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  1. jaymiess

    Jockey Pump too Cold?

    Thanks for weighing in stookey. The purpose of starting this thread was basically to see if anyone had experienced a similar situation, and to possibly brainstorm to come up with a possible scenario or two that could perhaps shed some light on what happened. I would think that's actually one...
  2. jaymiess

    Jockey Pump too Cold?

    For sure they need to keep pipes from freezing in the room with the fire pump and jockey pump. That's just common sense. The problem is explaining how ice formation may have caused a sprinkler head to activate in the middle of the building three floors down in a well-heated area. And then...
  3. jaymiess

    Jockey Pump too Cold?

    Yes there is a water tank on the roof. First head pop was in a laundry room. Old fire sprinkler company dropped in favor of a new one because they were not responsive during event. They were unable to come up with an explanation either. I don't think the new sprinkler company offered any...
  4. jaymiess

    Jockey Pump too Cold?

    The jockey pump and main pump are side-by-side in the cold room on the roof penthouse. I only mentioned the jockey pump because it has smaller diameter pipes that I thought would be more likely to freeze up first. The fire pump annual inspection paperwork indicates: Suction pressure gauge: 10...
  5. jaymiess

    Jockey Pump too Cold?

    Oh I see you asked about the static pump pressure on the system. I have photos of the gages in the room where the jockey pump is located so I'll have to check them.
  6. jaymiess

    Jockey Pump too Cold?

    I think I understand your scenario... You mean the fire pump pressure when it is running? I don't know I will have to check into that. If it's too high I suppose it can cause sprinklers to activate? Thanks.
  7. jaymiess

    Jockey Pump too Cold?

    Yes it was a glass bulb. Actually there were three different sprinkler head activations in this building on this particular night (all glass bulbs I believe), one of the coldest of the year. Fire department came out three times. Last activation occurred as soon as the system was recharged...
  8. jaymiess

    Jockey Pump too Cold?

    This is not my specialty but I want to see if my suspicions might be correct. Hopefully someone here can perhaps answer my question. Would it be possible to have activation of a sprinkler head in a wet system due to water freezing in the jockey pump? I have a case like this where the jockey...
  9. jaymiess

    Flood through conduits

    Thank you very much for the helpful replies. As you can see I'm a structural engineer and could use a few hints when it comes to these subjects. Now a follow-up question (or two). Is it standard to raise the opening of the conduit up off of the bottom surface of the transformer pit or use...
  10. jaymiess

    Flood through conduits

    Working on a case where transformer pit flooded and water entered underground conduit and entered homeowners basement where electrical service enters the house. Caused major flooding damage because house was downhill from transformer. Beginning of conduit in transformer pit was resting on the...

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