Kansas Administrative Regulations › Agency 49 - DEPARTMENT OF LABOR › Article 50 - GENERAL REQUIREMENTS FOR ALL BOILERS › Section 49-50-4 - Cross-connection control

Current through Register Vol. 43, No. 28, July 11, 2024
(a) A person
					shall not install any water-operated equipment or mechanism, or use any
					water-treating chemical or substance, if it is found that this equipment,
					mechanism, chemical, or substance may cause pollution of the domestic water
					supply. The equipment or mechanism may be permitted only when equipped with an
					approved backflow prevention device.
(b) Each backflow prevention device installed
					in a potable water supply system shall be maintained in good working condition
					by the person or persons having control of the device. The devices may be
					inspected by authorized inspectors and, if found to be defective or
					inoperative, shall be repaired or replaced as directed by the inspector. A
					device shall not be removed from use or relocated or another device substituted
					without formal notification to the office of the responsible authorized
					inspection agency.
(c) Potable
					water piping shall not be installed or maintained within any piping or device
					conveying sewage, wastes, or other materials hazardous to health and safety.
(d) Each hot water heating and
					steam boiler connection shall be protected by an approved backflow prevention
					device as set forth in subsection (e) of this regulation and shall be tested
					and inspected by a qualified inspector.
(e) Nonpotable water piping. If it is
					impractical to correct individual cross-connections on the domestic water line,
					the line supplying these outlets shall be considered a nonpotable water line.
					Drinking or domestic water outlets shall not be connected to the nonpotable
					water line. Backflow or back-siphonage from the nonpotable water line into the
					domestic water line shall be prevented by the installation of a gravity tank or
					by a tank having a pump designated for nonpotable water. The domestic water
					inlets to the nonpotable water tank shall have an approved air gap as specified
					within the ASME code and the international plumbing code. Whenever it is
					impractical to install this tank, an approved pressure-type backflow or
					back-siphonage prevention device shall be installed as follows:
(1) If reverse flow is possible only as a
					result of gravity or a vacuum within the line, an approved pressure-type vacuum
					breaker unit or other approved backflow prevention device shall be installed in
					the supply line.
(2) Each
					pressure-type vacuum breaker unit shall be installed at a height of at least 12
					inches (.3m) above the highest tank, equipment, or other point at which the
					nonpotable water is used. Other approved backflow prevention devices shall be
					installed in a manner satisfactory to the responsible authorized inspection
					agency, but in no case less than 12 inches (.3m) above the surrounding ground
					or floor.
(3) If backflow can
					occur, creating a higher pressure in the nonpotable water line, an approved
					backflow prevention device shall be installed in the supply line. The backflow
					prevention device shall be installed at least 12 inches (.3m) above the
					surrounding ground or floor, or higher than five feet above the floor or
					surrounding ground, unless a work platform and ladder are provided.