Md. Code Regs. - Definitions

A. In this chapter, the following terms have the meanings indicated.
B. Terms Defined.
(1) Aerosol propellant means a compressed gas that serves to dispense the contents of an aerosol container when the pressure is released.
(2) Air conditioning equipment means chillers, both centrifugal chillers and positive displacement chillers, intended for comfort cooling of occupied spaces.
(3) Bunstock or bun stock means a large solid block-like structure formed during the production of polyurethane, polyisocyanurate, phenolic, or polystyrene insulation.
(4) Capital cost means an expense incurred in the production of goods or in rendering services, including the cost of engineering, purchase, and installation of components or systems, and instrumentation, and contractor and construction fees.
(5) Centrifugal Chiller.
(a) Centrifugal chiller means air conditioning equipment that utilizes a centrifugal compressor in a vapor-compression refrigeration cycle typically used for commercial comfort air conditioning.
(b) Centrifugal chiller does not include cooling for industrial process cooling and refrigeration.
(6) Cold storage warehouse means a cooled facility designed to store meat, produce, dairy products, and other products that are delivered to other locations for sale to the ultimate consumer.
(7) Component means:
(a) A part of a refrigeration system, including condensing units, compressors, condensers, evaporators, and receivers; and
(b) All of a refrigeration system's connections and subassemblies, without which the refrigeration system will not properly function or will be subject to failures.
(8) Cumulatively replaced means the addition of or change in multiple components within a 3-year period.
(9) Effective date or effective date of prohibition means the date of manufacture after which the prohibitions provided in Regulation .03B of this chapter go into effect.
(10) ''End-use'' means processes or classes of specific applications within industry sectors, including those listed in Regulation .03B of this chapter.
(11) Flexible polyurethane means a non-rigid synthetic foam containing polymers created by the reaction of isocyanate and polyol, including that used in furniture, bedding, and chair cushions.
(12) Foam means a product with a cellular structure formed via a foaming process in a variety of materials that undergo hardening via a chemical reaction or phase transition.
(13) Foam blowing agent means a substance used to produce foam.
(14) Household Refrigerators and Freezers.
(a) Household refrigerators and freezers means refrigerators, refrigerator-freezers, freezers, and miscellaneous household refrigeration appliances intended for residential use.
(b) Household refrigerators and freezers does not include household refrigerators and freezers - compact or household refrigerators and freezers - built-in.
(15) Household Refrigerators and Freezers - Built-In.
(a) Household refrigerators and freezers - built-in means any refrigerator, refrigerator-freezer or freezer intended for residential use with 7.75 cubic feet or greater total volume and 24 inches or less depth not including doors, handles, and custom front panels.
(b) Household refrigerators and freezers - built-in contain sides which are not finished and not designed to be visible after installation.
(c) Household refrigerators and freezers - built-in are designed, intended, and marketed exclusively to be:
(i) Installed totally encased by cabinetry or panels that are attached during installation;
(ii) Securely fastened to adjacent cabinetry, walls, or floor; and
(iii) Equipped with an integral factory-finished face or accept a custom front panel.
(16) Household refrigerators and freezers - compact means any refrigerator, refrigerator-freezer or freezer intended for residential use with a total refrigerated volume of less than 7.75 cubic feet (220 liters).
(17) "Hydrofluorocarbons (HFCs)" means a class of greenhouse gases that are saturated organic compounds containing hydrogen, fluorine, and carbon.
(18) Integral skin polyurethane means a synthetic self-skinning foam containing polyurethane polymers formed by the reaction of an isocyanate and a polyol, such as that used in car steering wheels and dashboards.
(19) "Manufacturer" means any person, firm, association, partnership, corporation, governmental entity, organization, or joint venture that produces any product that contains or uses hydrofluorocarbons or is an importer or domestic distributor of such a product.
(20)Medical dose inhaler, Metered dose inhaler or MDI means a device that:
(a) Delivers a measured amount of medication as a mist that a patient can inhale, typically used for bronchodilation to treat symptoms of asthma, chronic obstructive pulmonary disease (COPD), chronic bronchitis, emphysema, and other respiratory illnesses; and
(b) Consists of a pressurized canister of medication in a case with a mouthpiece.
(21) Miscellaneous residential refrigeration appliance means a residential refrigeration appliance smaller than a refrigerator, refrigerator-freezer, or freezer, including coolers, cooler compartments, and combination cooler refrigeration or cooler freezer products.
(22) Motor-bearing means refrigeration equipment containing motorized parts, including compressors, condensers, and evaporators.
(23) New means products or equipment:
(a) That are manufactured after the effective date of this chapter;
(b) First installed for an intended purpose with new or used components after the effective date of this chapter;
(c) Expanded after the effective date of this chapter, to handle an expanded cooling load by the addition of components in which the capacity of the system is increased, including refrigerant lines, evaporators, compressors, and condensers; or
(d) Replaced or cumulatively replaced after the effective date of this chapter such that the capital cost of replacing or cumulatively replacing components after the effective date of this chapter exceeds 50 percent of the capital cost of replacing the whole system.
(24) Person means any individual, firm, association, organization, manufacturer, distributor, partnership, business trust, corporation, limited liability company, company, state, or local governmental agency or public district.
(25) Phenolic insulation board means phenolic insulation including that used for roofing and wall insulation.
(26) Polyolefin means foam sheets and tubes made of polyolefin.
(27) Polystyrene extruded boardstock and billet (XPS) means a foam formed from predominantly styrene monomer and produced on extruding machines in the form of continuous foam slabs which can be cut and shaped into panels used for roofing, walls, flooring, and pipes.
(28) Polystyrene extruded sheet means polystyrene foam, including that used for packaging and made into food-service items, including hinged polystyrene containers (for "take-out" from restaurants), food trays (meat and poultry), plates, bowls, and retail egg containers.
(29) Positive Displacement Chiller.
(a) Positive displacement chiller means vapor compression cycle chillers that use positive displacement compressors, typically used for commercial comfort air conditioning.
(b) Positive displacement chiller does not include cooling for industrial process cooling and refrigeration.
(30) Refrigerant or refrigerant gas means any substance, including blends and mixtures, which is used for heat transfer purposes.
(31) Refrigerated Food Processing and Dispensing Equipment.
(a) Refrigerated food processing and dispensing equipment means retail food refrigeration equipment that is designed to process food and beverages dispensed via a nozzle that are intended for immediate or near-immediate consumption, including chilled and frozen beverages, ice cream, and whipped cream.
(b) Refrigerated food processing and dispensing equipment does not include water coolers or units designed solely to cool and dispense water.
(32) Refrigeration equipment means any stationary device that is designed to contain and use refrigerant gas, including commercial refrigeration equipment, household refrigeration equipment, and cold storage warehouses.
(33) Remote condensing units means retail refrigeration equipment or units that:
(a) Have a central condensing portion, and other parts of the system, located outside the space or area cooled by an evaporator;
(b) May consist of compressor(s), condenser(s), and receiver(s) assembled into a single unit, which may be located external to the sales area; and
(c) Are commonly installed in convenience stores, specialty shops (for example, bakeries, butcher shops), supermarkets, restaurants, and other locations where food is stored, served, or sold.
(34) Residential Use.
(a) Residential use means use by a private individual of a substance, or a product containing the substance, in or around a permanent or temporary household, during recreation, or for any personal use or enjoyment.
(b) Residential use does not include use within a household for commercial or medical application, or in automobiles, watercraft, or aircraft.
(35) Retail food refrigeration or commercial refrigeration means equipment designed to store and display chilled or frozen goods for commercial sale including stand-alone units, refrigerated food processing and dispensing equipment, remote condensing units, supermarket systems, and vending machines.
(36) Retrofit.
(a) Retrofit means to convert an appliance from one refrigerant to another refrigerant.
(b) Retrofit includes the conversion of the appliance to achieve system compatibility with the new refrigerant and may include changes in lubricants, gaskets, filters, driers, valves, o-rings, or appliance components.
(37) Rigid polyurethane and polyisocyanurate laminated boardstock means laminated board insulation made with polyurethane or polyisocyanurate foam, including that used for roofing and wall insulation.
(38) Rigid polyurethane appliance foam means polyurethane insulation foam in household appliances.
(39) Rigid polyurethane commercial refrigeration and sandwich panels means polyurethane insulation for use in walls and doors, including that used for commercial refrigeration equipment and garage doors.
(40) Rigid polyurethane high-pressure two-component spray foam means a foam product that:
(a) Is pressurized 800 - 1600 pounds per square inch (psi) during manufacture;
(b) Is sold in pressurized containers as two parts (that is, Aside and B-side);
(c) Is blown and applied in situ using high-pressure pumps to propel the foam components; and
(d) May use liquid blowing agents without an additional propellant.
(41) Rigid polyurethane low-pressure two-component spray foam means a foam product that:
(a) Is pressurized to less than 250 psi during manufacture;
(b) Is sold in pressurized containers as two parts (that is, Aside and B-side); and
(c) Is typically applied in situ relying upon a gaseous foam blowing agent that also serves as a propellant so pumps typically are not needed.
(42) Rigid polyurethane marine flotation foam means buoyancy or flotation foam used in boat and ship manufacturing for both structural and flotation purposes.
(43) Rigid polyurethane one-component foam sealants means a foam packaged in aerosol cans that is applied in situ using a gaseous foam blowing agent that is also the propellant for the aerosol formulation.
(44) Rigid polyurethane slabstock and other means a rigid closed-cell foam containing urethane polymers produced by the reaction of an isocyanate and a polymer and formed into slabstock insulation for panels and fabricated shapes for pipes and vessels.
(45) Stand-alone low-temperature unit means a stand-alone unit that maintains food or beverages at temperatures at or below 32°F (0°C).
(46) Stand-alone medium-temperature unit means a stand-alone unit that maintains food or beverages at temperatures above 32°F (0°C).
(47) Stand-alone unit means retail refrigerators, freezers, and reach-in coolers (either open or with doors) where all refrigeration components are integrated and, for the smallest types, the refrigeration circuit is entirely brazed or welded, and all are fully charged with refrigerant at the factory and typically requires only an electricity supply to begin operation.
(48) Substance means any chemical intended for use in the end-uses listed in Regulation .03B of this chapter.
(49) Supermarket systems means multiplex or centralized retail food refrigeration equipment systems designed to cool or refrigerate, which typically operate with racks of compressors installed in a machinery room and which includes both direct and indirect systems.
(50) Use.
(a) Use means any utilization of a compound or any substance, including utilization in a manufacturing process or product in the State, consumption by the end-user in the State, or in intermediate applications in the State, such as formulation or packaging for other subsequent applications.
(b) Use includes manufacturing for the purpose of residential use.
(c) Use does not include residential use.
(51) Vending machines means self-contained commercial food refrigeration equipment that dispense goods that must be kept hot, cold or frozen.


Md. Code Regs.
Regulation .02 repealed effective 45:3 Md. R. 158, eff. 2/12/2018; adopted effective 47:22 Md. R. 936, eff. 11/2/2020

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