Midlands Canal Turns Green

[cuthound]

Came across this in my newsfeed.

 

https://www.independent.co.uk/news/uk/home-news/birmingham-tame-valley-canal-green-b2517179.html

 

Let's hope CRT can use this method to reduce leaks everywhere.

[Jen-in-Wellies]

Flourescein. A standard way of tracing water flow underground. Cavers use it a lot. There are detectors that will work on concentrations too low to see, if you are concerned about turning large volumes green. Innocuous stuff, but some people get upset!

Saw it some years back being used in the Macclesfield Canal, actually in Macc beside a building site.

[IanD]

2 hours ago, Jen-in-Wellies said:

Flourescein. A standard way of tracing water flow underground. Cavers use it a lot. There are detectors that will work on concentrations too low to see, if you are concerned about turning large volumes green. Innocuous stuff, but some people get upset!

Saw it some years back being used in the Macclesfield Canal, actually in Macc beside a building site.

Shows up particularly well under flourescent lights... 😉

[Red Dwarf]

We do orange up at the top end of the Bridgewater Canal here, rust from the old mine workings.

Don't make no nevermind to me, I'm colourblind.

Is it called algal bloom or something when it's, green rather than rusty orange, I think. K

[davem399]

10 hours ago, Jen-in-Wellies said:

Flourescein. A standard way of tracing water flow underground. Cavers use it a lot. There are detectors that will work on concentrations too low to see, if you are concerned about turning large volumes green. Innocuous stuff, but some people get upset!

Saw it some years back being used in the Macclesfield Canal, actually in Macc beside a building site.

I've used fluorescein at sea in a previous life to find leaks in condensers on steam turbines.  Used in conjunction with fluorescent lamps (as stated by IanD).

Edited March 24 by davem399

[Cheshire cat]

I managed to turn Fradley junction green at some point years ago. I was looking for a leak in my boat. can't remember the detail

 

[IanD]

1 hour ago, davem399 said:

I've used fluorescein at sea in a previous life to find leaks in condensers on steam turbines.  Used in conjunction with fluorescent lamps (as stated by IanD).

You didn't get the joke then... 😉

 

(flourescein/flourescent...)

[davem399]

10 hours ago, IanD said:

You didn't get the joke then... 😉

 

(flourescein/flourescent...)

I got sucked into fluorescent lamps when I should have said UV lamps for detecting holes in condenser tubes.