depileve easy clean It is absolutely necessary to expand high pressure lancing area in order to ensure the operation safety of steam generator transfer heat tubes in nuclear power plants.Considering the structure at the secondary side of the steam generator, and in compliance with the guidelines of reducing cost and increasing the compatibility, the reverse lancing technology is studied on conventional tubesheet lancing equipment.And the equipment applicable for the entire area between flow distribution baffle and the first tube support plate was developed by way of parameter matching, device design, verification calculation, etc.After full simulation testing, the equipment has been put into service in the nuclear power plant successfully.It is here shown that the above area can be cleaned entirely by taking advantage of the technology and equipment of the reverse lancing developed.
Furthermore, the volume of the sludge removal increases significantly, with all result index meet the requirements.