|
Recommended for
decontamination of
floor/wall areas and
equipment. Also can be
used as a protective
layer. May be applied to
most surfaces including,
metal, wood, concrete,
and painted materials.
Chemical composition
conforms to requirements
for use on reactor
primary system
components. When
applied over a
contaminated surface,
2050 attracts and binds
heavy metal isotopes and
debris. Upon cure, the
product chemically locks
the contaminants into a
polymer matrix. Removal
of the film
decontaminates the
substrate and yields a
solid radioactive waste.
process of developing
methods to decontaminate
a process hot cell that
has a film of residual
solids left after the
evaporation of
Hydroflouric Acid, Boric
acid, Nitric Acid and
Aluminum Nitrate
chemicals that contained
relatively high
concentrations of
dissolved cadmium,
boron, uranium and
zirconium. Deconpeel can
be used to help
strip off and minimize
the contamination on
walls and floors made of
welded stainless steel.
Customer Inquiry :
Nuclear application
- a strippable
coating to bind up and
help remove solidified
residuals of the
following liquids:
Zirconyl Nitrate in 2M
Nitric Acid; Aluminum
Nitrate 2 M with 30 g/L
cadmium Nitrate;
Hydrofluoric Acid with
12 g/L Boron, cadmium
sulfate, Nitric Acid 13M
with 30 g/L cadmium
nitrate. These acids
would have zirconium
alloys, uranium and
transuranic isotopes
dissolved in them.
The materials have dried
to a crystalline powder
on sst and hastaloy
surfaces.
Also, small volumes of
these liquids will be
spilled on the applied
coating over a period of
12 months prior to
removal.
Do you have a coating
that can be applied over
a wet surface? There
appears to be a wet
layer at the bottom of
some of the thicker
layers of these
materials. Also, we may
wash down the surfaces
with high pressure water
prior to applying the
coating and do not have
a good means of drying
the surfaces other than
allowing the ventilation
flow to dry it out over
time. The radiation
levels are relatively
high so this coating
will need to be applied
be sprayer using remote
manipulators.
:
"I am
in process of developing
methods to decontaminate
a process hot cell that
has a film of residual
solids left after the
evaporation of Hydroflouric Acid, Boric
acid, Nitric Acid and
Aluminum Nitrate
chemicals that contained
relatively high
concentrations of disolved cadmium, boron,
uranium and zirconium.
Do you have a product
that is compatible with
these chemicals to use
to help strip off and
minimize the
contamination on walls
and floors made of
welded stainless steel?
"
2.We are
working in a facility
contaminated with
Tritium. We have to
purchase a portable
gantry crane to move
some equipment around.
Our client ( National
Laboratory) wants to be
able to reuse this crane
in another facility
afterwards and wants to
minimize the
decontamination efforts
and the potential for
not being able to
release the crane to the
other facility later
down the road.
The crane is a typical
gantry crane. That is, a
horizontal top beam
(steel) that holds the
chain hoist mechanism)
approximately 9 feet
across and the end
structures (all steel)
tri-pod frames on
castors for easy
rolling. The crane can
be adjusted to a maximum
height of 12 feet. The
moving parts consist of
the hoist mechanism
traveling across the
upper horizontal beam.
The chain in the hoist
mechanism is the only
other moving part. The
paint will be applied
primarily to the
structure itself. We
will probably cover the
hoist mechanism in
plastic to minimize
contamination. We
anticipate that we will
have to perform some
decontamination, but the
idea is to try and keep
the basic structure of
the crane clean after
stripping off the paint.
We realize that Tritium
is different than other
radioisotopes since it
is not a particulate,
but rather a gas.
Nevertheless, the client
wants the paint to try
to minimize
decontamination efforts.
Our Recommendation:
Deconcoat 2050 is
a water based peelable
coating promoted for the
protection of metal from
rusting. This coating
cures by water
evaporation a goes from
white to clear. The
coating can be applied
to metal, glass, marble
and painted semi or
glossy surfaces.
In this case, we suggest
of applying a coat of
2050, about 6 to 10
mils, and start using
your equipment. When the
job is finished apply a
second coat, sandwiching
contaminates, and let
the coating dry to clear
state. Pry a corner and
peel the coating off.
Dispose of the coating
and contaminates
properly. Camel hair
brush is the best. 3.
we are a Finnish engineering
company providing services and
products for nuclear industry.
Our client for which we have
provided a decontamination
system to clean walls of the
reactor pool has now asked us to
provide also a system to clean
reactor vessel flange surfaces
which can be seen in the photo
attached. The areas to be
cleaned consists of the floor
area (25 m2 x 2 units) shown in
the photo except the area
covered with a blue plate. The
bolt holes will be equipped with
flat blinds during the cleaning.
We have learned that you provide
strippable coatings for nuclear
industry. We are interested in
DeconCoat 2050 and we have
couple of questions about it.
1. What is the price of six
gallons of DeconCoat 2050?
2. What is the recommended way
to apply DeconCoat 2050 to
reactor vessel flange surface?
Our Recommendations : DECONCOAT
2050 is a water based peelable
coating to be applied by airless
spray to a minimum wet thickness
of 12 to 14 mils. The product
cures by water evaporation and
transforms from white to clear.
Clear coating is hard a
flexible. The cure process
encompasses most particles into
the coating and can be disposed
when Deconcoat is peeled.
|