ULS
This chart, from Batey���s report, shows #2 ULS heating oil has near-zero sulfur oxide emissions, comparable
to natural gas. (Ref USEPA)
Clean Fuels is able to switch over existing tanks
from Number 6 to Number 2 without manned entry,
Philbrick said.
In the manned entry method, fuel is pumped out
and a person enters the tank and squeegees out the
sludge on the bottom and on the side walls. Then the
tank is flushed out with either high pressure water,
diesel fuel, or a chemical that breaks down oil. Once
the tank is clean, it is pressure tested and refilled.
The Number 6 fuel oil is stored, in some cases,
under the school buildings in New York City, more
or less prohibiting manned entry, Philbrick said.
Another factor working against manned entry is
that it is very expensive, Philbrick said, because of
Occupational Safety and Health Administration
(OSHA) regulations and Environmental Protection
Agency (EPA) requirements that apply and because
of the need for vacuum truck services.
One way of cleaning Number 6 fuel oil from storage containers has been described by Daniel Karpen,
a professional engineer and consultant based in
Huntington, N.Y. It calls for burning the Number
6 fuel oil in a tank until it is almost empty, pumping
www.fueloilnews.com | FUEL OIL NEWS | January 2013
17
