【Mechanical Area】Pumps to be Shut Down for Winter Shutdown【007】
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This post was last edited by Xiao Jie on 2016-3-13 at 11:51. Equipment name: Condensate pump; Location: Synthesis unit; Equipment status: Shut down. Brief description of the anti-freezing measures taken for the equipment and their effectiveness: Since this equipment is hardly used on site, as per the management’s instructions, the pipes associated with the shut-down pump were emptied and then the pump itself was removed to the distillation building, where heating is available. Device image:
This post was last edited by ztj1118 on 2015-12-28 at 14:10. The system shows an ERROR; the image cannot be uploaded. Edit later.
Too much talk only leads to tears – where are those fancy pictures we agreed on? :lol
In our case, the small pump was removed, while the large pump had its steam pipes wrapped in insulation material, along with rock wool and asbestos cloth used for insulation as well~~~~~
I have only seen insulation on chilled water units. . . I don’t know if insulation is needed for the pump. Can temperature really freeze iron apart? ? ?
To insulate the pump when it is shut down, the water must first be drained completely.
It’s not the pump that is sensitive to cold; the pump itself will not crack from freezing. What happens is that when the fluid inside the pump – especially water – freezes, the change in volume between ice and water causes the pump body to crack. Therefore, pumps that operate continuously 24 hours a day generally do not require insulation or drainage of condensate. However, if a standby pump is not insulated, it is necessary to drain all the fluid from within it.
The most common method to prevent freezing in standby pumps is to slightly open the outlet valve of the standby pump; if there is a check valve, a bypass line is usually provided, which allows the pump to circulate fluid on its own and thus prevents freezing. For pumps that are not used frequently, they should be drained