Thanks for the videos, Steven Taylor is one of my favorite trainers and I learn alot from all of you.

Been a boiler operator for 20+ years in state that requires a license and everyone I know blows down low water cutoff and water column every shift per Ohio code. Evaporation test done at least yearly, so in states that have licensed operators in my experience they are done regularly. And an inspector can look in internals of safeties and tell if you are blowing them down regularly.

Thank you guys. I do usually blow down the water column on all 13 boilers, but after watching this, I have a better idea as to why it needs to be done everyday.

Hey guys. Just a guy here who stumbled across your excellent channel. This was a particularly great video you all made. Thanks for doing this, I've learned a ton about steam and boilers from your videos.

We had three 750 HP boilers Clever Brooks. Typically only two ran at a time unless it was real cold then maybe all three, summer only one. So if two where running I would fire up the not being used let it get to temp, and do a sight glass blown down and do the bottom down, repeat on the second boiler EVERYDAY. We would also rotate which two or one would run at any given time. So all three will be running at some point during the week.

Thanks for the videos, they are awesome

I'm a serviceman, the gauge glass will tell you all about the boiler not just water level. You can see steam production on how the water dances in the glass, ooops that's a secret, if water not dance probably making wet steam, lol😆 Thanks for the video, you guys rock.

Thanks for your videos. Really nice for those learning about boilers.

Excellently explained!!

Thanks for putting out videos everyday I really enjoyed them ❤❤😊😊

Thanks for your videos. We are learning a lot from your content. Greetings from Brasil.

Thanks for the video, very helpful.

Thanks so much for this. Learned something new.

thanks from far-away ISRAEL. managed to learn a lot through your highly professional videos...

Amazing and important stuff... Thanks for this content...

Crown sheet failures are no joke. Gettysburg RR in 1995 emphasized the importance of safety. Crown sheets MUST NEVER be exposed to the heat. Always covered w water at ALL TIMES

Very impressive.....

Dude you rock✊🏿

Thank you

Where can I get the drawing behind you at the end of the video? Excellent explanations by the way

Blow down the water column, gauge glass and low water cut out once per shift. Its no joke. The pressure will make your company happy, but your water level will keep them safe. Never sacrifice level for higher pressure or for production

How does the high water pressure not blow out the sight glass?

Good

If the low water cutoff is meant to be instant, how do you deal with large losses of load which cause the water to shrink rapidly and the reduction in firing from the trip causing the water level to continue shrinking (due to the reduction of steam bubbles) further exposing the tops of the water tubes? I understand that during constant loads running out of water can easily melt the tubes and the heat removed before this can do damage, but how do you deal with and adequately protect the boiler during load changes as the water inventory must increase (as the water shrinks) during a load reduction?

What happen to low wtr cut off? Shuts down the fire in the blr.

This is why you make sure the low water fuel cutoff works

Using the McDonall & Miller 750 series with the probe mounted in the top of the boiler, I find it very common that the 750 will not lock out the burner while there is water still visible in the sight glass while the boiler is operating (low pressure). I thought about cutting the probe shorter. But, if I shut the boiler down and blow down the boiler, the 750 will lock the burner out when there is still 1- 1.5" of water in the sight glass. What are your thoughts?

ok how do you add water to the boiler and not have the injected water being added forced out due to the pressure inside the boiler. Is the water entering the boiler at higher pressure then internal pressure?

So what device that prevent too much water in the boiler? The video show some sort of switch above the boiler but didn't mention it. Thanks

Ninguna caldera debería explotar sí tiene tapones fundación chimenea.y lo fundamental cuidar el agua condensación, qué el enemigo uno la espuma,y los instrumentos se confunden.tecnico vapor turbinas Laval. Operaciones.

Are all sight glasses set up where water level should be around 50%

Does the code require the second low water to lock out the burner controls ?

But how are u gonna test the secondary Low water cut off by opening the bottom blow down valve and watching the gauge glass to see if the burner shuts off before thr water in the glass dissapears IF the burner will or should shutoff before that point due to the primary low water cutoffs point of tripping the burner is before the secondary low watwr cut offs. U know what i mean? Do you temporarily jump out the primary low water cut off?

Cool video! I love the cutaway boiler. But Steven, water added to an overheated boiler can't "instantly turn into steam" for several reasons - mainly because a. the water is still under pressure, b. adding water takes time c. convective heat transfer from steel to water takes time d. steel doesn't hold much heat (only 0.12 BTU/lb/ºF) e. but water at 400ºF/250 psi still requires about 800 BTU/lb to turn into steam f. 400ºF water will hardly "wet" red-hot steel at all (Leidenfrost Effect), so with excessively high steel temperature (1200ºF) - amazingly - heat transfer from red-hot steel to water actually takes LONGER than usual at 400ºF. Weird, but true.🧐 g. In other words - adding hot water to red hot steel is exactly the same as adding red hot steel to hot water, it's not nearly as exciting as you think. In rough numbers - say, - ten 2" tubes ten feet long (~300 lbs of steel) - heated to 1200ºF - a dull red (800ºF over 400ºF boiling point) - only contains 21,600 BTU of "excess heat" - - theoretically, enough to turn ~27 lb of water (3.24 gallons) at 400ºF completely into 47 cu ft of steam at 250 psi. - say it took 2.5 minutes total to boil 27 lb completely, so only 13.5 lb *extra* steam/minute (810 lb/hour).🧐 Even if all the 27 lb of water boiled in 30 seconds, a 2" relief valve could handle more than double the extra steam the red hot metal could generate. And the hot tubes can't make steam any faster that you can add water, so if you trickle it in even slower, the total lb/min of excess steam cannot exceed the lb/min rate of water feed. But you need to add 2" water to the boiler to cover the tubes and quench them completely, which would require about 18 gal, or 150 lb - about 6X more water than the "excess heat" in the overheated tubes could boil (27 lb), so the *actual amount* of "excess steam" would be about 4.5 lb total. In other words, water added to an overheated boiler can't "instantly turn into steam" - for a lot of reasons. But it's still not a good idea to quench overheated tubes under pressure for stress reasons. They could shrink fast enough to pull loose, or tear right out of the sheet, which would be bad. So if we found the top row of tubes dry, and they are not leaking yet, I'd say shut off the fuel, stay calm, and don't do nothing except hold the water where it is until it cools down. If we found ALL the tubes were dry, I'd shut off the fuel and run like hell.😂 Please check my (crude) math, but I think it covers the basics.

I am looking boiler operator jobs in Italy please help me

these are great videos.......but your animation on your steam gage logo is telling me its about to blow lol

It looked like the middle of the site glass was way below where the water level he said was supposed to be in the boiler?? Anybody else catch that?