&&The goods are multiple nozzle spray desuperheaters. The unit is a nozzle tube assembly made from stainless steel alloy. The unit consists of a cage-guided plug situated within a nozzle tube just behind the discharge nozzles. The plug is controlled by an actuator under the signals of a temperature controller.&&&&The function of the unit is to cool process steam by passing a controlled amount of cooling water through the nozzle tube assembly when the plug is extended. The resulting soft, misty spray acts as a cooling medium in the superheated steam flow. The nozzle tube assembly fits up into the bore of the mounting flange and is locked in place with a threaded ring. The unit is used in conjunction with two Heat Recovery Steam Generator (HRSG) cogeneration units.&&

Classificazione SA

8404.10.00.90

Motivazione CBSA

&&Heading 84.04 provides for “Auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economizers, super-heaters, soot removers, as recoverers); condensers for steam or other vapour power units”. As per the Explanatory Notes (ENs) to heading 84.04, Part (A) Auxiliary plant for use with boilers of heading 84.02 or 84.03, these include: (4) De-super-heaters. These are used to prevent the development of too high a temperature in the super-heaters. Normally, they are placed between two sections of the super-heater, and generally consist of a cast iron body into which the steam is passed and cooled by a flow of water.

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