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Re: Totally OT: Water tank weirdness

Cross-posted to 2 groups.

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On 17/5/2022 12:37 pm, Sylvia Else wrote:
> The problem started with the appearance of dust and grit falling into 
> the bath. It was not at all obvious where it was coming from. With 
> showers being preferred, the bath is little used, so this wasn't coming 
> from the taps. I climbed into the roof space above the bathroom, but 
> nothing was apparently amiss.
> 
> In the roof space there is an old tank, which I surmise was once the hot 
> water tank. It has long been unused, and was presumably left there 
> because it would be difficult to remove, and there was no compelling 
> reason to do so. There is also some pipework that I had originally 
> presumed was unused.
> 
> It's very dusty up there, and I have to wear a proper filter mask. As I 
> was returning the mask to the garage area below the living area of the 
> house, where I keep such things, I heard a noise coming from the hot 
> water tank. Turned out there was a leak from where the heating element 
> goes in. Given that the tank is under pressure, the leak was making a 
> hissing noise.
> 
> Now, some years ago, I tried to trace the origin of the water-hammer 
> noise, searching under the house without success.
> 
> My visit to the roof space made me wonder whether that pipe was really 
> unused. Indeed it appears to have been sealed off. I now think that one 
> part of it goes down the wall into the garage area to join the hot water 
> output, with the other part heading down to the laundry. And where it 
> goes down the wall is close to where the dust and grit is falling into 
> the bath.
> 
> All of which makes me think that the dust and grit in the bath and the 
> leak in the hot water tank are not unrelated. My theory is that this is 
> the pipe that makes the water-hammer noise, given that it's not well 
> attached to the framework, and that the tank leak changed the hammer 
> pattern enough for the pipe to disturb different dust/grit in the roof 
> space which is then able to enter the bathroom through a small gap in 
> the ceiling trim.
> 
> On one level, this seems rather far-fetched. Yet the coincidence in 
> timing is remarkable.
> 

If you can access the other end of the pipe in question it should be 
easy enough to cut and cap it.
Is it copper or gal? A plumber shouldn't charge too much to do a simple 
job like that if you can't do it yourself.
Does your bathroom have a ceiling fan?
If so that the most likely place the dust will be coming from, newer 
ceiling fans have a flap that closes when the fan is not in use so 
fitting a new ceiling fan should solve the dust problem.
You could also use No More Gaps to seal "a small gap in the ceiling trim".


-- 
Daryl

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Thread

Totally OT: Water tank weirdness Sylvia Else <sylvia@email.invalid> - 2022-05-17 12:37 +1000
  Re: Totally OT: Water tank weirdness Noddy <me@home.com> - 2022-05-17 12:53 +1000
    Re: Totally OT: Water tank weirdness Sylvia Else <sylvia@email.invalid> - 2022-05-17 13:39 +1000
      Re: Totally OT: Water tank weirdness Noddy <me@home.com> - 2022-05-17 20:30 +1000
    Re: Totally OT: Water tank weirdness Xeno <xenolith@optusnet.com.au> - 2022-05-17 15:57 +1000
    Re: Totally OT: Water tank weirdness "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-18 11:24 +1000
  Re: Totally OT: Water tank weirdness Daryl <dwalford@westpine.com.au> - 2022-05-17 14:10 +1000
  Re: Totally OT: Water tank weirdness "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-18 11:08 +1000
    Re: Totally OT: Water tank weirdness Sylvia Else <sylvia@email.invalid> - 2022-05-18 12:46 +1000
      Re: Totally OT: Water tank weirdness Peter Jason <pj@jostle.com> - 2022-05-18 13:43 +1000
      Re: Totally OT: Water tank weirdness "Rod Speed" <rod.speed.aaa@gmail.com> - 2022-05-18 14:32 +1000

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