Definitions

PURPOSE: This rule formulates definitions concerning boilers, water heaters, and pressure vessels in Missouri. (1) Act—The Boiler and Pressure Vessel Safety Act which was enacted as sections 650.200–650.295, RSMo. (2) ASME Code—The American Society of Mechanical Engineers International (ASME) Boiler and Pressure Vessel Code, including Code Cases and interpretations as made, approved, and adopted by the Council of the Society and approved and adopted by the board. Copies of the code may be obtained from the ASME at Three Park Ave., New York, NY 10016-5990. (3) Alteration—Any change in the item described on the original manufacturer’s data report which affects the pressure containing capability of the pressure retaining item. Nonphysical changes such as an increase in the maximum allowable working pressure (internal or external), increase in design pressure, or a reduction in minimum temperature of a pressure retaining item. (4) API Code—The edition and addenda of ANSI/API Std-510 as published by the American Petroleum Institute and adopted by the board. (5) Approved—Approved by the Board of Boiler and Pressure Vessel Rules. (6) Board—The Board of Boiler and Pressure Vessel Rules created by the Act and empowered to interpret the Act and to make, alter, amend, and interpret the rules for the safe construction, installation, inspection, alteration, and repair of boilers and pressure vessels. (7) Boiler—A pressurized vessel in which water is heated, steam is generated, steam is superheated, or any combination of these, under pressure or vacuum by the direct application of heat. The term boiler includes fired units for heating or vaporizing liquids other than water where these units are separate from processing systems and complete within themselves. (8) Certificate of competency—A certificate issued to a person who has passed the examination(s) and met the experience requirements prescribed. (9) Certificate inspection—An inspection, the report of which is used by the chief inspector as justification for issuing, withholding, or suspending the Inspection Certificate. (A) Internal inspection—As complete an examination as can reasonably be made of the internal areas, including the wetted surfaces, and external surfaces of a boiler or pressure vessel while it is not in operation. (B) External inspection—An inspection performed on the external surfaces of a boiler or pressure vessel including all fittings and appliances. (10) Chief inspector—The chief boiler and pressure vessel inspector appointed by the director under the provisions of this Act. (11) CSD-1—Standard for Control and Safety Devices for Automatically Fired Boilers published by the American Society for Mechanical Engineers (ASME). (12) Deputy inspector—Any inspector appointed and employed by the director under the provisions of this Act. (13) Director—The state fire marshal or appointed designee. (14) Emergency installation—The unplanned replacement of a boiler, water heater, pool heater, or pressure vessel due to failure. (15) Existing installation—Includes any boiler, water heater, or pressure vessel constructed, installed, placed in operation, or under contract on or before November 12, 1986. (16) Fittings and appliances—Include but not limited to pressure relief devices, low water protection, pressure controls, temperature controls, thermometers, gages, expansion tanks, pipe, pipe fittings, pipe valves, etc., within the scope of the Act and these rules. (17) Hobby boiler—A boiler operated as a personal hobby and not used for commercial gain. (18) Hot water heating boiler—A boiler in which no steam is generated, from which hot water is circulated for heating purposes and then returned to the boiler, and which operates at a pressure not exceeding one hundred sixty (160) pounds per square inch (psi) and/or a temperature of two hundred fifty degrees Fahrenheit (250 °F) at or near the boiler outlet. (19) Hot water supply boiler—A boiler completely filled with water that furnishes hot water to be used externally to itself at pressures not exceeding one hundred sixty (160) psi or at temperatures not exceeding two hundred fifty degrees Fahrenheit (250 °F) at or near the boiler outlet. (20) Inspection certificate—A certificate issued by the chief inspector for the operation of a boiler, water heater, or pressure vessel as required by the Act and these rules. (21) Inspector—The chief inspector, deputy inspector, special inspector, or owner-user inspector authorized to perform certificate inspections in Missouri. (22) Installation site—The physical location where one (1) or more boilers, water heaters, pressure vessels, or a combination thereof are located. Examples of installation sites include but are not limited to a single boiler room in a building, a single process building, a single laboratory building, or a central utility building. (23) Installer—The organization responsible for the installation of a boiler, water heater, or pressure vessel, including any associated control systems and protective equipment. (24) International Mechanical Code—International Code Council, Inc. (25) Fired jacketed steam kettle—A gas-fired or electrically heated kettle with jacket(s), operating at pressure not exceeding fifty (50) psi. (26) Labeled—Equipment or materials to which the label of a nationally recognized testing agency, such as Underwriters Laboratory (UL) or Factory Mutual (FM), has been applied. Application of the label indicates compliance with the agency’s standards. (27) Listed—Equipment or materials which are included on a list published by a nationally recognized testing agency, such as Underwriters Laboratory (UL) or Factory Mutual (FM). Listing indicates compliance with nationally recognized standards. (28) MAWP—Maximum allowable working pressure. (29) National Board (NB)—The National Board of Boiler and Pressure Vessel Inspectors. (30) National Board Commission—The commission issued to an inspector by the National Board of Boiler and Pressure Vessel Inspectors. (31) National Board Inspection Code (NBIC)—The edition and addenda of ANSI/NB-23 currently adopted by the board. (32) New installation—Includes all boilers, water heaters, or pressure vessels constructed, installed, placed in operation, or under contract on or after November 12, 1986. (33) Nonstandard boiler, water heater, or pressure vessel—A boiler, water heater, or pressure vessel that does not bear the ASME stamp. (34) Object—A boiler, water heater, or pressure vessel. (35) Owner or user—Any person, firm, or corporation legally responsible for the safe installation, operation, and maintenance of any boiler, water heater, or pressure vessel within the state of Missouri. (36) Plans—Drawings, specifications, schematics, etc., acceptable to the chief inspector and suitable for determining if the installation meets the requirements of the statute and these rules. (37) Pool heater—An appliance designed for heating nonpotable water stored at atmospheric pressure, such as water in swimming pools, spas, hot tubs, and similar applications. (38) Power boiler—A boiler in which steam or other vapor is generated at a pressure of more than fifteen (15) psi for use external to itself or a water (or other liquid) boiler intended for operation at pressures in excess of one hundred sixty (160) psi and/or temperatures in excess of two hundred fifty degrees Fahrenheit (250 °F). (39) Pressure vessel—A vessel in which the pressure is obtained from an external source or by the application of heat from an indirect source, other than those vessels defined as boilers. (40) Reinstalled boiler, water heater, or pressure vessel—A boiler, water heater, or pressure vessel removed from its original setting and reinstalled at the same location or at a new location without change of ownership. (41) Repair—The process of restoring a component or system to a safe and satisfactory condition such that the existing design conditions are met. (42) Replacement—The removal of an existing boiler, water heater, or pressure vessel and installation of a new secondhand or re-installed boiler, water heater, or pressure vessel. (43) Second-hand boiler, water heater, or pressure vessel—A boiler, water heater, or pressure vessel which has changed both location and ownership. (44) Special inspector—Any inspector commissioned by the chief inspector who is employed by an insurance company authorized to provide boiler and pressure vessel insurance in this state or an inspector who is employed by a company that maintains an inspection department whose organization and inspection procedures meet the requirements of the National Board for an Owner-User Inspection Agency and are acceptable to the chief inspector. (45) Standard boiler, water heater, or pressure vessel—A boiler, water heater, or pressure vessel that bears the ASME stamp. (46) State special—A boiler, water heater, or pressure vessel of special construction, or which is designed or constructed to other than the ASME Code and is not inconsistent with the spirit and safety objectives of the ASME Code. (47) Steam heating boiler—A steam or vapor boiler operating at pressures not exceeding fifteen (15) psi. (48) Waste heat boiler—A boiler that has, as its principal source of thermal energy, a hot gas stream from the exhaust of a gas turbine or internal combustion engine. (49) Water heater—A fired, pressurized vessel in which water is heated by electricity, or by the combustion of solid, liquid, or gaseous fuels and withdrawn for use external to the heater at pressures not exceeding one hundred sixty (160) psi and temperatures not exceeding two hundred ten degrees Fahrenheit (210 °F). Water heaters include service water heaters, domestic water heaters, potable water heaters, and car wash hot water supply boilers. The term “water heater” does not include vessels used solely for closed loop hot water heating service. (50) Variance—An exception to the Act or these rules authorized by the board for the installation, inspection, repair, or alteration of a boiler, water heater, or pressure vessel. AUTHORITY: section 650.215, RSMo 2000.* Original rule filed May 12, 1986, effective Oct. 27, 1986. Amended: Filed Oct. 3, 1995, effective April 30, 1996. Rescinded: Filed March 10, 2003, effective Aug. 30, 2003. Readopted: Filed Sept. 25, 2002, effective May 30, 2003. Amended: Filed Jan. 12, 2006, effective June 30, 2006. Amended: Filed March 23, 2006, effective Dec. 30, 2006. Amended: Filed June 30, 2009, effective Feb. 28, 2010. *Original authority: 650.215, RSMo 1984, amended 1990, 1993, 1995.