Apparatus and methods for improved hot water flushing of a water supply system.

A high pressure jetting system includes a recirculating unit connected to an isolated section of a water supply system which remains under system pressure. The recirculating unit includes a filter unit and a pump unit generating a circulating flow of water. A first pig launch and recovery apparatus couples a first hydrant to the recirculating unit and a second pig launch and recovery apparatus couples a second hydrant to the recirculating unit. A camera unit including a camera and drogue chute enters through the first apparatus and travels in a flushing flow direction to the second apparatus. The drogue chute is then removed from the camera. The camera then couples to a jetting unit having a jetting head and hose and re-enters through the second apparatus. The jetting unit emits a plurality of water jets to move in a counter-current flow direction and remove material from the water mains.

A high pressure jetting system for use with a water supply system includes a recirculating unit to connect to an isolated section of the water supply system. The isolated section remains under water supply system pressure. The recirculating unit includes a filter unit and a pump unit capable of generating a circulating flow of water. A first pig launch and recovery apparatus couples a first hydrant to the recirculating unit and a second pig launch and recovery apparatus couples a second hydrant to the recirculating unit. A jetting unit including a jetting head is coupled to a jetting hose. The jetting unit enters the closed circuit through the second pig launch and recovery apparatus and travels within the isolated section. The jetting head emits a plurality of water jets to assist removal of material from an inner surface of the water mains and pipes.

An asset management device according to an exemplary aspect of the present disclosure includes: at least one memory storing a set of instructions; and at least one processor configured to execute the set of instructions to: receive an input of information on a pipe being a diagnostic target as pipe information; set, based on the pipe information that is commonly shared by the pipes being diagnostic targets, an evaluation item for the pipes; calculate a priority level of a response for each of the pipes being diagnostic targets with respect to the evaluation item; and compare, among the pipes being diagnostic targets, calculated priority levels.

A drinking water supply system includes a drinking water line system, a plurality of drinking water withdrawal points connected to the drinking water line system, at least one sensor which is designed to determine measuring values, and a central control device which is designed to receive and evaluate the measuring values determined by the at least one sensor. The system also includes a presence detector designed to determine information about the presence of a person, or an acoustic sensor designed to measure measuring values for the volume. The central control device is designed to control the drinking water supply system as a function of the information about the presence of a person or as a function of the measured values for the volume. A method for controlling such a drinking water supply system and a computer program that causes the method to be carried out are also provided.

Method of purging and subsequently verifying a liquid-carrying conduit includes the steps of: providing a hydrogel comprising additive(s) selected from the group comprising: chloride ions, sulphate ions, nitrate ions fluorescein dye, carmine dye and cation salts; transporting the hydrogel along at least a portion of an offline liquid-carrying conduit to thereby purge the conduit; substantially or completely removing the hydrogel from the offline liquid-carrying conduit; flushing the offline liquid-carrying conduit with a volume of flushing water; and verifying removal of the hydrogel from the offline liquid-carrying conduit by checking the flushed water for detectable traces of the additive. The flushing step is repeated as often as necessary until the additive cannot be detected. The method may be employed to purge different types of liquid-carrying conduits, e.g. conduits for transporting potable water; conduits for transporting sewage; and oil pipelines.

A drinking water supply system with a drinking water line system includes multiple drinking water removal points connected to the drinking water line system, at least one sensor, which is designed to determine measurement values, and a central controller, which is designed to receive and evaluate measurement values determined by the at least one sensor. Multiple sensors are provided which are designed to determine measurement values for one property or for different properties of the water being conducted in the drinking water supply system at different locations in the drinking water supply system, and the central controller is designed to receive and evaluate the measurement values determined by the sensors. One or more of the sensors is designed to determine measurement values for the drinking water quality of the water being conducted in the drinking water supply system. A method for controlling such a supply system is also provided.

A drinking water supply system with a drinking water line system includes multiple drinking water removal points connected to the drinking water line system, at least one sensor, which is designed to determine measurement values, and a central controller, which is designed to receive and evaluate the measurement values determined by the at least one sensor. The central controller is designed to control the control elements depending on the received measurement values. The drinking water line system has a drinking water line section for supplying drinking water to multiple drinking water removal points. A volumetric flow rate sensor is provided in order to measure the volumetric flow rate of the water in the drinking water line section and/or a pressure sensor is provided in order to measure the water pressure in the drinking water line section. The controller is designed to carry out a measure.

The invention relates to a drinking water supply system including a drinking water line system, a plurality of drinking water withdrawal points connected to the drinking water line system, at least one sensor which is designed to determine measuring values, a central control device which is designed to receive and evaluate the measuring values determined by the at least one sensor, a plurality of decentralized control elements which are designed to influence at different locations in the drinking water supply system one or more properties of the water guided in the drinking water supply system, wherein the central control device is designed to control the control elements for influencing the one or more properties of the water guided in the drinking water supply system, and wherein a plurality of control elements are or can be combined to form a virtual group.

The invention relates to a cleaning device, in which said device is supplied with liquid. The device is characterised in that it comprises a mobile chassis supporting a plurality of functional subassemblies necessary for the production of a hot liquid in a condensing gas boiler with sealed combustion chamber. The invention can be used to clean the pipes in an aircraft.