Overpressurizing / Overfilling steel tanks

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Orignially posted on TCPalm.com

November 15,2001

By Tony Judnich
News staff writer

The death of a well-respected diving expert who lost his life while on
the job Tuesday has struck the local diving community hard, family and
friends say.

Ron Scherrer, co-owner of Dive Center of Sebastian, was killed Tuesday
at his store when an air tank he had been filling for a customer
exploded. Scherrer, 72, died from massive chest and head trauma,
Sebastian Police Detective Joe Dillon said.

Scherrer's wife and the store's co-owner, Virgene, and a customer were
in the shop at 1716 U.S. 1 when the explosion occurred, but they were
not injured, Dillon said.

Chris Hammett, co-owner of Deep Six Dive and Watersports in Vero
Beach, said Scherrer was "a great competitor, a fantastic technician.
He knew a lot of about diving.

Scherrer's death "is definitely a dreadful shame to the industry,
that's for sure," he said.

Dillon said the tank that had exploded had been weakened by rust and
the tank's inspections were not up to date.

Condensation had caused the tank to rust inside from "top to bottom,"
he said. Air tanks are supposed to be visually inspected annually and
undergo hydrostatic pressure tests every five years, Dillon said.

Dillon said the tank that exploded was made in 1988 and received its
last visual inspection in October 1999. It received its last
hydrostatic test in 1991, he said.

Mrs. Scherrer said her husband was "a very gentlemanly person, very
friendly and always a very happy person. He loved being in the scuba
business. All of the people in the industry really respected him.

In addition to his wife, Ron Scherrer is survived by his four
children: Susan of Minneapolis, Minn.; Connie and Mike, both of
Indianapolis; and Steve, of Grant.

Mrs. Scherrer said she doesn't know if she'll continue to operate Dive
Center.

"We have a lot of things to think about," she said.


Hope this helps,
Chris
COVCI
 
Sorry Chris, But I dont believe OVERFILLING had anything to do with that incident. By reading the article, one can see that the tank did NOT have a current inspection. The cylinder was rusting from the inside, and an internal inspection would have found this...
 
Boogie said, "No one has ever died from a tank exploding on them."

Hmm...cylinder exploded....guy died...

Not a tough one there Chuck.
 
Years ago (when it was a decent magazine) "Skin Diver" contained an article
about a LDS owner who was asked to fill a friend's tank. Only problem was
the tank was out of date re: inspections.

"Cmon .. PLLLLLLEAAAASEEEEE?"

"Well, OK ... just this one time."

BOOM !!!

The resulting explosion blew apart the fill tank and the wall next to it as well
as hurling a human body through the air and over a counter. My recollection is that it was some months before the human-torpedo was able to walk
without a cane.

Over-filling tanks is like "compressing" gun-powder when reloading. You'd
best be certain the object being filled/used is in top condition.
Make certain your tanks are inspected. O
 
I did have a guy once report to me that he saw a woman have a cylinder explode while she was making a giant stride from a boat.

Claimed to have had pictures, but was never able to present them.

He claimed it happened in France.

Chris
COVCI
 
Boogie711:
OK then - no one has ever died from having a tank explode in mid-dive.

Divers have drowned by running out of air.

Feel better now?

Yes, but it seems to me that if you want me to fill a tank for you, that you should be willing to stand next to it while I fill it :D

That way if it explodes you're my "human shield."

Sound good? :)

(I don't overfill tanks.)
 
Wasn't it Bill High's company that said overfilling LP steels, to the pressure that most of us do, will shorten the fill cycle of a typical tank to failure by Hydro testing from 30,000 cycles to 10,000?

I say, who's gonna do 10,000 dives on the same tank?

Very few.

Double disk them, and have at it. OK OK, I mean REASONABLY have at it. Say, 3400 - 3500 PSI tops.

Some guys are touching 4000 PSI, now that scares me a tad, even though I'm reasonably sure it ain't gonna blow.

Of course, if you need more gas, get a bigger tank?

OR

What do you need that much gas for in the first place?

All valid questions.
 
I'd be VERY interested to see the actual stats on what makes the NEW E8-130's different than the LP104's.

Wall thickness etc. Lets get down to where the rubber meets the road. My thoughts would be that they are just about the same tank, with a different rating......just like in Europe?
 

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