Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

"Rob" wrote in message
...
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting
it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

Depends on how far away it is from valuable things like houses and such.
How about pouring in about a quart of gasoline, let it sit in the sun for a
few hours then toss in an M-80. It'll be real easy to cut up the big
pieces. There are people on this NG that are figuring exactly how much
gasoline, at what temp and how long to wait. Other people are figuring how
to add servo motors and PLCs. There's no wrong way to blow it up! Somehow
this will turn into a political issue and it'll be Bush's fault, or..."Hold
my beer and watch THIS!"

1. A metal cutting blade in a Sawzall (recip saw). Cheap, relatively fast.

2. A Tenyru style metal cutting blade in a circular saw. Fastest, more
expensive ($40-50 for the blade), very noisy. VERY hot chips.

3. A cut off wheel in an angle grinder. Cheap, slow, noisy, dirty.

Do NOT cut it with Qxy-fuel torch. It's too easy to introduce O2 &
create an explosive mixture. None of my choices have any danger.

Bob

Rob wrote:

Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

Cutting up a heating oil tank is relatively easy and safe since heating
oil / #2 diesel fuel isn't particularly volatile, however that is not
the issue. The issue you will have is disposing of the oil coated metal
pieces and worse yet the thick layer of sludge that is invariably on the
bottom of the tank. The US had less stringent regulations on suck stuff
than the UK and even here it's generally not worth the trouble of trying
to remove and dispose of a heating oil tank yourself. It can be done,
but if you attach any value to your time it's cheaper to have a properly
equipped and insured company do it.

On Jul 17, 5:17�pm, (Rob) wrote:
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

Rob

Fill it full of water. Introduce an oxidizer and let it rust. Back
fill with dirt as necessary. Should not take more than a few years.
And not much effort needed. If you get bored you can pull up a chair
or old couch and have some beers while you wait.

Bob AZ

"Rob" wrote in message
...
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting
it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

I've done three of them, use thick sawzall blades, scrape the sludge out and
bring it to a municipal oil recycling area, and the metal pieces to the
dumps. Check your local regulations.

On Fri, 17 Jul 2009 21:31:55 -0400, Buerste wrote:

"Rob" wrote in message
...
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating
oil / medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first
cutting it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

Depends on how far away it is from valuable things like houses and such.
How about pouring in about a quart of gasoline, let it sit in the sun
for a few hours then toss in an M-80. It'll be real easy to cut up the
big pieces. There are people on this NG that are figuring exactly how
much gasoline, at what temp and how long to wait. Other people are
figuring how to add servo motors and PLCs. There's no wrong way to blow
it up! Somehow this will turn into a political issue and it'll be
Bush's fault, or..."Hold my beer and watch THIS!"

Or Obama's fault, for letting OSHA say you can't do it.

--
www.wescottdesign.com

"Rob" wrote in message
...
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting
it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob


Rob, years back I used to monitor the removal of gas and oil tanks in CA.
Weren't allowed to use any steel tools (not even wrenches) due to spark
danger. Everything had to be brass or equivalent non-sparking. Reg's
required us to dump dry ice into the tank to displace the volatile stuff.
After 3-4 hours we would finally get low enough readings with an electronic
detector (sniffer) to allow tank removal and off-haul to a metal recycler.

NOTE: There are many documented cases of recyclers being blown to bits from
cutting into tanks delivered as above. Reason? They would wait weeks or
months to cut into the tank by which time the tank is again full of
volatiles that came from the greasy insides. These tanks were all
completely empty but for a tiny bit of product along with greasy, oily
sides.

DO NOT cut into the tank with anything that is metal (saws-all etc.) unless
you very recently have displaced the formed gases with either dry ice,
water, or whatever you have that is heavier than the explosives.

Ivan Vegvary

Ivan Vegvary wrote:
Rob, years back I used to monitor the removal of gas and oil tanks in
CA. Weren't allowed to use any steel tools (not even wrenches) due to
spark danger. Everything had to be brass or equivalent non-sparking.
Reg's required us to dump dry ice into the tank to displace the volatile
stuff. After 3-4 hours we would finally get low enough readings with an
electronic detector (sniffer) to allow tank removal and off-haul to a
metal recycler.

I'd expect no less from the CA govmint G. Well, Massachusetts holds
its own in the my-regs-are-more-onerous-than-yours race. Guys show up
in moon suits to remove oil tanks. Gimme a break!

NOTE: There are many documented cases of recyclers being blown to bits
from cutting into tanks delivered as above. Reason? They would wait
weeks or months to cut into the tank by which time the tank is again
full of volatiles that came from the greasy insides. These tanks were
all completely empty but for a tiny bit of product along with greasy,
oily sides.

DO NOT cut into the tank with anything that is metal (saws-all etc.)
unless you very recently have displaced the formed gases with either dry
ice, water, or whatever you have that is heavier than the explosives.

Please!! Get a grip! The OP has a fuel oil tank, fercrissakes, it's
NOT going to blow up, catch fire, or do anything other than smell bad!

Bob

Please!! Get a grip! The OP has a fuel oil tank, fercrissakes, it's NOT
going to blow up, catch fire, or do anything other than smell bad!

Bob

There's a 1:1000 chance that gasoline got mixed in the fuel oil at some
point. To be prudent, I'd purge the O2 out. Tail pipe hose from a car works
great if you don't have a CO2 bottle or dry ice.

Karl

On Jul 18, 2:31*am, "Buerste" wrote:

Depends on how far away it is from valuable things like houses and such.
How about pouring in about a quart of gasoline, let it sit in the sun for a
few hours then toss in an M-80. *It'll be real easy to cut up the big
pieces. *There are people on this NG that are figuring exactly how much
gasoline, at what temp and how long to wait. *

Tried that when I was a teenager on a smaller scale. End of summer in
Louisiana, five gallon container with lid. Used cotten cord soaked
with saltpeter for fuse which went thru small hole in the cap. Small
amount of gasolene, maybe a pint.

Anyway friends and I took it down by the bayou, parked the car ready
to get out of there. Lite a match and brought it over the cap to get
to the end of the fuse. And instantly had a small flame about two
inches high from the fumes leaking around the fuse.

Thought OS, and then saw that a police car was coming down the dirt
road that was the only way back to pavement.

Eventually while the police were lecturing on the dangers of gasolene,
I took a clod of dirt and extinguished the flame.

The gasolene vapors had driven out all the air in the time between
when we had put the gasolene in and when we had gotten out by the
bayou.

The police took the names we gave them and let us go on our way. I
forget the names we gave them.

Dan

On Fri, 17 Jul 2009 23:31:30 -0400, "ATP*"
wrote:


"Rob" wrote in message
...
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting
it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

I've done three of them, use thick sawzall blades, scrape the sludge out and
bring it to a municipal oil recycling area, and the metal pieces to the
dumps. Check your local regulations.

After scraping the gunk out, throw the remainingmetal on a bon-fire -
the metal is then clean enough for the scrapyard.

Might need a burn permit for the bonfire.

On Sat, 18 Jul 2009 10:15:08 -0400, Bob Engelhardt
wrote:

Ivan Vegvary wrote:
Rob, years back I used to monitor the removal of gas and oil tanks in
CA. Weren't allowed to use any steel tools (not even wrenches) due to
spark danger. Everything had to be brass or equivalent non-sparking.
Reg's required us to dump dry ice into the tank to displace the volatile
stuff. After 3-4 hours we would finally get low enough readings with an
electronic detector (sniffer) to allow tank removal and off-haul to a
metal recycler.

I'd expect no less from the CA govmint G. Well, Massachusetts holds
its own in the my-regs-are-more-onerous-than-yours race. Guys show up
in moon suits to remove oil tanks. Gimme a break!

NOTE: There are many documented cases of recyclers being blown to bits
from cutting into tanks delivered as above. Reason? They would wait
weeks or months to cut into the tank by which time the tank is again
full of volatiles that came from the greasy insides. These tanks were
all completely empty but for a tiny bit of product along with greasy,
oily sides.

DO NOT cut into the tank with anything that is metal (saws-all etc.)
unless you very recently have displaced the formed gases with either dry
ice, water, or whatever you have that is heavier than the explosives.

Please!! Get a grip! The OP has a fuel oil tank, fercrissakes, it's
NOT going to blow up, catch fire, or do anything other than smell bad!

Bob
Don't count on it.
I've seen oil-pans blown off engines when someone tries to braze on a
patch. Engine oil is a lot less volatile than fuel oil..

A quick-cut cold saw might be safe, but I'd staw away with an an
abrasive cut-off disc.

wrote:

On Sat, 18 Jul 2009 10:15:08 -0400, Bob Engelhardt
wrote:

Ivan Vegvary wrote:
Rob, years back I used to monitor the removal of gas and oil tanks in
CA. Weren't allowed to use any steel tools (not even wrenches) due to
spark danger. Everything had to be brass or equivalent non-sparking.
Reg's required us to dump dry ice into the tank to displace the volatile
stuff. After 3-4 hours we would finally get low enough readings with an
electronic detector (sniffer) to allow tank removal and off-haul to a
metal recycler.

I'd expect no less from the CA govmint G. Well, Massachusetts holds
its own in the my-regs-are-more-onerous-than-yours race. Guys show up
in moon suits to remove oil tanks. Gimme a break!

NOTE: There are many documented cases of recyclers being blown to bits
from cutting into tanks delivered as above. Reason? They would wait
weeks or months to cut into the tank by which time the tank is again
full of volatiles that came from the greasy insides. These tanks were
all completely empty but for a tiny bit of product along with greasy,
oily sides.

DO NOT cut into the tank with anything that is metal (saws-all etc.)
unless you very recently have displaced the formed gases with either dry
ice, water, or whatever you have that is heavier than the explosives.

Please!! Get a grip! The OP has a fuel oil tank, fercrissakes, it's
NOT going to blow up, catch fire, or do anything other than smell bad!

Bob
Don't count on it.
I've seen oil-pans blown off engines when someone tries to braze on a
patch. Engine oil is a lot less volatile than fuel oil..

Engine oil, and the oil sump in general gets contaminated with gasoline
blow-by past the piston rings, and 99.999% probability it was that
gasoline vapor that blew the pan off, not the engine oil.


A quick-cut cold saw might be safe, but I'd staw away with an an
abrasive cut-off disc.

I'd go with a sawzall personally, however I would dump some dry ice in
since it's cheap insurance.

On Jul 17, 8:17 pm, (Rob) wrote:
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

I did an old cylindrical 350 gallon tank under an enclosed porch.
Local companies wanted $1000+ 2$/gallon to dispose of the old oil.
The only opening in the block wall to the tank was much smaller than
the tank. The tank had ~ 250 gallons of 30+ year old fuel oil in it.
I pumped it into drums with a air driven diaphragm pump and gave it to
a local garage with a waste oil heater. He was glad to get it. I
purged the tank with Nitrogen, but was still nervous, so I broke up 5
lbs of dry ice and dropped it into the tank, the vent was still
connected and I was was getting a good flow of CO2 out of the vent
when I started cutting it up with the Sawzall. Took about an hour to
reduce the size to chunks small enough to remove through the small
doorway. The wall thickness on this old tank was pretty heavy, and I
was pleased to see after scraping the inch or so amount of sludge out
of the bottom none of the corrosion went through the bottom of the
tank which was resting on bare soil. Total weight at the scrap yard
was an amazing 800 lbs. which more than paid for the Sawsall blades.

On Sat, 18 Jul 2009 22:12:08 -0700 (PDT), oldjag
wrote:

On Jul 17, 8:17 pm, (Rob) wrote:
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

I did an old cylindrical 350 gallon tank under an enclosed porch.
Local companies wanted $1000+ 2$/gallon to dispose of the old oil.
The only opening in the block wall to the tank was much smaller than
the tank. The tank had ~ 250 gallons of 30+ year old fuel oil in it.
I pumped it into drums with a air driven diaphragm pump and gave it to
a local garage with a waste oil heater. He was glad to get it. I
purged the tank with Nitrogen, but was still nervous, so I broke up 5
lbs of dry ice and dropped it into the tank, the vent was still
connected and I was was getting a good flow of CO2 out of the vent
when I started cutting it up with the Sawzall. Took about an hour to
reduce the size to chunks small enough to remove through the small
doorway. The wall thickness on this old tank was pretty heavy, and I
was pleased to see after scraping the inch or so amount of sludge out
of the bottom none of the corrosion went through the bottom of the
tank which was resting on bare soil. Total weight at the scrap yard
was an amazing 800 lbs. which more than paid for the Sawsall blades.
My first involvement in conversion of navigational aids to solid state
in the mid '70s, we would pump out the underground diesel fuel tank
and fill it with sand. By 1990, the tank had to be removed and the
soil underneath hauled to a hazardous material handling facility until
all traces of contamination were removed.
At one point I did a survey of airports to list all underground fuel
tanks. One former military field had at least two tanks at each hangar
- some still in use after 40+ years and just inside the former Base
main gate, a storage tank for gasoline which was sold to civilian
employees (gas was rationed during WWII and civilian staff were
allowed to buy on base but couldn't drive on base unless they had car
insurance, which most did not). In this case, all evidence of the
fueling facility had been removed for grounds maintenance but the tank
was still there. I had stumbled on it's existence through review of
old base records.
Another case involved an abandoned fuel tank buried under an interior
courtyard with no access for excavation equipment.
Gerry :-)}
London, Canada

"Rob" wrote in message
...
Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting
it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob


following this thread with interest.
i had heard of someone who hand dug around a 1000 gallon tank, was in the
ground since the 70's. was too heavy to pick up with a compact tractor so
he plugged the tank and filled the trench with water and floated the tank up
and rolled it out of the trench, he felt clever and was proud. after
getting it out he cut a 2' x 2' square hole in one end with a bosch jigsaw
and scooped out the inch or so (on the low end of the tank) of sludge. he
said he was amazed there was only *slight* pitting at the bottom of the tank
so it was obvious there couldn't've been any oil leaking at all, the tank
was in good/excellent condition but the fear of a leak precipitated it's
removal. the empty pit was entirely oil free, thank goodness. tank was
made of (surprisingly) 3/16" thick plate. cut it up the rest of the way
with a plasma cutter. no fire/smoke problem at all.
second tank he cut up was dragged out of the woods from an abandoned
farmer's road. 275 gal. tank had obviously been sitting there for like
15/20 years. actually had tiny holes rusted through in a couple spots.
sniffing inside BARELY smelled at all of oil. figured it was safe to start
cutting with the plasma and forego the hassle of starting with the
sawzall/jigsaw. this person wasn't aware of the dry ice trick and was too
cheap to go get a bottle of CO2, figured he'd chance it. figured whatever
traces of fuel oil vapors that remained weren't volatile enough to ignite.
there were mice nests inside the tank and when plasma cutting the tank the
mouse nests started to smoke. was kinda scary because the smoke was like a
funky green or brown color. he was worried there might be enough volatile
material in the funky colored smoke to ignite, and there was great fear it
might ignite explosively. scariest part was when he was spraying water into
the open bung holes of the tank it actually seemed if the smoke increased!
it didn't start to subside for a WHILE. there was a increasing fear that
there might've been something in the tank other than old evaporated fuel
oil. he attests it was really quite terrifying. i think he was very lucky
that time(!). after cutting this tank had no sludge but organic (weeds,
grass, straw) mouse nest materials (and two oil mummified mice). recently
there was wondering if it would be possible to get a small (80cu.ft) tank of
CO2 and empty the CO2 gas into a 275 gal. fuel oil tank to safely cut it up.
now there is wondering how many pounds of dry ice would be enough to make
enough CO2 gas to fill a 275 oil tank to safely cut it up. this person
doesn't have the electronic sniffer tool mentioned in a post to this thread.
there was something recently on-line about a local tank removal company
writing they "inert" an 1000 gallon tank and then there were still photos of
an access hole being cut with a demolition saw w/ abrasive wheel.
the person cut the tank in half, lengthwise, and then trimmed the two halves
so they could be used as a large "tray" or "scoop" on the forks of a
"forklift" thingy on the three point hitch on back of a compact farm
tractor. turns out they're really quite useful for hauling rocks (full
bucket in front and a "full" tray on the rear). and hauling firewood from
the area where his log splitter is to the woodshed, a 275 gal. fuel oil tank
cut lengthwise holds more than the front bucket of a compact farm tractor,
easier, less trips. i think the steel "tray" is possibly even lighter than
if it were to be built of wood.

On Jul 17, 9:31*pm, "Buerste" wrote:
"Rob" wrote in message

... Hi folks

I have 300 gallon tank formerly filled with gas oil / 35 sec heating oil /
medium diesel (not sure
of the U.S. terminology). The only way I can remove it is by first cutting
it
up. Any suggestions / comments
so as to do this safely?

Regards
Rob

Depends on how far away it is from valuable things like houses and such.
How about pouring in about a quart of gasoline, let it sit in the sun for a
few hours then toss in an M-80. *It'll be real easy to cut up the big
pieces. *There are people on this NG that are figuring exactly how much
gasoline, at what temp and how long to wait. *Other people are figuring how
to add servo motors and PLCs. *There's no wrong way to blow it up! *Somehow
this will turn into a political issue and it'll be Bush's fault, or..."Hold
my beer and watch THIS!"

Heh, I've always wanted to thread an old air compressor for a spark
plug and then put a carb on the intake...

I figure the tank would have to be slightly heated for optimal
results.


Dave