Re: 4960
Author: Tom Moungovan
Date: 05-23-2011 - 06:35
Robby Peartree Wrote:
-------------------------------------------------------
> Hi Tom
>
> Your numbers are right on gallons and weight . We
> would try to fill to 13,000 gallons of H2O if we
> had a helper and 15000 gallons if we did not. With
> me firing I typically went though 10,000 gallons
> NB amd 8 to 9,000 SB. Nothing like turning on the
> wye at GC with 195-200 psi on the boiler and 1/2
> of a glass of H2O when you stop with the continous
> blowdown running.
>
> Robby
Thanks for the comments Robby. That helps a lot. I had nearly forgotten about the continuous
blowdown, yet another reason that the Burlington version of 4960 would not have worked out
very well in Arizona. Continuous blowdown is a steam industry practice and has been for many
decades, we used it where I worked. One crew forgot to open it after firing up a boiler and
within 4-5 hours at normal steaming rates (140,000 lbs./hr.) could not control the water level
as it was foaming so badly. Luckily, the head operator on shift that day was an old head. He
figured it out and sent somebody up top to open the first valve off of the top of the steam
drum and it settled right out. They never made that mistake again.