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Condensate pump leaking steam
Hi all, fairly new to steam systems and looking for some insight for a building I am working on.
A bit of context: Commercial office building - 22 stories. Single steam boiler operating at a cut-out pressure of 1.5psi, serving a two-pipe perimeter cast-iron radiator system. Boiler is controlled via a heat-timer. There are pressuretrols installed, but it looks like the modulating pressuretrol controls were overridden a long time ago as its settings don't align with actual operation. Current chief is not sure when/what may be been done, but the boiler operates fairly well so no questions asked to this point. No major issues with heating up the building, if anything some spaces heat up too much or too quickly during low-load days.
The building has complained that they need to manually release steam at the two steam traps found in the attached photos because the low steam pressure does not force the F&Ts open and the system occasionally gets over-pressurized (this didn't make much sense to me). Additionally, I noticed that the one of the condensate pumps was leaking steam (picture attached).
My main questions are: can someone explain to me the condensate piping/steam trap configuration pictured? Also, any suggestions as to what can be causing the pump to leak steam?