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Old 06-24-2020, 08:49 AM   #1
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Default How far out is your flash boundary game.

Here is a fire pump disco in Queens NY.

51’ 6”

Beat that.


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Old 06-24-2020, 08:50 AM   #2
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Old 06-24-2020, 08:51 AM   #3
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I think you're going to have all of us beat, that's quite a blast radius!
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Old 06-24-2020, 08:52 AM   #4
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You have really good zoom on your camera.
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Old 06-24-2020, 09:40 AM   #5
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Like me, they don't play. I once stole a dump truck and rammed it into a substation just so I could change a doorbell push button.
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Old 06-24-2020, 10:05 AM   #6
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Here is another




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Old 06-24-2020, 01:44 PM   #7
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I was shown one during a course that was something like 10,000 inches.
I'll see if there is a picture in the manual?

Tim
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Old 06-24-2020, 02:28 PM   #8
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833 feet?

I hope you find the picture.
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Old 06-24-2020, 03:30 PM   #9
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Quote:
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You have really good zoom on your camera.

I have a Nightforce NSX mounted on my iPhone.


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Old 06-24-2020, 04:02 PM   #10
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82' is not in that room...definitely a dangerous way to hook up an electric fire pump.

looks like they came right from bus of that cubical.

there should be no disconnect there.

everything should be in ground or encased in concrete to the fire pump controller.
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Old 06-24-2020, 04:04 PM   #11
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82' is not in that room...definitely a dangerous way to hook up an electric fire pump.

looks like they came right from bus of that cubical.

there should be no disconnect there.

everything should be in ground or encased in concrete to the fire pump controller.

Fire pump disco is unfused from service line side per code.

82’ one is a commercial main. Building has 5 services in the main swgr room.


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Old 06-24-2020, 04:19 PM   #12
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so there is no controller...you are permitted 1 disconnecting means between the source and fire pump.

and all conduits need to be encased in concrete....unless you are in some sort of out building for fire pump only use.
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Old 06-24-2020, 04:21 PM   #13
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Quote:
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so there is no controller...you are permitted 1 disconnecting means between the source and fire pump.

and all conduits need to be encased in concrete....unless you are in some sort of out building for fire pump only use.

Dunno all I can say is that it is in a utility and was built in the 60’s. I was there to open up the gear for a coordination study


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Old 06-24-2020, 08:25 PM   #14
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Is this why Boeing shut down their building with the 48K right next to the camera I was working on?

They told me I couldn't get within 80 ft of the camera until they told me it was safe.

It was quite the ordeal as I remember. It was during the annual Christmas shutdown everyone called a strike.
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Old 07-12-2020, 11:13 AM   #15
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Quote:
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Is this why Boeing shut down their building with the 48K right next to the camera I was working on?

They told me I couldn't get within 80 ft of the camera until they told me it was safe.

It was quite the ordeal as I remember. It was during the annual Christmas shutdown everyone called a strike.
This brings back memories. The annual Christmas shutdowns. All the Boeing maintenance electricians sitting in the shop eating donuts while the outside electrical contractors were hard at work. A couple of hours would go by and it was safe to start working on cleaning insulators and tightening connections.
One thing I can say about Boeing was that it was a very safe place to work and it took forever to get anything done because of all the safety rules and security hurdles you had to overcome.
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Old 07-12-2020, 01:23 PM   #16
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Quote:
Originally Posted by VELOCI3 View Post
Fire pump disco is unfused from service line side per code.

82’ one is a commercial main. Building has 5 services in the main swgr room.


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Code waives overloads and instead mandates 200% of FLA. It does NOT eliminate short circuit protection. This makes logical sense. An overload is a load problem...the pump is pulling too much. But for a fire pump we keep running until the motor just outright seized up and totally burns up. Oversized wiring allows this to occur safely. But a short circuit is an electrical problem and a big safety problem, so required by Code. So fire pumps might not follow 430 but that doesn’t mean we just throw safety out the window. They just chose a different path.

Not having a disconnect would be crazy...no way to work on it safely short of pulling utility cutouts. That would be a direct OSHA regulatory and Code regulatory issue.

I’ve had several stupid contract engineers and multiple fire marshalls get this wrong. I don’t know where they get their information from. Code is plain as day.
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Old 07-12-2020, 01:44 PM   #17
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Old 07-15-2020, 06:22 PM   #18
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397 Cal!
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