SPS 341.02(1)(a)(a) Except as provided in
par. (b), this chapter applies to boilers and piping components associated with boilers, pressure vessels, power piping, and solid-fuel-fired water-heating appliances in use at places of employment, in public buildings and at one- or 2-family dwellings.
SPS 341.02 Note
Note: The Wisconsin Commercial Building Code (WCBC), chapters SPS 361 to 366, likewise applies this chapter to the installation, alteration and repair of boilers and pressure vessels in public buildings and places of employment. The WCBC may have other requirements relating to the installation, alteration or repair of a boiler or pressure vessel, such as requirements relating to enclosures, location, safety controls, combustion air, and venting. The International Mechanical Code® (IMC) as adopted by reference under the WCBC contains requirements relating to hydronic piping.
SPS 341.02 Note
Note: Wisconsin Administrative Codes are available at
https://docs.legis.wisconsin.gov/code/prefaces/toc. Official copies may be obtained for a nominal fee at the Department of Administration, Document Sales and Distribution, 4622 University Avenue, Madison, Wisconsin 53705-2156, telephone 800-DOC-SALES or Contact Through Relay, or at
docsales@doa.state.wi.us.
SPS 341.02(1)(b)2.
2. Only subch.
VI applies to a pressure vessel in a mechanical refrigeration system.
SPS 341.02 Note
Note: Chapter
SPS 345 contains additional requirements for pressure vessels in mechanical refrigeration systems.
SPS 341.02 Note
Note: The gas systems addressed in chapter SPS 340 include pressurized vessels and piping for gases that are used for fueling purposes, such as for heating appliances or engines.
SPS 341.02(2)
(2) Other vessels. The provisions of this chapter shall apply to vessels used for the storage and transportation of flammable liquids, liquefied petroleum gas, liquefied natural gas, compressed natural gas, anhydrous ammonia and refrigerants, unless these vessels are covered by other Wisconsin administrative codes or federal codes.
SPS 341.02 Note
Note: See chapters SPS 310 and 314 for related Departmental requirements for storage and transportation of flammable, combustible and hazardous liquids. See chapter SPS 343 for related Departmental requirements for anhydrous ammonia.
SPS 341.02 History
History: Cr.
Register, February, 1988, No. 386, eff. 3-1-88; am.
Register, February, 2000, No. 530, eff. 3-1-00;
CR 08-028: r. and recr. (1)
Register November 2008 No. 635, eff. 12-1-08;
CR 10-011: renum. (1) (b) to be (1) (b) 1., cr. (1) (b) 2.
Register August 2010 No. 656, eff. 9-1-10;
CR 11-047: am. (1) (a), (b) 1., cr. (1) (b) 3.
Register May 2012 No. 677, eff. 6-1-12.
SPS 341.03(1)(a)(a) The operation, testing, maintenance and inspection requirements of this chapter apply to all boilers, pressure vessels, power piping, solid-fuel-fired water-heating appliances, and their components, that exist on or after June 1, 2012.
SPS 341.03(1)(b)
(b) A design, construction or installation rule of this chapter, including the applied criteria from the standards adopted in
s. SPS 341.10, does not apply retroactively to boilers, pressure vessels, power piping, solid-fuel-fired water-heating appliances, and their components, that were installed prior to the effective date of the rule unless specifically stated in the rule or standard.
SPS 341.03(1)(c)
(c) The design, construction and installation requirements of this chapter apply to any alterations, repairs, and replacement parts or components for all boilers, pressure vessels, power piping, solid-fuel-fired water-heating appliances, and their components, that exist on or after June 1, 2012.
SPS 341.03 Note
Note: A proposed alteration for an existing boiler, pressure vessel or power piping may necessitate modifying other components in order to make the proposed alteration comply with this chapter – and some alterations may necessitate modifying other features of a building, such as an automatic fire sprinkler system, that must comply with requirements in chapters SPS 361 to 366, the Wisconsin Commercial Building Code.
SPS 341.03(2)(a)(a) Where any department-written rule in this chapter differs from a requirement within a standard referenced in this chapter, the department-written rule shall govern, except as provided in
sub. (3).
SPS 341.03(2)(b)
(b) Where a provision of this chapter prescribes a general requirement and another provision of this chapter prescribes a specific or more detailed requirement regarding the same subject, the specific or more detailed requirement shall govern, except as provided in
par. (a).
SPS 341.03(2)(c)
(c) Where different sections of this chapter specify conflicting requirements, the most restrictive requirement, as determined by the department, shall govern, except as provided in
pars. (a) and
(b).
SPS 341.03(3)
(3) Exclusions. The department-written rules in this chapter do not nullify any exclusions specified in the standards adopted under
s. SPS 341.10.
SPS 341.03(4)
(4) Interpretations. Under s.
101.02 (1), Stats., the department reserves the right to interpret the requirements in this chapter and in all adopted codes and standards.
SPS 341.03 Note
Note: Section
101.02 (1) of the Statutes reads as follows: “The department shall adopt reasonable and proper rules and regulations relative to the exercise of its powers and authorities and proper rules to govern its proceedings and to regulate the mode and manner of all investigations and hearings."
SPS 341.03(5)
(5) Local requirements. This chapter does not limit the power of cities, villages and towns to make or enforce additional or more stringent requirements, provided the requirements do not conflict with this chapter, any other rule of the department, or law.
SPS 341.03 History
History: CR 08-028: cr.
Register November 2008 No. 635, eff. 12-1-08; correction in (3) made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672;
CR 11-047: r. and recr.
Register May 2012 No. 677, eff. 6-1-12.
SPS 341.04
SPS 341.04
Definitions. In this chapter:
SPS 341.04(1)(a)(a) “Alteration," for a boiler or pressure vessel, has the meaning given in NBIC part 3 section 9.1.
SPS 341.04(1)(b)
(b) “Alteration," for power piping or a solid-fuel-fired water-heating appliance, means a change that involves an extension or addition to, or involves the arrangement, type or purpose of, an existing installation or component.
SPS 341.04 Note
Note: The Department will ordinarily accept items approved by a nationally recognized testing laboratory.
SPS 341.04(3)
(3) “ASME code" means the boiler and pressure vessel code published by the American society of mechanical engineers.
SPS 341.04(4)
(4) “Authorized agent" means any of the following or their authorized representatives:
SPS 341.04(4)(a)
(a) A certified inspector who is referred to as enforcing this chapter, in a written contract between an inspection provider and the department.
SPS 341.04(4)(b)
(b) A first class city that has accepted the responsibility to administer and enforce this chapter.
SPS 341.04 Note
Note: As of June 1, 2012, only the City of Milwaukee had accepted the responsibility to administer and enforce this chapter.
SPS 341.04(5)
(5) “Boiler" means a vessel intended for use in heating water or other fluids or for generating steam or other vapors by the application of heat.
SPS 341.04(6)
(6) “Boiler external piping" means piping that is within the scope of section I of the ASME code and is required by section I to have ASME code symbol stamping.
SPS 341.04(7)
(7) “Certified inspector" means a person who holds a valid credential issued by the department
under
ch. SPS 305 as a certified boiler-pressure vessel inspector or a certified in-service field inspector.
SPS 341.04(8)
(8) “Condemned" means a boiler or pressure vessel declared to be unsafe and that has an applied stamping designating its condemnation.
SPS 341.04(9)
(9) “Department" means the department of safety and professional services.
SPS 341.04 Note
Note: Under s.
101.61 (1) Stats., “dwelling" means any building that contains one or 2 dwelling units. “Dwelling unit" means a structure or that part of a structure which is used or intended to be used as a home, residence or sleeping place by one person or by 2 or more persons maintaining a common household, to the exclusion of all others.
SPS 341.04(11)
(11) “External inspection" means an inspection made while the boiler or pressure vessel is in operation.
SPS 341.04(12)
(12) “First class city" means a city established with that class under s.
62.05, Stats.
SPS 341.04 Note
Note: As of June 1, 2012, only the City of Milwaukee had become a first class city.
SPS 341.04(13)
(13) “High temperature water boiler" means a boiler completely filled with water intended for operation at pressures in excess of 160 psig or temperatures in excess of 250
°F.
SPS 341.04(14)
(14) “Historical boiler" means a steam boiler that is typically of riveted construction and which is preserved, restored or maintained for hobby or demonstration use.
SPS 341.04 Note
Note: Steam locomotives, traction engines, hobby boilers and steam cars are examples of historical boilers.
SPS 341.04(15)
(15) “Hot-water heating boiler" means a boiler in which no steam is generated, from which hot water is circulated for heating or process purposes and then returned to the boiler, and which operates at a pressure not exceeding 160 psig or a temperature of 250
°F at or near the boiler outlet.
SPS 341.04(16)
(16) “Hot-water storage tank" means a tank used to store water that is heated indirectly by a circulating water heater, by steam or hot water circulating through coils, or by other heat exchange methods internal or external to the tank.
SPS 341.04(17)
(17) “Hot-water supply boiler" means a boiler completely filled with water that furnishes hot water to be used externally to itself at pressures not exceeding 160 psig or at temperatures not exceeding 250
°F at or near the boiler outlet.
SPS 341.04(18)
(18) “Internal inspection" means an inspection made when the boiler or pressure vessel is shut down and handholes and manholes or other inspection openings are opened or removed for inspection of the interior as required by the inspector.
SPS 341.04(19)
(19) “Low-pressure steam boiler" means a boiler on which the safety valves are set at pressures not exceeding 15 psig.
SPS 341.04(20)
(20) “Maximum allowable working pressure" means the maximum gage pressure permissible at the top of a completed vessel in its operating position for a designated temperature.
SPS 341.04(21)
(21) “Miniature boiler" means a power boiler or high temperature water boiler that does not exceed any of the following limits:
SPS 341.04(21)(b)
(b) Heating surface of 20 square feet, except for electric boilers.
SPS 341.04(21)(c)
(c) Gross volume of 5 cubic feet, exclusive of casing and insulation.
SPS 341.04(22)
(22) “National Board" means the National Board of Boiler and Pressure Vessel Inspectors.
SPS 341.04(23)
(23) “NRC" means the United States nuclear regulatory commission.
SPS 341.04(24)
(24) “Owner or user" means any person, firm or corporation legally responsible for the safe operation of a boiler or pressure vessel, power piping or a solid-fuel-fired water-heating appliance.
SPS 341.04 Note
Note: Under s.
101.01 (11), Stats., “place of employment" includes every place, whether indoors or out or underground and the premises appurtenant thereto where either temporarily or permanently and any industry, trade or business is carried on, or where any process or operation, directly or indirectly related to any industry, trade or business, is carried on, and where any person is, directly or indirectly, employed by another for direct or indirect gain or profit, but does not include any place where persons are employed in private domestic service which does not involve the use of mechanical power or in farming. “Farming" includes those activities specified in s.
102.04 (3), and also includes the transportation of farm products, supplies or equipment directly to the farm by the operator of said farm or employees for the use thereon, if such activities are directly or indirectly for the purpose of producing commodities for market, or as an accessory to such production. When used with relation to building codes “place of employment" does not include an adult family home, as defined in s.
50.01 (1), or, except for the purposes of s.
101.11, a previously constructed building used as a community-based residential facility, as defined in s.
50.01 (1g), which serves 20 or fewer residents who are not related to the operator or administrator.
SPS 341.04(26)
(26) “Portable boiler" means an internally fired boiler primarily intended for temporary location and whose construction and usage is of a movable nature.
SPS 341.04(27)
(27) “Power boiler" means a boiler in which steam or other vapor is generated at a pressure of more than 15 psig.
SPS 341.04(28)
(28) “Power piping" means any steam piping system beyond the scope of section I of the ASME code and having a maximum allowable working pressure in excess of 15 psig, any hot water piping system beyond the scope of section I of the ASME code and subject to temperatures in excess of 250
°F, or any piping system using an organic or synthetic fluid as a heat-transfer media and subject to temperatures in excess of 250
°F.
SPS 341.04(29)
(29) “Pressure vessel" means a container for the containment of pressure, either internal or external. This pressure may be obtained from an external source or by the application of heat from a direct or indirect source, or any combination thereof.
SPS 341.04 Note
Note: Under s.
101.01 (12), Stats., “public building" means any structure, including exterior parts of such building, such as a porch, exterior platform or steps providing means of ingress or egress, used in whole or in part as a place of resort, assemblage, lodging, trade, traffic, occupancy, or use by the public or by 3 or more tenants. When used in relation to building codes, “public building" does not include a previously constructed building used as a community-based residential facility as defined in s.
50.01 (1g) which serves 20 or fewer residents who are not related to the operator or administrator or an adult family home, as defined in s.
50.01 (1).
SPS 341.04(31)
(31) “Relief valve" means a pressure-actuated valve which is normally held closed by a spring or other means and which is designed to automatically open enough when needed to prevent internal pressure from exceeding a predetermined level.
SPS 341.04 Note
Note: A relief valve is used primarily for liquid service.
SPS 341.04(32)
(32) “Repair" means work and materials necessary to restore a boiler, pressure vessel, power piping or solid-fuel-fired water-heating appliance to a safe operating condition.
SPS 341.04(33)
(33) “Rupture disk" means a nonmechanical overpressure relief device that releases pressure when its preestablished rating is attained.
SPS 341.04(34)
(34) “Safety relief valve" means an automatic pressure-actuated relieving device suitable for use either as a safety valve or relief valve, depending upon application.
SPS 341.04(35)
(35) “Safety valve" means an automatic pressure relieving device actuated by the static pressure upstream of the valve and characterized by full-opening pop action.
SPS 341.04 Note
Note: A safety valve is used for gas or vapor service.
SPS 341.04(36)
(36) “Secondhand vessel" means a boiler or pressure vessel that has changed location subsequent to the original installation.
SPS 341.04(37)
(37) “Solid-fuel-fired water-heating appliance" means atmospherically vented equipment used to heat water by burning solid fuels, for the purpose of providing space or process heat.
SPS 341.04(39)
(39) “Water heater" means a closed vessel in which water is heated by the combustion of fuels, electricity or other energy source, and withdrawn for use external to the system at pressures not exceeding 160 psig, including the apparatus by which heat is generated and all controls and devices necessary to prevent water temperatures from exceeding 210
°F.
SPS 341.04(40)
(40) “Welding" means the melting together of filler metal and base metal, or of base metal only, that results in coalescence.
SPS 341.04 Note
Note: For further explanation of definitions, see the ASME code section VIII, scope and appendix 3.
SPS 341.04 History
History: Cr.
Register, February, 1988, No. 386, eff. 3-1-88; am. (37),
Register, February, 1990, No. 410, eff. 3-1-90; am. (29),
Register, May, 1994, No. 461, eff. 6-1-94; r. (4), (17), (23), (25), r. and recr. (7),
Register, October, 1996, No. 490, eff. 11-1-96; am. (intro.) and (29),
Register, February, 2000, No. 530, eff. 3-1-00;
CR 05-025: cr. (13m)
Register October 2005 No. 598, eff. 11-1-05;
CR 08-028: renum. (10) to (22), (26), and (32) to (38) to be (11) to (23), (25), (33) to (38) and (40) and am. (16), cr. (10), (26), (32) and (39)
Register November 2008 No. 635, eff. 12-1-08; correction in (7), (9) made under s.
13.92 (4) (b) 6.,
7., Stats.,
Register December 2011 No. 672;
CR 11-047: am. (intro.), renum. (1) to be (1) (a) and am., cr. (1) (b), (4), am. (6) to (8), (10), r. (11), renum. (12) to be (11), cr. (12), renum. (13), (14) to (18) to be (40), (13) to (17) and am. (40), r. (19), renum. (20) to (24) to be (18) to (22) and am. (19), (21), (22), cr. (23), renum. (25) to (29) to be (24) to (28) and am. (24), (28), r. (30), renum. (31) to (39) to be (29) to (37) and am. (29), (31), (32), (37), cr. (38), renum. (40) to be (39)
Register May 2012 No. 677, eff. 6-1-12.
