Is there a standard on how many drips you can have for pump packing?
As far as I know there is no requirement in NFPA 20 or NFPA 25 regarding how many drips are allowed for pump packing. That information must be consulted with the fire pump manufacturer.
I know there is for fire apparatus wasn't sure about building pumps.
I think the closest thing that would meet would you are looking for would fall under NFPA 25, 8.2.2 - visual observations of the fire pump to be performed weekly. Reference table A.8.2.2 in the appendix item #2 - Check packing adjustment - approximatley 1 drip per second to keep packing lubricated.
I would consider this as a rule of thumb though. Sometimes they have to drip a little faster than that to keep from buring up the packings. There are a lot of factors that can affect keeping the packings lubricated including water quality, if the building owner does their weekly/monthly pump runs, age of packings, age of pump, etc... Just be sure that water is not pouring out of the packings so fast that it fills up the drip cups.
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