by a
						Special Inspector shall be valid only if the boiler or pressure vessel for
						which it was issued continues to be insured by a duly authorized insurance
						company.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 17 - Restamping Boilers and Pressure Vessels › Rule 15-10-76-2.17.1

Current through June 25, 2024
When the stamping on a boiler or pressure vessel becomes
						indistinct, the inspector shall instruct the owner or user to have it
						restamped. Request for permission to restamp the boiler or pressure vessel
						shall be made to the Chief Inspector, and the proof of the original stamping
						shall accompany the request. The chief Inspector may grant such authorization.
						Restamping authorized by the Chief Inspector shall be done only in the presence
						of an inspector, and shall be identical with the original stamping, except that
						it will not be required to restamp the ASME Code Symbol. Notice of completion
						of such restamping shall be filed with the Chief Inspector by the inspector who
						witnessed the stamping on the boiler or pressure vessel, together with a
						facsimile of the stamping applied.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 18 - Penalty for Operation of Unsafe Boilers or Pressure Vessels › Rule 15-10-76-2.18.1

Current through June 25, 2024
If, upon inspection, a boiler or pressure vessel is
						found to be in such condition that it is unsafe to operate, the inspector shall
						notify the Chief Inspector as required by the Act and the inspection
						certificate shall be suspended by the Chief Inspector. Any person, firm,
						partnership or corporation causing such objects to continue to be operated
						shall be subject to the penalty provided in the Act.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 19 - Condemned Boiler and Pressure Vessels › Rule 15-10-76-2.19.1

Current through June 25, 2024
Any boiler or pressure vessel having been inspected and
						declared unsafe by the Chief Inspector or Deputy Inspector shall be stamped by
						the inspector with an arrowhead stamp having an overall length of 1/2 inch and
						width of 3/8 inch on either side of the letters "XXX" and the letters of the
						State, as shown by the following facsimile, which will designate a condemned
						boiler or pressure vessel:
* XXX
MS
XXX *
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 19 - Condemned Boiler and Pressure Vessels › Rule 15-10-76-2.19.2

Current through June 25, 2024
Any person, firm, partnership, or corporation using or
						offering for sale a condemned boiler or pressure vessel for operation within
						this State shall be subject to the penalties provided by the
						Act.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 20 - Reinstallation of Standard Boilers or Pressure Vessels › Rule 15-10-76-2.20.1

Current through June 25, 2024
If a standard boiler or pressure vessel located in
						Mississippi is to be moved to another state for temporary use or repair,
						application shall be made by the owner or user to the Chief Inspector for
						permission to reinstall the boiler or pressure vessel in
						Mississippi.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 21 - Reinstallation of Nonstandard Boilers or Pressure Vessels › Rule 15-10-76-2.21.1

Current through June 25, 2024
A nonstandard boiler or pressure vessel which is moved
						outside the boundaries of Mississippi cannot be reinstalled in Mississippi
						without securing permission from the Board. Shipment of nonstandard boiler and
						pressure vessels into this state for use is prohibited without permission from
						the Board.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 22 - Installation of Used or Secondhand Boilers or Pressure Vessels › Rule 15-10-76-2.22.1

Current through June 25, 2024
Before a used or secondhand boiler or pressure vessel
						can be shipped for installation into Mississippi, an inspection must be made by
						an inspector qualified by an examination equal to that required by Mississippi,
						or by an inspector holding a National Board Commission, and data submitted by
						him shall be filled by the owner or user of the boiler or pressure vessel with
						the Chief Inspector for his approval. Such boilers and pressure vessels when
						installed in Mississippi shall be equipped with fittings and appliances that
						comply with the Rules and Regulations for new installations.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 23 - Reinstalled Boiler or Pressure Vessel › Rule 15-10-76-2.23.1

Current through June 25, 2024
When a stationary boiler or pressure vessel is moved and
						reinstalled, the attached fittings and appliances shall comply with these Rules
						and Regulations for new installations.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 24 - Factor of Safety for Existing Installations › Rule 15-10-76-2.24.1

Current through June 25, 2024
Any inspector may increase the factor of safety on any
						existing installation if the condition of the boiler or pressure vessel
						warrants it.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 24 - Factor of Safety for Existing Installations › Rule 15-10-76-2.24.2

Current through June 25, 2024
If the owner or user does not concur with the
						inspector's decision, the owner or user may appeal to the Board, which may
						request a joint inspection by the Chief Inspector and the Deputy Inspector or
						Special Inspector. Each inspector shall render his report to the Board and the
						Board shall render the final decision, based upon the data contained in the
						inspector's reports.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 25 - Repairs by Welding › Rule 15-10-76-2.25.1

Current through June 25, 2024
When major repairs or alterations are to be made by
						welding, they shall follow generally accepted nationwide engineering
						standards.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 26 - Riveted Patches › Rule 15-10-76-2.26.1

Current through June 25, 2024
In applying riveted patches, the design of the patch and
						method of installation shall be in accordance with the National Board
						Inspection Code, Chapter VI.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 27 - Removal of Safety Appliances › Rule 15-10-76-2.27.1

Current through June 25, 2024
No person shall attempt to remove or do any work on any
						safety appliance prescribed by these Rules and Regulations while a boiler or
						pressure vessel is in operation, except as provided in applicable sections of
						the ASME Code. Should any of these appliances be removed for repair during an
						outage of a boiler or pressure vessel, they must be reinstalled and in proper
						working order before the object is again placed in service.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 27 - Removal of Safety Appliances › Rule 15-10-76-2.27.2

Current through June 25, 2024
No person shall load the safety valve or valves in any
						manner to maintain a working pressure in excess of that stated on the
						inspection certificate.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 28 - Requirements for New Installations › Rule 15-10-76-2.28.1

Current through June 25, 2024
No boiler or pressure vessel shall hereafter be
						installed in this State unless it has been constructed, inspected and stamped
						in conformity with the ASME Code, except:
1. Those exempt by the Act.
2. Those stamped Mississippi Special or
					 Mississippi Standard.
3. Those
					 existing boilers and pressure vessels which are to be reinstalled.
a. All new boiler and pressure vessel
					 installations, including reinstalled and second-hand boilers and pressure
					 vessels, shall be installed in accordance with the requirement of the ASME Code
					 and these Rules and Regulations.
b.
					 A boiler or pressure vessel constructed equivalent to ASME standards, or having
					 the standard stamping of another state that has adopted a standard of
					 construction equivalent to the standard of this state, may be accepted by the
					 Chief Inspector provided, however, that the person desiring to install the
					 boiler or pressure vessel shall make application for the installation prior to
					 construction and shall file with the application the manufacturer's data report
					 covering the construction of the boiler or pressure vessel in
					 question.
c. The stamping shall not
					 be concealed by lagging or paint and shall be exposed at all times unless a
					 suitable record is kept of the location of the stamping so that it may be
					 readily uncovered at any time this may be desired.
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 2 - Administration › Subchapter 29 - Application of State Numbers › Rule 15-10-76-2.29.1

Current through June 25, 2024
Upon completion of the installation of a new boiler or
						pressure vessel or at the time of the initial certificate inspection of an
						existing installation, each boiler or pressure vessel shall be identified by
						the inspector with a Mississippi serial number, consisting of letters and
						figures to be not less than 5/16 inch in height and ranged as follows:
1. All boiler and pressure vessels in
					 Mississippi shall be stamped or shall have securely attached a metal tag of not
					 less than one inch in height, which shall have the serial number of the state
					 stamped thereon.
2. All cast-iron,
					 low pressure heating boilers shall have securely attached to the front of the
					 boiler a metal tag of not less than one inch in height, which shall have the
					 serial number of the state stamped thereon.
3. All pressure vessels constructed of cast
					 iron, or of material of such thickness that it should not be stamped, shall
					 have securely attached a metal tag not less than one inch in height, which
					 shall have the serial number of the state stamped thereon.
a. Power Boilers: MS 0000
b. Low Pressure Heating Boilers: MS 00000
					 H
c. Pressure Vessels: MS 000000
					 V
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.1 - High Temperature Water Boilers - Age Limit of Existing Boilers

Current through June 25, 2024
1. The age limit of any boiler of nonstandard
					 construction, installed prior to August 6, 1975, shall be 30 years except that,
					 after a thorough internal and external inspection, and a hydrostatic pressure
					 test of 1 1/2 times these allowable working pressure and held for a period of
					 at least 30 minutes, during which time no distress or leakage develops, any
					 boiler having other than a riveted, longitudinal, lap joint may be continued in
					 operation without reduction in working pressure. The age limit of any boiler
					 having riveted, longitudinal, lap joints and operating at a pressure in excess
					 of 50 psi shall be 20 years. This type of boiler, when removed from an existing
					 setting, shall not be installed for a pressure in excess of 15 psig. A
					 reasonable time for replacement, not to exceed one year, may be given at the
					 discretion of the Chief Inspector.
2. The shell or drum of a boiler in which a
					 typical "lap seam crack" is discovered along a longitudinal riveted joint for
					 either butt or lap joints shall be permanently discontinued for use under steam
					 pressure. By "lap seam crack" is meant the typical crack frequently found in
					 lap joints extending parallel to the longitudinal joint and located either
					 between or adjacent to rivet holes.
3. The age limit of boilers of standard
					 construction, installed prior to August 6, 1975, shall be determined from the
					 results of a thorough internal and external inspection by an authorized
					 inspector and the application of an appropriate pressure test. Hydrostatic test
					 pressure shall be at 1 1/2 times the allowable working pressure and maintained
					 for 30 minutes. The boiler may be continued in service at the same working
					 pressure provided there is no evidence of leakage or distress under these test
					 conditions.
4. The phenomenon of
					 brittle fracture may result from stresses imposed during hydrostatic testing
					 below the Nil-Ductility Transition Temperature of the materials. Where such
					 data is unavailable on site, it is suggested that the manufacturer be contacted
					 for the recommended minimum temperature to be used during hydrostatic
					 testing.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.2 - Maximum Allowable Working Pressure for Standard Boilers

Current through June 25, 2024
The maximum allowable working pressure for standard
						boilers shall be determined in accordance with the applicable provisions of the
						edition of the ASME Code under which they were constructed and
						stamped.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.3 - Maximum Allowable Working Pressure for Nonstandard Boilers

Current through June 25, 2024
1. The maximum allowable working pressure on
					 the shell of a nonstandard boiler shall be determined by the strength of the
					 weakest section of the structure, computed from the thickness of the plate, the
					 tensile strength of the plate, the efficiency of the longitudinal joint or tube
					 ligaments, the inside diameter of the weakest course and the factor of safety
					 allowed by these rules and regulations.
TStE / RSF = maximum allowable working pressure,
								  psig where:
TS = ultimate tensile strength of shell plates,
								  psi
t = minimum thickness of shell plate, in weakest
								  course, inches
E = efficiency of longitudinal joint
For tube ligaments and riveted
								  construction, E shall be determined by the rules given in Section I, Part PR,
								  of the ASME Code for Power Boilers. For seamless construction, E shall be
								  considered 100 percent.
R = inside radius of the weakest course of the
								  shell, in inches
FS = factor of safety permitted
2. Tensile strength: When the tensile
					 strength of steel or wrought iron shell plates is not known, it shall be taken
					 as 55,000 psi for steel and 45,000 psi for wrought iron.
3. Crushing strength of mild steel: The
					 resistance to crushing of mild steel shall be taken at 95,000 psi
					 cross-sectional area.
4. Strength
					 of rivets in shear
a. When computing the
					 ultimate strength of rivets in shear, the following values, in pounds per
					 square inch, of the cross-sectional area of the rivet shank shall be used
PSI (Table 1)
Iron rivets in single shear
38,000
Iron rivets in double shear
76,000
Steel rivets in single shear
44,000
Steel rivets in double shear
88,000
b. When the diameter of the rivet holes in
					 the longitudinal joints of a boiler is not known, the diameter and
					 cross-sectional area of rivets, after driving, may be selected from Table 1, or
					 as ascertained by cutting out one rivet in the body of the joint.
Table 2: Sizes of rivets based on plate thickness
Thickness of plate, inches
1/4 9/32 5/16 11/32 3/8 13/32
Diameter of rivet after driving,
								  inches
11/16 11/16 3/4 3/4 13/16 13/16
Thickness of plate, inches
7/16 15/32 1/2 9/16 5/8
Diameter or rivet after driving,
								  inches
15/16 15/16 15/16 1-1/16 1-1/16
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.4 - Cast-Iron Headers and Mud Drums

Current through June 25, 2024
The maximum allowable working pressure on a water-tube
						boiler, the tubes of which are secured to cast-iron or malleable-iron headers,
						or which have cast-iron mud drums, shall not exceed 160 psig.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.5 - Pressure on Cast-Iron Boilers

Current through June 25, 2024
The maximum allowable working pressure for any cast-iron
						boiler, except hot water boilers, shall be 15 psig.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.7 - Boiler Feeding

Current through June 25, 2024
1. Each boiler
					 shall have a feed supply which will permit it to be fed at any time while under
					 pressure.
2. A boiler having more
					 than 500 square feet of water-heating surface shall have at least two means of
					 feeding, one of which shall be an approved feed pump, injector or inspirator. A
					 source of feed directly from water mains at a pressure six percent greater than
					 the set pressure of the safety valve with the highest setting may be considered
					 one of the means. As provided for in the ASME Power Boiler Code, Section I,
					 boilers fired by gaseous, liquid, or solid fuel in suspension may be equipped
					 with a single means of feeding water provided means are furnished for the
					 immediate shutoff of heat input if the water feed is interrupted.
3. The feedwater shall be introduced into the
					 boiler in such manner that it will not be discharged close to riveted joints of
					 shell or furnace sheets, or directly against surfaces exposed to products of
					 combustion, or to direct radiation from the fire.
4. The feed piping to the boiler shall be
					 provided with a check valve near the boiler and a valve or cock between the
					 check valve and the boiler. When two or more boilers are fed from a common
					 source, there shall also be a valve on the branch to each boiler between the
					 check valve and source of supply. Whenever a globe valve is used on feed
					 piping, the inlet shall be under the disk of the valve.
5. In all cases where returns are fed back to
					 the boiler by gravity, there shall be a check valve and stop valve in each
					 return line, the stop valve to be placed between the boiler and the check
					 valve, and both shall be located as close to the boiler as is practicable. It
					 is recommended that no stop valves be placed in the supply and return pipe
					 connections of a single boiler installation.
6. Where deaerating heaters are not employed,
					 it is recommended that the temperature of the feedwater be not less than
					 120ø F to avoid the possibility of setting up localized stress. Where
					 deaerating heaters are employed, it is recommended the minimum feedwater
					 temperature be not less than 215ø F so that dissolved gases may be
					 thoroughly released.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.8 - Water Level Indicators

Current through June 25, 2024
1. No outlet
					 connections (except for damper regulator, feedwater regulator, low-water fuel
					 cutout, drain, steam gauges, 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 3/4 inch pipe size, the drain to be
					 piped to a safe location.
2. Each
					 boiler shall have three or more gauge cocks located within the visible length
					 of the water glass, except when the boiler has two water glasses located on the
					 same horizontal lines. Boilers not over 36 inches in diameter, in which the
					 heating surface does not exceed 100 square feet, need have but two gauge
					 cocks.
3. For all installations
					 where the water gauge glass or glasses are more than 30 feet above the boiler
					 operating floor, it is recommended that remote water-level indicating or
					 recording gauges be installed at eye height above the operating
					 floor.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.9 - Steam Gauges

Current through June 25, 2024
1. Each steam
					 boiler shall have a steam gauge, with dial range not less than 1 1/2 times the
					 maximum allowable working pressure, connected to the steam space or to the
					 steam connection to the water column. The steam gauge shall be connected to a
					 siphon or equivalent device of sufficient capacity to keep the gauge tube
					 filled with water and so arranged that the gauge cannot be shut off from the
					 boiler except by a cock placed near the gauge 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.
2. When a steam gauge
					 connection longer than eight feet becomes necessary, a shutoff valve may be
					 used near the boiler provided the valve is of the outside-screw-and-yoke type
					 and is locked open. The line shall be of ample size with provision for free
					 blowing.
3. Each boiler shall be
					 provided with a connection and suitable valving which connects to the steam
					 space of each boiler for the exclusive purposes of attaching a test gauge when
					 the boiler is in service so that the accuracy of the boiler steam gauge may be
					 ascertained.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.10 - Stop Valves

Current through June 25, 2024
1. Except for a
					 single-boiler, prime-mover installation, each steam outlet from a boiler
					 (except safety-valve and water column connections) shall be fitted with a stop
					 valve located as close as practicable to the boiler.
2. In a single-boiler, prime-mover
					 installation, the steam stop valve 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.
3. 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.
4. When boilers provided with manholes are
					 connected to a common steam main, the steam connection from each boiler shall
					 be fitted with two stop valves having an ample free-blow drain between them.
					 The discharge of the 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.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.11 - Blowoff Connection

Current through June 25, 2024
1. The construction
					 of the setting around each blowoff 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 blowoff
					 piping.
2. All blowoff piping, when
					 exposed to furnace heat, shall be protected by firebrick or other
					 heat-resisting material, so constructed that the piping may be inspected
					 readily.
3. Each boiler shall have
					 a blowoff pipe, fitted with a 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 shall not be permitted. When the
					 maximum allowable working pressure exceeds 100 psig, each blowoff pipe shall be
					 provided with two valves or a valve and cock.
4. Blowoff piping shall comply with the
					 requirements of the ASME Code, Section I, from the boiler to the valve or
					 valves, and shall be run full size without use of reducers or bushings. The
					 piping shall not be galvanized.
5.
					 All fittings between the boiler and blowoff valve shall be of steel. In case of
					 renewal of blowoff pipe or fittings, they shall be installed in accordance with
					 the rules and regulations for new installations of the ASME Code.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.12 - Repairs and Renewals of Boiler Fittings and Appliances

Current through June 25, 2024
Whenever repairs are made to fittings or appliances or it
						becomes necessary to replace them, such repairs or replacements shall comply
						with the requirements of the ASME Code.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.13 - Recommendations for Operation

Current through June 25, 2024
It is recommended that Section VII of the ASME Code
						covering Recommended Rules for the Care of Power Boilers be used as a guide for
						proper and safe operating practices.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 1 - Power and High Pressure › Rule 15-10-76-3.1.14 - Conditions Not Covered by These Requirements

Current through June 25, 2024
All cases not specifically covered by these requirements
						shall be treated as new installations or may be referred to the Chief Inspector
						for instructions concerning the requirements.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.1 - Standard Boilers

Current through June 25, 2024
The maximum allowable working pressure of standard
						boilers shall in no case exceed the pressure indicated by the manufacturer's
						identification stamped or cast on the boiler or on a plate secured to
						it.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.2 - Nonstandard Riveted Boilers

Current through June 25, 2024
The maximum allowable working pressure on the shell of a
						nonstandard riveted heating boiler shall be determined in accordance with Item
						3 covering Existing Installations, Power Boilers, except that in no case shall
						the maximum allowable working pressure of a steam heating boiler exceed 15
						psig, or a hot-water boiler exceed 160 psig or 250 °F
						temperature.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.3 - Nonstandard Welded Boilers

Current through June 25, 2024
The maximum allowable working pressure of a nonstandard
						steel or wrought iron heating boiler of welded construction shall not exceed 15
						psig for steam. For other than steam service, the maximum allowable working
						pressure shall be calculated in accordance with Section IV of the ASME
						Code.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.4 - Nonstandard Cast-Iron Boilers

Current through June 25, 2024
1. The maximum
					 allowable working pressure of a nonstandard boiler composed principally of
					 cast-iron shall not exceed 15 psig for steam service or 30 psig for hot-water
					 service.
2. The maximum allowable
					 working pressure of a nonstandard boiler having cast-iron shell or heads and
					 steel or wrought iron tubes shall not exceed 15 psig for steam service or 30
					 psig for hot-water service.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.5 - Safety Valves

Current through June 25, 2024
1. Each steam
					 boiler shall have one or more officially rated safety valves of the spring pop
					 type adjusted to discharge at a pressure not to exceed 15 psig. Seals may 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 two inch pipe size, the drain
					 hole or holes shall be tapped not less than 3/8 inch pipe size. For valves less
					 than two inches, the drain hole shall not be less than 1/4 inch in
					 diameter.
2. No safety valve for a
					 steam boiler shall be smaller than 1/2 inch unless the boiler and radiating
					 surfaces consist of a self-contained unit. No safety valve shall be larger than
					 4 1/2 inches. The inlet opening shall have an inside diameter equal to, or
					 greater than, the seat diameter.
3.
					 The minimum relieving capacity of the valve or valves shall be governed by the
					 capacity marking on the boiler.
4.
					 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 1,000, 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 will have to be provided than the minimum
					 specified by these rules. In every case, the requirements of (e) below shall be
					 met.
Table 3: Minimum pounds of steam per hour per square foot
						of heating surface
Boiler Heating Surface:
Firetube Boilers
Watertube Boilers
Hand Fired
5
6
Stoker Fired
7
8
Oil, gas, or pulverized fuel fired
8
10
Waterwall Heating Surface:
Firetube Boilers
Watertube Boilers
Hand Fired
8
8
Stoker Fired
10
12
Oil, gas, or pulverized fuel fired
14
16
Notes:
a. When a
					 boiler is fired only by a gas giving a heat value not in excess of 200 BTU per
					 cubic foot, the minimum safety valve or safety relief valve relieving capacity
					 may be based on the value given for handfired boilers above.
b. The minimum safety valve or safety relief
					 valve relieving capacity for electric boilers shall be 3 1/2 pounds per hour
					 per kilowatt input.
c. For heating
					 surface determination, see ASME Code, Section IV, para HG-403.
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.7 - Valve Replacement

Current through June 25, 2024
Safety valves and safety relief valves requiring repairs
						shall be replaced with a new valve or repaired by the manufacturer or his
						authorized representative.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.8 - Pressure Relieving Devices

Current through June 25, 2024
Boilers and fired storage water heaters exempt in Article
						I, Items 7 (d) and 7 (e), shall be equipped with pressure relieving devices in
						accordance with the requirements of Section IV of the ASME Boiler and Pressure
						Vessel Code.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.9 - Instruments, Fittings and Control Requirements

Current through June 25, 2024
Instruments, fittings and controls for each boiler
						installation shall comply with the requirements of the ASME Heating Boiler
						Code, Section IV, Part HG, Article 6.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.10 - Low Water Fuel Cutoff

Current through June 25, 2024
1. 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, so located as to automatically cut off the fuel
					 supply when the surface of the water falls to the level established in
					 Paragraph (b), also see Figure HG-702.2, ASME Heating Boiler Code, Section
					 IV).
2. 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.
3. A coil type boiler or a water tube boiler
					 with heat input greater than 400,000 BTU/HR requiring forced circulation, to
					 prevent overheating of the coils or tubes, should have a flow sensing device
					 installed in the outlet piping, in lieu of the low water fuel cutoff required
					 in Paragraph (a), to automatically cut off the fuel supply when the circulating
					 flow is interrupted.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.11 - Steam Gauges

Current through June 25, 2024
1. Each steam
					 boiler shall have a steam gauge connected to its steam space, its water column,
					 or its steam connection, by means of a siphon or equivalent device exterior to
					 the boiler. The siphon shall be of sufficient capacity to keep the gauge tube
					 filled with water and so arranged that the gauge cannot be shot off from the
					 boiler except by a cock with a tee or lever handle placed in the pipe near the
					 gauge. The handle of the cock shall be parallel to the pipe in which it is
					 located when the cock is open.
2.
					 The range of the scale on the dial of a steam boiler steam gauge shall be not
					 less than 30 psi. The gauge shall be provided with effective stops for the
					 indicating pointer at the zero point and at the maximum pressure point. The
					 travel of the pointer from zero to full scale shall be at least three
					 inches.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.12 - Pressure or Altitude Gauges

Current through June 25, 2024
1. Each hot-water
					 boiler shall have a pressure or altitude gauge 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 hear the gauge. The
					 handle of the cock shall be parallel to the pipe in which it is located when
					 the cock is open.
2. The range of
					 the scale on the dial of the pressure or altitude gauge shall be not less than
					 1 1/2 times nor more than three times the maximum allowable working pressure.
					 The gauge shall be provided with effective stops for the indicating pointer at
					 the zero point and at the maximum pressure point.
3. Piping or tubing for pressure or altitude
					 gauge connections shall be of nonferrous metal when smaller than one inch pipe
					 size.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.13 - Thermometers

Current through June 25, 2024
Each hot-water boiler shall have a thermometer so located
						and connected that it shall be easily readable when observing the water
						pressure or altitude gauge. The thermometer shall be so located that it will at
						all times indicate the temperature in degrees Fahrenheit of the water in the
						boiler at or near the outlet.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.14 - Water Gauge Glasses

Current through June 25, 2024
1. Each steam
					 boiler shall have one or more water gauge glasses attached to the water column
					 or boiler by means of valved fittings. The lower fitting shall be provided with
					 a drain valve of the straightaway type with opening not less than 1/4 inch
					 diameter to facilitate cleaning. Gauge glass replacement shall be possible
					 while the boiler is under pressure.
2. Transparent material, other than glass,
					 may be used for the water gauge provided that the material has proved suitable
					 for the pressure, temperature and corrosive conditions encountered in
					 service.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.15 - Stop Valves and Check Valves

Current through June 25, 2024
1. If a boiler can
					 be closed off from the heating system by closing a steam stop valve, there
					 shall be a check valve in the condensate return line between the boiler and the
					 system.
2. If any part of a heating
					 system can be closed off from the remainder of the system by closing a steam
					 stop valve, there shall be a check valve in the condensate return pipe from
					 that part of the system.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.16 - Feedwater Connections

Current through June 25, 2024
1. Feedwater,
					 make-up water, or water treatment shall be introduced into a boiler through the
					 return piping system or through an independent feedwater connection which does
					 not discharge against parts of the boiler exposed to direct radiant heat from
					 the fire. Feedwater, make-up, or water treatment shall not be introduced
					 through openings or connections provided for inspection or clean, safety valve,
					 safety relief valve, surface blowoff, water column, water gauge glass, pressure
					 gauge or temperature gauge.
2.
					 Feedwater piping shall be provided with a check valve near boiler and a stop
					 valve or cock between the check valve and the boiler or return pipe
					 system.
Miss. Code Ann.
						§
												45-23-9
Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 10 - Boiler and Pressure Vessel Safety › Subpart 76 - Boiler and Pressure Vessel Safety Act and Rules and Regulations › Chapter 3 - Existing Installations › Subchapter 2 - Heating Boilers › Rule 15-10-76-3.2.17 - Return Pump

Current through June 25, 2024
Each boiler equipped with a condensate return pump, where
						practicable, shall be provided with a water level control arranged to
						automatically maintain the water level in the boiler within the range of the
						gauge glass.
Miss. Code Ann.
						§
												45-23-9