|
Posted by hallerb@aol.com on June 13, 2008, 11:42 pm
>
>
>
>
>
>
> > "gas pressure in homes is at most a few ounces, so water can easily
> > enter."
>
> > The pressure in the gas company pipes running down the street are
> > relatively low and less than 10 psi. =EF=BF=BD =EF=BF=BDThe presure is r=
educe to something
> > on the order of 10" of water by a regular on the "company side" of the g=
as
> > meter. =EF=BF=BD These regulators are vented and if they are underwater =
they might
> > permit higher than normal gas pressure to enter the gas meter.
>
> > The meters themselve are completely sealed except for the inlet and outl=
et
> > pipes. =EF=BF=BD Unless someone let a stove burner on, I don't see how w=
ater could
> > get into the gas pipes from the customer side.
>
> > "gas companies know what to do, and will get everything right before
> > turning gas back on."
>
> > Indeed.
>
> > That's their job.
>
> > i heard they put vacuumn pumps on some lines.
>
> Here is one you may not have heard before. Before I retired, I worked at a=
> gas utility. Sometimes dirt would get in a line when it was dug up or any
> other reason. Small lines such as 1/2 plastic services would have to be du=
g
> up and replaced to prevent dirt from finding its way into appliances becau=
se
> they had no way to ensure dirt was not stuck in the line. They found that
> (this was suggested by a female pipe fitter) putting a tampon in the pipe
> and using compressed air to blow it out the other end would clean out the
> pipe thoroughly. After that all maintenance trucks carried a box of tampon=
s
> with them.- Hide quoted text -
>
> - Show quoted text -
ho ho.
my best friend has run his vehicles on compressed natural gas since
the 1972 gas crisis,.
he had to add heaters to his regulators, in the summer water or
moisture enters the gas lines and would freeze up his regulator,
not a winter problem, apparently the crews are more careful then, as
it would cause service outages. moisture enters during repairs
in a flood appliances float, wierd stuff occurs and water can enter.
meters often have regulators vented to air, but in a flood high water
can get in everywhere.
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap